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Journal articles on the topic 'Biological wastewater treatment'

To see the other types of publications on this topic, follow the link: Biological wastewater treatment.

Author: Grafiati

Published: 4 June 2021

Last updated: 11 March 2023

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1

Pavlostathis, Spyros G., and Shabbir A. Jungee. "Biological Treatment of Photoprocessing Wastewaters." Water Science and Technology 29, no. 9 (May 1, 1994): 89–98. http://dx.doi.org/10.2166/wst.1994.0450.

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The activated sludge and anaerobic digestion processes were used for the biological treatment of photoprocessing wastewaters from two commonly used photoprocesses, namely KODAK Flexicolor Process C-41 and KODAK Ektacolor Process RA-4. Photoprocessing wastewaters were simulated in the laboratory and fed to fill-and-draw activated sludge reactors at loading levels less than or equal to 100% v/v along with a synthetic base feed. Up to 68% photoprocessing wastewater-derived COD removal was achieved by the fill-and-draw activated sludge reactors. Ammonia removal was achieved by all reactors, although some degree of nitrification inhibition -- manifested by the accumulation of nitrite -- was observed in some of the photoprocessing wastewater treating reactors. The performance of digesters fed with activated sludge generated in the presence of photoprocessing wastewaters (up to 50% v/v levels) matched or even surpassed that of the control digester (fed activated sludge without any photoprocessing wastewaters present). Digester failure -- accompanied by a cessation of gas production, increase in volatile fatty acids and lowering of the pH - was observed for only the digestion of activated sludge produced from the aerobic treatment of 100% photoprocessing wastewaters, primarily due to inhibition of methanogenesis. However, with prolonged incubation, digester recovery was observed.

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2

Raïssi, Nadia, Mustapha Serhani, and Ezio Venturino. "Optimizing biological wastewater treatment." Ricerche di Matematica 69, no. 2 (March 6, 2020): 629–52. http://dx.doi.org/10.1007/s11587-020-00494-9.

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3

Gulyas, H., R. von Bismarck, and L. Hemmerling. "Treatment of industrial wastewaters with ozone/hydrogen peroxide." Water Science and Technology 32, no. 7 (October 1, 1995): 127–34. http://dx.doi.org/10.2166/wst.1995.0217.

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Treatment with ozone and ozone/hydrogen peroxide was tested in a laboratory scale reactor for removal of organics from four different industrial wastewaters: wastewaters of a paper-mill and of a biotechnical pharmaceutical process as well as two process waters from soil remediation by supercritical water extraction. Moreover, an aqueous solution of triethyleneglycoldimethylether and humic acid which was a model for a biologically treated oil reclaiming wastewater was also oxidized. The aim of the oxidation of the pharmaceutical wastewater was the removal of the preservative 1.1.1-trichloro-2-methyl-2-propanol (TCMP). Although TCMP could easily be removed from pure aqueous solutions by treatment with ozone/hydrogen peroxide, the oxidation of the wastewater failed to be effective in TCMP degradation because of competitive ozonation of other organic solutes in the wastewater. The ozonation of the paper-mill wastewater and of the soil remediation process waters decreased COD and TOC to some extent. The presence of organic wastewater solutes which contain C-C double bonds (ligninsulfonic acid in the treated paper-mill effluent and humic acid in the oil reclaiming model wastewater) were shown to yield hydrogen peroxide by the reaction with ozone. Therefore, these wastewaters are efficiently ozonated even without addition of hydrogen peroxide. Chemical Oxidation of paper-mill wastewater and of wastewaters resulting from soil remediation did not improve biological degradability of organic wastewater constituents.

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4

Obodovych, O. M. "Application of aeration-oxidative jet-looped setup for biological wastewater treatment." Biotechnologia Acta 11, no. 2 (February 2018): 57–63. http://dx.doi.org/10.15407/biotech11.02.057.

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5

Lettinga, G. "Sustainable integrated biological wastewater treatment." Water Science and Technology 33, no. 3 (February 1, 1996): 85–98. http://dx.doi.org/10.2166/wst.1996.0061.

