WASTE WATER TREATMENT APPARATUS FOR WATER PURIFICATION PLANT

摘要

PROBLEM TO BE SOLVED: To provide a waste water treatment apparatus for a water purification plant by which blocking of membrane surfaces and blocking of flow paths among membrane elements caused by a sludge separated by filtration can be suppressed from being generated. SOLUTION: An immersion-type membrane separating apparatus 2 in which a diffused aeration device 9 is arranged below membrane modules 3 is arranged in a circulation zone 1a formed in the upper region of an immersion tank 1 are a settling zone 1b with a specified depth of water is formed in the lower region of the immersion tank 1.