Thaum kho cov dej phwj thiab sludge siv ib qho sludge dewatering tshuab, flocculant feem ntau yuav tsum tau ua tiav cov txiaj ntsig kev zoo. Thaum xaiv cov flocculant tsim nyog, xav txog plaub qhov tseem ceeb hauv qab no.
Sludge Cov Khoom
Rau sludge nrog cov ntsiab lus muaj zog organic, cationic flocculants muaj txiaj ntsig zoo dua. Qhov siab dua cov ntsiab lus organic, ua tau zoo dua cationic flocculant nrog qib siab dua ntawm polymerization. Rau sludge feem ntau tsim ntawm inorganic teeb meem, anionic flocculants tuaj yeem raug txiav txim siab. Sludge cov khoom ncaj qha cuam tshuam cov kev mob siab. Scum thiab ntau dhau mus ua hauj lwm sludge yog nyuaj rau Dewater, thaum sib xyaw sludge muaj kev ua haujlwm theem nrab kev ua tau zoo.
Feem ntau hais lus, qhov nyuaj tshaj plaws ntawm sludge rau dewater, ntau dua cov flocculant noj. Finer sludge hais ua rau nce flocculant noj. Cov ntsiab lus organic thiab alkalinity nyob rau hauv lub sludge kuj ua rau nce flocculant noj. Tsis tas li ntawd, cov ntsiab lus sludge cov ntsiab lus tseem cuam tshuam cov flocculant noj. Feem ntau, siab dua cov ntsiab lus sludge cov ntsiab lus, ntau dua cov flocculant kev yuav tsum tau thaum siv sludge dewatering tshuab.
Sludge ph
Sludge P txiav txim siab daim ntawv ntawm cov khoom siv hydrolysis, thiab tib cov flocculant yuav muaj kev cuam tshuam ntau yam kev cuam tshuam ntawm sludge nrog cov nqi sib txawv. Cov tshuaj tiv thaiv hydrolysis ntawm txhuas ntsev tau cuam tshuam ntau rau ntawm PH, nrog rau kev coj zoo tshaj rau lawv cov kev ua haujlwm hnyav ua 5-7. Ferric ntsev cov neeg sawv cev muaj tsawg dua cuam tshuam los ntawm PH, nrog rau kev ua kom zoo tshaj li ntawm 6-11. Cov ntsev ferrous, nrog lawv cov khoom lag luam hydrolysis ntau dua, tuaj yeem yog hydrogenated rau hauv cov suab nrov tsawg hauv cov pH ntawm 8-10.
Yog li ntawd, thaum xaiv cov ntsev inorganic hauv plab flocculant, cov phot tshwj xeeb ntawm cov sludge yuav tsum tau txiav txim siab ua ntej.
Flocculant contration
Lub siab flocculant concentration tsis tsuas yog cuam tshuam cov nyhuv txias, tab sis kuj cuam tshuam kev noj tshuaj thiab cov sludge dewatering tshuab ncuav mog qab zib tawm los. Organic Polymer Flocculant muaj kev cuam tshuam tseem ceeb dua. Feem ntau hais lus, qis dua cov organic polymer Flocculant concentration, qis dua cov khoom noj khoom haus thiab qhov zoo dua cov kev mob siab. Txawm li cas los xij, ntau dhau los siab dua yuav txo cov sludge ncuav mog qab zib tawm los, thaum lub sij hawm cov nyhuv ntawm inoracic polymulants yog cov tsis muaj kev cuam tshuam. Qhov zoo tshaj plaws concentration rau cov organic polymer flocculants yog 0.30% mus rau 0.1%, 10% rau 5% rau cov ntsev txhuas.
Sib xyaw Kev Kho Dej Kub
Lub sludge kub cuam tshuam rau cov hydrolysis ntawm cov flocculant los ntawm kev ua kom muaj kev sib txuas lus flocculation. Tsis tshua muaj kub kub lub hydrolysis txheej txheem. Yog tias qhov kub nyob hauv qab 10 degree, Flocculation cuam tshuam ntawm sludge dewatering tshuab yuav raug txo qis. Nyob rau hauv lub caij ntuj no, thaum kub yog tsawg, nws yog ib qho tseem ceeb uas yuav tau tswj cov sludge dewatering tshuab ntawm qhov tsawg kawg 15℃kom txo qis kub thaum lub sijhawm thauj mus los qis.