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This paper aims at studying some complex coagulants derived from the medium anionic polymer and medium cationic surfactant in order to evaluate the opportunity to use them in destabilizing and removing th e colloidal systems from water and wastewater. In this respect, medium anionic copolymers of acrylamide and sodium acrylate with commercial Preastol 2540, and a medium cationic surfactant derived from triethanolamine with commercial name of Tetranyl AT-7590 were used in order to obtain these complex coagulants. T...