Reverse osmosis membrane cleaning method

A technology of reverse osmosis membrane and cleaning agent, applied in the field of membrane cleaning, can solve the problems of increased energy consumption and property loss, reduced membrane use efficiency, low processing efficiency, etc., to achieve the effect of improving sterilization effect, avoiding pollution and improving use efficiency

Inactive Publication Date: 2017-10-20
HEFEI XINDA MEMBRANE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The treatment of low temperature, low turbidity, and high organic matter water has always been a difficult problem in the water treatment industry. The membrane elements after reverse osmosis treatment of this type of water will greatly increase the efficiency of the membrane due to the conventional cleaning agent formula and improper cleaning methods. Reduced, shortened service life, will lead to low actual processing efficiency of the system, high operating costs, resulting in the need for frequent membrane replacement, increased energy consumption and property losses

Method used

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Embodiment Construction

[0012] In order to make it easier for those skilled in the art to understand the solution of the present invention, the technical solution of the present invention will be further specifically described in conjunction with specific embodiments.

[0013] The invention relates to a cleaning method for reverse osmosis membrane, which includes the following steps: (1) soaking the reverse osmosis membrane in soaking liquid; (2) performing a conventional closed cycle on the soaked reverse osmosis membrane Wash for 1 hour, and discharge the cleaning agent; (3) Rinse the washed reverse osmosis membrane with desalinated water until the pH value of the rinsed water is between 5 and 10; (4) Use desalinated water as a solvent to configure Alkaline cleaning solution, the mass concentration components of the cleaning solution are: 0.1% sodium dodecylbenzenesulfonate, 0.1% sodium hydroxide, 1% ethylenediaminetetraacetic acid tetrasodium salt, and 0.1% sodium tripolyphosphate; The pH of the a...

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Abstract

The invention discloses a reverse osmosis membrane cleaning method. The method includes: placing a reverse osmosis membrane into a soak solution for soaking; subjected to the soaked reverse osmosis membrane to regular closed cycle cleaning with a cleaner; flushing the cleaned reverse osmosis membrane with desalted water; configuring an alkaline cleaner by taking the desalt water as a solvent; subjected to the flushed reverse osmosis membrane to regular closed cycle cleaning with the alkaline cleaner; cleaning the cleaned reverse osmosis membrane with the desalted water to complete cleaning of the reverse osmosis membrane. The reverse osmosis membrane is cleaned with the cleaner added with hydrochloric acid and the specially configured alkaline cleaner, organic matter, gel and residual bacteria can be effectively removed, damage of chemical agents to membrane components is reduced, pollution the membrane components by the bacteria is avoided, use efficiency of the membrane components is improved, and service life of the membrane components is prolonged.

Description

technical field [0001] The invention belongs to the field of membrane cleaning, and in particular relates to a cleaning method for reverse osmosis membranes. Background technique [0002] As a brand-new water treatment technology, reverse osmosis has penetrated into various industrial fields. In the actual application process, reverse osmosis membrane production enterprises have a wide range of universality, but lack of pertinence, and the cleaning method of membrane elements is also simple. Acid and alkali repeated cleaning. [0003] The treatment of low temperature, low turbidity, and high organic matter water has always been a difficult problem in the water treatment industry. The membrane elements after reverse osmosis treatment of this type of water will greatly increase the efficiency of the membrane due to the conventional cleaning agent formula and improper cleaning methods. Reduced, shortened service life will lead to low actual processing efficiency of the system,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/02
CPCB01D65/02B01D2321/168
Inventor 梁远争李胜明王海波
Owner HEFEI XINDA MEMBRANE TECH
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