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The actual and potential benefits of anaerobic wastewater treatment when implemented at the core of a sustainable and non-vulnerable environmental protection programme are described. The paper focuses on the anaerobic sludge bed (and in particular the expanded granular sludge bed (EGSB)) reactor concept. Start-up of these systems is shown to be rapid, within a few days with granular seed sludges, and they may be applied across a wide range of conditions and strengths of wastewater. EGSB systems are particularly suited to low temperatures (10°C) and very low strengths (<<1000mg/1) and for the treatment of recalcitrant or toxic substrates.

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6

Mayabhate, S. P., S. K. Gupta, and S. G. Joshi. "Biological treatment of pharmaceutical wastewater." Water, Air, and Soil Pollution 38, no. 1-2 (March 1988): 189–97. http://dx.doi.org/10.1007/bf00279597.

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7

Vanhooren, Henk, Jurgen Meirlaen, Youri Amerlinck, Filip Claeys, Hans Vangheluwe, and Peter A. Vanrolleghem. "WEST: modelling biological wastewater treatment." Journal of Hydroinformatics 5, no. 1 (January 1, 2003): 27–50. http://dx.doi.org/10.2166/hydro.2003.0003.

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Modelling is considered to be an inherent part of the design and operation of a wastewater treatment system. The models used in practice range from conceptual models and physical design models (laboratory-scale or pilot-scale reactors) to empirical or mechanistic mathematical models. These mathematical models can be used during the design, operation and optimisation of a wastewater treatment system. To do so, a good software tool is indispensable. WEST is a general modelling and simulation environment and can, together with a model base, be used for this task. The model base presented here is specific for biological wastewater treatment and is written in MSL-USER. In this high-level object-oriented language, the dynamics of systems can be represented along with symbolic information. In WEST's graphical modelling environment, the physical layout of the plant can be rebuilt, and each building block can be linked to a specific model from the model base. The graphical information is then combined with the information in the model base to produce MSL-EXEC code, which can be compiled with a C++ compiler. In the experimentation environment, the user can design different experiments, such as simulations and optimisations of, for instance, designs, controllers and model fits to data (calibration).

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8

Siezen, Roland J., and Marco Galardini. "Genomics of biological wastewater treatment." Microbial Biotechnology 1, no. 5 (August 18, 2008): 333–40. http://dx.doi.org/10.1111/j.1751-7915.2008.00059.x.

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9

LaPara, Timothy M., and James E. Alleman. "Thermophilic aerobic biological wastewater treatment." Water Research 33, no. 4 (March 1999): 895–908. http://dx.doi.org/10.1016/s0043-1354(98)00282-6.

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10

Voronov, Y. V., and S. P. Bertsun. "Biological wastewater treatment in brewhouses." Vestnik MGSU, no. 3 (March 2014): 205–11. http://dx.doi.org/10.22227/1997-0935.2014.3.205-211.

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11

Smythe, Gary, Guy Matelli, Mike Bradford, and Carlos Rocha. "Biological treatment of salty wastewater." Environmental Progress 16, no. 3 (1997): 179–83. http://dx.doi.org/10.1002/ep.3300160313.

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12

Lemmer, Hilde. "Scum in Biological Wastewater Treatment." Acta hydrochimica et hydrobiologica 33, no. 3 (July 2005): 187. http://dx.doi.org/10.1002/aheh.200590013.

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13

BELYaKOV, A. V. "RESEARCH OF OIL REFINING PLANT WASTEWATER’S ONE-STAGE BIOLOGICAL TREATMENT." Urban construction and architecture 3, no. 4 (December 15, 2013): 24–27. http://dx.doi.org/10.17673/vestnik.2013.04.4.

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The article reports on the research results of wastewaters biological treatment at Novokuibyshevsk oil refining plant using the technology of nitrification - denitrification. The paper reveals the possibility of meeting modern requirements for treated water quality by nitrogen compounds while treating industrial wastewater without mixing it with municipal wastewater. Necessary dependencies and technological parameters for choosing the mode of experimental and production use of treatment structures by one-stage scheme with nitrification-denitrification are given.

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14

Zhang, Y., H. Shi, and Y. Qian. "Biological treatment of printing ink wastewater." Water Science and Technology 47, no. 1 (January 1, 2003): 271–76. http://dx.doi.org/10.2166/wst.2003.0066.

