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Artículos de revistas sobre el tema "Water purification research"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 21 de febrero de 2023

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1

Dvoinikova, A. V. y O. I. Filipovskaya. "RESEARCH ON PURIFICATION, DISINFECTION AND ENRICHMENTOF NATURAL WATER". Oil and Gas Studies, n.º 2 (1 de mayo de 2017): 89–92. http://dx.doi.org/10.31660/0445-0108-2017-2-89-92.

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The article emphasizes that the proposed method of natural water purification with natural sorbents is more effective than purification with artificial sorbents. This will give the opportunity not only to get rid of contaminants, but also disinfect and enrich water with natural chemical elements.
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2

陈, 馨彤. "Research Progress of Water Hyacinth on Wastewater Purification". Advances in Environmental Protection 11, n.º 05 (2021): 1020–25. http://dx.doi.org/10.12677/aep.2021.115122.

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3

Du, Xin Yu. "Research on Swimming Pool Water Treatment Based on Embedded System". Applied Mechanics and Materials 539 (julio de 2014): 644–47. http://dx.doi.org/10.4028/www.scientific.net/amm.539.644.

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This paper mainly designs the outdoor swimming pool circulation purification system, introduced the circulation mode selection, calculation of water cycle, and we proposed water purification treatment measures. After filtration and disinfection of swimming pool water, which achieve the "Hygienic standard for swimming place" (GB9667-1996) that regulations on "the quality and hygiene standards" artificial swimming pool, which can be recycled.
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4

Liu, Hai Jiao, Ming Yuan Fan, Yu Zhi Shi y Xiao Feng Yang. "Research on Connected Water Body Self-Purification Capacity Simulation and Effect Analysis". Applied Mechanics and Materials 737 (marzo de 2015): 715–18. http://dx.doi.org/10.4028/www.scientific.net/amm.737.715.

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Water network construction makes water increased connectivity, for the water self-purification ability also has the corresponding improvement effect. With Xiaoqing River of Guangrao County segment as an example, paper built the simulation model of river water quality based on MIKE11, and simulated the connected water body self-purification capacity. Results show that water body connectivity can improve the water quality of Xiaoqing River to a certain extent.
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5

Li, Cheng, Ting Lin Huang, Wen Jie He, Chen Li y Zhi Wei Li. "Comparative Research for Different Treatment Technologies of Daily Drinking Water". Advanced Materials Research 663 (febrero de 2013): 863–69. http://dx.doi.org/10.4028/www.scientific.net/amr.663.863.

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The research takes Yang Liuqing water plant as an example.Compare the studies of the conventional process, coagulation pressure type membrane process, coagulation submerged membrane process between removal efficiency and water production rate.The result shows the removal efficiency of raw water turbidity and oxygen consumption had an increase of 7% and 4% than the conventional process. Disposable water production rate increased by 1%-2%.Meanwhile combined with other influence factors,a analytic hierarchy model has been established. From the two aspects of cost and benefit,compare comprehensively different process.The result shows that coagulation - immersed membrane process is more suitable drinking water treatment technology for water purification operation in water purification plant.
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6

Ji, Keyu, Chengkun Liu, Haijun He, Xue Mao, Liang Wei, Hao Wang, Mengdi Zhang, Yutong Shen, Runjun Sun y Fenglei Zhou. "Research Progress of Water Treatment Technology Based on Nanofiber Membranes". Polymers 15, n.º 3 (31 de enero de 2023): 741. http://dx.doi.org/10.3390/polym15030741.

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In the field of water purification, membrane separation technology plays a significant role. Electrospinning has emerged as a primary method to produce nanofiber membranes due to its straightforward, low cost, functional diversity, and process controllability. It is possible to flexibly control the structural characteristics of electrospun nanofiber membranes as well as carry out various membrane material combinations to make full use of their various properties, including high porosity, high selectivity, and microporous permeability to obtain high-performance water treatment membranes. These water separation membranes can satisfy the fast and efficient purification requirements in different water purification applications due to their high filtration efficiency. The current research on water treatment membranes is still focused on creating high-permeability membranes with outstanding selectivity, remarkable antifouling performance, superior physical and chemical performance, and long-term stability. This paper reviewed the preparation methods and properties of electrospun nanofiber membranes for water treatment in various fields, including microfiltration, ultrafiltration, nanofiltration, reverse osmosis, forward osmosis, and other special applications. Lastly, various antifouling technologies and research progress of water treatment membranes were discussed, and the future development direction of electrospun nanofiber membranes for water treatment was also presented.
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7

Hayashi, N., H. Yokota, H. Furumai y M. Fujiwara. "Evaluation of source water quality for selection of drinking water purification system". Water Supply 8, n.º 3 (1 de septiembre de 2008): 271–78. http://dx.doi.org/10.2166/ws.2008.071.

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When renewing water purification facilities, it is important to select a suitable purification system that can accommodate the quality of the respective source water. The Japan Water Research Center has been collecting a large amount of water quality data from drinking-water utilities across Japan, categorising and analysing these data, and evaluating the suitability of water purification processes. Multivariate analyses such as hierarchical cluster analysis and principal component analysis were performed to investigate the relationships between the quality of source water used for water supply and various factors that affect the purification process. Based on these results, water sources throughout Japan were clearly categorised into four groups, and suitable water purification systems were identified for the different water quality groups. The results can serve as an important reference for water utilities during future facility renewal projects.
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8

Allen, Robert D., Yong-Hye Na, Ratnam Sooriyakumaran, Masaki Fujiwara y Kazuhiro Yamanaka. "Leveraging Resist Chemistry Research for Water Purification Membrane Technology". Journal of Photopolymer Science and Technology 23, n.º 5 (2010): 741–47. http://dx.doi.org/10.2494/photopolymer.23.741.

