Method for rinsing membrane-filtering unit of hollow fiber

Abstract

A method for flushing the hollow fibre membrane filter features that when the flow and quality of the product of membrane module are lowered, a flushing pump is turned on to perform reverse flushing and the reverse flushing channel is then cut off the perform forward flushing. Said reverse fushing and forward flushing are alternatively performed until the flow is restored to normal value.

Description

technical field [0001] The invention relates to a flushing method of a hollow fiber membrane filter device, that is, backwashing water is supplied in a regular pulsation manner to realize efficient hydraulic flushing, complete cleaning of the membrane surface, and restore membrane performance. Background technique [0002] In recent years, with the successful development of new membrane materials and membrane processes, membrane separation technology has been used in petrochemical, pharmaceutical, textile printing and dyeing, food, paper and other industrial production and wastewater treatment. The membrane will be polluted during the actual application process, resulting in a decrease in the water flux of the membrane and a deterioration of the retention performance of the membrane, which will affect the normal use of the membrane in severe cases. Membrane fouling is one of the bottlenecks that affect the wider application of membrane separation technology. Effective clean...

AI Technical Summary

Problems solved by technology

This cleaning method has the problems of low cleaning efficiency and large water consumption.

The cleaning effect of the above cleaning methods is limited by their own conditions. In many cases, the membrane fouling problem in the process of membrane use cannot be effectively solved.

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