Separation membrane and preparation method thereof, membrane separation equipment and sewage treatment method

A technology for separating membranes and ions, applied in the field of membrane separation, can solve the problems of low water flux, reduced selectivity, hindering the application and promotion of natural polymer separation membranes, etc.
CN113304625APending Publication Date: 2021-08-27SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
Publication Date
2021-08-27

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Abstract

The invention relates to a separation membrane and a preparation method thereof, membrane separation equipment and a sewage treatment method. The separation membrane comprises a natural polymer and layered double-metal hydroxide nanoparticles doped in the natural polymer, the natural polymer is selected from one of chitosan, chitin and cellulose, and the mass of the layered double-metal hydroxide nanoparticles is 0.5-3% of the mass of the natural polymer. Layered double metal hydroxide nanoparticles are doped in a natural polymer, and the hydrophilicity and internal water channels of the layered double metal hydroxide nanoparticles and the influence on the separation membrane forming process and the secondary structure are utilized, so that the separation performance of the separation membrane prepared from the natural polymer as a raw material is improved; therefore, the separation membrane with an excellent separation effect on various pollutants is obtained.
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Description

technical field

[0001] The invention relates to the field of membrane separation, in particular to a separation membrane, a preparation method thereof, membrane separation equipment and a sewage treatment method. Background technique

[0002] Membrane separation technology is an emerging separation technology that uses a selective semi-permeable membrane (separation membrane) as the core to separate, concentrate or purify multi-component mixtures. Because membrane technology has the characteristics of high separation efficiency, easy operation, short treatment process and easy industrial scale-up, it has been widely used in many fields such as chemical industry, environmental protection, biomedicine, food and beverage, and energy batteries, thus creating a huge society. The value and economic benefits have made important contributions to the progress of science and technology and the improvement of people's living standards. At present, the raw materials of commercial separ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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