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A method of cleaning membrane

A technology of cleaning guns and high-pressure cleaners, applied in the field of cleaning membranes, can solve the problems of microbial influence, secondary pollution, complicated operation, etc., and achieve the effects of good protection, low labor intensity, and simple operation

Active Publication Date: 2016-09-14
JIANGXI JDL ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies of the existing membrane cleaning methods, namely complex operation, easy to cause secondary pollution, possible damage to the membrane and possible impact on microorganisms, and independently designed a method for cleaning membranes, which is suitable for cleaning hollow fibers Membrane modules such as membranes, flat membranes or ceramic membranes can clean the membrane surface in water or directly, and the cleaning process is highly adaptable

Method used

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Effect test

Embodiment 1

[0020] A school’s domestic wastewater is treated by JDL membrane technology processor, the scale is 100t / d, the membrane module is hollow fiber membrane, the membrane pressure before cleaning is -0.02MPa, and the flux is 3.5m 3 / h.

[0021] Adopt the method of the present invention to directly clean the membrane surface in water, and the specific implementation method is:

[0022] Stop the JDL membrane technology processor, open the drain valve, close the drain valve when the liquid level reaches 5 cm above the membrane module (9), and do not disassemble the membrane module. The water produced by the JDL membrane technology processor enters the cleaning liquid barrel (1), and is pressurized by the high-pressure cleaner (3) to reach 3MPa. The high-pressure cleaner (3) is connected to the cleaning gun. The cleaning gun is made of stainless steel and has a length of 1.5 meters. , the outlet (8) is a two-way width of 1.0 mm and a length of 5 mm symmetrical gap, the gun rod (7) of...

Embodiment 2

[0024] The domestic wastewater of a hotel is treated by JDL membrane technology processor, the scale is 200t / d, the membrane modules are hollow fiber membranes, the membrane pressure before cleaning is -0.03Mpa, and the flux is 6m 3 / h.

[0025] Adopt the inventive method to directly clean the membrane surface, and the specific implementation method is:

[0026] Stop the JDL membrane technology processor, let it stand for 10 minutes, open the drain valve, the supernatant will flow out through the drain valve, close the drain valve when the liquid level is below the membrane module (9), and do not disassemble the membrane module. The sodium hypochlorite medicinal solution with a mass concentration of one thousandth in the cleaning solution barrel (1) is pressurized by the high-pressure cleaner (3), and the pressure reaches 1 MPa. The high-pressure cleaner (3) is connected to the cleaning gun, and the material of the cleaning gun is stainless steel. , the length is 2.5 meters, ...

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Abstract

The invention discloses a cleaning gun and a membrane washing method. The cleaning gun comprises a control handle, a connector, a direction sign, a gun barrel, an outlet and a gun head. The control handle of the cleaning gun is connected with the connector through screw threads, and the gun head is welded with the gun barrel. The gun barrel adopts a hollow pipeline with the diameter being 5 to 30 millimeters and the length being 0.5 to 3.0 meters, and is made of stainless steel, cast iron or plastic. The outlet of the cleaning gun adopts a bidirectional and symmetrical gap with the width being 0.5 to 2.0 millimeters and the length being 3.0 to 10.0 millimeters. The membrane washing method comprises the steps that a high pressure washer is connected with the cleaning gun; cleaning fluid is pressurized through the high pressure washer and then cleans the surface of a membrane through the cleaning gun, so as to achieve the purposes of eliminating pollutants on the membrane and restoring the membrane flux. The cleaning gun can clean the surface of the membrane without dismounting a membrane component, is convenient to operate and good in cleaning effect, and cannot cause secondary pollution, cannot damage the membrane and cannot influence microorganisms.

Description

technical field [0001] The invention relates to a method for cleaning membranes and belongs to the technical field of environmental protection water treatment. Background technique [0002] With the rapid development of urbanization and industrialization in my country, domestic and industrial water consumption has doubled, and the discharge of urban sewage and industrial wastewater has also increased sharply, which has caused a serious shortage of water resources and a serious deterioration of the water environment. In this severe environment, in order to improve the environment and regenerate water resources, membrane reactors combined with traditional sewage treatment technology and membrane separation technology have gradually been applied in various fields, and applications such as hollow fiber membranes and flat membranes have also become more and more wide. However, while the membrane exhibits its excellent performance, membrane fouling also affects its normal operati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B3/02
CPCB08B3/02
Inventor 廖志民周荣忠李文玄邓意林胡姣姣史文彦张强华王芳芳谢锦文李昆许莹莹刘金凤许振荣王延龙
Owner JIANGXI JDL ENVIRONMENTAL PROTECTION CO LTD
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