EFFECTIVENESS OF SLOWS AND FILTER AS A SIMPLE TECHNOLOGY IN TREATING WATER
Abstract
SlowSandFilterthisstudybasicallyfocusesontheeffectivenessofslowsandfilterasasimpletechnologytotreatwaterbyhouseholdstomakeitportable.Incourseofthestudy,onemodelsofSSFwereconstructedusingthesamematerialsinwhichsamegranularmaterialswithdifferentgrainsizeswereused.SSFhasgrainsizesof19.5mm,1.18mmand14mmarrangedfrombottomtotopandSSFhassizes14mmand2mmand1.18mmrespectively.Onesurfacewatersampleswerecollectedatlocation(bayangidansarki)(njiwaji)wherehumanactivitiesisatitspeak.Thewatersampleswereputunderanalysisofphysicalparameterandcoliformbacteriainwhichresultrevealedhighcontaminationofsample.Thesampleswereputunderpre-chlorinationtreatment.Usingalumafterwhichboilingofsamplesfollowed,thiswastoreducethelevelofcontamination.ThesamplesweretensuccessfullyfilteredwingbothSSFinwhichresultrevealedthatbothsamplesweretreatedtoappreciablestandardconsideringthecontaminationlevel,however,watersampleundertreatmentofSSFyieldedbetterresultsampleSSF,withcoliformbacterialevelsrespectively.Hencethesmallertheeffectivegrainsize,thebettertheresultsobtainedSSFin-indeedisamosthaveinhouseholdssoastoreducewatercontaminationwhichleadstovariouswaterbornediseases.
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