Coagulants, feem ntau hu ua flocculants, yog qhov tseem ceeb nyob rau hauv cov txheej txheem pov tseg. Lawv tau siv los txhim kho cov kua-kua sib cais, txhim kho kev ua tau zoo ntawm thawj lub sedimentation, flotation, thiab theem nrab shouentation raws li cov txheej txheem sludge acudated. Tsis tas li ntawd, Ceeagulants yog siv dav hauv kev siv tshuaj Tertiary lossis Advanced Wastewater kom huv si rau cov dej.
Dab tsi yog coavulants?
COAGULANANTS yog tshuaj lom neeg tsim qauv los tshem tawm cov khib nyiab, colloids, thiab lwm yam kuab paug los ntawm dej. Lawv txoj haujlwm tseem ceeb yog:
- Nruab nruab cov nqi hluav taws xob ntawm cov me me
- Txhawb Adsorption Bridging
- Hlob cov txheej txheej ob chav ntawm hais
Cov txheej txheem no ua rau kev sib sau ua ke me me rau hauv cov flocs loj dua, uas yog tom qab ntawd tau muab tshem tawm yooj yim los ntawm sedimentation, flotation, lossis kev lim dej.
Qhov sib cais cov txheej txheem hauv kev kho dej
Feem ntau, kev kho mob sib cais yog ua ua ntej cov txheej txheem sib cais thiab ua haujlwm sib cais ua kom zoo tshem cov khib nyiab thiab colloidal tshuaj los ntawm cov dej nyoos. Qhov luaj li cas ntawm cov khoom no yog li 1nm mus rau 100μm. Coagulation txo qhov turbidity thiab codcr ntawm effluent thiab tuaj yeem siv nyob rau hauv:
- Cov txheej txheem pretricate
- kev kho siab heev
- Residual Sludge Kev Kho Mob
Tsis tas li ntawd, kev sib cais pab tshem tawm:
- Cov kab mob microorganism
- Pathogens
- Emulsified roj
- Xim
- Cov Hlau Hnyav
- Lwm cov kuab paug
Kev sib cais cov txheej txheem
Coagulation kuj tseem muaj txiaj ntsig zoo thiab muaj txiaj ntsig zoo rau phosphorus tshem tawm, ua tiav qhov kev tshem tawm ntawm {1}}%.
Hom co co keulus
1. Inorganic Coululants
Tsawg molecular hnyav inorganic co coagulants muaj txhuas chloride, txhuas sulfate, ferric sulfate, thiab ferric chloride. Cov feem sib txawv no muaj kev sib sau ua ke qeeb, ua kom muaj kev sib tw me me, ua rau cov kev twv kom muaj cov txheej txheem dej kho. Raws li qhov tshwm sim, lawv tau maj mam hloov los ntawm inorganic polymer co co keulants.
Inorganic polymer co coagants yog cov hom dej tshiab tsim los ntawm cov kua txhuas thiab cov ntsev hlau. Lawv raug nqi-ua tau zoo thiab muab cov dej ua kom muaj txiaj ntsig zoo.
Polymeric aluminum chloride (PAC) is a highly effective coagulant with good coagulation performance, forming large flocs, requiring lower dosages, and providing high efficiency and fast settling. Nws yog tsim nyog rau ntau yam dej zoo thiab feem ntau siv rau kev ua kom huv cov dej haus cawv thiab dej muaj. Nws kuj tseem tuaj yeem tshem tawm cov hlau hnyav xws li hlau, manganese, chromium, thiab roj, ua rau nws cov khoom siv ua haujlwm ntau yam.
2. Organic co coavulants
Ntuj polymer polymer: cov no suav nrog cov hmoov txhuv nplej siab thiab Chitosan. Cov ntaub ntawv no tau muab los ntawm cov khoom ntuj thiab ib puag ncig phooj ywg, feem ntau ua haujlwm los ntawm kev tshaj tawm thiab bridging.
Hluavtaws polymer coagulants: Piv txwv li polyacrylamide (PAM), uas txhim kho Foc tsim los ntawm kev kos duab lossis them nruab nrab. Nws yog qhov haum rau kev kho kom zoo ntawm kev kho kom zoo nkauj.
Cov khoom lag luam tau:
3. Composite Coagulants
Composite Coalulants ua ke inorganic thiab organic co coagants, leverging lawv cov kev ua tau zoo los txhim kho kev ua kom haum rau kev siv tshuaj lom neeg.
Kev xaiv thiab kev thov ntawm cov coagulants nyob ntawm yam xws li hom dej khib nyiab, cov ntawv thov kev tsim tawm hauv kev kho dej
Coagulants yog siv dav hauv:
1. Cov dej haus: txhawm rau tshem tawm cov dej noo, cov khib nyiab tshem tawm, cov khib nyiab tshem tawm, thiab algae ua ntej sedimentation lossis pom.
2. Kev Kho Mob Hauv Nroog thiab Kev Kho Mob Khib Nyiab: Txog kev tshem tawm cov khib nyiab thiab kev kho mob colloidal ntawm thawj cov thawj coj thiab qee zaum kev kho mob theem nrab.
3. Kev kho kom muaj dej khib nyiab pov tseg: siv ntau yam li hauv ntawv tsim khoom, zas xim, thiab khoom noj kom tshem tawm cov teeb meem organic, xim, thiab hlau hnyav.
Tag
Los xaiv cov qauv sib xyaw kom tsim nyog thiab cov qauv siv phom, cov dej kho cov dej yuav muaj peev xwm txhim kho kev ua haujlwm zoo thiab dej ua tau zoo. Coagulants yog ib qho tseem ceeb ntawm cov dej niaj hnub thiab dej khib nyiab, muab cov kev daws teeb meem zoo rau ntau yam kev sib tw uas muaj kuab paug.
Cov Ntsiab Lus: coagulants, flocculants, inorganic, kev kho dej huv, kev kho kom huv, phosphorus tshem tawm