Method for rinsing membrane-filtering unit of hollow fiber

A fiber membrane and hollow technology, which is applied in the flushing field of hollow fiber membrane filtration devices, can solve problems such as large water consumption, low cleaning efficiency, and limited cleaning effect, and achieve the goals of prolonging service life, improving flushing efficiency, and reducing flushing water consumption Effect

Inactive Publication Date: 2005-11-16
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Method for rinsing membrane-filtering unit of hollow fiber
  • Method for rinsing membrane-filtering unit of hollow fiber

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Embodiment Construction

[0015] The invention provides a cleaning method for a hollow fiber membrane filter device. In a specific embodiment, the hollow fiber membrane module used is a four-inch polyvinylidene fluoride microfiltration membrane module, and the feed of the hollow fiber membrane filtration device is the sewage of the circulating cooling tower, after being treated by the microfiltration membrane device , can intercept most of the suspended solids, colloids, algae and other microorganisms in the wastewater, and the product water is clear and transparent and can be reused as reclaimed water. The backwash in the industrial wastewater treatment process adopts the pulse water supply scheme, such as figure 2 As shown, the backwashing water therein is the water produced by the microfiltration membrane device. The method for cleaning the membrane by using the pulse supply of flushing water in the present invention will be described in detail below.

[0016] After a certain period of operation, ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/02
Inventor 王志樊智锋解利昕王纪孝王世昌
Owner TIANJIN UNIV
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