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Rozprawy doktorskie na temat „Water purification research”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 21 lutego 2023

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Sprawdź 18 najlepszych rozpraw doktorskich naukowych na temat „Water purification research”.

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1

McGinley, Susan. "Borrowing from Mother Nature: Water Purification and Reuse in Tucson." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/622314.

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Heiner, George Benjamin. "Chlordane contamination in the Chattahoochee River : assessment of existing data and outline for future research." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/20730.

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Yang, Linda, and Robert Liao. "Water Purification : Research on the Energy Supply of Air Gap Membrane Distillation for Access to Clean Water." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-282905.

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Water stress is an ongoing problem in many places in the world, while the demand for clean and safe freshwater is growing due to the increasing population. In many developing countries, water supplies often are contaminated with arsenic, fluoride, etc. Therefore, it is important to realize that water scarcity and contamination issues concern only one sector but many. HVR Water Purification AB is developing a water purification prototype – ELIXIR 500 - using the air gap membrane technology and is implemented in Odisha, India, aiming to supply with 200 litre water daily. This thesis aims to esti

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Okalebo, Susan, University of Western Sydney, of Science Technology and Environment College, and School of Engineering and Industrial Design. "Development and trial of a low-cost aerobic greywater treatment system." THESIS_CSTE_EID_Okalebo_S.xml, 2004. http://handle.uws.edu.au:8081/1959.7/814.

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This study was undertaken to examine the feasibilty of a low-cost aerobic system to treat greywater for reuse.Its purpose was to provide a system that would be easy to maintain, flexible and be affordable for households and small communities in developing countries. This thesis outlines and evaluates the key biological and chemical hazards associated with greywater reuse. It discusses the performance of a variety of wastewater treatment options in use. It presents details of the components of the greywater system,namely, an aerobic grease trap and slow sand filter. Reference is made to the eva

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Shriner, Katherine Ann. "Strategies for reducing the mutagen content of chlorinated aqueous media." Thesis, Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/50093.

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In anticipation of government mandates regulating the quantity of the toxic mutagen, 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone, which can be released into potable waters or from industrial facilities, technologies for monitoring the concentration, reducing the quantity, and inhibiting the formation of this compound were investigated. Adsorption of the chlorinated hydroxyfuranone from laboratory systems (pH 7.2, 22°) utilizing the non-polar, polymeric resin, Amberlite XAD-4, was successful. As these system conditions are comparable to those present in drinking water treatment facilit

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Ranmuthugala, Geethanjali Piyawadani. "Disinfection by-products in drinking water and genotoxic changes in urinary bladder epithelial cells." View thesis entry in Australian Digital Theses Program, 2001. http://thesis.anu.edu.au/public/adt-ANU20011207.110344/index.html.

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Okalebo, Susan. "Development and trial of a low-cost aerobic greywater treatment system." Thesis, View thesis, 2004. http://handle.uws.edu.au:8081/1959.7/814.

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This study was undertaken to examine the feasibilty of a low-cost aerobic system to treat greywater for reuse.Its purpose was to provide a system that would be easy to maintain, flexible and be affordable for households and small communities in developing countries. This thesis outlines and evaluates the key biological and chemical hazards associated with greywater reuse. It discusses the performance of a variety of wastewater treatment options in use. It presents details of the components of the greywater system,namely, an aerobic grease trap and slow sand filter. Reference is made to the eva

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Manipura, Walappuly Mudiyanselage Janakasiri Aruna Shantha Bandara. "Bioprocess development for removal of nitrogenous compounds from precious metal refinery wastewater." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1007341.

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Removal of nitrogenous compounds from precious metal refinery (PMR) wastewater is important in terms of avoiding eutrophication (environmental protection), metal recovery (increased overall process efficiency and value recovery) and reuse of treated water (maximum use of natural resources). Extreme pH conditions (4 to 13 depending on the wastewater stream), high chemical oxygen demand (> 10,000 mg/I), numerous metals and high concentrations of those metals (> 20 mg/l of platinum group metals) in the wastewater are the main challenges for biological removal of nitrogenous compounds from PMR was

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Shih, Po-Kang, and 石栢岡. "Research of Water Purification on Oyster Shell Contact Bed." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/33941993514686700197.

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博士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>104<br>The purpose of this study is to utilize wasted oyster shells as the media of the contact bed to purify domestic wastewater on Erchong Floodway, Taipei County. There are three horizontal flow tanks in this system, horizontal flow and aerated oyster shell tank (HAOS), horizontal flow oyster shell tank (HOS), and horizontal flow gravel tank (HG), respectively. In the experiment site, use NaCl as the tracer to perform pulse tracer tests to discuss residence time distribution of the oyster shell constructed wetland and dispersion effects of solute transport by

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LIN, YU-CHENG, and 林昱成. "The Research on the Change of Design Thinking in Prototyping - A Conceptual Design of Water Purification Device." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3kszur.

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碩士<br>國立雲林科技大學<br>工業設計系<br>106<br>In the product design process, industrial designers usually visualize the creating concept through using Prototype. Prototyping is the initial process of product development, the important device to context, which plays an important role not only in the conceptual stage but also in the whole design process. Prototype makes designers understand the existing user experience and collection, exploring, evaluating ideas and expressing to the public, which is helpful for the purpose of learning, analyzing, modifying, testing and reviewing. Demonstrability of Prototy

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Tsai, Zen-yau, and 蔡振耀. "Research of River Water Purification in a two-stage Constructed Wetland- with Puzi River JieShouCiao Constructed Wetland as a Case Study." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/72573337832369228609.

