Lub ntsiab impurities hauv thee ntxuav dej khib nyiab yog coal slime hais thiab av nplaum hais, thiab lawv cov concentration yog ntau pua lossis ntau txhiab zaus ntawm cov dej phwj hauv tsev. Cov khoom raug tshem tawm no zoo li tsim ib qho kev ruaj khov colloidal. Thaum tso tawm rau hauv dej, cov teeb meem raug tshem tawm hauv nws yuav ua rau cov dej tsis sib haum thiab txo cov teeb pom kev zoo. Yog li ntawd, cov kab mob hauv dej xws li algae tsis tuaj yeem photosynthesize, thiab lawv txoj kev loj hlob thiab kev loj hlob yog inhibited. Cov pa oxygen tsis txaus thiab txo cov pa oxygen hauv cov dej yuav ua rau cov ntses ua pa thiab tuag. Lub voj voog vicious no muaj kev cuam tshuam tsis zoo rau ib puag ncig.
Yog li ntawd, nws yog ib qho tsim nyog yuav tau ntxiv coagulants, xws li txhuas sulfate, rau lub flocculation cov tshuaj tiv thaiv tank hauv kev kho cov thee ntxuav cov dej khib nyiab.
Lub mechanism ntawm txhuas sulfate yog tias nws plays lub luag hauj lwm ntawm coagulation thiab flocculation nyob rau hauv dej phwj kho mob. Daim ntawv thov coagulation ntawm aluminium sulfate yog hais txog kev siv aluminium sulfate ua coagulant hauv dej phwj coagulation kho. Nws tsuas yog siv lub hauv paus ntsiab lus coagulation los rhuav tshem qhov ruaj khov ntawm cov khoom me me hauv cov dej phwj tuaj.
Thaum kawg, cov teeb meem tshem tawm hauv cov thee ntxuav cov dej khib nyiab yog sib cais thiab cov dej tuaj yeem ua tau raws li cov qauv tso tawm.
