Gotowe bibliografie tematyczne / Sewage – Purification – Nutrient removal

Gotowa bibliografia na temat „Sewage – Purification – Nutrient removal”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 20 lutego 2023

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Artykuły w czasopismach na temat "Sewage – Purification – Nutrient removal"

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Ma, Chao, Hui Ding, Yi Chao Sun i Xiao Wen Deng. "Removal of Nutrients from Saline Waste Sewage with Different Vertical-Flow Constructed Wetland Substrates". Advanced Materials Research 356-360 (październik 2011): 1189–94. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1189.

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In order to find the best substrates of constructed wetlands for saline waste sewage treatment, Bio-ceramic, quartz sand, zeolite and medical stone were used as filtering media for saline sewage treatment with proper proportion microbe, isolated from the sewage of the Wuqing sewage treatment plant. In this paper, the purification of the vertical-flow constructed wetlands (VFCWs) with different substrates was studied, and the component of the nitrogen in the influent and effluent was analyzed. The concentrations of chemical oxygen demand (COD), ammonia (NH4+-N), total phosphorus (TP), total nitrogen (TN) and the salinity of the influent during the experimental period were 150mg•L-1, 36 mg•L-1, 8mg•L-1, 36mg•L-1and 1.6%. Under the condition that the hydraulic loading rate was 0.25m•d-1, the average removal efficiency of COD, TP and TN were obtained about 68.81%, 32.01% and 20.72 %, respectively with Bio-ceramic; 61.92%, 31.75% and 34.33%, respectively with quartz sands; 69.47%, 35.44% and 55.28% , respectively with zeolite; and 64.77%, 32.63% and 34.72%, respectively with medical stone. This result proves that comprehensive purification of the system with zeolite is the best.
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Gulyás, Gábor, Bence Fazekas, Regina Varga i Árpád Kárpáti. "Biological Purification of Chemically Pre-Treated Dairy Wastewater before Discharge into a Municipal Sewage Systems". Hungarian Journal of Industry and Chemistry 43, nr 1 (1.06.2015): 45–48. http://dx.doi.org/10.1515/hjic-2015-0008.

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Abstract Dairy production is one of the most inefficient processes with respect to water usage in the food industry. It was estimated that the production of a litre of milk creates three to four litres of wastewater. Dairy wastewater contains a high amount of dissolved and suspended solids. Moreover, it contains high concentrations of fat, protein, and carbohydrate. Consequently, the dairy wastewater content of organic compounds is high and so is its chemical oxygen demand. The majority of organic compounds are biodegradable with a high biological and chemical oxygen demand ratio. In this work, we examined the biological purification of physico-chemically pretreated wastewater from a Hungarian milk-processing factory before it was discharged into the public sewage system. The chemical oxygen demand of the pre-treated wastewater ranged from 500 to 2500 mg dm-3. We found that it was possible to achieve efficient organic material removal from nutrient-poor wastewater without nutrient dosage contrary to the literature. The activated sludge system manifested efficient organic material removal that required a smaller biological volume. Experiments with biofilms have shown that a thicker biofilm needs more dissolved oxygen, which dictates oxygen input levels to be sufficient for creating an aerobic environment.
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Hosoi, Y., Y. Kido, H. Nagira, H. Yoshida i Y. Bouda. "Analysis of water pollution and evaluation of purification measures in an urban river basin". Water Science and Technology 34, nr 12 (1.12.1996): 33–40. http://dx.doi.org/10.2166/wst.1996.0297.

