Pre-assembly process of roll-type membrane element and membrane element

Abstract

The invention relates to the technical field of water treatment, in particular to a roll-type membrane element pre-assembly process and a membrane element. The method comprises the following steps that concentrated water runner cloth is clamped between a first PE membrane and a second PE membrane, and pure water runner cloth is placed on the outer side surface of the first PE membrane or the outerside surface of the second PE membrane; and the pure water runner cloth, the first PE material membrane, the second PE material membrane and the concentrated water runner cloth are welded together. The membrane element is prepared by adopting the roll-type membrane element pre-assembly process. The PE membrane, the pure water runner cloth and the concentrated water runner cloth are welded and pre-assembled, wherein the step of placing the pure water runner cloth in the membrane element rolling process is omitted; therefore, on one hand, the rolling efficiency of the water treatment roll typemembrane element of the PE membrane is improved, on the other hand, damage to the PE membrane in the rolling process is reduced, and the quality of the membrane element is improved.

Description

technical field [0001] The present application relates to the technical field of water treatment, and in particular to a pre-assembly process of roll-type membrane elements and membrane elements. Background technique [0002] With the advancement and development of technology, membrane water treatment technology has become a very important water treatment technology due to its low energy consumption and high efficiency. [0003] The water treatment diaphragm based on the PE material diaphragm has the characteristics of thin thickness and large flux, and has been widely used in membrane water treatment technology. During the moving and rolling process of the PE material diaphragm, because the thickness of the PE material diaphragm is only about 20 μm, and it is easy to be charged with static electricity, when the PE material diaphragm (including concentrated water flow channel cloth) and pure water flow channel are separately rolled When laying, it is easy to cause damage to...

AI Technical Summary

Problems solved by technology

During the moving and rolling process of the PE material diaphragm, because the thickness of the PE material diaphragm is only about 20 μm, and it is easy to be charged with static electricity, when the PE material diaphragm (including concentrated water flow channel cloth) and pure water flow channel are separately rolled When laying, it is easy to cause damage to the PE material diaphragm and affect the rolling quality of the membrane element

In the traditional rolling process, in order to avoid damage to the PE material diaphragm, the only way to reduce the friction between the runner cloth and the PE material diaphragm is to reduce the rolling speed.

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