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Online cleaning method for filter membrane of water supply pipeline

A technology for water supply pipelines and filter membranes, applied in the field of online cleaning of water supply pipeline filter membranes, can solve the problems of increased cost, consumption, frequent replacement, etc., and achieve the effects of prolonging service life, avoiding complicated procedures, and reducing the number of replacements

Pending Publication Date: 2021-03-19
SAE TECH DELEVOPMENT DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of industrial water treatment, the filter membrane in the pipeline is indispensable, but due to its frequent replacement, it causes a lot of consumption and increases the cost
The existing cleaning method of the filter membrane needs to disassemble the filter membrane module for cleaning, but the disassembly procedure of the filter membrane module is cumbersome, and the removed filter membrane is likely to cause environmental pollution, and the effect of the existing filter membrane cleaning method is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] As an online cleaning method of a water supply pipeline filter membrane according to an embodiment of the present invention, the method comprises the following steps:

[0029] (1) inject the citric acid aqueous solution that pH is 2.5 into the water supply pipeline and submerge the filter membrane, discharge the citric acid aqueous solution or the acetic acid aqueous solution and rinse the water supply pipeline and the filter membrane with water after soaking for 6 hours;

[0030] (2) Turn on the circulation pump and inject into the water supply pipeline a sulfuric acid solution with a pH of 3, the concentration of the sulfuric acid solution is 35° C., close the circulation pump after the sulfuric acid solution is immersed in the filter membrane, and let it stand for 1 hour;

[0031] (3) Opening the circulating pump and inputting pH into the water supply pipeline is that the sulfuric acid solution of 3 rinses the filter membrane for 50 minutes, the flushing flow rate is ...

Embodiment 2

[0037] As an online cleaning method of a water supply pipeline filter membrane according to an embodiment of the present invention, the method comprises the following steps:

[0038] (1) inject the aqueous acetic acid solution that pH is 2.5 into the water supply pipeline and submerge the filter membrane, discharge the citric acid aqueous solution or the acetic acid aqueous solution and rinse the water supply pipeline and the filter membrane with water after soaking for 6 hours;

[0039] (2) Turn on the circulation pump and inject into the water supply pipeline a sulfuric acid solution with a pH of 3, the concentration of the sulfuric acid solution is 35° C., close the circulation pump after the sulfuric acid solution is immersed in the filter membrane, and let it stand for 1 hour;

[0040] (3) Opening the circulating pump and inputting pH into the water supply pipeline is that the sulfuric acid solution of 3 rinses the filter membrane for 50 minutes, the flushing flow rate is ...

Embodiment 3

[0046] As an online cleaning method of a water supply pipeline filter membrane according to an embodiment of the present invention, the method comprises the following steps:

[0047] (1) inject the citric acid aqueous solution that pH is 2 into the water supply pipeline and submerge the filter membrane, discharge the citric acid aqueous solution or the acetic acid aqueous solution and rinse the water supply pipeline and the filter membrane with water after soaking for 6 hours;

[0048] (2) Turn on the circulation pump and inject into the water supply pipeline a sulfuric acid solution with a pH of 3, the concentration of the sulfuric acid solution is 35° C., close the circulation pump after the sulfuric acid solution is immersed in the filter membrane, and let it stand for 1 hour;

[0049] (3) Opening the circulating pump and inputting pH into the water supply pipeline is that the sulfuric acid solution of 3 rinses the filter membrane for 50 minutes, the flushing flow rate is 12...

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PUM

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Abstract

The invention provides an online cleaning method of a filter membrane of a water supply pipeline. The method comprises the following steps: conducting soaking with an aqueous citric acid solution or an aqueous acetic acid solution, and then performing washing with water; performing soaking with a sulfuric acid solution, and then carrying out washing with the sulfuric acid solution in a forward direction and a reverse direction; washing the pipeline and the filter membrane with water; then washing the filter membrane with an aqueous ethylenediamine tetraacetic acid disodium solution; and finally, starting a suction pump to carry out air flushing on the water supply pipeline, and conducting standing for drying. According to the on-line cleaning method of the filter membrane of the water supply pipeline, after soaking with the citric acid solution or the acetic acid solution, soaking flushing and back flushing with the sulfuric acid solution, flushing with the aqueous ethylenediamine tetraacetic acid disodium solution and air flushing, the filter membrane is cleaned on line under the condition that a membrane assembly is not disassembled, so the replacement frequency of the filter membrane is reduced, cost is saved, the complex process of disassembling and cleaning the filter membrane is avoided, cleaning effect is good, and the service life of the filter membrane is prolonged.

Description

technical field [0001] The invention relates to a cleaning process method for tap water supply equipment, in particular to an online cleaning method for a filter membrane of a water supply pipeline. Background technique [0002] In the process of industrial water treatment, the filter membrane in the pipeline is indispensable, but due to its frequent replacement, it causes a lot of consumption and increases the cost. The existing cleaning method for the filter membrane needs to disassemble the filter membrane module for cleaning, but the disassembly procedure of the filter membrane module is cumbersome, and the removed filter membrane is likely to cause environmental pollution, and the effect of the existing filter membrane cleaning method is not ideal. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an online cleaning method for the filter membrane of the water supply pipeline [0004] I...

Claims

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Application Information

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IPC IPC(8): B01D65/02
CPCB01D65/02B01D2321/162B01D2321/168B01D2321/18
Inventor 肖宝军
Owner SAE TECH DELEVOPMENT DONGGUAN