COAGULATION METHOD IN WASTE WATER TREATMENT

摘要

PURPOSE:To reduce sludge generation and to coagulate contaminated material at low cost by adding a specified small amount of stannic chloride solution to waste water contg. contaminated material. CONSTITUTION:To waste water contg. various dirty material, particularly stable colloid material such as emulsified oil, an aqueous stannic chloride solution of 0.05-0.25wt% is added and stirred. Dirty material contained is easily coagulated, which is settled or floated up and is separated. Because the quantity used is small, sludge generation is small and operation cost is low.