WASTEWATER TREATMENT METHOD AND MEMBRANE TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a high power membrane treatment apparatus capable of stabilizing a permeated water flux of a membrane module.SOLUTION: A circulation tank 1 for storing wastewater W is communicated with a first membrane module 2A via a first supply line 3A. The condensation side of the first membrane module 2A is communicated with a second membrane module 2B via a second supply line 3B. Further, the condensation side of the second membrane module 2B is communicated with a third membrane module 2C via a third supply line 3C. A return line 5 is connected to the condensation side of the third membrane module 2C. A branch line 6 as a supply mechanism is connected to the first supply line 3A, and the branch line 6 is merged with the second supply line 3B and the third supply line 3C.