METHOD FOR COAGULATING AND DEWATERING SLUDGE WITH USE OF POLYMER COAGULANT AND METHOD FOR COAGULATING AND PRECIPITATING WASTE WATER WITH USE OF POLYMER COAGULANT

摘要

Using a continuous dissolving and feeding device 1 equipped with two or more storage tanks 2 and 3 for storing two or more kinds of powdery polymer coagulants individually, feeders 4 and 5 which are able to control feed rate, connected to the storage tanks 2 and 3, a mixing tank 6 equipped with a feed water pump, and a filtering member 8, the powdery polymer coagulants stored in the storage tanks 2 and 3 are fed to the mixing tank 6 via the feeders 4 and 5; a dispersing solution is prepared by mixing the powdery polymer coagulants with water in the mixing tank 6; the dispersing solution is passed through the filtering member 8 to prepare an aqueous coagulant solution; and the aqueous coagulant solution is added to sludge or waste water.