Lub hauv paus theoretical yog "agglomeration" txoj kev xav. Flocculants feem ntau ua haujlwm los ntawm kev nqa cov pab pawg zoo (lossis tsis zoo) raug them thiab qhov tsis zoo (lossis qhov zoo) raug them, nyuaj-kom- cais cov khoom hauv dej los ze zog ua ke, txo lawv lub peev xwm thiab muab tso rau hauv qhov tsis ruaj khov. Lawv cov khoom sib sau ua ke ua rau cov khoom sib sau ua ke, tso cai rau lawv sib cais los ntawm kev siv lub cev lossis tshuaj.
Cov neeg sawv cev siv los ua kom tiav lub hom phiaj no feem ntau hu ua flocculants. Flocculants feem ntau yog siv rau hauv dej thiab kho dej khib nyiab.
Muaj ntau hom flocculants, xws li qis-molecular- hnyav mus rau siab -molecular- hnyav, los ntawm ib qho - cov khoom sib xyaw mus rau hom sib xyaw. Cov qauv dav dav yog mus rau pheej yig, siv tau, tsis yog- tshuaj lom, thiab cov khoom siv tau zoo. Inorganic flocculants yog pheej yig, tab sis lawv tuaj yeem cuam tshuam rau tib neeg kev noj qab haus huv thiab ib puag ncig. Organic polymeric flocculants, thaum xav tau me me, ua kom tsawg, muaj peev xwm flocculation muaj zog, yooj yim sib cais flocs, thiab zoo tshem tawm cov roj thiab tshem tawm cov khib nyiab, muaj cov seem monomers nrog teratogenic, carcinogenic, thiab mutagenic cuam tshuam, yog li txwv lawv daim ntawv thov. Microbial flocculants, vim lawv tsis muaj kev ua qias tuaj nruab nrab thiab siv tau yooj yim, qhia txog kev cia siab rau daim ntawv thov. Cov kab mob microbial flocculants tuaj yeem hloov lossis ib nrab hloov cov tshuaj inorganic thiab hluavtaws organic polymeric flocculants yav tom ntej. Kev tshawb fawb thiab kev siv cov microbial flocculants yog nyob rau hauv lawv cov theem thaum ntxov, thiab lawv cov yam ntxwv thiab qhov zoo ntawm kev nthuav dav rau txoj kev loj hlob ntawm kev kho dej technology.