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The inflow of pollutant load from urban areas and the stagnation of water due to sea water intrusion cause the deterioration of river water quality in tidal zone. In order to improve water quality, various measures such as the reduction of pollutant load by sewage systems, discharge control from sewage treatment plants considering river flow, nutrient removal by aquatic plants, and the dredging of bottom sediments have been examined. The choice of these measures depends on the situation of the river environment and finances. In this study, a field survey was carried out in a typical urban river basin, first. Secondly, on the basis of this survey, a mathematical model was formed to simulate flow and water quality. Several purification alternatives designed for the investigated river basin were comparatively evaluated from the viewpoint of the effect of water quality improvement and their cost. Finally, they were prioritized. Through this case study, a planning process of river water quality management was shown.
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Wei, Yulu, Chaokun Li, Liu Han, Hui Xi, Yinqiang Tian, Kanfolo Franck Hervé Yeo i Wendong Wang. "Radial Oxygen Loss of Three Plants under Hydroponic Culture and Its Relationships with Pollution Removal". Water 15, nr 3 (29.01.2023): 532. http://dx.doi.org/10.3390/w15030532.

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The growth status, root exudates, radial oxygen loss, and sewage purification effect of plants acclimated with sewage and cultured with a nutrient solution were studied by selecting Acorus gramineus Aiton, Pistia stratiotes L., and Eichhornia crassipes (Mart.) Solms with the same individual size. The results showed that the root oxygen secretion rate of the Acorus gramineus Aiton was higher in light and dark conditions. For a single plant species, the oxygen secretion rate under light conditions was much higher than that under dark conditions. The root oxygen secretion rate of Acorus gramineus Aiton was the highest (2.03 µmol O2/h/plant), followed by Pistia stratiotes L. (1.68 µmol O2/h/plant), and the root oxygen secretion rate of Eichhornia crassipes (Mart.) Solms was the lowest (1.15 µmol O2/h/plant). After a period of adaptation, plants showed strong removal effects on COD, NH3-N, TN, and TP. The removal intensity was in the order of Acorus gramineus Aiton > Pistia stratiotes L. > Eichhornia crassipes (Mart.) Solms; the higher the temperature, the bigger the removal rate. These results were consistent with Acorus gramineus Aiton‘s organic matter secretion and radial oxygen loss, which were better than those of Pistia stratiotes L. and Eichhornia crassipes (Mart.) Solms. Three kinds of plants had better COD removal effects in an acidic environment and better TP removal effects in an alkaline environment. The results show that using the Acorus gramineus Aiton can achieve better remediation of polluted water bodies.
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Tsytlishvili, Kateryna. "Experimental Investigations of Removal of Phosphorus Compounds from Wastewater under Biological Purification". Key Engineering Materials 925 (11.07.2022): 159–67. http://dx.doi.org/10.4028/p-p0fnoc.

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Today, most surface waters of Ukraine are eutrophied due to the entry into water bodies of a significant amount of nutrients – compounds of carbon, nitrogen and phosphorus. Nitrogen and phosphorus enter water bodies with wastewater, sewage from agricultural lands and livestock farms, as well as with precipitation, due to the decomposition of water biomass, aquatic vegetation and zoocenoses. In the presence of free carbon dioxide (the concentration of which depends on bicarbonate alkalinity and water pH) and at certain rates of biochemical oxygen utilization (BOD) 7.2 g of nitrogen and 1 g of phosphorus produce 115 g of algae, which decomposition then consumes 115 g of oxygen [1].
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Naz, Safina, Muhammad Akbar Anjum, Bushra Sadiq, Riaz Ahmad, Muhammad Ahsan Altaf, Mohamed A. El-Sheikh i Awais Shakoor. "Purification of Sewage Wastewater though Sand Column Filter for Lessening of Heavy Metals Accumulation in Lettuce, Carrot, and Cauliflower". Water 14, nr 22 (20.11.2022): 3770. http://dx.doi.org/10.3390/w14223770.

