Filter screen cleaning method

A technology of filter screen and predetermined time, which is applied in the direction of filtration separation, separation method, filter regeneration, etc., can solve the problems of difficult cleaning and complex interaction, achieve good disinfection and sterilization, and reduce the cost of replacement and maintenance

Inactive Publication Date: 2015-08-19
SAE TECH DELEVOPMENT DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the complex interactions between these impurities make it difficult to wash with traditional physical methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The cleaning method of the filter screen of the present invention will be further described below in conjunction with the examples, but the present invention is not limited thereby.

[0018] One embodiment of the cleaning method of filter screen of the present invention at least comprises the following steps:

[0019] (1) Soak the filter screen with an acidic solution with a pH value of 2 to 3, and the soaking time is the first predetermined time;

[0020] (2) Rinse the filter screen with an alkaline solution with a pH value of 12-13 at a predetermined flow rate, and the flushing time is the second predetermined time;

[0021] (3) Soaking the filter screen in the alkaline solution for a third predetermined time;

[0022] (4) Rinse the filter screen with an alkaline mixed solution containing sodium hypochlorite with a pH value of 10-11.

[0023] Specifically, in step (1), the filter screen is disassembled from the machine equipment, and then soaked in an acidic solutio...

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PUM

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Abstract

The invention relates to a filter screen cleaning method. The method comprises the following steps: 1, immersing a filter screen in an acidic solution with the pH value of 2-3 for a first predetermined time; 2, flushing the filter screen by using an alkaline solution with the pH value of 12-13 for a second predetermined time; 3, immersing the filter screen in the alkaline solution for a third predetermined time; and 4, flushing the filter screen by using a sodium hypochlorite-containing alkaline mixed solution with the pH value of 10-11. The method can effectively remove impurities on the filter screen in order to save the replacement cost of the filter screen.

Description

technical field [0001] The invention relates to a cleaning method used in a water treatment process, in particular to a method for cleaning a filter screen in a tap water filtering device. Background technique [0002] Generally, in the wastewater treatment process of the waterworks, the step of using a filter device to filter is essential. Under daily water quality conditions, after being treated by the filter device, impurities in the water will remain on the filter screen, such as scale, organic matter, microorganisms, suspended particles or metal oxides, etc. These substances accumulate on the filter screen, which not only affects the filtration performance, but also affects water quality. Therefore, the filter needs to be cleaned and maintained regularly. However, the complex interactions between these impurities make it difficult to wash them with traditional physical methods. [0003] Therefore, there is an urgent need for an improved chemical cleaning method to ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D41/00
Inventor 魏子涵
Owner SAE TECH DELEVOPMENT DONGGUAN
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