Ethiopian Institute of Architecture, Building Construction and City Development

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Browsing Ethiopian Institute of Architecture, Building Construction and City Development by Author "Abebe, Desssalegn"

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    Optimizing The Process Conditions of Solar Water Disinfection for The Rural-Area (Case study in Benishangul- Gumuz Region, Guba Woreda, Ethiopia
    (Addis Ababauniversity, 2011-07) Abebe, Desssalegn; Kaba, Tassisa (PhD)
    In this paper one alternative house hold based solar water treatment ( ) technology is dealt with taking Guba Woreda as study area. It is intended in finding local solutions for constraint that are found to affect the sustainability of the process. Water sources that are in consumption by the community were characterized for their turbidity and microbial quality during the time the study was conducted, ending with turbidity of <50NTU for most water sources and 2-95 FCU microbial load. In the study in general, it has been tried to contextualize the technology for the area. The different factors affecting the technology have been investigated in combination giving rise to an optimum factorial combination of 2L container size with turbidity of <90NTU requiring 4:45 exposure time yielding a response of zero faecal coli form unit. The simple pretreatment unit designed is with the material found in the hands of the society, including the coagulant-flocculants (i.e. Moringa, a miracle tree). This has resulted in turbidity removal of 70-95%. Finally a simple batch mode operating system has been developed that may simplify the work load of using bottles separately. Therefore these all operations being in the hand and skill of the community, it can be inferred that the technology can be applied in the study area with minimum cost in a sustainable manner. Key words: Rural community, unsafe water sources, Moringa, Water treatment, SDWT, clean water