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Sewage wastewater is one of the richest sources of mineral nutrients contributing toward plant growth and yield. However, the accumulation of heavy metals in the edible parts of vegetables and fruits can be dangerous to life. The current research aimed to evaluate the performance of a sand column filter for the elimination of heavy metals from sewage wastewater applied to selected vegetables. The contents of heavy metals, i.e., Pb+2, Ni+2, Cu+2, and Fe+2, were estimated to be higher in untreated sewage wastewater than in treated water. The number of leaves, fresh and dry weights of leaves, roots, and total biomass of lettuce, carrot, and cauliflower were improved due to the irrigation of unfiltered sewage wastewater compared to sewage wastewater. The curd diameter, fresh and dry weights of curd, stem fresh weight of cauliflower, and the root length and diameter of carrot increased after irrigation with the unfiltered sewage wastewater in comparison to the treated sewage wastewater. The accumulation of heavy metals, i.e., Pb+2, Ni+2, Cu+2, and Fe+2, was higher in the roots, leaves, and edible parts of the selected vegetables. In the present study, the Cd+2 and Cr+2 concentrations were not affected by the filtration process through a sand column filter. Conclusively, filtration through a sand column filter is effective for the removal of heavy metals from sewage wastewater used to irrigate agricultural land.
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Yang, Shun-Qing, Xian-Qiu Zhang, Rui-Ming Han, Ming-Xia Du, Ke-Wei Dai i Xue Han. "The enhanced effect of supplemented lighting on nutrient removal by an aquatic vegetables (lettuce) purification system from rural domestic sewage". International Journal of Phytoremediation 21, nr 10 (1.04.2019): 953–57. http://dx.doi.org/10.1080/15226514.2019.1583719.

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Lakatos, Gyula, Magdolna K. Kiss, Marianna Kiss i Péter Juhász. "Application of constructed wetlands for wastewater treatment in Hungary". Water Science and Technology 35, nr 5 (1.03.1997): 331–36. http://dx.doi.org/10.2166/wst.1997.0230.

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This paper presents a brief survey of the Hungarian constructed wetland types that have been established for wastewater treatment in the last thirty years, and gives an analysis of the design and performance of those reed ponds that have been constructed for the polishing of petrochemical wastewaters. Natural treatment processes are in great demand because they are protective of the environment and have low operation costs and satisfactory purification efficiency. Three major types of treatment wetlands are utilized in Hungary: free water surface system, subsurface flow system, and artificial floating meadow system. Since the 1970s, the petrochemical industry has utilized sewage treatment systems consisting of ponds of emergent and/or submerged macrophyte vegetation that operate as free water surface systems. In the wastewater treatment system of Nyirbogdány, the average COD removal efficiency is around 60%, while the reed-submerged weeds pond has an efficiency of 25%. In the reed pond of the TIFO post-treatment pond system, the total phosphorus removal averaged 40% for several years, while the nitrogen removal efficiency has not exceeded 35%. For both constructed wetlands, the nutrient stabilising and heavy metal accumulating role of the aquatic plant-periphyton complex has been quantified, and the biological water quality has been found to be typical of any other natural water bodies.
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Verma, Lal Ji, Pramod Kumar Singh i Saurav Ambastha. "Heavy Metal Removal from Domestic Wastewater Employing Live Eichhornia Crassipes". SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 9, nr 01 (25.06.2017): 47–50. http://dx.doi.org/10.18090/samriddhi.v9i01.8337.

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This study uses naturally growing water hyacinth for wastewater purification system, this is an alternative technique of heavy metal remediation. These plants enhance the removal of pollutants by consuming part of them in the form of the plant nutrients. The vascular plants cultured in such treatment system perform several functions, including assimilation and storing contaminates, transporting O2 to root zone, and providing a substrate for microbial activity, canal containing floating macrophytes. This applies to municipal wastewater, in particular, where treatment units of different size can be applied at the pollution source and consumes less energy for the running. The effectiveness of wastewater purification by different plants was tested on laboratory and pilot scales. The aquatic plants system offers an environmentally friendly and cost effective technology, which have been used for removing Cadmium, Iron and Copper from wastewater. Batch experiments verified that the plants are capable of decreasing all tested indicators for water quality to levels that permit the use of purified water for irrigation, which poses serious problems in various locations throughout the country. It is shown that mixture of wastewater from in front of Gautam Budha University canal/ Greater Noida’s canal wastewater and Galgotias University sewage treatment plants. The removal efficiency of the Cadmium, Iron and Copper is 74.52%, 75.31% and 67.75% in greater Noida’s canal and 73.72%, 74.99 % and 68.37% in Galgotias University’s wastewater respectively.
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Netter, Robert. "Planted Soil Filter – A Wastewater Treatment System for Rural Areas". Water Science and Technology 28, nr 10 (1.11.1993): 133–40. http://dx.doi.org/10.2166/wst.1993.0220.

