A study was designed to investigate the chemical coagulationprocess for the treatment of the potato food industry wastewater of theChipsy factory located at AbiSier, Egypt. The chemicalcoagulants used in the study include alum, ferric chloride, calciumchloride, ferric sulphate and Nalco as polymer. Variable doses of thesecoagulants were examined to determine the optimum dose. Results obtainedshowed that chemical treatment coagulation, flocculation, followed bysedimentation was efficient to reduce the chemical oxygen demand COD,total suspended solids TSS and turbidity significantly. Remarkablevariation of the removal efficiency depends on the type of coagulant.Ferric chloride and ferric sulphate were more efficient than calciumchloride. Combination of Nalco with each of the studied coagulantsimproved the removal efficiency remarkably. Reduction of 9194 per centof turbidity, 9397 per cent of COD, and 9497 per cent of the TSS wasachieved with these combinations.
Environmental Management and Health – Emerald Publishing
Published: Mar 1, 1991
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