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9

Chuikov, A. S., E. V. Sorokina, A. N. Volkov, U. V. Vedmetsky y D. V. Shabanov. "Technology of primary water purification". IOP Conference Series: Earth and Environmental Science 1010, n.º 1 (1 de abril de 2022): 012091. http://dx.doi.org/10.1088/1755-1315/1010/1/012091.

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Abstract The polluted wastewater treatment is one of the main issues in agro-industrial complex. This article is devoted to the primary water purification research for its further treatment with ferrate technology. The technology implies the wastewater treatment from household and industrial waste resulting from agricultural enterprises. The ferrate technology provides a high efficiency of pretreated water purification, in comparison with other existing methods. The article substantiates such an advantage accordingly. The waste generated as a result of wastewater treatment is non-toxic and disposal. The article proposes a new method of preliminary water purification based on its treatment between a galvanic couple in the presence of the calcium hydroxide. This method can be used at water treatment plants and at enterprises carrying out industrial activities in agriculture. The method is applicable only after mechanical filtration at the stage of primary water treatment. The proposed method provides water treatment from a wide range of various origins contaminants. The article also describes an experimental equipment specially designed for the proposed method’s implementation and further research. The equipment provides continuous water treatment consuming electricity, quicklime and compressed air. To maintain the lime particles in suspension condition the airflow is supplied through an aerator. The article applies the turbidimetric analysis method to conduct an in-depth analysis of the water treatment processes and determine the relative reagent concentration in the working area. The article also proves the absence of interface formation between water and milk of lime when subjected to air flow.
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10

Gou, Xiao Li y Xuan Jun Wang. "The Combined Processing Technology Research of the Naturally Purification and Artificial Wetland to Dimethyl Hydrazine Waste Water". Advanced Materials Research 518-523 (mayo de 2012): 2881–85. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2881.

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In accordance with the shortcoming of naturally purification processing to liquid propellant dimethyl hydrazine waste water, the paper is putting forward the combined processing technology of naturally purification and artificial wetland. Designed process flow of the combined processing technology, and the naturally purification and artificial wetland dealing with the structure of pond, and to his processing dimethyl hydrazine the effect to imitate waste water has been in progress research. The result indicates: the technology can effective remove dimethyl hydrazine and his degradation product in the waste water, and the back waste water of processing achieves the placing in proper order quota.
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11

Porshina, E. G., O. G. Saimanova y E. P. Serpukhova. "Research of the Purification Methods of Chrome-Containing Manufacturing Water". IOP Conference Series: Materials Science and Engineering 1079, n.º 3 (1 de marzo de 2021): 032074. http://dx.doi.org/10.1088/1757-899x/1079/3/032074.

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12

Прасолов, Евгений Яковлевич y Артур Юрійович Ломига. "Research of the purification process of farmland oil-containing water". Technology audit and production reserves 5, n.º 1(19) (2 de octubre de 2014): 61. http://dx.doi.org/10.15587/2312-8372.2014.28069.

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13

Wu, Chung Hao, Hsien Sheng Peng y How Ji Chen. "Research on the Feasibility of Concrete Incorporating Water Purification Sludge". Materials Science Forum 1005 (agosto de 2020): 47–56. http://dx.doi.org/10.4028/www.scientific.net/msf.1005.47.

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This study aims to develop the mix proportion of concrete incorporating water purification sludge (WPS), as parts of fine aggregate and consequently investigate its mechanical properties and durability. The experiments involve three sludges from Da-Nan, Lin-Nei and Nan-Hua water treatment plants in Taiwan. In addition to the control mixture without WPS, four replacement levels of 20%, 40%, 60% and 80% of fine aggregate were selected for preparing the concrete mixture. The concretes tested were designed to have three target compressive strengths of 14MPa, 18MPa and 21MPa. Test results show that the compressive strengths of the Da-Nan and Lin-Nei WPS concretes meet the design requirements, and the strength of the Nan-Hua WPS concrete is lower to be only suitable for application in low strength concretes. The shrinkage deformation of the Da-Nan and Lin-Nei WPS concretes increase with the increase of sludge replacement level, however, the shrinkage deformation decreases with the increase of the compressive strength of concrete. If the sludge replacement ratio is less than 40%, its effect on the compressive strength of the Da-Nan and Lin-Nei WPSs concrete is limited whether they are cured in water or in the air.
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14

Gong, Mingfu, Shilin Xiao, Xian Yu, Chencheng Dong, Jiahui Ji, Dong Zhang y Mingyang Xing. "Research progress of photocatalytic sterilization over semiconductors". RSC Advances 9, n.º 34 (2019): 19278–84. http://dx.doi.org/10.1039/c9ra01826c.

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With increasingly serious environmental issues, practical applications of semiconductor photocatalysts for environmental purification have attracted broad attention. Semiconductor photocatalysts for the disinfection of soil surfaces, air and water are of great interest.
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15

Onuoha, D. C. y O. G. Ogbo. "Application of Nano-Technology in Water Purification and Treatment, Towards Improving Water Quality for Effective Water Supply in Nigeria". International Journal of Environment and Pollution Research 10, n.º 2 (15 de febrero de 2022): 19–33. http://dx.doi.org/10.37745/ijepr.13/vo10.n2pp1933.