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Three planted soil filters for wastewater treatment (constructed wetlands with subsurface water flow) were investigated over an extended period of time. Each of them was filled with different kinds of soil. The filters were planted with helophytes, and loaded with septic tank effluent, with pre-treated combined sewage respectively. The hydraulic surface loading varied from 4 to 60mm/d and the specific BOD5 mass loading from 0.9 to 8.7g per square metre per day. The purification efficiency varied between 61 and 99% with respect to BOD5 and COD. The elimination of nutrients (Ntot and Ptot) varied between 5 and almost 100%. The removal rate of the total bacterial count, conforms, faecal coliforms and faecal streptococci was significant.
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Rozprawy doktorskie na temat "Sewage – Purification – Nutrient removal"

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Wong, Chiew Hiet. "Intergrated design of biological nutrient removal systems / by Chiew Hiet Wong". Thesis, The University of Sydney, 2001. https://hdl.handle.net/2123/27929.

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凌偉忠 i Wai-chung Jackson Ling. "Biological nutrient removal in sequencing batch reactors using fibrouspacking medium". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31213388.

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Sun, Feiyun, i 孙飞云. "A membrane bioreactor (MBR) for a biological nutrient removal system: treatment performance, membrane foulingmechanism and its mitigation strategy". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44903856.

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Zeng, Raymond Jianxiong. "The role of intracellular storage products in biological nutrient removal /". St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16445.pdf.

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Abu-Ghararah, Ziad. "The effect of influent organic compounds on the performance of biological nutrient removal systems". Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/77907.

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The main objective of the research was to investigate the effect of influent organic compounds on the performance of biological nutrient removal system. To carry out the investigation, a pilot plant system was designed and constructed. The system was operated as a UCT process at an influent flow rate of 0.15 liters/minute and a sludge age of 13 days. The influent wastewater was domestic sewage. Excess biological phosphorus removal and steady-state conditions were established before making experimental measurements, or adding supplemental substrate. The effects of separate addition of formic, acetic, propionic, butyric, isobutyric, valeric, and isovaleric acid, plus glucose, addition on phosphorus release under anaerobic conditions, and phosphorus uptake under aerobic conditions, were studied. The effects of the organic acid additions on the removal of nitrogen and COD, and changes in SOUR, MLVSS, and metals such as iron, magnesium, calcium and potassium, were also studied. In all experiments, the specific substrate was added continuously to the first anaerobic reactor for three days at an influent concentration of 100 mg COD/liter. Samples were collected from each reactor at the end of the addition period and analyzed for orthophosphate, nitrate, nitrite, sulfate, volatile fatty acids, COD, MLVSS, pH and metals. All added substrates, except formic acid and dextrose, caused significant increases in phosphorus release in the anaerobic stage, and phosphorus uptake, in the aerobic stage, and consequently, an increase in phosphorus removal efficiency. The molar ratios of phosphorus release to volatile fatty acid added obtained for propionic acid, acetic acid, butyric acid, and valeric acid were 0.44, 0.77, 0.78, and 1.72 respectively. However, on a COD basis, the greatest ratios of mg phosphorus released to mg COD utilized was produced by the addition of acetic acid (0.37) and valeric acid (0.19). It was also found that the branched organic acids, isobutyric and isovaleric, caused more phosphorus release in the anaerobic stage and better phosphorus removal efficiencies as compared with the nonbranching forms of the same organic acids. The molar ratios of phosphorus release for these two acids were 0.8 and 2.3, respectively, and on a COD basis were 0.16 and 0.25. For engineering applications, it is suggested by this research that at least 20 mg COD equivalent of acetic acid is needed for the removal of I mg phosphorus. The results obtained by this investigation were consistent with the hypothesis proposed by Marais et al., 1983. The most recent biochemical models, proposed by Comeau et al., 1986 and Wentzel et al., 1986, were also tested using the data collected in the present investigation. Both models, in most cases, overestimated the ratios of phosphorus release to volatile fatty acid utilized. A speculative model for anaerobic metabolism by poly-p bacteria of volatile fatty acids which contain both odd and even numbers of carbon atoms was proposed. All added substrates produced no effect on both COD and TKN removals. Metal releases were found to correlate with the amount of phosphorus release.
Ph. D.
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Guo, Lei. "Optimization of BNR from wastewater using SBR and A²O processes". Thesis, University of Macau, 2011. http://umaclib3.umac.mo/record=b2493027.

