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Stainless steel membrane shell is mainly used to load reverse osmosis membrane elements. It can be used to clean the membrane elements by carbon steel filter, which can reduce the fouling probability of the membrane elements, and then improve the power of the membrane elements.

A pressure vessel of reverse osmosis membrane module began to choose corrosion resistant coating of steel pipe lining, which is easy to crack, peel off and unsafe to use. Later, it was changed to an aluminium container, but it was found that Lv Zhirong Banner was not corrosion-resistant, and finally developed a stainless steel fiber container.

No matter what kind of membrane element must be loaded into pressure vessel before it can be used, because the size of each membrane element is different, so the scale of stainless steel pressure vessel used for filling membrane element is also different. In each pressure vessel, not only one membrane element can be installed in the stainless steel membrane shell, but also several membrane elements can be installed. Usually, in each pressure vessel, 1-7 membrane elements can be installed. Internal connectors are selected between the membrane elements and the membrane elements, and support plates, sealing plates and locking rings are selected between the membrane elements and the pressure vessel ports. Seal up.

At present, the pressure stainless steel membrane shell is mainly distinguished from the end. In the process of practical operation, the water supply from the water supply pipeline at one end of the pressure vessel enters the membrane element. In the membrane element, some feed water passes through the surface of the membrane to form low salt content commercial water, while others continue to move forward along the feed water channel and enter the next membrane element, because some water has higher salt content than the feed water, which is called feed water and concentrated water in the reverse osmosis system. The commercial water and concentrated water eventually lead out the pressure vessel by the commercial water channel and the concentrated water channel respectively.

Therefore, stainless steel membrane shell can obtain stainless steel with different strength and elastic function in a certain range to accept different loads to meet the requirements of structural function.

Author: Hangzhou Water Shield Technology Co., Ltd.

Website: http://www.zjhzsd.com/

Key words: carbon steel filter, stainless steel membrane shell