Aluminium sulfate feem ntau yog siv hauv kev kho dej phwj tuaj, haus dej kom huv, ntawv sizing, coagulation thiab sedimentation ntawm cov dej khib nyiab thiab lwm yam kev lag luam.
Hauv daim ntawv thov, ua ntej yaj cov khoom txhuas sulfate hauv dej ntawm qhov sib piv ntawm 5% ~ 10% nrog kev sib xyaw kom zoo kom txog thaum pob tshab thiab particle-dawb los npaj cov tshuaj aqueous. Cov koob tshuaj yuav tsum tau kho raws li dej turbidity thiab cov pa phem concentration. Cov tshuaj noj rau kev haus dej huv yog 5-15 grams ib tuj dej, thiab 15-50 grams ib tuj rau cov dej khib nyiab.
Ntxiv nws sib npaug rau cov dej hauv cov ntsiab lus sib cais, do sai sai rau 1-2 feeb rau kev sib xyaw tag nrho, tom qab ntawd maj mam ua rau flocculation rau 3-5 feeb, thiab cia nws sawv ntsug rau 10-30 feeb kom ua tiav cov flocculation thiab sib cais ntawm cov khib nyiab, colloids thiab impurities. Rau kev pom zoo, tus nqi pH dej yuav tsum tau tswj ntawm 6.0-7.8 thaum siv.
Tsis txhob sib tov thiab noj nrog cov khoom muaj zog alkaline. Cov neeg ua haujlwm yuav tsum hnav cov hnab looj tes tiv thaiv thiab lub qhov ncauj qhov ntswg kom tiv thaiv daim tawv nqaij thiab ua pa ua pa los ntawm cov plua plav thiab tshuaj.