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Zhang, Zhenhua. "Plant growth and nutrient removal in simulated secondary-treated municipal wastewater in wetland microcosmos". University of Western Australia. School of Earth and Geographical Sciences, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0141.

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[Truncated abstract] The use of constructed wetlands for tertiary purification of municipal wastewater has received increasing attention around the world because direct discharge of secondary-treated municipal wastewater to water bodies has caused eutrophication. Plant species selection and vegetation management may enhance nutrient removal efficiency in constructed wetlands. However, there is a lack of knowledge on the relations between plant growth and nutrient removal efficiency in constructed wetlands. The objective of this study is to better understand how plant growth and resource allocation are influenced by nutrients in wastewater and how nutrient removal efficiencies are affected by plant species and vegetation management. The preliminary experiment was conducted to select macrophytes, especially ornamental species, to grow in the wastewater in the wetland microcosms. Ten plant species, comprising six ornamental species: Alocasia macrorrhiza, Canna indica, Iris louisiana, Lythrum sp., Zantedeschia aethiopica, Zantedeschia sp., and four sedge species: Baumea articulate, Baumea juncea, Carex tereticaulis and Schoenoplectus validus, were planted in the wetland microcosms and fed a simulated wastewater solution in the concentrations similar to the secondary-treated municipal wastewater. C. indica has shown vigorous and healthy growth, and a relatively high potential of rooting-zone aeration and nutrient removal efficiency. B. articulata and S. validus also showed relatively high nutrient removal efficiency. ... The high nutrient availability and optimum N/P ratio were required for stimulating plant growth, resulting in allocation of more resources to above-ground tissues compared to below-ground parts, and enhancing nutrient removal efficiency. Nutrient removal efficiencies were significantly influenced by growth of C. indica and S. validus, nutrient loading rates and N/P ratios in the wastewater. The nutrient uptake kinetics of C. indica and S. validus were investigated to elucidate the differences in nutrient uptake between species. Wetland plant species have shown differential nutrient uptake efficiency and different preferences for inorganic N source, with C. indica preferring NO3-N and S. validus preferring NH4-N. C. indica had greater capacity than S. validus to take up PO4-P when the concentration of PO4-P in the solution was relatively low, whereas S. validus was more capable than C. indica to take up NO3-N when the concentration of NO3-N in the solution was relatively low. The PO4-P uptake capacity was higher in younger than older plants. Overall, the study has suggested that different plant species have differential capacity to take up nutrients. In addition to nutrient uptake, plants have significant other roles in terms of nutrient removal from the wastewater (such as leaking oxygen into the rhizosphere in which oxidation of substances like ammonia can occur). The properly high nutrient availability and optimum N/P ratio are required to stimulate the plant growth, resulting in enhancing the treatment performance in the wetlands. These findings have important implications for improving our ability to engineer ecological solutions to the problems associated with nutrient-rich wastewater.
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Ginige, Pushpa. "Decontamination of biosolids for land application : metals bioleaching and process impacts on the nutrient value of biosolids". Thesis, Queensland University of Technology, 1998.

