WASTE WATER TREATING DEVICE

摘要

PURPOSE:To decrease the fat and oil components contained in purified water to be discharged and to decrease the discharge treatment amt. of the oil- components in a separating tank by efficiently decomposing and digesting the fat and oil components in waste water. CONSTITUTION:A microorganism enzyme agent which can decompose the fat and oil components is charged into a raw water tank 1 and a decomposition digester tank 2 and an air diffusion pipe for aeration is disposed, by which the decomposition treatment of the waste water is executed in two stages and the treatments thereof are surely and efficiently executed. The fat and oil components which are heretofore imperfect in decomposition are again subjected to the decomposition treatment by connecting a fat and oil return pipe 17A and a sludge return pipe 18 between the decomposition digester tank 2 and the separating tank 3, by which the discharge treatment amt. of the oil components is decreased.