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Printing ink wastewater is usually very difficult to treat biologically and its chemical oxygen demand (COD) far exceeds standards of discharge. The COD in wastewater is usually 3,000 to 8,000 mg/L after flocculation and sedimentation. Herein, a strain of bacterium was isolated from the sludge and identified as Bacillus sp. and utilized to treat printing ink wastewater. The application of bacteria to degrade printing ink in wastewater is discussed in this paper. The influence of N and P sources on COD removal, and COD removal in combination with glucose was also discussed. More than 85 per cent of the COD could be removed using the proposed biological process. A novel internal airlift loop bioreactor with bacteria immobilized onto ceramic honeycomb support was used for the wastewater treatment.

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15

Vijatov, Tatjana, Gordana Dražić, and Filip Jovanović. "Environmental aspects of biological wastewater treatment by different methods and microorganisms." Sustainable Forestry: Collection, no. 81-82 (2020): 133–47. http://dx.doi.org/10.5937/sustfor2081133v.

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The biological treatment of wastewaters (municipal and industrial) is an important topic in the field of biochemistry and biotechnology, as well as in the field of environmental engineering. It has many advantages, such as the simple operation of the basic bioreactor, the potential for the production of valuable bioproducts and efficient wastewater treatment in a short time. However, the biological wastewater treatment also has certain downsides, such as air pollution in places which are near bio-lagoons, and endangering the health of personnel involved in this process. By studying and analyzing data from the reference literature, this paper provides a comprehensive overview of information on microorganisms involved in the wastewater treatment process, the factors with a negative effect on their development, as well as the negative effects of these microorganisms and the biological wastewater treatment process on the environment.

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16

Eckenfelder, W. Wesley, and A. J. Englande. "Innovative biological treatment for sustainable development in the chemical industries." Water Science and Technology 38, no. 4-5 (August 1, 1998): 111–20. http://dx.doi.org/10.2166/wst.1998.0596.

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This paper presents a perspective of wastewater management in the chemical industries as related to sustainable development. The scope of wastewater management must therefore further be expanded to include the concept of ecological integrity of receiving waters. Ecological integrity of receiving waters is compromised by contaminants which are not effectively removed by Best Conventional Technology (BCT). Biological treatment typically offers the most cost-effective conversion and/or stabilization of wastewaters; however, modifications must be employed in the design and operation to provide satisfactory effluent quality. Enhanced treatment techniques for wastewaters containing high organic concentrations, VOCs, elevated TDS levels, toxics and priority pollutants are discussed. The importance of design and operational procedures including pretreatment technologies, two stage vs. single stage activated sludge, selector design and maximum specific oxygen uptake rate determinations are also presented.

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17

Sahu, Omprakash. "Reduction of Organic and Inorganic Pollutant from Waste Water by Algae." International Letters of Natural Sciences 13 (April 2014): 1–8. http://dx.doi.org/10.18052/www.scipress.com/ilns.13.1.

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Recently, algae have become significant organisms for biological purification of wastewater since they are able to accumulate plant nutrients, heavy metals, pesticides, organic and inorganic toxic substances and radioactive matters in their cells/bodies. Biological wastewater treatment systems with micro algae have particularly gained importance in last 50 years and it is now widely accepted that algal wastewater treatment systems are as effective as conventional treatment systems. These specific features have made algal wastewaters treatment systems an significant low-cost alternatives to complex expensive treatment systems particularly for purification of municipal wastewaters. By this method 70 % of biological oxygen demand, 66 % of chemical oxygen demand, 71 % total nitrogen, 67 % of phosphorus, 54 % volatile solid and 51 % of dissolved solid was reduced

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18

Sahu, Omprakash. "Reduction of Organic and Inorganic Pollutant from Waste Water by Algae." International Letters of Natural Sciences 13 (April 12, 2014): 1–8. http://dx.doi.org/10.56431/p-8aq47u.

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Recently, algae have become significant organisms for biological purification of wastewater since they are able to accumulate plant nutrients, heavy metals, pesticides, organic and inorganic toxic substances and radioactive matters in their cells/bodies. Biological wastewater treatment systems with micro algae have particularly gained importance in last 50 years and it is now widely accepted that algal wastewater treatment systems are as effective as conventional treatment systems. These specific features have made algal wastewaters treatment systems an significant low-cost alternatives to complex expensive treatment systems particularly for purification of municipal wastewaters. By this method 70 % of biological oxygen demand, 66 % of chemical oxygen demand, 71 % total nitrogen, 67 % of phosphorus, 54 % volatile solid and 51 % of dissolved solid was reduced

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19

Dracea, Dragos, Augustina Tronac, and Sebastian Mustata. "Current Trends in Biological Wastewater Treatment." “Agriculture for Life, Life for Agriculture” Conference Proceedings 1, no. 1 (July 1, 2018): 373–76. http://dx.doi.org/10.2478/alife-2018-0055.