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au, rkurup@murdoch edu, i Rajendra Kurup. "An experimental research on application of sub-surface flow constructed wetlands for meat processing industry effluent treatment and nutrient removal". Murdoch University, 2007. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20070717.142408.

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Meat processing industries produce large volumes of high strength wastewater. Conventional technologies used in Australia and similar countries for treatment of effluent from meat processing and similar industries, such as wineries and processed food industry, are treatment ponds with or without a mechanical treatment system. A properly designed activated sludge treatment system would be capable of biological removal of phosphorus and nitrogen in addition to BOD5. These systems, however, require substantial electrical power, skilled operational support and produce large quantities of biosolids or sludge which require further on-site treatment or off site disposal. Application of sub-surface flow constructed wetland (SSF-CW) systems could provide a sustainable solution for treatment of meat processing industry effluent and other similar high strength wastewaters. There are, however, only very limited studies on application of SSF-CW for secondary treatment of high strength wastewaters. Although there have been a number of cases where SSF-CW have been used as the secondary treatment unit for municipal wastewater, this technology has not still become a common practice for the same purpose in Australia. Most of the applications are for either polishing of secondary or tertiary treated municipal wastewater or for greywater treatment. This research was funded by National Meat Industry Advisory Council (MINTRAC). Sustainable wastewater treatment has been taken up as a very important issue by meat industry. The industry provides Ph.D research scholarships through MINTRAC to develop new technologies for wastewater treatment and nutrient removal from meat processing effluent. The main objective of the research was to develop process engineering design parameters for sub-surface flow constructed wetland (SSF-CW) with Monto vetiver (Vetiveria zizanioides recently reclassified as Chrysopogon zizanioides) as the emergent vegetation for treatment of high strength, nutrient rich wastewater. The study also investigated the phosphorus retention properties of pea gravel for use in SSF-CW system as bed media or as an external phosphorus removal system for meat processing industry effluent. In addition, chemical methods for phosphorus removal from meat processing industry effluent were also investigated. The thesis is based on experimental research. The research consisted of three types of experimental set up; a) using two laboratory experimental SSF-CW reactors (one with vetiver grass and the other reactor with no vegetation) in a greenhouse with batch feeding of artificial wastewater that simulates meat industry effluent, b) experiment with pea gravel of different particle sizes and solutions of different phosphorus (P) concentrations in a constant temperature room, c) laboratory experiment using actual meat processing industry effluent with alum and sodium aluminate for P removal. The structure of the thesis is as follows. Following the Introduction is the section of Literature Review, then sections on the experiments that follow a journal paper format, followed by a General Discussion, Conclusions and Recommendations. A list of references is provided at the end of the thesis. The literature review section has four chapters (Chapter 2 to Chapter 5). Chapter 2 describes a review of meat processing industry effluent characteristics and current treatment technologies. Chapter 3 is a critical review of current literature on COD removal using sub-surface flow constructed wetlands (SSF-CW). Chapter 4 and 5 describe a review of various processes and models on the fate of nitrogen and phosphorus in SSF-CW system respectively. Chapters 6 to 10 deal with experimental research