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Nanotechnology has myriads of potentials and windows of opportunities cutting across all sectors, but this paper concentrated on the application of nanotechnology in water purification and treatment as a means of improving water quality for effective water supply in Nigeria. The paper reviewed twenty-one manuscripts on the applications of nanotechnology in water treatment, its efficiency and major challenges including original research studies and reviews. It was found that nanotechnology has the potentials to advance and make easy the process of water purification effectively, with the merits of lower costs, energy saving, and relative limited negative environmental and health impacts. Some of the identified nanomaterials useful in water treatment and purification include: carbon nanotubes and alumina fibers for nanofiltration, carbon nanotube membranes for removal of almost all kinds of water contaminants including turbidity, oil, bacteria, viruses and organic contaminants; Zinc oxide nanoparticles for removing arsenic from water; nano titanium oxide used to degrade organic pollutants; zero-valent metal nanoparticles, metal oxides nanoparticles, and nanocomposites among others. The paper recommended that nanotechnology should be adopted in water purification and treatment in order to improve water quality and adequate water supply in Nigeria. Also, the departments of water resources planning and management should partner with available nanotechnology centres to improve the sector using this technology.
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16

Dolina, Leonid Fedorovich, Olena Kostiantynivna Nahorna, Yuliia Oleksandrivna Zhdan y Dmytro Andriyovich Dolyna. "WATER PURIFICATION IN SPACE CONDITIONS". Journal of Rocket-Space Technology 29, n.º 4 (17 de noviembre de 2021): 194–202. http://dx.doi.org/10.15421/452122.

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The life support system of the International Space Station must include the provision of drinking water to the crew and the treatment and disposal of wastewater. The cost of water delivery to the ISS is very high, so it is necessary to improve the technological schemes of wastewater treatment in space in order to reuse water in a complete closed cycle. The studies were performed based on the analysis of Ukrainian and foreign scientific sources and reporting data on the specifics of water use at space stations and the treatment methods of the used waters (wastewaters). In addition to international experience, our own research was used to develop a technology for wastewater treatment in space. The authors of the article analyzed the operation of existing wastewater treatment facilities in space and made recommendations for their use at the ISS. The developed technology for the treatment of wastewater and drinking water in zero-gravity (space) is based on the use of various reactors. They can be made of various materials (metal, plastic, etc.); they do not contain non-standard equipment that requires factory manufacturing. Compactness, complete tightness and small dimensions of bio- and physicochemical reactors allow them to be installed within the ISS. The cleaning process is easy to manage and can be fully automated. Water problems are central to the whole world, including in space. The ISS should have a system for the wastewater treatment and their closed use, since the supply of new water to stations significantly increases the cost of space exploration. Quality water is the health and well-being of people in space. Since there is no gravity in space, centrifugal forces (centrifuges) must be used to separate suspended particles from water. A comprehensive review of the issues related to wastewater treatment in space, allows us to conclude that it is necessary to regenerate water at International space stations (ISS). Indeed, to ensure the life support of the astronauts, a colossal amount of water is required, and its delivery to the ISS from the Earth is expensive.
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17

Fu, Wan Jun. "The Technology of High Efficiency Water Purification". Advanced Materials Research 1052 (octubre de 2014): 574–77. http://dx.doi.org/10.4028/www.scientific.net/amr.1052.574.

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A new promising water purification technology, soft fiber wadding filter, was introduced in this article. The technology has the advantages of energy saving and emission reduction efficiency greatly, is currently the most advanced water purification. This paper explains the structure of the technical equipment, tell the filtration principle, provides the filter parameters of practical efficiency, comparison. The technology is mainly used in power plants, metallurgy, chemical industry, oil field water treatment engineering, and achieved satisfactory results. Significance of the research on the model of water filtration equipment development and filtration theory is grearly.
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18

Toma, Adina, Zheleva Ivanka, Cristian Puşcaşu, Alexandru Paraschiv y Mihaela Grigorescu. "Technical project for a new water purification solution". MATEC Web of Conferences 145 (2018): 03013. http://dx.doi.org/10.1051/matecconf/201814503013.

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This research is part of the RO-BG Cross-Border Cooperation Program, project “CLEANDANUBE”, MIS-ETC 653, which has finalised by providing a common strategy to prevent the Danube’s pollution technological risks with oil and oil products. This paper presents a new sustainable water purification solution. A short introduction will be offered and an overview regarding the research and new methods to greening the waste is provided. The theoretical aspects of the centrifugal separation phenomenon are studied and the preliminary project bases were established. The paper conveys the possible constructive variations and the technological implications of those. Ultimately, the technical project for a new water purification solution and conclusions with critical points encountered during the designing phase are presented.
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19

Tang, Xin, Changlei Chen, Xin Yang y Weidong Liu. "Research on Micro-Water Treatment Technology of High-Voltage SF6 Equipment without Power Failure". Journal of Physics: Conference Series 2401, n.º 1 (1 de diciembre de 2022): 012066. http://dx.doi.org/10.1088/1742-6596/2401/1/012066.

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Abstract With the frequent occurrence of high-voltage SF6 equipment-related problems in recent years, the exceedances of micro-water content and decomposition products of SF6 and other problems are getting increasingly worse. The routine solution involves multiple processes, including powering off the equipment, recovering the SF6 gas in the equipment, flushing, injecting new SF6 gas, and conducting the voltage withstand test, which requires a huge number of manpower and material resources. Besides, the operating process is risky, and power cutting and re-supplying increase the operational risk and impair the reliability of the grid in the power supply. This paper mainly explores an efficient, safe, and intelligent online SF6 purification technology, which can achieve the online detection and purification of SF6 micro-water and impurity gases when the high-voltage SF6 equipment is powered on and make the purification units’ renewable. Applying this technology can prevent the power cut of high-voltage power supply equipment, thereby making sure that the grids are safe. It is also environmentally friendly as it can reduce the usage of SF6 gas.
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20

Peng, Zhen, Li Zhang, Chun Sheng Wang y Ke Fu Yao. "A Research on Purification of Oily Wastewater with TiO2 Photocatalysts Supported by Zeolite Particles". Advanced Materials Research 953-954 (junio de 2014): 1017–21. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.1017.

