Method for preventing breaking of membrane yarns during washing process of curtain-type membrane assembly

Abstract

The invention discloses a method for preventing the breaking of membrane yarns during the washing process of a curtain-type membrane assembly. The method comprises the following steps: (1) bundling hollow fibrous membrane yarns, cutting the hollow fibrous membrane yarns, and sealing holes; (2) pouring AB rubber into a curtain-type membrane shell, immediately inserting the hollow fibrous membrane yarns into the membrane shell, wherein the insertion depth is 3cm to 5cm; (3) respectively inserting two nonwoven fabric strips in the width of 5mm to 20mm into the left side and the right side in the membrane shell, wherein the length of each nonwoven fabric strip is 100 to 140 percent of the length of each membrane yarn; and (4) after the AB rubber is cured, respectively adhering a cloth strip in a width of 5mm to 20mm on a half position and a quarter position of the non-woven fabric strip, surrounding the cloth strip by the hollow fibrous membrane yarns, the length of the cloth strip is 100 to 140 percent of the width of the curtain-type membrane assembly. The method has beneficial effects that the membrane yarns can be prevented from being intertwined during the aeration process of the curtain-type membrane assembly, and the service life of the curtain-type membrane assembly is prolonged.

Description

technical field [0001] The invention relates to the field of application cleaning of curtain membrane modules, in particular to a method for preventing membrane filaments from breaking during the cleaning process of curtain membrane modules. Background technique [0002] During the application process of the curtain membrane module, some pollutants will be attached to the surface of the membrane filament of the membrane module, which seriously affects the filtration performance of the membrane module. In practical applications, after the system has been running for a period of time, physical or chemical methods are usually used for cleaning, such as adding acid-base reagents and physical aeration. [0003] These methods can clean the pollutants attached to the surface of the membrane filaments to a certain extent, but during the aeration process, the swing of the membrane filaments often makes the membrane filaments of adjacent membrane modules entangled together, affecting ...

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Problems solved by technology

[0003] These methods can clean the pollutants attached to the surface of the membrane filaments to a certain extent, but during the aeration process, the swing of the membrane filaments often makes the membrane filaments of adjacent membrane modules entangled together, affecting the cleaning effect and The use of curtain membrane modules requires manual separation of the entangled membrane filaments; but this will tear and damage the membrane filaments, reducing the life of the membrane module and taking time and effort

[0004] In order to prevent the membrane from being damaged, people often solve this problem by increasing the strength of the membrane, such as concrete membranes and lining membranes, which cannot fundamentally solve a series of problems caused by membrane winding.

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