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Enhanced anti-pollution reverse osmosis membrane backing material and manufacturing technique thereof

A reverse osmosis membrane and support material technology, applied in reverse osmosis, semi-permeable membrane separation, osmosis/dialysis water/sewage treatment, etc., can solve the problems of low flux per unit membrane area, high one-time investment, short service life, etc. , to achieve the effect of reducing the cost of use, not easy to damage and deform, and reducing roughness

Inactive Publication Date: 2016-05-04
ZHEJIANG LVLONG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing market, the industrial wastewater treatment of the printing and dyeing industry uses hydrolytic acidification-contact oxidation and other conventional mature processes to meet the current situation that it is difficult to meet the reuse requirements. Ultrafiltration and nanofiltration technologies have low flux per unit membrane area and primary Disadvantages of high investment and short service life

Method used

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Embodiment Construction

[0012] A kind of enhanced anti-pollution reverse osmosis membrane supporting material of the present invention and its production process are described in detail below:

[0013] The invention adopts polyester long fiber and knits it through KS warp knitting. The fabric formed by warp knitting is pad-rolled with a stiffening agent to form a thin film inside the fiber, between fibers or on the surface of the fiber. The size of the openings on the front side of the support body is larger than the size of the openings on the back side. The thickness of the support is ≤0.3mil. The longitudinal density of the support is ≤35 / 50mm, and the weft density is ≤40 / 50mm. The stiffening agent is composed of polyacrylate and epoxy resin, the mass ratio is 1.5:1, and the mass concentration of the stiffening agent is 670g / L.

[0014] A production process for enhanced anti-pollution reverse osmosis membrane support materials. After knitting long polyester fibers through KS warp knitting, they ...

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PUM

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Abstract

The invention relates to an enhanced anti-pollution reverse osmosis membrane backing material and a manufacturing technique thereof. Existing reverse osmosis membrane backing materials have the defects that unit membrane area flux is low, one-time investment is high, and service life is short. The enhanced anti-pollution reverse osmosis membrane backing material is characterized by being formed through KS warp knitting of polyester continuous fibers, and membranes are formed inside the fibers, between the fibers or on the surfaces of the fibers after stiffening agent padding is conducted on the warp knit fabric. According to the manufacturing technique, after KS warp knitting of the polyester continuous fibers is finished, padding and pre-heating are conducted, then transverse hot stretching is conducted, and baking is conducted after meshes of the product are stretched to be uniform. The enhanced anti-pollution reverse osmosis membrane backing material is high in elasticity and resilience, stiff and smooth, high in conformality, suitable for the intense-pressure environment for industrial wastewater treatment, and large in thickness.

Description

technical field [0001] The invention relates to an enhanced anti-pollution reverse osmosis membrane support material and a production process thereof. Background technique [0002] With the increasingly stringent wastewater discharge standards and rising water costs, people urgently require the development of sewage resource technology, and gradually turn their attention to the advanced treatment and reuse of dye-containing wastewater. Printing and dyeing wastewater has the characteristics of large water volume, high alkalinity, dark color, high content of organic matter, and large changes in water quality. It is a difficult-to-treat industrial wastewater. In the existing market, the industrial wastewater treatment of the printing and dyeing industry uses hydrolytic acidification-contact oxidation and other conventional mature processes to meet the current situation that it is difficult to meet the reuse requirements. Ultrafiltration and nanofiltration technologies have low ...

Claims

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Application Information

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IPC IPC(8): B01D61/10C02F1/44
CPCB01D61/025B01D61/10B01D2313/06C02F1/441
Inventor 陈俊锋
Owner ZHEJIANG LVLONG NEW MATERIAL CO LTD
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