Hauv qab no yog cov lus qhia ntxaws ntxaws txog cov teebmeem thiab qhov sib txawv ntawm ob tus neeg sawv cev tom qab ntxiv rau hauv dej:
1. Tshuaj muaj pes tsawg leeg ntawm ob tus neeg sawv cev
1. Polyferric sulfate: Lub ntsiab tseem ceeb ntawm polyferric sulfate yog hlau ions, uas feem ntau muaj nyob rau hauv daim ntawv ntawm daj ntseg amorphous powdery solids.
2. Polyaluminium chloride: Cov khoom tseem ceeb ntawm polyaluminium chloride yog aluminium ions. Nyob ntawm cov txheej txheem tsim khoom, nws tuaj yeem tshwm sim ntau yam xim xws li xim av, beige lossis golden daj.
3. Polyferric sulfate: Polyferric sulfate muaj qis alkalinity (10%-13%), uas ua rau nws tsim cov flocs loj dua thaum kho dej thiab ua kom cov txheej txheem sedimentation. Tib lub sijhawm, polyferric sulfate muaj pH dav dav (4-11), uas txhais tau tias nws tuaj yeem ua haujlwm tau zoo nyob rau hauv ntau qhov dej zoo.
4. Polyaluminium chloride: Polyaluminium chloride muaj lub hauv paus siab, uas yuav cuam tshuam rau nws lub sijhawm flocculation thiab cov nyhuv hauv dej. Tsis tas li ntawd, qhov pH adaptability ntau ntawm polyaluminium chloride yog qhov nqaim (5-8), thiab nws yuav tsis zoo li polyferric sulfate nyob rau hauv qee yam dej tsis zoo.
2. Kev tshem tawm cov nyhuv ntawm ob tus neeg sawv cev hauv dej
1. Polyferric sulfate: Polyferric sulfate muaj zog coagulation kev ua tau zoo, tshwj xeeb tshaj yog nyob rau hauv turbidity tshem tawm, decolorization, roj tshem tawm, lub cev qhuav dej, sterilization, thiab COD thiab BOD tshem tawm. Nws tus nqi tshem tawm COD tuaj yeem ncav cuag ntau dua 90%, thiab BOD tshem tawm tus nqi tuaj yeem ncav cuag ntau dua 93%. Nyob rau tib lub sijhawm, daim ntawv thov cov nyhuv ntawm polyferric sulfate ntawm qhov kub thiab txias yog qhov zoo dua li ntawm polyaluminium chloride, thiab yuav tsis muaj cov hlau ions seem, uas tsis tshua muaj kev cuam tshuam rau ib puag ncig.
2. Polyaluminium chloride: Polyaluminium chloride muaj qhov zoo coagulation thiab sedimentation kev kho mob rau cov dej turbidity siab, tab sis nyob rau hauv tej yam kev mob, xws li tsis tshua muaj kub thiab tsis muaj turbidity dej, nws cov nyhuv kho tej zaum yuav tsis zoo li polyferric sulfate. Tsis tas li ntawd, polyaluminium chloride kuj qhia tau hais tias muaj qee yam cuam tshuam rau kev tshem tawm phosphorus los ntawm cov dej hauv lub cev.
3. Polyferric sulfate: Polyferric sulfate zoo dua li polyaluminium chloride tshem tawm COD, BOD thiab chromaticity, thiab tuaj yeem ntxuav cov dej kom zoo dua. Nyob rau tib lub sijhawm, polyferric sulfate ua tau zoo dua hauv kev tshem tawm phosphorus los ntawm cov dej hauv dej.
4. Polyaluminium chloride: Txawm hais tias polyaluminium chloride tsim cov flocs loj, nws cov turbidity tshem tawm cov nyhuv yuav tsis zoo li polyferric sulfate nyob rau hauv qis kub.
