Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Biosand"”.
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Safe household drinking water via BioSand filtration pilot project evaluation and feasibility of a BioSand pitcher filter
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2003.
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BioSand household water filter project in Nepal
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Iron oxide amended biosand filters for virus removal
… if the addition of iron oxides throughout biosand filter (BSF) media would increase virus removal due to adsorption. The proposed mechanism is electrostatic adsorption of negatively charged virion particles to positively charged iron oxides formed during the corrosion of zerovalent iron. …
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Use and performance of BioSand filters in Posoltega, Nicaragua
An evaluation of BioSand Filters, a method of Household Water Treatment, was conducted in Posoltega, Nicaragua, with objectives of determining the long-term filtration efficiency and the rate of sustained use. Field methods included microbial and turbidity water quality testing and interviews with …
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Educational Concerns of Implementing Biosand Water Filters in Rural Uganda
… POU technologies, and specifically the biosand filter (BSF) are shown to be affordable, effective, and sustainable in rural areas. Many studies point to the need of proper education and follow-up with BSF users. BSF technology has been used for the last 4 years in Nkokonjeru, Uganda by a …
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Modification of a biosand filter in the northern region of Ghana
… cfu/100 ml. Concurrently, 30 BSFs (HydrAidTM BioSand Water Filter) that were installed in a local village were tested for flow rate, turbidity, and E. coli/total coliform bacteria. These HydrAid BSFs showed an average turbidity removal of 87 %, and an average total coliform removal of 95 %, …
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Biosand filtration of high turbidity water : modified filter design and safe filtrate storage
… that was investigated in this research. Biosand filters, based on an intermittent slow sand filtration process, are an established household scale water treatment technology widely used in developing countries to treat low turbidity drinking water. This research investigates modifications …
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Effects of different water sources on MS2 and porcine rotavirus reduction in biosand filters
… especially for children under the age of five. Biosand filters (BSFs) are a promising technology implemented worldwide that can effectively reduce levels of bacteria and bacteriophages. However, the efficacy of enteric virus reduction in BSFs has not be studied. Furthermore, how the water …
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Household water use and treatment practices in rural Nepal : BioSand evaluation and considerations for future projects
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Household scale slow sand filtration in the Dominican Republic
… Republic to evaluate the performance of BioSand filters installed over the past two years. BioSand filter performance was evaluated based on flow rate, turbidity removal and total coliform removal in communities surrounding the cities of Mao, Puerto Plata and Dajabon. Filter owners were …
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Development of Water and Wastewater Biofiltration Technologies for the Developing World using Locally Available Packing Media: Case Studies in Vietnam and Haiti
… water treatment side, I focus on the use of biosand filters in Haiti with a specific interest in understanding their ability to remove the pathogen <italic>Vibrio cholerae</italic>, the causative agent for cholera. The wastewater treatment technology consists of biofilters packed with …
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Monitoring effective use of household water treatment and safe storage technologies in Ethiopia and Ghana
… cloth filters, the ceramic pot filter, the biosand filter, PUR and associated safe storage practices. During late 2007, key members of the WHO-hosted International Network to Promote Household Water Treatment and Safe Storage ("The Network") who are involved with M&E of HWTS systems were …
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Evaluation of the KanchanTM Arsenic Filter under various water quality conditions of the Nawalparasi District, Nepal
… of locally available iron nails into a BioSand Filter setup. Since 2002, the KAF filter has been successfully disseminated in approximately 24,000 Nepali households. However, recent studies have indicated that under certain raw water conditions, the KAF may inadequately reduce …
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Mechanism of virus removal and nutrient reduction and modification of bio-sand filter
The objectives of this study were to assess the role of nitrate and ammonia concentrations in the feed water on the removal of bacteriophage MS2 using bio-sand filters (BSFs) and analyze the formation of the bacterial community in BSFs, and modify BSFs with different packing materials and …