Antibacterial composite reverse osmosis membrane

A technology of reverse osmosis membranes and antibacterial materials, applied in the field of polymer composite membranes, can solve the problems of being unable to inhibit biochemical pollution on the surface of reverse osmosis membranes, achieve good anti-biological pollution performance, simple preparation method, hydrophilicity and antibacterial performance Improved effect

Active Publication Date: 2012-07-04
浙江易膜新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, although great progress has been made in the research and development of anti-fouling reverse osmosis membranes, it is still impossible to inhibit the biochemical pollution on the surface of reverse osmosis membranes, and improving the antibacterial performance of reverse osmosis membranes is the key

Method used

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  • Antibacterial composite reverse osmosis membrane
  • Antibacterial composite reverse osmosis membrane
  • Antibacterial composite reverse osmosis membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 9-15

[0051] Table 2: Performance of antibacterial composite reverse osmosis membranes with different thicknesses of antibacterial materials

[0052]

[0053]

[0054] The above examples show that the reverse osmosis membrane with self-cleaning function can be prepared by coating the surface of the composite reverse osmosis membrane with fully aromatic polyamide as the desalination layer with different thicknesses of sericin, and the thickness of the sericin layer is not more than 0.5 μm The anti-homogeneous composite reverse osmosis membrane has the best performance.

Embodiment 16-20

[0056] Table 3: Performance of antibacterial composite reverse osmosis membranes with different antibacterial material layer crosslinking agents

[0057]

[0058]

[0059] The above examples show that the compound reverse osmosis membrane with antibacterial function can be prepared by coating the surface of the composite reverse osmosis membrane with fully aromatic polyamide as the desalination layer with sericin containing cross-linking agent.

Embodiment 21-26

[0061] Table 4: Performance of antibacterial composite reverse osmosis membranes with different antibacterial material layer preparation processes

[0062]

[0063]

[0064]

[0065] The above examples show that the compound reverse osmosis membrane with antibacterial function can be prepared by coating the surface of the composite reverse osmosis membrane with fully aromatic polyamide as the desalination layer with sericin protein containing cross-linking agent, but when the aqueous solution concentration of sericin protein is 100-500mg / l, the best effect is when the aqueous solution concentration of the cross-linking agent is 5-20mg / l.

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Abstract

The invention relates to a polymeric composite membrane structure, in particular to a polymeric composite reverse osmosis membrane with an antibacterial function. The antibacterial composite reverse osmosis membrane is characterized in that: a polyamide polymeric desalination layer is compounded on a porous supporting membrane through interfacial polycondensation of polyamine and polyacyl chloride; and a polymeric material with the antibacterial function is compounded on the polymeric desalination layer by a surface coating technology. Sericin with the antibacterial function is coated on the surface of the conventional composite reverse osmosis membrane, so that hydrophilcity and antibacterial activity of the composite reverse osmosis membrane can be greatly improved and high biological pollution resistance is achieved. The antibacterial composite reverse osmosis membrane has the characteristics of simplicity in preparation, high desalination rate and high water flux. The reverse osmosis membrane has wide application.

Description

technical field [0001] The invention relates to a polymer composite membrane, in particular to a composite reverse osmosis membrane with antibacterial function. technical background [0002] Reverse osmosis technology is a new green separation technology with high efficiency and energy saving. It has the outstanding characteristics of simple equipment, mild operating conditions, large processing capacity and high separation efficiency. Separation, environmental engineering, food, medicine and other fields have been widely used, and have achieved good economic and social benefits; in recent years, with the increasing shortage of global water resources and increasing water pollution, reverse osmosis technology has The field of water reuse has been more widely used and valued. However, one of the bottlenecks in the application of reverse osmosis membrane separation technology is membrane fouling, especially biochemical pollution on the membrane surface, which has seriously res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12B01D71/56
Inventor 丁国良赵经纬俞三传王炎锋
Owner 浙江易膜新材料科技有限公司
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