Method for preventing and treating water treatment membrane pollution

The invention discloses a method for preventing and treating a water treatment membrane pollution. The method comprises the following steps of (1) permeation stripping: adding 50-120mg/L of water-soluble imidazoline into water and keeping the contact time of an aqueous solution and a to-be-processed membrane for 20-40min, (2) pre-oxidation: adding 80-200 mg/L of potassium persulfate and 40-100 mg/L of zinc chloride into a pre-oxidized water, wherein the contact time of the aqueous solution and the to-be-processed membrane is 40-60 minutes; and (3) washing and cleaning: adding 50-150mg/L of sodium chlorite into cleaning water, wherein the contact time of the aqueous solution and the to-be-processed membrane is 30-40min. Compared with the prior art, the method has the advantages of high applicability, good effect, capability of implementing an integrated technology, high treatment capacity, small occupied area, low investment cost, and easy, convenient and flexible implementation and also can be used for a newl