Using Coagulants to remove organic matter

摘要: This study examined removal of organic matter (OM) by coagulation in drinking water treatment. First, the ability three coagulants to simultaneously reduce turbidity and remove OM from was determined. The tested were commercial products alum polyaluminum chloride (PACl) a hydroxysulfate (PAHS) synthesized authors' laboratory. Tannic, humic, lignosulfonic, salicylic acids (SAL) used as model compounds cold warm water. effect concentration tannic acid also examined, semiquantitative relationships between coagulant dosage required In water, PACl PAHS efficient for all except SAL (which not itself removed, although it did inhibit reduction). However, poor presence or absence OM. more coagulants. had approximately same on at both temperatures, but its somewhat increased Although effectively reduced SAL, other substances greatly demand