part of the thesis. Chapters, 6, 7 and 8 share a common methodology section which is described in Chapter 6. Results of the batch experiments with the laboratory SSF-CW systems on COD removal, nitrogen removal and phosphorus retention are discussed in Chapters 6, 7 and 8 respectively. Chapter 9 explains a detailed experimental study on phosphorus adsorption dynamics of pea gravel. Chapter 10 discusses the results on experiments using sodium aluminate and aluminium sulphate for P removal from meat processing industry effluent as an alternate P removal method for such effluent. An overview of the major results of the experimental section is discussed in chapter 11, in the General Discussion section. Conclusions and Recommendations of the research are provided in Chapter 12. In this study, it was observed that Monto vetiver grass performed better during nitrification than in denitrification, where the plant did not survive. Ammonium N removal followed a first order decay in both vegetated and un-vegetated experimental SSF-CW system with average removal ranging from 40 to 60 % of the influent. Denitrification was found to be the pathway for nitrate removal. As long as the carbon source was available, the denitrification followed a first order exponential decay, with over 80% of nitrate was removed in 48 hours. Vetiver grass sustained elevated ammonium levels of approximately 200 mg/L or more, however it was under stress during denitrification and it eventually died. The experimental SSF-CW systems with pea gravel as bed media could effectively retain soluble reactive phosphorus (SRP) in the wetland cells during experiments of COD reduction and nitrification (with ammonia and high COD input). However, during denitrification study, both experimental SSF-CW cells did not show significant removal of SRP from wastewater. The vegetated cell removed nearly 50% of the input SRP, however, the un-vegetated cell did not show any trend for SRP removal, and in some cases the effluent SRP was nearly 90% of the input value. The role of Monto vetiver grass for N and P removal was found to be very minor and this study concluded that nutrient removal (N & P) by plant uptake could be neglected in the design of SSF-CW system with Monto vetiver grass. Adsorption is the major mechanism for P removal from the experimental SSF-CW systems, where pea gravel was used as bed media. The P adsorption capacity of pea gravel increased with decrease in particle size. For 16 to 18 mm, the Langmuir adsorption maximum was 99 mg/kg, whereas for very fine pea gravel powder (<150 ìm) the maximum adsorption observed experimentally was 3950 mg/kg. In a typical wetland with pea gravel as bed media for meat processing industry, the media would be capable of P retention for about 2 to 3 years of operation. Supplementary chemical removal method is needed for sustainable P removal once the adsorption maximum of wetland cell is reached. A chemical P removal system using liquid alum and NaOH for pH stabilisation is more appropriate than sodium aluminate. Application of sodium aluminate for P removal for meat processing industry effluent is found to be less effective as it would need higher dosage, longer settling period, coloured supernatant, acid addition for pH adjustment. Liquid alum application rate is recommended to be between a molar ratio of Al: P of 3 for TP value of <1 mg/L in the treated effluent. This research study concludes that horizontal flow SSF-CW system with Monto vetiver grass is suitable for COD removal and nitrification from high strength wastewater. Current design equation of horizontal flow SSF-CW system is mostly plug flow exponential decay method, but in this study, it has been concluded that retarded first order rate constant is the most appropriate design method for horizontal flow SSF-CW system for COD removal.
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Randall, William O. "The Effects of a phosphate detergent ban on a biological nutrient removal plant and anaerobic digester /". Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03122009-040637/.

