Zaj duab xis siab kua nplaum yog kua nplaum ob-txheej, qhov ua kom kub zoo tshaj yog li 60 ℃. Qhov chaw cia khoom kub yuav tsum yog 5 ° C thiab 30 ° C, thiab flocculation yuav tshwm sim qis dua 5 ° C. Lub thoob yas yuav tsum tsis txhob muab tso ncaj qha rau hauv av, tab sis yuav tsum muab tso rau ntawm daim phiaj ntoo, tshwj xeeb tshaj yog thaum lub caij ntuj no. Lub sijhawm siv tau ntawm cov zaj duab xis nplaum yog 6 lub hlis txij li hnub tawm hauv lub Hoobkas yam tsis qhib thawj lub ntim.
Zaj duab xis siab kua nplaum npaj piv: tus neeg sawv cev tseem ceeb: tus sawv cev tua kab=20: 1. Thaum sib xyaw tus neeg sawv cev thiab tus neeg sawv cev ua kom zoo, khaws tus neeg sawv cev tseem ceeb hauv lub xeev nplawm, thiab maj mam ntxiv cov tshuaj tua kom txias thiab do tsawg kawg yog 3 feeb. Cov kua nplaum ntau npaum li cas npaj txhua lub sijhawm yuav tsum siv nyob rau hauv 4 teev. Lub taub hau yas yuav tsum nruj nreem npog tom qab tov.