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It is well-known that TiO2is an environmental benign photocatalyst which can be used to decompose harmful organic compounds. Recently, many studies are concentrated on the purification of industrial wastewater due to the requirement of environmental protection. In present study, TiO2nanomaterials supported by fine zeolite particles have been used as the photocatalyst to purify the oily wastewater. It has been found that the oil concentration in the modulated water can be reduced significantly and rapidly under the action of photocatalytic degradation and the ultraviolet light radiation. After 80 minutes, oil concentration in the modulated water can be reduced by more than 80%. The results suggest that TiO2nanomaterials supported by fine zeolite particles are effective material for purification of oily wastewater. In addition, the present results show that the efficiency of water purification can be significantly increased by use of mechanical stirring during the photocatalytic degradation process.
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21

Gorbach, V. A. "Research and development on the purification of natural water from arsenic". Mining informational and analytical bulletin, S19 (2021): 362–74. http://dx.doi.org/10.25018/0236_1493_2021_11_19_362.

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22

Xu, Peilong y Juan Zhang. "Research of Diatomite\'s Purification Capacity to Organic Pollutants in Water". Advance Journal of Food Science and Technology 6, n.º 8 (10 de agosto de 2014): 947–50. http://dx.doi.org/10.19026/ajfst.6.137.

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23

QU, Jiuhui. "Research progress of novel adsorption processes in water purification: A review". Journal of Environmental Sciences 20, n.º 1 (enero de 2008): 1–13. http://dx.doi.org/10.1016/s1001-0742(08)60001-7.

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24

Fadhilah, Lailatul, Jasmidi Jasmidi, Rini Selly y Moondra Zubir. "Water Purification Process Uses Adsorbents From Natural". Indonesian Journal of Chemical Science and Technology (IJCST) 4, n.º 1 (30 de enero de 2021): 42. http://dx.doi.org/10.24114/ijcst.v4i1.23095.

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Adsorbent is an adsorption that is used to absorb various pollutants. Adsorbents can be used from natural materials. Natural ingredients that can be used are oil palm empty bunches. Oil palm empty bunches are a carbon-rich material that is getting new research interest in adsorption because of its abundance and properties. Oil palm empty bunches contain carbon, nitrogen, hydrogen, oxygen, sulfur, lignin, hemicellulose, and cellulose. Oil palm empty bunches are used as adsorbent for water saturation.
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25

Shannon, Mark A. y Raphael Semiat. "Advancing Materials and Technologies for Water Purification". MRS Bulletin 33, n.º 1 (enero de 2008): 9–15. http://dx.doi.org/10.1557/mrs2008.8.

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AbstractWorldwide, 1.2 billion people lack access to sufficient amounts of clean water, and 2.6 billion lack adequate sanitation. Also, industry relies on large quantities of water during manufacturing, which is then returned to the environment. Having adequate water supplies, and removing pathogens, chemicals, and other contaminants with high throughput at a low cost is a growing challenge around the world. This issue of MRS Bulletin examines how materials research, through the development of membranes, catalysts, nanoparticles, and other materials, is addressing these needs.
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26

Kotia, Ankit, Aman Yadav, Tata Rohit Raj, Maria Gertrud Keischgens, Happy Rathore y Ioannis E. Sarris. "Carbon Nanoparticles as Sources for a Cost-Effective Water Purification Method: A Comprehensive Review". Fluids 5, n.º 4 (1 de diciembre de 2020): 230. http://dx.doi.org/10.3390/fluids5040230.

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As the global population grows, the demand for cost-effective and eco-friendly water purification methods is increasing, which presently is at its peak due to the increase of impurities in water and the increasing awareness of waterborne disease. Carbon-based materials, which includes activated carbon, carbon nanotubes (CNTs), graphene, graphene oxide (GO), reduced graphene oxide (rGO), fullerene, and carbon dots, are observed as potential candidates for water treatment. In the present review, developments related to water purification methods using carbon nanomaterials over the last decade are critically summarized, with an emphasis on their thermophysical properties. The fabrication techniques for activated carbon, CNTs, graphene, and graphene oxide are presented, with an emphasis on the properties of carbon materials that allow their usage for water purification. Then, an extensive review of 71 patents dedicated to water purification using carbon materials such as activated carbon and cotton fibers is performed. Subsequently, the more important research studies on water purification using carbon nanomaterials are discussed, showing that CNTs, GO, and rGO are widely used in water treatment processes. The present review critically discusses the recent developments and provides important information on water purification using carbon materials.
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27

Galkina, Olena, Sergiy Kunytskyi y Tamara Shevchenko. "The Effectiveness of the Implementation of Research Results in a Technological Scheme of Water Purification". Slovak Journal of Civil Engineering 30, n.º 4 (1 de diciembre de 2022): 17–22. http://dx.doi.org/10.2478/sjce-2022-0024.

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Abstract The paper proposes technical solutions for the use of the reagent method of water preparation at coke plants in order to bring it to a quality suitable for use in the circulating water supply system of the PJSC Kharkiv Coke Plan. It is proposed to dilute phenolic water in a biochemical installation in a mixer before purification and to purify water with a flocculant. The paper recommends dosing the flocculant solution automatically using a preparation station. Additional purification of the clarified water is carried out using a filtration unit with a filter media from a layer of quartz sand. The economic effect from the implementation of the technical measures is achieved not only due to the reduction in fresh water consumption by 60 540 m3/year and the cessation of the discharge of phenolic water into the city sewer network, but also the replacement of the reagent with a more efficient one and a decrease in its consumption. It has been found that the introduction of the technical solutions for the circulating water supply system is economically and environmentally justifiable.
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28

Chen, H., X. H. Che, Z. J. Bi y Z. S. Tian. "Research on a small-scale drinking water quality detection system based on detection of laser-induced fluorescence". Journal of Physics: Conference Series 2226, n.º 1 (1 de marzo de 2022): 012002. http://dx.doi.org/10.1088/1742-6596/2226/1/012002.