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Abstract Waste water treatment plants are complex systems consisting of construction, hydro-mechanical, electrical, monitoring and automation equipment. Monitoring activities emphasize that the processes are dynamic; wastewater quality at the entering point of treatment plant varies in a wide range. Treatment technologies adopted must reduce major pollutants; that involves nitrification-denitrification processes and biological and chemical reduction of phosphorus through mechanical-chemical-biological treatment pathways. Increasing the activated sludge concentration in a wastewater treatment plant is an effective method by altering the process dynamics and by reducing the produced sludge volume. There are proposed and discussed in terms of technical and cost efficiency different technological wastewater treatment schemes. In Romania, wastewater treatment plants and sewage systems operating involve processes based on the new systems overrated, there is mandatory to diminish quantities in water supply systems and to exclude improperly working of wastewater pre-treatment stations. Those operations impose technological measures ensuring efficient functioning regardless the service conditions.

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20

Benradi, Fatima, Ayoub Doughmi, Mohamed Khamar, Essediya Cherkaoui, Abdelaziz Laghzizil, and Abderrahman Nounah. "Biological treatment of leachate wastewater mixture." International Journal of ADVANCED AND APPLIED SCIENCES 10, no. 2 (February 2023): 23–29. http://dx.doi.org/10.21833/ijaas.2023.02.004.

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Leachates and domestic wastewater constitute a real problem for the environment, given their risks to surface water, groundwater, and the surrounding soil. Their management becomes delicate because of the demographic growth, and the standard of living of the population. Due to the reduction of water resources in the world, their treatment is very essential. In this study, samples of young raw leachate were collected and mixed with domestic wastewater. After a physicochemical and bacteriological characterization of leachate, domestic wastewater, and the mixture M1 (leachate ratios of 5%), an aerated biological treatment was carried out without adding activated sludge. Over a residence time period of six weeks, the chemical oxygen demand reduction rate reached 94.8% for the wastewater, 93.8% for the M1 mixture, and only 31.9% for the leachate. The addition of 5% young leachate to domestic wastewater does not affect the aerated biological treatment system, in addition, it is an inexpensive system.

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21

Zoric, Jelena, V. Simic, and Ana Petrovic. "On the possibility of using biological toxicity tests to monitor the work of wastewater treatment plants." Archives of Biological Sciences 60, no. 3 (2008): 431–36. http://dx.doi.org/10.2298/abs0803431z.

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The aim of this study was to ascertain the possibility of using biological toxicity tests to monitor influent and effluent wastewaters of wastewater treatment plants. The information obtained through these tests is used to prevent toxic pollutants from entering wastewater treatment plants and discharge of toxic pollutants into the recipient. Samples of wastewaters from the wastewater treatment plants of Kragujevac and Gornji Milanovac, as well as from the Lepenica and Despotovica Rivers immediately before and after the influx of wastewaters from the plants, were collected between October 2004 and June 2005. Used as the test organism in these tests was the zebrafish Brachydanio rerio Hamilton - Buchanon (Cyprinidae). The acute toxicity test of 96/h duration showed that the tested samples had a slight acutely toxic effect on B. rerio, except for the sample of influent wastewater into the Cvetojevac wastewater treatment plant, which had moderately acute toxicity, indicating that such water should be prevented from entering the system in order to eliminate its detrimental effect on the purification process.

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22

Bryant, Curtis W., and William A. Barkley. "Biological Dehalogenation of Kraft Mill Wastewaters." Water Science and Technology 24, no. 3-4 (August 1, 1991): 287–93. http://dx.doi.org/10.2166/wst.1991.0485.

