Thaum Xav Txog KojKev kho dej khib nyiabTxheej txheem, Pib los ntawm kev txiav txim siab yam koj yuav tsum tau tshem tawm ntawm cov dej thiaj li ua tau raws li qhov yuav tsum tau muaj pov tseg.Nrog rau kev kho tshuaj kom raug, koj tuaj yeem tshem tawm cov ions thiab cov khoom me me ntawm cov dej, zoo li cov khoom raug tshem tawm.Cov tshuaj siv nyob rau hauv cov dej phwj kho cov nroj tsuag feem ntau suav nrog:Flocculant, Ph Regulator, Coagulant.
Flocculant
Flocculants yog siv nyob rau hauv ntau yam kev lag luam thiab kev sivTxhawm rau pab tshem tawm cov khoom raug tshem tawm ntawm cov dej khib nyiab los ntawm kev tsom cov pa phem rau hauv cov ntawv lossis "Flocs" uas ntab saum npoo los yog nyob rau hauv qab.Lawv kuj tuaj yeem siv los ua kom cov txiv qaub, ua kom cov sludge thiab dehydrate cov khoom.Ntuj lossis Mineral Flocculants suav nrog Active Silica Thiab Polysaccharides, Thaum Synthetic Flocculants feem ntau yog Polyacrylamide.
Nyob ntawm tus nqi thiab tshuaj muaj pes tsawg leeg ntawm cov dej khib nyiab, Flocculants tuaj yeem siv ib leeg lossis hauv kev sib xyaw nrog coagulants.Flocculants txawv ntawm coagulants nyob rau hauv uas lawv feem ntau yog Polymers, whereas Coagulants feem ntau yog ntsev.Lawv Molecular Loj (hnyav) Thiab Them Qhov Ncauj (feem pua ntawm cov khoom siv nrog anionic lossis Cationic Charges) tuaj yeem sib txawv rau "Sib npaug" Tus nqi ntawm cov khoom hauv dej thiab ua rau lawv ua ke ua ke thiab lub cev qhuav dej.Feem ntau, Anionic Flocculants yog siv los ntes cov khoom me me, thaum Cationic Flocculants yog siv los txhawm rau cov khoom organic.
PH Regulator
Txhawm rau tshem tawm cov hlau thiab lwm yam dej paug tawm ntawm cov dej khib nyiab, lub pH regulator tuaj yeem siv tau.Los ntawm kev nce cov pH ntawm cov dej, thiab yog li nce tus naj npawb ntawm cov hydroxide ions tsis zoo, qhov no yuav ua rau cov hlau ions zoo rau kev sib txuas nrog cov tsis zoo hydroxide ions.Qhov no ua rau cov lim tawm ntawm cov khoom ntom ntom thiab insoluble hlau.
Coagulant
Rau txhua txoj kev kho dej khib nyiab uas kho cov khoom raug tshem tawm, cov coagulants tuaj yeem sib sau cov kab mob tshem tawm kom yooj yim tshem tawm.Tshuaj coagulants siv rau Pretreatment ntawm Industrial Wastewater muab faib ua ib tug ntawm ob pawg: Organic thiab inorganic.
Inorganic Coagulants raug nqi-zoo thiab tuaj yeem siv rau ntau yam kev siv.Lawv muaj txiaj ntsig tshwj xeeb tiv thaiv cov dej nyoos ntawm qhov tsis tshua muaj turbidity, thiab daim ntawv thov no tsis haum rau cov organic coagulants.Thaum Ntxiv rau Dej, Inorganic Coagulants Los Ntawm Txhuas lossis Hlau Precipitate, nqus cov impurities hauv dej thiab ntxuav nws.Qhov no yog lub npe hu ua "Sweep-thiab-Flocculate" Mechanism.Thaum siv tau, Cov txheej txheem nce ntxiv tag nrho cov sludge uas yuav tsum tau tshem tawm ntawm cov dej.Common Inorganic Coagulants suav nrog Aluminium Sulfate, Aluminium Chloride, Thiab Ferric Sulfate.
Organic Coagulants muaj qhov zoo ntawm kev siv tsawg, me me sludge ntau lawm thiab tsis cuam tshuam rau Ph ntawm cov dej kho.Piv txwv ntawm Organic Coagulants suav nrog Polyamines Thiab Polydimethyl Diallyl Ammonium Chloride, Zoo li Melamine, Formaldehyde Thiab Tannins.
Post lub sij hawm: Mar-29-2023