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Abstract In this paper a small-scale drinking water quality detection system that can be used for real-time evaluation of Dissolved Organic Matter (DOM) and Total Dissolved Solids (TDS) is presented. The DOM detection is based on the principle that the intensity of the laser-induced fluorescence signal is proportional to the DOM concentration. In experiment, the DOM concentration of sodium humate solution and the TDS value of NaCl solution are tested, respectively. In addition, drinking water and tap water before and after purification are also detected by the system. The quality of purified water is significantly higher than that before purification. Detection results obtained in our laboratory indicate that the system described in this paper can detect the organic and inorganic contents of drinking water. Advantages of our system are small volume, high sensitivity and high precision.
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Ferdinal, Norman. "PEMURNIAN CATECHIN DARI GAMBIR KOTO PANJANG, PESISIR SELATAN". Jurnal Riset Kimia 5, n.º 1 (12 de febrero de 2015): 40. http://dx.doi.org/10.25077/jrk.v5i1.177.

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Vol 5 No 1ABSTRACT The research about catechin purification from gambier was purposed to find its solubility properties in various solvent such as in cold water, hot water, hexane, ethyl acetate, and methanol. By knowing its solubility properties, the easiest way to purify the catechin could be gotten which is yielding about 7.33%. Further, the molecular structure has been gotten by determining its melting point and using spectrophotometric measurements such as UV, IR, 1H NMR, 13C NMR. Based on those measurements, d-cathecin structure with a melting point of 175 - 177 ºC was founded. The expected benefit from this research is it could be benefiting the development of gambier purification industry in order to enhancing added value of West Sumatera’s commodities. It would make Western Sumatera gaining stronger bargaining position due to the capability on selling not only on the crude form to abroad. The result of this research has indicated that catechin purification can be performed using an organic solvent and water. Keywords: Purification, catechin, gambier
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30

Jin, La Hua y Na Sha Jiang. "Research on Effect and Mechanism of Sewage Treatment by SBR with Concrete Bio-Films". Advanced Materials Research 726-731 (agosto de 2013): 1930–34. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.1930.

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In order to develop a new high-efficient but low-cost sewage treatment technology, sewage treatment experiments have been accomplished in a new type sequencing batch reactor with concrete bio-films. During experiments, simulation sewage was taken as raw water, and the operation sequence of the reactor was taken as 1.25h for water input and hypoxia, 1.25h for aeration, 0.5h for precipitation and 0.5h for water discharge successively. It has been shown by the experimental results that the reactor has optimal sewage purification effects, such as its average pollutant removal rate can arrive at about 95% for COD and BOD5, near 70% for ammonia hydrogen and about 40% for total phosphorus under the experimental condition. Main factors influencing the reactor purification effect have been discovered as pollutant volume load, ratio C/N, water temperature and amount of bio-films installed in the reactor. The mechanism of their influences has been also discussed in this paper.
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31

Farkhod, Yusupov, Nuriddinova Dilfuza, Yakhsheva Yulduz, Yusupov Sukhrob y Mamanazarov Murodali. "Import-mixing Sorbents for Purification of Waste Production Water of Gas Processing Industry for re-use". International Journal of Mechanics 15 (29 de junio de 2021): 95–101. http://dx.doi.org/10.46300/9104.2021.15.10.

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Currently, there are a variety of methods and technologies for water purification. One of them is the adsorption method. Today the adsorption method is widely used in the water treatment industry. The aim of the research is to create an effective multifunctional filtering composition suitable for complex physical and chemical water purification. For this, a cation exchanger developed on the basis of local raw materials, activated alumina and other local materials was used. The adsorption properties of the cation exchanger and aluminum oxide in the composition of this filter have been studied. Also, the parameters of the filter for water purification are determined.
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32

Dong, Hanjiang, Dongsong Yan, Liangyu Deng, Hongfei Guo, Keshan Wang, Mengfan Wu, Bingjie Yu, Jian Wang y Haodong Fan. "Purification Effect of Oysters Based on the Analysis of Environmental Parameters". Studies in Engineering and Technology 6, n.º 1 (20 de junio de 2019): 78. http://dx.doi.org/10.11114/set.v6i1.4299.

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With the development of coastal industries, marine pollution has intensified, and more and more shellfish in marine areas have been polluted to varying degrees. People's health can be compromised when eating contaminated shellfish. In the actual purification process of the shellfish purification plant project, there is no in-depth exploration of the parameters of the purification pond. Based on supplementing the basic research for the development of the oyster purification industry at different temperatures, salinities, pH, ultraviolet lamp power, irradiation time, and water flow rate, we find the best environmental conditions are a temperature of 30 °C, a pH of 8, a salinity of 32%, an ultraviolet lamp illumination power of 9w, an ultraviolet lamp irradiation time of 12h, and a water body flow rate of 0.5m/s. We supplement basic research related to bioengineering in China. We hope that our results can provide reference for further research and contribute to the sustainable development of the oyster purification industry. Create economic benefits for society.
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33

Ma, Jian Wei y Ya Rui Song. "Purification Raw Water by Magnetic Resin (MIEX)". Advanced Materials Research 726-731 (agosto de 2013): 3185–88. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.3185.

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The objective of this research was to compare enhanced coagulation with anion exchange for removal of natural organic matter (NOM) and bromide. Treatment with a magnetic ion exchange resin (MIEX) was the primary focus of this study. The performance of the magnetic ion exchange resin,MIEX, in the treatment of raw water was investigated. MIEX can effectively remove UV-absorbing substances DOC. The removal of organic substances is accompanied by the elimination of other undesirable components, such as nitrogen and phosphorus. The optimal process parameters are at resin doses of 5-10 mL L1and contact time of 10-15 min, as determined via jartests. Based on this study, MIEX treatment is a suitable and efficient pretreatment method for the removal of extra dissolved organic matters and nitrates in raw water .
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34

Liang, Su Tao, Jin Xi Lu, Jiang Hai Ji, Liang Gao, Hong Wei Li y Hong Quan Liu. "The Research on Designing a New Artificial Ecological Sewage Treatment Technology". Advanced Materials Research 538-541 (junio de 2012): 3133–36. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.3133.