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A single-stage aerobic biological treatment system was developed specifically to convert organically bound chlorine to inorganic chloride. In initial laboratory tests, greater than 90% reduction of AOX was achieved in synthetic dichlorophenol, commercial pentachlorophenol, and combined kraft wastewaters, and less than a week was required for startup/acclimation. A six-month field test of the process on a pentachlorophenol wastewater was very successful under highly variable influent conditions. No chlorinated byproducts were detected, and measurements strongly indicated that dehalogenation had occurred. Recent experiments found Cl/El wastewater to be most easily treatable by the aerobic process, followed by combined lagoon influent, El wastewater, and finally lagoon effluent. However, results have indicated that application of the treatment process to kraft AOX reduction can become feasible only if further process improvements can be defined.

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23

Tebai, Larbi, and Ioannis Hadjivassilis. "Soft Drinks Industry Wastewater Treatment." Water Science and Technology 25, no. 1 (January 1, 1992): 45–51. http://dx.doi.org/10.2166/wst.1992.0008.

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Soft drinks industry wastewater from various production lines is discharged into the Industrial Effluent Treatment Plant. The traditional coagulation/flocculation method as first step, followed by biological treatment as second step, has been adopted for treating the soft drinks industry wastewaters. The performance of the plant has been evaluated. It has been found that the effluent characteristics are in most cases in correspondence with the requested standards for discharging the effluent into the Nicosia central sewerage system.

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24

Väänänen, Pentti, Pekka Pouttu, and Timo Kulmala. "Joint Treatment of Industrial and Municipal Wastewater – Case Project: City of Kotka, Finland." Water Science and Technology 25, no. 1 (January 1, 1992): 83–92. http://dx.doi.org/10.2166/wst.1992.0013.

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The National Board of Waters in Finland has proposed a study on the joint treatment of industrial and municipal wastewaters of the City of Kotka. This study is of great interest due to the large forest products industry and food industry in Kotka. All of the wastewaters from the forest products and the food industry and the municipal sewage have been found to be suitable for biological treatment, which makes the joint treatment applicable. An activated sludge process is selected because it takes advantage of the large amount of nutrients in the municipal sewage and it has proved to be the most efficient treatment method for forest industry wastewaters. However, municipal wastewater contains more nutrients than needed for the biological process, which can cause eutrophication problems in the watercourse. To reduce the pollution caused by the nutrients, chemical treatment of the wastewater is also proposed in the joint treatment. It was concluded that the joint treatment of wastewater is economically, technically and environmentally the best way to arrange wastewater treatment for the industry and the city.

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25

Egamberdiev, N. B., Zilola Sharipjonova, Bobur Nasibov, A. O. Khomidov, M. I. Alimova, and A. A. Abdumalikov. "Biological treatment of industrial and domestic wastewater of a brewery in Uzbekistan." E3S Web of Conferences 264 (2021): 01055. http://dx.doi.org/10.1051/e3sconf/202126401055.

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During the period of water shortage in the Republic, modern resource-saving irrigation methods and the use of purified and industrial waters and their reuse in irrigation is an urgent problem in ecology. Among the methods for treating industrial wastewater in a cheaper, cost effective way is the biological treatment method. It is the study of the effectiveness of biological treatment of industrial wastewater from primary winemaking using selected strains of aquatic plants (pistia). The object of wastewater research is selecting a Pistia algae strain, carrying out biochemical, hydrochemical analyses of wastewater before and after treatment, and the chemical composition of the Pistia algae biomass. All studies were carried out according to the standard studies of UzGOST for waste and drinking water and algological methods used by the Institute of Botany of ANRUz, State Enterprise "Institute GIDROINGEO", etc. The efficiency of biological purification of wastewaters of primary winemaking by higher aquatic plants of the pistia was established. With the help of the research carried out, the wastewater treatment of the food plant, in particular, the Kibray wine station with the Pistia algae, was established: the optimal parameters of growth, development and purification capacity of pistia algae were established for various variants of experiments and wastewater samples; designed and assembled a semi-industrial plant for biological wastewater treatment of the Kibray wine station and carried out work on industrial wastewater treatment. Wastewater from the Kibray wine station contains organic compounds, namely yeast sediments, proteins, fats, carbohydrates, fiber, which are food for Pistia algae. Pistia biomass obtained after cultivation in wastewater after sterilization can be used as feed in livestock and poultry farming, as it contains a large number of proteins, fats and carbohydrates.

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26

Oleszkiewicz, Jan A., Waclaw Trebacz, and Dave B. Thompson. "Biological treatment of kraft mill wastewater." Water Environment Research 64, no. 6 (September 1992): 805–10. http://dx.doi.org/10.2175/wer.64.6.8.