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Książki na temat "Sewage – Purification – Nutrient removal"

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J, Horan N., Lowe Paul i Stentiford Ed I, red. Nutrient removal from wastewaters. Lancaster, Pa: Technomic Pub. Co., 1994.

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Water Environment Federation. Task Force on Biological and Chemical Systems for Nutrient Removal. i Water Environment Federation. Municipal Subcommittee., red. Biological and chemical systems for nutrient removal: A special publication. Alexandria, Va: Water Environment Federation, 1998.

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P, Bernhart Alfred. Evapotranspiration nutrient uptake soilinfiltration of effluent water. Toronto, Can: A.P. Bernhart, 1985.

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Davitt, Michel. Pilot plant studies of biological nutrient removal. Dublin: UniversityCollege Dublin, 1996.

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International Conference on Nutrient Recovery from Wastewater Streams (2009 Vancouver, B.C.). International Conference on Nutrient Recovery from Wastewater Streams: May 10-13, 2009, the Westin Bayshore Hotel and Resort, Vancouver, British Columbia, Canada. Redaktorzy Ashley Kenneth Ian 1954-, Mavinic Donald S. 1946-, Koch Frederic A. 1947- i International Water Association. London, UK: IWA Publishing, 2009.

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Cooper, C. M. Assessment of a constructed bulrush wetland for treatment of cattle waste: 1991-1994. Oxford, Miss: National Sedimentation Laboratory, 1995.

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LLP Cameron Engineering & Associates. Newsday STM-aerotor industrial wastewater treatment efficiency study full scale nutrient removal pilot: Final report. Albany, N.Y.]: NYSERDA, 2004.

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W, Randall Clifford, Barnard James L i Stensel H. David, red. Design and retrofit of wastewater treatment plants for biological nutrient removal. Lancaster, Pa: Technomic Pub. Co., 1992.

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Olsson, Gustaf. Wastewater treatment systems: Modelling, diagnosis and control. London: IWA Publishing, 1999.

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Seminar on Nutrients Removal from Municipal Waste Water (1989 Tampere, Finland). Seminar on Nutrients Removal from Municipal Waste Water: 4-6 September 1989 Tampere, Finland. Helsinki: Baltic Marine Environment Protection Commission, 1990.

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Części książek na temat "Sewage – Purification – Nutrient removal"

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Asmus, Udo, i Nina Zaletova. "Measures for Nutrient Removal from Sewage Wastewaters in Estonia". W Chemical Water and Wastewater Treatment, 429–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76093-8_28.

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Najibul Hasan, Mohd, Abid Ali Khan, Sirajuddin Ahmed, Henna Gull, Mohammed Sharib Khan i Beni Lew. "Feasibility of Aquatic Plants for Nutrient Removal from Municipal Sewage in Smart Cities". W Lecture Notes in Civil Engineering, 377–85. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2545-2_32.

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Kappa, Stavroula, i Simos Malamis. "Integration of Forward Osmosis in Municipal Wastewater Treatment Applications". W Osmotically Driven Membrane Processes [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95867.

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Streszczenie:
In recent years, the research community has made constant efforts to develop new technologies for the recovery and valorization of water, nutrient and energy content of municipal wastewater. However, the recovery process is significantly limited due to the low-strength of sewage. Over the last 10 years, the Forward Osmosis (FO) process, has gained interest as a low-cost process with low membrane fouling propensity, which can convert municipal wastewater into a concentrated low-volume effluent, characterized by high organic and nutrient concentration. This chapter presents the main configurations that have been implemented for the concentration of municipal wastewater using FO, including their performance in terms of contaminant removal and water/reverse salt flux (Jw/Js). Furthermore, the draw solutions and respective concentrations that have been used in FO for the treatment of sewage are reported, while at the same time the positive and negative characteristics of each application are evaluated. Finally, in the last section of this chapter, the spontaneous FO followed by anaerobic process is integrated in a municipal wastewater treatment plant (WWTP) and compared with a conventional one. The comparison is done, in terms of the mass balance of the chemical oxygen demand (COD) and in terms of the energy efficiency.
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Streszczenia konferencji na temat "Sewage – Purification – Nutrient removal"

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Yan, Li, i Zhang Yanqiu. "Study on Factors of Affecting a New SBR Reactor for Nutrient Removal from Municipal Sewage". W 2010 International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2010. http://dx.doi.org/10.1109/icdma.2010.314.

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Chang, Ni-Bin, Marty Wanielista, Zhemin Xuan i Ammarin Daranpob. "Using a Subsurface Upflow Wetland for Nutrient and Pathogen Removal in an On-Site Sewage Treatment and Disposal System". W World Environmental and Water Resources Congress 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41114(371)108.

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Chang, Ni-Bin, Marty Wanielista, Fahim Hossain, Zhemin Xuan i Ammarin Daranpob. "Nutrient and Pathogen Removal in a Passive On-Site Sewage Treatment and Disposal System (OSTDS) with a Recirculation Filtration Tank". W World Environmental and Water Resources Congress 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41114(371)107.

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