Paunenge uchifunga yakokurapwa kwemvura yakasvibaprocess, tanga nekuona kuti chii chaunoda kubvisa kubva mumvura kuitira kuti usangane nekuburitsa zvinodiwa. Nekurapa kwakakodzera kwemakemikari, unogona kubvisa ions uye zvinyoro zvidiki zvakanyungudutswa kubva mumvura, pamwe chete neyakamiswa yakasimba. Makemikari anoshandiswa mumiti yekuchenesa tsvina anonyanya kusanganisira: pH regulator, coagulant,flocculant.
Flocculant
Flocculants inoshandiswa mumhando dzakasiyana-siyana dzemaindasitiri uye mashandisirwo ekubatsira kubvisa zvakamiswa zvakaomeswa kubva mumvura yakasviba nekuisa zvinosvibisa mumashizha kana "flocs" inoyangarara pamusoro kana kugara pasi. Zvinogona zvakare kushandiswa kupfavisa lime, kuisa pfungwa pamatope uye dehydrate solids. Natural kana mineral flocculants inosanganisira inoshanda silica uye polysaccharides, nepo synthetic flocculants inowanzo.polyacrylamide.
Zvichienderana nechaji uye kuumbwa kwemakemikari emvura yakasviba, flocculants inogona kushandiswa yoga kana kusanganiswa ne coagulants.Flocculants akasiyana kubva coagulantspakuti kazhinji mapolymers, nepo coagulants kazhinji munyu. Saizi yavo yemamorekuru (huremu) uye density yechaji (yeroji yemamorekuru ane anionic kana cationic charges) inogona kusiyanisa ku "kuenzanisa" kubhadharisa kwezvimedu zviri mumvura uye kuita kuti zviungane pamwe chete uye kupera mvura. Kazhinji, anionic flocculants inoshandiswa kuteya mamineral particles, nepo cationic flocculants inoshandiswa kuteya organic particles.
PH regulator
Kubvisa simbi uye zvimwe zvakanyungudutswa zvakasvibiswa kubva mumvura yakasviba, pH regulator inogona kushandiswa. Nekusimudza pH yemvura, uye nekudaro kuwedzera huwandu hweiyo negative hydroxide ions, izvi zvinokonzeresa kuti maion esimbi anochajiswa zvakanaka kuti abatane neaya anochajiswa zvakashata maion hydroxide. Izvi zvinoguma nekusefa kwesimbi dzakakora uye dzisinganyunguriki.
Coagulant
Kune chero nzira yekuchenesa mvura yetsvina inobata zvinhu zvakamiswa, macoagulants anogona kubatanidza zvakamiswa zvinosvibisa kuti zvibviswe nyore. Makemikari coagulants anoshandiswa pakugadzirisa mvura yetsvina yemaindasitiri akakamurwa kuita chimwe chezvikamu zviviri: organic uye inorganic.
Inorganic coagulants inodhura-inoshanda uye inogona kushandiswa kune yakakura huwandu hwekushandisa. Iwo anonyanya kushanda pakurwisa mvura yakasvibirira chero yakaderera turbidity, uye iyi application haina kukodzera organic coagulants. Kana yawedzerwa kumvura, inorganic coagulants kubva mualuminium kana iron precipitate, inotora tsvina mumvura nekuichenesa. Izvi zvinozivikanwa se "kutsvaira-uye-flocculate" maitiro. Kunyange zvazvo inoshanda, iyo nzira inowedzera huwandu hwese hwemadhaka inoda kubviswa kubva mumvura. Yakajairika inorganic coagulants inosanganisira aluminium sulfate, aluminium chloride, uye ferric sulfate.
Organic coagulants ine mabhenefiti eiyo yakaderera dosage, diki kugadzirwa kwedhaka uye hapana mhedzisiro pane pH yemvura yakarapwa. Mienzaniso yezvakajairwa organic coagulants inosanganisira polyamines uye polydimethyl diallyl ammonium chloride, pamwe nemelamine, formaldehyde uye tannins.
mutsara wedu we flocculants uye coagulants wakagadzirirwa kuvandudza kurapwa kwemvura yakasviba uye kuderedza mutengo wakazara wezvakasiyana-siyana zvekugadzirisa zvicherwa zvekugadzirisa zvicherwa, kusangana nezvinodiwa zvemishonga yekuchenesa mvura mune zvakasiyana-siyana zvekushandisa.
Nguva yekutumira: Feb-15-2023