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The research aims at a new technology of ecological waste water treatment, which can not only clean up in a high efficient to some inorganic element, such as N and P and etc, hold up pollutants in waste water efficiently, but also improve purification efficiency of unit volume of sewage by 32-46% and keep it functioning normally all year around.
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35

Kudryashova’, Tatiana, Sergey Polyakov y Nikita Tarasov. "A novel parallel algorithm for 3D modelling electromagnetic purification of water". MATEC Web of Conferences 210 (2018): 04027. http://dx.doi.org/10.1051/matecconf/201821004027.

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The computational fluid dynamic research in this work has focused on the problem of full-scale three-dimensional modelling water purification processes by the electromagnetic method. Presently, this method of purification was used in the final stage of processing for the production of ultrapure water. In spite of many field experiments, detailed data on such processes can be obtained only by the mathematical modelling. This way allows us to take into account many aspects, for example: real three-dimensional geometry, physical structure of the purification system, heterogeneous composition of the impurities, etc. And also, the mathematical modelling helps to optimize many parameters in order to improve a design of the purification system. Within the framework of the modelling problem, one of the important aspects is the correct description of the three-dimensional flow inside a specific purification system. For this purpose, various mathematical models and numerical approaches are implemented. In this paper, the flow calculation was realized on basis of the Navier-Stokes equations.
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36

Bian, J. y X. Li. "Research on the Operational Regularity and Management Technology of Stabilization Ponds". Water Science and Technology 26, n.º 7-8 (1 de octubre de 1992): 1749–57. http://dx.doi.org/10.2166/wst.1992.0618.

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This paper studies the treatment of municipal wastewater in Tianjin by intensified facultative ponds. Based on the analyses and calculation of a great quantity of data, the removal efficiencies and influencing factors of BOD, COD, SS, TN etc. should be taken to promote the purification effects of stabilization ponds. Moreover, from the process of the purification of wastewater, some relationship with DO level, concentration of algae chlorophyll and daphnia could be found and be investigated as basis of controlling and optimising of the normal operation of ponds. It also provides a significant index on applying technology and scientific management methods for the treatment of wastewater by stabilization ponds.
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37

Fu, Wan Jun y Wei Liang. "A New Technology of High Efficiency Filter Water Purification". Applied Mechanics and Materials 651-653 (septiembre de 2014): 1394–97. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.1394.

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A new promising water purification technology, soft fiber wadding filter, was introduced in this article. The technology has the advantages of energy saving and emission reduction efficiency greatly, is currently the most advanced water purification. This paper explains the structure of the technical equipment, tell the filtration principle, provides the filter parameters of practical efficiency, comparison. The technology is mainly used in power plants, metallurgy, chemical industry, oil field water treatment engineering, and achieved satisfactory results. Significance of the research on the model of water filtration equipment development and filtration theory is grearly.
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38

Hu, Baoan, Miao Miao Wang y Liang Shao. "Research on Residual Water Purification Treatment for Environmental Dredging of Taihu Lake". Advanced Materials Research 356-360 (octubre de 2011): 1023–28. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1023.

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Large quantities of residual water with contaminants are produced during the dredging project of Taihu lake, which will bring environment pollution without treatment. Combining the experiments with real engineering, water quality and the correlation between pollution indexes were detected and analyzed in this article. Through coagulation experiments, the removal effects of different flocculants were investigated, meanwhile the amount of flocculants and the setting time were determined. Experimental results showed that the correlation exists between SS, CODMn , NH3-N and TP, so the method of only controlling SS for water discharge target could not totally satisfy the requirement. The sedimentation time in storage yard influenced the removal effects on pollutions greatly, thus, the bottom sludge could not flow into sedimentation tank without staying in the storage yard. PAC was the best flocculant, and the solid suspension concentration could drop below 100 mg/L when the concentration is 50 mg/L and the coagulation time is 5 minutes.
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39

Wang, Ying, Xia Zhen Shao y Yang Ming Yu. "Purification of Hydrilla Verticillata - Water Hyacinth Combinations in the Urban River’s Simulation Test Research". Advanced Materials Research 518-523 (mayo de 2012): 1780–83. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.1780.

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Using the Hydrilla verticillata - water hyacinth combination to conduct the purification research,which simulates the urban river water , the experimental study discovery, compare with the still water condition and the move water condition which the velocity of flow is 1.74cm/s, it has slightly the superiority to NH3-N, TP and DO purifies, the average elimination rate of NH3-N and TP achieves 87.24% and 82.06%，the DO density of the moves water group fluctuation not to be big in the entire experimental process, maintains throughout in the 7.24～8.75 mg/L mg/L stable scope, but to TN and COD elimination rate , the still water group is higher than move the water group obviously, respectively achieves 81.71%, 76.64%.
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40

Li, Yujie, Cai Cheng y Xiaona Li. "Research Progress on Water Purification Efficiency of Multiplant Combination in Constructed Wetland". IOP Conference Series: Earth and Environmental Science 632 (14 de enero de 2021): 052051. http://dx.doi.org/10.1088/1755-1315/632/5/052051.

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41

Yang, Guo Sheng, Jie Sheng Huang, Jian Li y Wei Yin. "Study on Green Water Management in a Typical Watershed in Water Resource Area of the Mid-Route of South-to-North Water Transfer". Advanced Materials Research 864-867 (diciembre de 2013): 2240–48. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.2240.

