Evaluation of surface source water purification effectiveness using anionic and cationic flocculants
Abstract
Evaluation of surface source water purification effectiveness using anionic and cationic flocculants
Incoming article date: 10.01.2026The data of studies on the effectiveness of anionic and cationic flocculants used for reagent treatment of Sura River water during a flood together with aluminum sulfate coagulant are presented. In experiments, 2 anionic polyelectrolytes (K-4043 and PAA) and 3 cationic ones (VPK-402, K-6735 and K-6841) were studied, the flocculating ability of which was assessed by turbidity, permanganate oxidizability, residual concentration of aluminum ions and the color of water after two-stage purification by settling and filtration. The most significant results in the quality of natural water purification from organic and mineral impurities were obtained using cationic polyelectrolytes with a high molecular weight (about 107), which reduced the required coagulant doses by 33% compared with experiments using aluminum sulfate and polyacrylamide. The results of the laboratory studies presented in the article can be used at water treatment plants for river water treatment during the flood period.
Keywords: surface source water, coagulation, anionic and cationic flocculants, sedimentation, filtration, purification efficiency