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In this paper, new composite coagulants, polymeric ferric aluminum–polydimethyl diallylammonium chloride, were synthesized by combing inorganic coagulant polymeric ferric aluminum chloride (PFAC) with organic coagulant polymer polydimethyl diallylammonium chloride (PDMDAAC) under different molecular weight ratio (ferrum and aluminum to PDMDAAC, Wr=20, 10 and 4) and the same basicity. Furthermore,...
The growth, breakage, regrowth and fractal nature of the aggregated flocs formed by a new composite coagulant, polyferric aluminum chloride–polydimethyldiallylammonium chloride, with humic acid were investigated. Different solution pH and various shear forces were investigated to evaluate the size, strength and structure of the flocs. The results showed that the flocs generated in acid conditions...
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