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Danjiangkou Reservoir and its upstream tributaries as water resource area is of strategic importance for the Mid-route of South-to-North Water Transfer Project. Water conservation and water purification is the key measures for sustainable water diversion. Green water management as a new technologies to achieve water conservation and water purification has a broad application prospects. In this research, green water management was studied in the Upper Du watershed. ArcSWAT model was used to assess quantity of green water resource. By adjusting the model parameters, the efficiency of different green water management scenarios on water and soil conservation were simulated. The results of the study indicate that the quantity of green water in the Upper Du is about 5.588 billion cubic meters. Mulching is a better green water management way that more suitable for water and soil conservation in the Danjiangkou Water Resource Area. This research can provide a reference for water resource protection and management in Water Resource Area of the Mid-route of South-to-North Water Transfer.
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42

Godoy, Antonio Cesar, Romulo Batista Rodrigues, Arlindo Fabrício Corrêia, Jarred Hugh Oxford, Antonio Carlos Chidichima, Frederico Lovato, Wilson Rogério Boscolo, Monica Lady Fiorese y Aldi Feiden. "Mapping of physical-chemical, microbiological, and chemical component characteristics of water samples from Nile tilapia slaughterhouses". Research, Society and Development 10, n.º 11 (27 de agosto de 2021): e164101119066. http://dx.doi.org/10.33448/rsd-v10i11.19066.

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The aim of this study was to analyze the physicochemical and microbiological characteristics of the water used in fish processing and tilapia fillets in slaughterhouses. The study analyzed the processing water from nine slaughterhouses. The water samples for analysis were collected at three points: process water (PW), it is the water used inside the slaughterhouses in direct contact with the fish; clean water entering the purification tank (EPT) and water leaving the purification tank (LPT). The processing waters of the nine tilapia slaughterhouses were analyzed and characterized according to their microbiological and physical-chemical characteristics. The results of microbiological analyzes meet the values indicated by legislation, in most cases. Regarding microbiological data, we can highlight that there was an increase in the total coliforms of the water entering the purification tank to the water leaving the purification tank in five slaughterhouses. Still, there was an increase in the aerobic mesophilic bacteria content observed in the outgoing water in relation to the inlet water of the purification tank in seven slaughterhouses. In relation to the physical chemical analyzes for the process water samples, the results show that the evaluated indices are in accordance with the values indicated by the legislation. The levels of Cd, Mg, Sc and Cd were below that detectable by the analysis in all slaughterhouses. The levels of Al, Sc, As, Rb, Ba, Pb, Mn, As, Se, Rb, Ag, Sb, Ba and Pb were detected only in one or two slaughterhouses. It is concluded that although some abattoirs have water characteristics outside the limits indicated by the legislation, the observed changes were not significant and small adjustments are necessary for the adequacy.
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43

Lubis, Rosliana y Muhammad Usman. "PEMANFAATAN KITOSAN DARI LIMBAH CANGKANG KERANG BULU(Anadara inflata) SEBAGAI BAHAN PENJERNIH AIR SUNGAING DARI LIMBAH KULIT DURIAN". BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) 1, n.º 1 (22 de julio de 2014): 35–39. http://dx.doi.org/10.31289/biolink.v1i1.16.

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The title of this study is the utilization of chitosan from shellfish waste as water purifier. The purpose of the study is to utilize coagulant of shellfish waste in water treatment proes into clear water. The research variabel are the concentration of chitosan 1,3,5,7, and 9 g/l. The particle size of chitosan used in this research is 150 mesh. The time consume 8 hours for purification process. The result showed that 9 g/l chitosan shell waste is effective to water purification process. At a concentration of 9 g/l. Chitosan shellfish waste can produce clean water in complianee with health minister No. 416/MENKES/PER/IX/1990 about water quality treatment.
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44

Li, Gang, Chun Hong Hao, Yu Ming Jing, Dao Xing Liu y Yi Li. "Eutrophication Problems of Recycled Water for Landscape Water and Ecological Restoration". Applied Mechanics and Materials 361-363 (agosto de 2013): 938–41. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.938.

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As the high background values of nutrients poor self-purification capacity, Landscape Water with reclaimed water as water easily happen water eutrophication, finally lead to water blooms. This paper reviews progress of the reuse of reclaimed water for landscape water, detailed analysis the cause of landscape water eutrophication. For algal blooms, ecological restoration research on the eutrophication landscape water in recent years is summarized, such as phytoremediation, animal remediation and microbial remediation.
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45

Reshnyak, Valerii I., Aleksandr I. Kaliaush y Ksenia V. Reshnyak. "DEVELOPMENT OF BALLAST WATER PURIFICATION AND DISINFECTION TECHNOLOGY". Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S. O. Makarova 14, n.º 3 (2 de septiembre de 2022): 365–73. http://dx.doi.org/10.21821/2309-5180-2022-14-3-365-373.

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The technology of purification and disinfection of ballast water developed by the authors is presented in the paper. Based on the results of a systematic analysis of the problem and on research experience in this field, it has been shown that the quality of ballast water discharged overboard after its use as ballast is determined by such basic factors as purification technology and design features of treatment devices, as well as conditions for operations with ballast water. The technology of ballast water purification as a complex of operations for purification, treatment and disinfection is determined by environmental requirements for the quality of purified and discharged overboard water, as well as the properties of the initial ballast water. The analysis of modern environmental requirements for the discharge of ballast water is given. It is shown that these requirements establish the level of permissible bacteriological danger of the discharged ballast water, taking into account the dispersed characteristics of the bacteriologically dangerous substance. These requirements determine the composition of operations that should be included in the technology of purification and disinfection of ballast water. Based on the results of the analysis of environmental requirements for the quality of purified ballast water, which determine the required water quality, a number of technological solutions collectively representing the technology of water purification and disinfection are proposed and justified. As disinfection, the use of ozone as an effective oxidizer is proposed. The use of sedimentation is proposed to regulate the content of dispersed particles of pollutants. Technological solutions also take into account the need for operations with a large amount of ballast water, as well as high reception and discharge capacity. It is proposed to carry out the disinfection process in small volumes of sediment, which is a concentrated mass of bacteriological substance obtained during preliminary coagulation and sedimentation, for which ship ballast tanks can be used. The proposed technology can be applied both in ship installations and in offshore environmental protection equipment - floating or coastal, for example, port facilities.
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46

