RO membrane module system and operation method

Abstract

The invention provides an RO membrane module system and an operation method. Liquid enters a high-pressure pump through a feeding pump; under the action of the high-pressure pump, the liquid enters anRO membrane module to obtain reverse osmosis produced water and reverse osmosis concentrated water; and under the condition that the feeding pump continues to operate, the high-pressure pump is stopped for a period of time, and a membrane layer in the RO membrane module is flushed. By utilizing the principle of a reverse osmosis membrane, the pollution of the RO membrane module can be effectivelydelayed, and the chemical cleaning period of the RO membrane module is prolonged by 1.5-2 times. The chemical cleaning period of the RO membrane module is prolonged so that the cost of chemical agents for cleaning the RO membrane module is reduced, the long-time stable operation of the system is ensured, the enterprise investment cost can be effectively reduced, and energy conservation and emission reduction are realized for enterprises. The whole process flow of the system is simple, and the system has the characteristics of simple device structure, strong operability, small occupied area and the like.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an RO membrane group system and an operation method. Background technique [0002] Since the 1950s, when membrane separation technology began to enter industrial applications, membrane separation technology has been widely used in chemical, food, medicine, environmental protection and other fields, and has been favored by the entire water treatment industry. Reverse osmosis membrane (RO) separation technology has the advantages of simple device, componentization, low energy consumption, convenient operation, small footprint and wide application range. It is widely used in industrial water treatment, pure water preparation, wastewater treatment, seawater desalination and It has been widely used in water desalination and some special chemical engineering. However, due to the existence of reverse osmosis membrane fouling, it will affect the stable operation of ...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes an RO membrane system and its operating method. Without introducing chemicals or adding new processing equipment, the principle of RO membrane is used and the operating mode of the system is changed to delay the pollution of the RO membrane system and prolong the life of the RO membrane system. The chemical cleaning cycle solves the problems of high investment cost, long process flow and complicated equipment in the existing technology

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