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27

Eckenfelder, W. Wesley, Victor J. Boero, and T. Houston Flippin. "Biological Treatment of High TDS Wastewater." Proceedings of the Water Environment Federation 2001, no. 3 (January 1, 2001): 66–73. http://dx.doi.org/10.2175/193864701785019353.

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28

Lemmer, Hilde, George Lind, Gerhard Metzner, Lutz Nitschke, and Margit Schade. "Vitamin addition in biological wastewater treatment." Water Science and Technology 37, no. 4-5 (February 1, 1998): 395–98. http://dx.doi.org/10.2166/wst.1998.0675.

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Vitamin supplementation is advertised in wastewater treatment to compensate for a deficiency of growth factors and thereby increase sludge activity and purification efficiency. Addition of vitamins of the B-complex was tested with activated sludge from 5 plants and compared to municipal sludge. Auxotrophy of bacteria isolates turned out to be compensated in most cases by vitamin producers in the activated sludge biocenoses.

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29

Nasr, Fayza A., and Hala M. El‐Kamah. "Chemico‐biological treatment of dairy wastewater." Environmental Management and Health 7, no. 3 (August 1996): 22–27. http://dx.doi.org/10.1108/09566169610117886.

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30

White, D. "Biological treatment of cyanide containing wastewater." Water Research 34, no. 7 (May 1, 2000): 2105–9. http://dx.doi.org/10.1016/s0043-1354(99)00362-0.

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31

Sroka, Ewa, Wladysław Kamiński, and Jolanta Bohdziewicz. "Biological treatment of meat industry wastewater." Desalination 162 (March 2004): 85–91. http://dx.doi.org/10.1016/s0011-9164(04)00030-x.

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32

BENZAOUI, A., and A. BOUABDALLAH. "Desalination and biological wastewater treatment process." Desalination 165 (August 15, 2004): 105–10. http://dx.doi.org/10.1016/s0011-9164(04)00217-6.

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33

Fazal, Saima, Beiping Zhang, and Qaisar Mehmood. "Biological treatment of combined industrial wastewater." Ecological Engineering 84 (November 2015): 551–58. http://dx.doi.org/10.1016/j.ecoleng.2015.09.014.

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34

Boopathy, Raj. "Biological treatment of shrimp production wastewater." Journal of Industrial Microbiology & Biotechnology 36, no. 7 (April 25, 2009): 989–92. http://dx.doi.org/10.1007/s10295-009-0577-0.

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35

Ng, W. J., Miranda G. S. Yap, and M. Sivadas. "Biological treatment of a pharmaceutical wastewater." Biological Wastes 29, no. 4 (January 1989): 299–311. http://dx.doi.org/10.1016/0269-7483(89)90021-9.

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36

Novikov, A. E., M. I. Filimonov, E. Dugin, and A. B. Golovanchikov. "Modeling a biological wastewater treatment system." IOP Conference Series: Earth and Environmental Science 577 (October 15, 2020): 012010. http://dx.doi.org/10.1088/1755-1315/577/1/012010.

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37

Benzaoui, A., and A. Bouabdallah. "Desalination and biological wastewater treatment process." Desalination 165 (August 2004): 105–10. http://dx.doi.org/10.1016/j.desal.2004.06.013.

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38

Kida, K., S. Morimura, N. Abe, and Y. Sonoda. "Biological treatment of Schochu distillery wastewater." Process Biochemistry 30, no. 2 (January 1995): 125–32. http://dx.doi.org/10.1016/0032-9592(95)80002-6.

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Kida, K. "Biological Treatment of Shochu Distillery Wastewater." Process Biochemistry 30, no. 2 (1995): 125–32. http://dx.doi.org/10.1016/0032-9592(95)95710-z.

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40

Stephenson, Dianne, and Tom Stephenson. "Bioaugmentation for enhancing biological wastewater treatment." Biotechnology Advances 10, no. 4 (January 1992): 549–59. http://dx.doi.org/10.1016/0734-9750(92)91452-k.

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41

Tangatova, Tuyana, Tatyana Bayanduyeva, Elvira Ernstovna, and Sergey Adamovich. "Intensification of biological wastewater treatment using ionic liquids." MATEC Web of Conferences 212 (2018): 01017. http://dx.doi.org/10.1051/matecconf/201821201017.