Lee, Yeonkyung. "Water Treatment Facilities as Civil Engineering Heritage from Guardian of Urban Sanitation to Symbol of Urban Colonial Modernity, in the Case of Ttukdo (Seoul) Water Purification Plant". Sustainability 12, n.º 2 (9 de enero de 2020): 511. http://dx.doi.org/10.3390/su12020511.

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Ttukdo Water Purification Plant, built in 1908, is the first modern waterworks facility in Seoul and the first waterworks industrial heritage in Korea. Modern waterworks were established in order to resolve insanitary conditions of the city as a part of modernization projects; however, it had been developed with discrimination and colonial domination under Japanese occupation. This paper investigates how Ttukdo Water Purification Plant, a product of colonial modernity, became the representative modern waterworks heritage in both aspects of a colonial and civil engineering heritage. Based on archival research, this study analyzes the transformation process of Ttukdo Water Purification Plant, and the changing meaning and value with the historical background. As a result, Ttukdo Water Purification Plant has been characterized by the universal features of water industry heritage, continuity as a facility to produce clean water, and symbolic meaning as the guardian of urban sanitation. On the other hand, Ttukdo plant is regarded as a monument which was conceived under complicated historical conditions—at the confluence of modernization, colonial rule, and emergent urban needs.
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47

Guo, Jie Zhi, Hao Guo Tang, Hong Juan Yao y Yan Mei Zhang. "Research on the Extraction and Purification of Dihydromyricetin from Ampelopsis grossedentata". Advanced Materials Research 1033-1034 (octubre de 2014): 738–43. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.738.

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Extracting dihydromyricetin from Ampelopsis grossedentata by water extraction method. The orthogonal test and single factor experiment were used to optimize the best extraction condition. The ratio of liquid and material is 20:1, extraction time is 90min, extraction temperature is 90°C,holding time is 1d. The results of comparison between two purification methods show: Purify with acetone and recrystallization with water is better. The purity of dihydromyricetin is high to 98%, recovery rate was 59.2%.
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48

Patil, Kartik Balkrishna. "Design and Fabrication of Thermosyphon Water Purification System". International Journal for Research in Applied Science and Engineering Technology 9, n.º VI (14 de junio de 2021): 2320–29. http://dx.doi.org/10.22214/ijraset.2021.34331.

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Lack of clean drinking water in rural areas is a huge problem during the occurrences of floods and other environmental disasters. Often, it takes a long time to transport potable water to these areas resulting in health issues for the residents. In this research, a solar power-based water purification system using PCM to produce clean drinking water in flood-affected areas or remote areas where potable water is difficult to obtain is proposed. Purification reduces the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, and fungi as well as reduces the concentration of a range of dissolved and particulate matter. The purification system available is not easy to get for poor people. So we are using a different technique for water purification system is solar distillation technique, which is very cheap and convenient. These Thermosyphon purification system is a modification of conventional solar still but the efficiency achieved is much higher then the conventional solar still. There are 5 major components in our design consists of Upper basin, Lower basin, Thermosyphon system, Diffusion still, and PCM chamber. The dirty water inlet is taken into Lower basin, upper basin, and diffusion still. Initially the temperature of water in the lower basin is low, so to increase the temperature of the water, thermosyphon loop system is connected with the lower basin. The energy from the lower basin is transferred to the condensing cover and the side walls of the tank which is been wasted to surroundings will be captured by upper basin and diffusion still. In diffusion still, there will be a successive plate, so energy from sidewalls will be evaporated and will be diffuse in a thin gap and it will get condense of the facing surface and that water will be collected in the outlet. We will be adding phase-changing material, which helps the purification to work on in absence of sunlight. So our basic design of the project is to increase the rate of evaporation and condensation process.
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49

Mironovs, Viktors, Juris Treijs y Edmunds Teirumnieks. "Research of Oil Product Sorption Processes by Ferromagnetic Sorbents". Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (16 de junio de 2015): 153. http://dx.doi.org/10.17770/etr2015vol1.621.

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In paper, is given overview of sorbents with ferromagnetic particles. The series of newly designed composite sorbents SOMSOR, are described. Described experiment of oil spill collection from water surface, which comprises of sorbent spreading and collection. Oil sorption by capillary forces, is discussed. Concluded that use of ferromagnetic sorbents a promising direction in the field of water purification from light oil products since it allows expanding the scope of the used powder sorbents, to use the high-mechanized methods of collecting by means of magnetic and electromagnetic devices.
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50

Qin, Ke, Sheng Li, You Cheng Xiao, Zhao Xia Lu y Fu Chuan Huang. "Pilot Producing Technology Research and Equipment Design of Biogas Purification Compression and Filling". Advanced Materials Research 823 (octubre de 2013): 585–88. http://dx.doi.org/10.4028/www.scientific.net/amr.823.585.

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Design a pilot experiment to purify biogas, remove and separate the impurities such as sulfur, water in the biogas to separate carbon dioxide and methane with the method of high pressure liquefaction. Pressure filling the methane into the cylinders after the purification and separation, which will be used for civilian or vehicle. A deep analysis to the process of pilot producing technology of the biogas purification compression and filling can solve the various practical technical problems that appear in the pilot, improve the equipment, technology and specific operations in the test, in order to facilitate industrial popularization and application.
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