Visible light micro-nano reactor membrane for selective removal of ammonia nitrogen, its preparation method and application

A micro-nano reactor and selective technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the difficulties of in-situ real-time regeneration, low selectivity of ion exchangers, and difficult treatment of regeneration solution, etc. To achieve the effect of stable water output, strong selective adsorption capacity and continuous regeneration
CN110862176BActive Publication Date: 2022-04-15BEIJING ORIGIN WATER FILM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING ORIGIN WATER FILM TECH
Publication Date
2022-04-15

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Abstract

The invention provides a method for preparing a visible light micro-nano reactor membrane for the selective removal of ammonia nitrogen. The amide is used as the main raw material, and the obtained mixed material solution is coated on a flat plate, and after the dimethylacetamide is transferred in water, it is taken out and dried to obtain a visible light micro-nano reactor film. The visible light micro-nano reaction membrane of the present invention can effectively realize the selective exchange of ammonium ions from the water body through the ammonium ion sieve material, cooperate with the chloride ion adsorbent visible light catalyst to realize the continuous regeneration of the ammonium ion sieve, and effectively realize the continuous operation of the membrane and stable water output , to solve the technical problems of low selectivity of conventional ion exchangers, difficult treatment of regeneration solution, high regeneration costs, and difficulty in realizing real-time regeneration in situ.
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Description

【Technical field】

[0001] The invention relates to the field of membrane technology, in particular to a visible light micro-nano reactor membrane with the selective removal function of ammonia nitrogen, and relates to the method and application of the membrane. 【Background technique】

[0002] With the development of industry, the modernization of life and the non-point source pollution of agriculture, the pollution of ammonia nitrogen in surface water is increasing day by day. For the ammonia nitrogen treatment of the actual municipal water polluted by low concentration ammonia nitrogen, the treatment technologies currently used mainly include biochemical method and ion exchange method.

[0003] The biggest disadvantage of the biochemical method is that the operation is unstable, the ammonia nitrogen and total nitrogen in the produced water fluctuate too much, and it is difficult to achieve efficient and stable operation. This is because the main factors affecting biological...

Claims

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