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In this article, biologically active tris-(2-hydroxyethyl) ammonium ionic liquids (IL) of the general formula [N(CH2CH2OH)3H]+ . –O(O)CCH2YAr (where Ar = aryl, Y = O, S, SO2) are studied as stimulators of biological wastewater treatment intensification (concentration is 10-4-10-8% mass). It was found that ionic liquids being introduced into the active sludge favorably influence the microorganisms of the activated sludge. When biostimulants are used, the biological wastewater treatment passes more intensively, and the indices of contaminantsm, such as ammonium ions and surfactants, decrease.

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42

Logan, B. E. "Simultaneous wastewater treatment and biological electricity generation." Water Science and Technology 52, no. 1-2 (July 1, 2005): 31–37. http://dx.doi.org/10.2166/wst.2005.0495.

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It is possible to directly generate electricity using bacteria while accomplishing wastewater treatment in processes based on microbial fuel cell technologies. When bacteria oxidize a substrate, they remove electrons. Current generation is made possible by keeping bacteria separated from oxygen, but allowing the bacteria growing on an anode to transfer electrons to the counter electrode (cathode) that is exposed to air. In this paper, several advances are discussed in this technology, and a calculation is made on the potential for electricity recovery. Assuming a town of 100,000 people generate 16.4 × 106 L of wastewater, a wastewater treatment plant has the potential to become a 2.3 MW power plant if all the energy is recovered as electricity. So far, power densities are low, resulting in power generation rates of ∼150 kW/m2. Progress is being made that we believe may result in as much as 0.5 MW from wastewater treatment. The generation of electricity during wastewater treatment may profoundly affect the approach to anaerobic treatment technologies used in wastewater treatment.

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Liu, Li, Huiwang Gao, Xin Zhao, Xiaohua Chen, and Sun Nan Hong. "Wastewater treatment: Enhanced biological treatment of storm flows." Filtration & Separation 47, no. 2 (March 2010): 23–27. http://dx.doi.org/10.1016/s0015-1882(10)70077-x.

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Andreottola, G., P. Foladori, and G. Ziglio. "Biological treatment of winery wastewater: an overview." Water Science and Technology 60, no. 5 (May 1, 2009): 1117–25. http://dx.doi.org/10.2166/wst.2009.551.

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The treatment of winery wastewater can realised using several biological processes based both on aerobic or anaerobic systems using suspended biomass or biofilms. Several systems are currently offered by technology providers and current research envisages the availability of new promising technologies for winery wastewater treatment. The present paper intends to present a brief state of the art of the existing status and advances in biological treatment of winery wastewater in the last decade, considering both lab, pilot and full-scale studies. Advantages, drawbacks, applied organic loads, removal efficiency and emerging aspects of the main biological treatments were considered and compared. Nevertheless in most treatments the COD removal efficiency was around 90–95% (remaining COD is due to the un-biodegradable soluble fraction), the applied organic loads are very different depending on the applied technology, varying for an order of magnitude. Applied organic loads are higher in biofilm systems than in suspended biomass while anaerobic biofilm processes have the smaller footprint but in general a higher level of complexity.

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Al-Jabri, Hareb, Probir Das, Shoyeb Khan, Mahmoud Thaher, and Mohammed AbdulQuadir. "Treatment of Wastewaters by Microalgae and the Potential Applications of the Produced Biomass—A Review." Water 13, no. 1 (December 25, 2020): 27. http://dx.doi.org/10.3390/w13010027.

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The treatment of different types of wastewater by physicochemical or biological (non-microalgal) methods could often be either inefficient or energy-intensive. Microalgae are ubiquitous microscopic organisms, which thrive in water bodies that contain the necessary nutrients. Wastewaters are typically contaminated with nitrogen, phosphorus, and other trace elements, which microalgae require for their cell growth. In addition, most of the microalgae are photosynthetic in nature, and these organisms do not require an organic source for their proliferation, although some strains could utilize organics both in the presence and absence of light. Therefore, microalgal bioremediation could be integrated with existing treatment methods or adopted as the single biological method for efficiently treating wastewater. This review paper summarized the mechanisms of pollutants removal by microalgae, microalgal bioremediation potential of different types of wastewaters, the potential application of wastewater-grown microalgal biomass, existing challenges, and the future direction of microalgal application in wastewater treatment.