3. PH adaptability ntau ntawm ob tus neeg sawv cev
1. Polyferric sulfate: Polyferric sulfate yog qhov tsim nyog rau qhov dav pH ntau, uas tso cai rau nws tswj cov coagulation kev ua tau zoo nyob rau hauv ntau yam dej zoo.
2. Polyaluminium chloride: Cov pH feem ntau ntawm polyaluminium chloride yog qhov nqaim, yog li nws yuav tsis ua tiav cov txiaj ntsig zoo tshaj plaws hauv dej zoo ntawm qee qhov pH qhov tseem ceeb.
4. Tus neeg saib xyuas tus nqi thiab kev kho mob
1. Polyferric sulfate: Tus nqi kho mob ntawm polyferric sulfate yog qhov tsawg, vim tias nws qhov ntau npaum li cas feem ntau yog 50% ntawm polyaluminium chloride, uas txhais tau tias tus nqi kho mob tuaj yeem txuag tau 20% mus rau 50%. Nyob rau tib lub sijhawm, cov sludge tsim tom qab kev kho mob polyferric sulfate yog ntau compact thiab tsawg nyob rau hauv kom muaj nuj nqis, uas yog tsim nyog los txo tus nqi tom qab sludge kho.
2. Polyaluminium chloride: Txawm hais tias polyaluminium chloride tuaj yeem ua tiav cov txiaj ntsig kev kho mob zoo hauv qee kis, nws cov nqi thiab kev kho mob yuav ua rau me ntsis qis dua rau polyferric sulfate. Txawm hais tias polyaluminium chloride tej zaum yuav raug nqi zoo nyob rau hauv qee kis, nws yuav tsis zoo li polyferric sulfate feem ntau.
5. Kev cuam tshuam ntawm cov neeg ua haujlwm rau ib puag ncig
1. Polyferric sulfate: Polyferric sulfate muaj kev ruaj ntseg zoo dua ntawm qhov kub qis dua polyaluminium chloride, thiab yuav tsis hnov mob nrog cov hlau ions seem, uas tuaj yeem tshem tawm cov khib nyiab pov tseg ntau dua thiab muaj peev xwm cuam tshuam rau ib puag ncig.
2. Polyaluminium chloride: Cov dej kho nrog polyaluminium chloride tuaj yeem muaj cov khoom tsis zoo xws li txhuas, chlorine thiab cov hlau hnyav ions, thiab kev kho tsis zoo yuav ua rau cov khoom zoo trivalent hlau ions hauv cov khoom raug txo kom zoo divalent hlau ions, ua rau theem nrab. ua paug.
Hauv cov ntsiab lus, muaj qhov sib txawv pom tseeb ntawm polyferric sulfate thiab polyaluminium chloride nyob rau hauv cov ntsiab lus ntawm cov tshuaj muaj pes tsawg leeg, tshem tawm cov nyhuv, pH adaptation ntau yam, tus nqi thiab kev kho mob nyhuv. Thaum xaiv cov flocculant siv, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo xav txog yam xws li cov dej tsis zoo, cov hom phiaj kev kho mob thiab kev siv nyiaj txiag. Los ntawm cov kev xav ntawm lub cev thiab tshuaj lom neeg cov yam ntxwv, tshem tawm cov nyhuv, nqi-zoo thiab ib puag ncig kev cuam tshuam, polyferric sulfate feem ntau qhia tau hais tias zoo dua hauv kev siv cov nroj tsuag dej. Txawm li cas los xij, kev xaiv tshwj xeeb ntawm flocculant yuav tsum tau txiav txim siab raws li qhov xav tau kev kho dej tiag tiag, cov peev nyiaj siv nyiaj thiab cov xwm txheej tshwj xeeb ntawm kev kho mob. Thaum xaiv, nws raug nquahu kom xav txog ntau yam ua tiav thiab txiav txim siab raws li kev coj ua ntawm cov kws tshaj lij lossis cov tuam txhab tsim khoom.
