Zvirongwa zvemvura yekunwa zveveruzhinji zvinoshandisa nzira dzakasiyana dzekuchenesa mvura kupa nharaunda dzavo mvura yekunwa isina njodzi.Masisitimu emvura eruzhinji anowanzo shandisa matanho ekugadzirisa mvura, anosanganisira coagulation, flocculation, sedimentation, filtration uye disinfection.
4 Matanho eCommunity Water Treatment
1.Coagulation uye Flocculation
Mukubatana, makemikoro anochajiswa zvakanaka akadai sealuminium sulphate, polyaluminium chloride kana ferric sulphate anounzwa kumvura kuti abvise mhosva dzisina kunaka dzakabatwa nemarara, kusanganisira tsvina, ivhu, uye zvimedu zvakanyungudika.Mushure mekuita kuti mutero, zvimedu zvihombe zvishoma zvinonzi microflocs zvinoumbwa kubva pakusungirirwa kwezvimedu zvidiki nekemikari yakawedzerwa.
Mushure mekubatana, musanganiswa wakapfava unozivikanwa se flocculation unoitika, zvichiita kuti microflocs idhumhane uye ibatane pamwe chete kuti iumbe zvidimbu zvakamiswa zvinooneka.Zvimedu izvi, zvinonzi flocs, zvinoramba zvichiwedzera muhukuru nekuwedzera kusanganiswa uye kusvika pahukuru hwakanyanya uye simba, zvichizvigadzirira nhanho inotevera mukuita.
Danho rechipiri rinoitika kana chinhu chakamiswa uye utachiona hunogara pazasi pemudziyo.Iyo nguva yakareba iyo mvura inogara isina kukanganiswa, zvakanyanya kuomarara zvinokurirwa negiravhiti uye inowira pasi mugaba.Coagulation inoita kuti sedimentation ishande zvakanyanya nekuti inoita kuti zvidimbu zvikure uye zvireme, zvichiita kuti zvinyure nekukurumidza.Kuti pave nemvura yemunharaunda, hurongwa hwekuita sedimentation hunofanira kuitika nguva dzose uye mumadhishi makuru emvura.Ichi chakareruka, chine mutengo wakaderera application inhanho inodiwa pre-kurapwa pamberi pematanho ekusefa uye ekuuraya hutachiona.
3. Sefa
Panguva ino, floc particles dzakagara pasi pemvura uye mvura yakachena yakagadzirira kuwedzera kurapwa.Kusefa kunodiwa nekuda kwezvidiki, zvakanyungudutswa zvimedu zvichiripo mumvura yakachena, izvo zvinosanganisira guruva, zvipembenene, makemikari, mavhairasi, uye mabhakitiriya.
Mukusefa, mvura inopfuura nepakati pezvimedu zvemuviri zvinosiyana muhukuru uye maumbirwo.Zvinhu zvinowanzoshandiswa zvinosanganisira jecha, matombo, uye marasha.Slow sand filtration yakashandiswa kweanopfuura makore 150, ine rekodhi yakabudirira yekubvisa mabhakitiriya anokonzera gastrointestinal kusagadzikana.Slow jecha kusefa kunobatanidza biological, muviri, uye kemikari maitiro munhanho imwe.Ukuwo, kukurumidza kusefa jecha idanho rekucheneswa kwemuviri.Yakaoma uye yakaoma, inoshandiswa munyika dzakabudirira dzine zviwanikwa zvakakwana zvekurapa mvura yakawanda.Rapid jecha kusefa inzira inodhura-inodhura kana ichienzaniswa nedzimwe sarudzo, inoda mapombi anoshanda nesimba, kuchenesa nguva dzose, kuyerera kwemvura, basa rehunyanzvi, uye simba rinoramba riripo.
4. Disinfection
Nhanho yekupedzisira munharaunda yekuchenesa mvura inosanganisira kuwedzera mushonga wekuuraya utachiona senge chlorine kana chloramine kumvura.Chlorine yakashandiswa kubva mukupera kwema1800s.Mhando yeklorini inoshandiswa mukurapa kwemvura ndeye monochloramine.Izvi zvakasiyana nemhando iyo inogona kukuvadza mukati memhepo yemhando yakatenderedza madziva ekutuhwina.Mhedzisiro huru yekuita disinfection ndeye oxidize uye kubvisa organic zvinhu, izvo zvinodzivirira kupararira kwemaparasite, mavhairasi, uye mabhakitiriya anogona kuramba ari mumvura yekunwa.Kuuraya utachiona kunobatsirawo kuchengetedza mvura kubva kuutachiona hwainogona kuoneswa pairi panguva yekuparadzirwa sezvo ichiendeswa nepombi kudzimba, zvikoro, mabhizinesi nedzimwe nzvimbo.
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Nguva yekutumira: Jun-06-2022