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Dzhumagulova, Nazira, Ilya Svetkov, Vladimir Smetanin, and Nguyen Dinh Dap. "Fractal analysis of biological wastewater treatment efficiency." MATEC Web of Conferences 251 (2018): 06005. http://dx.doi.org/10.1051/matecconf/201825106005.

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The purpose of the present research was to enhance the efficiency of biological wastewater treatment through the direct impact on the metabolism of activated sludge. In the course of research, species and quantitative composition of biological community of activated sludge in aeration tanks during wastewater purification process was studied. Comparative analysis was carried out for linen production wastewater and household sewage. Possible application of biological treatment in linen production was evaluated. Proposals were developed on creation of controllable biological treatment facility. In this paper, biological methods are shown to be efficient for household sewage treatment. Comparative analysis was carried out for linen production wastewater and household sewage. Possible application of biological treatment in linen production was evaluated. Proposals were developed on creation of controllable biological treatment facility.

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Tay, Joo-Hwa. "Biological Treatment of Soya Bean Waste." Water Science and Technology 22, no. 9 (September 1, 1990): 141–47. http://dx.doi.org/10.2166/wst.1990.0076.

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Soya bean beverages and “Tofu” are the major sources of protein in the Asian diet. Wastewater from soya bean food processing plant consisted of high concentration of BOD5, COD, nitrogen and phosphorus. The wastewater should be pre-treated before discharging into the sewer or watercourses. Activated sludge process was an effective biological treatment process for soya bean wastewater. Up to 95% of BOD5 can be removed by activated sludge orocess. The removal of nitrogen and phosphorus were 67% and 57% respectively. The treatment efficiency increased with higher mean cell residence time. The settleability of activated sludge was good, and suspended solids removal efficiency was well above 90%. The biological kinetic coefficients were also determined from the pilot study.

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Burievich, Buriev Sulaymon, and Yuldoshov Laziz Tolibovich. "Biological Treatment of Wastewater from Production Enterprises." International Journal of Biology 12, no. 3 (May 5, 2020): 14. http://dx.doi.org/10.5539/ijb.v12n3p14.

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The article provides information on the growth, development, reproduction and degree of purification of wastewater from organo-mineral substances of the high water plant pistia (Pistia stratiotes L) oil refining plant wastewater.

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Guo, Wan Qian, Ren Li Yin, and Xian Jiao Zhou. "Current Trends for Biological Antibiotic Pharmaceutical Wastewater Treatment." Advanced Materials Research 726-731 (August 2013): 2140–45. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2140.

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The release of antibiotic pharmaceutical wastewater has caused a serious environmental problem. In order to provide a better guideline for the antibiotic wastewater treatment, this paper summarizes a critical review on the current biological technologies available for antibiotic wastewater degradation, including aerobic processes, anaerobic processes, anaerobic-aerobic processes, and other combined processes. Furthermore, applications of the antibiotic wastewater biological treatment processes are discussed as well.

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Vithalani, Priya, Ankita Murnal, Parthvi Akheja, Unnati Yagnik, and Nikhil Bhatt. "Review on Recent Technologies for Industrial Wastewater Treatment." International Journal for Research in Applied Science and Engineering Technology 10, no. 8 (August 31, 2022): 1752–57. http://dx.doi.org/10.22214/ijraset.2022.46495.

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Abstract: Textile industry plays key role in any country for its basic needs and urbanization. Due to high demand in textile area, it generates massive amount of toxic wastewater. Generated wastewaters possess impurities and toxicity because of textile dyes containing complex organic chromophore groups. Direct release of wastewater creates lots of environmental issues. Treatments of textile effluent is not easily carried out by physical, chemical and biological methods without any affect. Nanoparticle mediated degradation trending presently but it contains metallic harmful effect so, further study cannot be focused on nanoparticles. However, biological methods are more reliable and environmental friendly for treatment. Various aerobic and anaerobic techniques were developed for treatment of textile effluent. In pilot scale study, researchers had established different types of bioreactors and tried to apply it on large scale in industries. Still, that methods are not that much efficient at large scale. So, advancement of treatment must be carried out by investigator such as microbial fuel cell reactors and biological integration with different physical and chemical processes

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