Washing method for reverse osmosis membrance

Abstract

The invention discloses a washing method for a reverse osmosis membrance. The method comprises the steps that the reverse osmosis membrance is placed in a washing box for standing, preimpregnation andcirculating pickling with an acid washing agent, and is subjected to circulating water washing, soaking, circular alkali washing, fungicide spraying and washing, and the method aims to solve the problems that sediments and the residual organic flocculant in liquid form an insoluble polymer so as to greatly affect the effect of reverse osmosis treatment.

Description

technical field [0001] The invention relates to cleaning of reverse osmosis membranes, in particular to a cleaning method of reverse osmosis membranes. Background technique [0002] The reverse osmosis membrane is often used to control the membrane separation system. After the reverse osmosis membrane has been in operation for a period of time, there will be scaling deposits. The scaling deposits are formed by the pollution of suspended solids in water or insoluble salts. The common pollution is calcium carbonate precipitation , calcium sulfate precipitation, microorganisms, occasional metal oxides, silicon deposits; [0003] In the long-term use of the membrane separation system, if the sediment is not removed, the sediment and the organic coagulant remaining in the liquid will form an insoluble polymer, which will reduce the performance of the reverse osmosis membrane and easily lead to damage to the reverse osmosis membrane, which greatly affects the reverse osmosis treat...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cleaning method for reverse osmosis membranes, in order to solve the problem that sediments and organic coagulants remaining in liquid form insoluble polymers, which greatly affects the effect of reverse osmosis treatment