PROCESS FOR REDUCING THE CONTENT OF TRIHALOMETHANE COMPOUNDS AND PRECURSORS THEREOF IN INFLUENT WATER

摘要

Abstract of the DisclosureMethods for reducing the trihalomethane contents for precursorthereof of influent water are disclosed. The methods comprise adding tothe influent water powdered activated carbon and a water soluble or waterdispersible cationic polymer. The polymers are chosen from: (a) poly-quaternary ammonium polymers formed from reaction of a secondary aminewith an epichlorohydrin or epoxide (b) cross-linked polyquaternary ammo-nium polymers formed from reaction of a secondary amine, epichlorohydrinor epoxide, and a third reactant selected from the group consisting ofammonia, primary amines, alkylenediamines and polyamines and (c) sub-stantially linear high molecular weight polyquaternary ammonium polymersof the type disclosed in U.S. Patent 3,288,770, such as polydiallyldi-methyl ammonium chloride.