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碩士<br>國立雲林科技大學<br>環境與安全工程系碩士班<br>95<br>A wetland was constructed on the Puzi river flood plains in this research. Several aquatic plants were grown on this wetland. By the interaction among plants, soil, and microorganisms, which is the natural autonomous purification measure, a certain section of Puzi River in Chiayi County was purified to improve the water quality and the utility. The sewage treatment by using constructed wetlands has been widely used in both international and domestic area and has concrete effects. It，s advantage is low capital investment cost, easy to operation and mainten

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Makoni, Robert Davison. "Teaching chemistry of water purification in grade 11 using locally available materials through the scientific inquiry approach." Diss., 2014. http://hdl.handle.net/10500/19033.

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This dissertation surveyed the validities of teaching the chemistry of water purification in South African schools using locally available materials (LAM) through the scientific inquiry (SI) approach. The researcher randomly selected four secondary schools that provided a small and purposive study sample of thirty-two Grade 11 learners and four teachers. The research design applied a mixed-method approach, consisting of qualitative and quantitative methods of data collection. Within this approach, the outcome of SI instruction that integrated LAM was compared with that of conventional in

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De, Silva Karunanayaka Shanaka. "Studies of magnetic filtration techniques to purify potable water and waste water : a project report submitted in partial fulfilment of the requirement for the degree of Master of Engineering (M.E.) in Information and Telecommunications Engineering, Institute of Information Sciences and Technology, Massey University, Palmerston North, New Zealand." 2007. http://hdl.handle.net/10179/770.

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The effects of Electromagnetism on potable water and waste water has been proven in practice but not scientifically proven to the extent that it is accepted by Engineers and Engineering Consultants. The operating principle of magnetic filtration or separation is based on the interaction of electromagnetic fields with the materials under test. Technical water system (TWS) system configuration has been analysed to determine the system characteristics. Three field trials and some laboratory experiments have been reported in this report. Finite element software has been used for the analysis of ma

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Lai, Jung-Yi, and 賴榮一. "The Investigation and Research of Plants Transition and Water Purification of Jhudong Highland on Hsinchu Touchien Riverside in The 1st and 2nd Stages of The Constructed Wetlands Projects." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/74106538222682284806.

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碩士<br>中原大學<br>建築研究所<br>97<br>Abstract At Tou-chian River of Hsin-chu county, the area of 1st and 2nd stages of constructed wetland is 1.9 hectare. It includes 16 different pounds from A to P. During the period of research, Sep. of 2007 to Aug. of 2008, the plants spatial heterogeneity had reach the highest percentage of 39% in Jan.2008, and the lowest of 22% in Aug. 2008. The percentage under maintenance control was between 20 to 40%. Plant species proportion in maintenance plots appears a well mix status, the species in the vegetation succession environment plots are mainly Bidens pilosa

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Somdee, Theerasak. "Biodegradation of cyanobacterial hepatotoxins [Dha[to the power of 7]]MC-LR and MC-LR by natural aquatic bacteria : a thesis submitted for fulfillment of the requirements for the degree of Doctor of Philosophy in Microbiology, Institute of Food, Nutrition and Human Health, College of Sciences, Massey University at Wellington, New Zealand." 2010. http://hdl.handle.net/10179/1367.

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The aims of this doctoral study were to: isolate naturally occurring bacteria, able to degrade microcystins (MCs), from New Zealand waterbodies; to understand the biological processes of microcystin degradation by bacteria; and to develop small scale biofilm technology for testing the effectiveness of bacteria for microcystin degradation and/or remediation. A significant amount of microcystins were required for biodegradation experiments. A modified method, using DEAE and Strata-X cartridge chromatography, was optimized for purifying microcystin variants from lyophilized bloom samples of the c

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Mbulawa, Xolani Proffessor. "Development and evaluation of silicone membrane as aerators for membrane bioreactors." Thesis, 2005. http://hdl.handle.net/10321/314.

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Thesis (M.Tech.: Chemical Engineering)-Dept. of Chemical Engineering, Durban University of Technology, 2005 1 v. (various pagings)<br>In bubble-less aeration oxygen diffuses through the membrane in a molecular form and dissolves in the liquid. Oxygen is fed through the lumen side of silicone rubber tube. On the outer surface of the membrane there is a boundary layer that is created by oxygen. This then gets transported to the bulk liquid by convective transport created by water circulation through the pump. The driving force of the convective transport is due to concentration difference betwee

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Puttyfoot, Bronwyn Louise Yvonne. "The impact of wastewater irrigation on soils in the ACT." Master's thesis, 2011. http://hdl.handle.net/1885/155807.

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Degrading catchments and water shortages are the most immediate and arguably the biggest environmental issues affecting the world today. In recent years, wastewater irrigation has gained popular support as a substitute to irrigation of potable water. The use of wastewater for irrigation is considered beneficial recycling of a limited resource; in this case freshwater within Australia. Although it has economic, environmental and social benefits, it is sometimes questioned as an environmentally sound method, because wastewater irrigation has been shown to change the chemical, physical and biolog

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Chen, Hsin-hung, and 陳信宏. "Research on Performance of Wastewater Purification Unit and Recycling of Wastewater and sludge Dewatering of In-Site in Feng Shan Wate Treatment Plant." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/2uv9cn.

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碩士<br>國立中山大學<br>環境工程研究所<br>96<br>During the water treatment process, each processing unit releases the sludge from the sedimentation process, and the wastewater from the rapid sand wash and filtration process, to the wastewater pond followed by the wastewater sedimentation pond. The sediment sludge is allowed to enter the sludge thickening pond while the supernatant is recycled for further treatment. The sludge is released to the sludge pond where it is treated with certain chemicals and squeezed to form the sludge cake. The sludge cake is removed and transported by a legitimate cleaning serv

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