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 9 of 9 for “"biosand filter"”.
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Modification of a biosand filter in the northern region of Ghana
… layer, one with an additional 10-cm sand layer. Filter ripening was confirmed through an increase in turbidity removal after 13 days. All four LPD BSFs removed turbidity by an average of 92-95 % after Day 13, with average effluents of 10 - 16 TU (14 - 22 NTU). The modified BSFs showed slightly …
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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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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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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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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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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
… Aquatabs, solar disinfection (SODIS), 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 …
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Evaluation of the KanchanTM Arsenic Filter under various water quality conditions of the Nawalparasi District, Nepal
… to develop and disseminate the KanchanTM Arsenic Filter (KAF) for the low-cost removal of arsenic from drinking water in rural Nepal. In this system, arsenic is removed via absorption onto the surface of ferric hydroxide, or rust, through the integration of locally available iron nails into a …
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Mechanism of virus removal and nutrient reduction and modification of bio-sand filter
… 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 structures. Five bench-scale BSFs were constructed from 4 inches PVC. Two BSFs were fed with high and low nitrate …