A kind of ultrafiltration polyethylene porous membrane for water treatment and its preparation process

Abstract

The invention discloses an ultrafiltration polyethylene porous membrane for water treatment and a preparation process thereof. The ultrafiltration polyethylene porous membrane is mainly made of polyethylene, spherical nano-copper, 5,5-dimethylhydantoin, dichloropropanol, sodium hydroxide, quaternary ammonium chitosan, nano-titanium dioxide, and sodium laurate. The ultrafiltration polyethylene porous membrane disclosed by the present invention has excellent antibacterial and antibacterial properties. By adjusting the reaction temperature, 5,5-dimethylhydantoin, dichloropropanol, and sodium hydroxide can achieve multiple reactions to generate 3- (3‑Chloro‑2‑hydroxypropyl)‑5,5‑dimethylhydantoin and quaternary ammonium groups play a synergistic bactericidal effect, and also generate 5,5‑dimethylhydantoin epoxide, which is coated on The polyethylene surface makes the spherical nano-copper and polyethylene more tightly combined. The spherical nano-copper is not easy to fall off when the polyethylene porous membrane is used, and it can be recycled, with long antibacterial life and high practicability.

Description

technical field [0001] The invention relates to the technical field of ultrafiltration porous membranes, in particular to an ultrafiltration polyethylene porous membrane for water treatment and a preparation process thereof. Background technique [0002] With the increasingly serious water pollution, the problem of water treatment has also been put on the agenda. Simple physical treatment is difficult to filter out various impurities in wastewater, and the treatment effect is not good. It is difficult to avoid complex chemical treatment. It is difficult to clean the secondary pollution by introducing new ions. Membrane treatment method has become a better treatment solution in wastewater treatment, which can not only filter impurities at a deeper level, but also avoid secondary chemical pollution. [0003] However, various impurities in the wastewater will adhere and deposit on the surface of the ultrafiltration membrane, resulting in a smaller pore size and lower performanc...

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Problems solved by technology

[0003] However, various impurities in the wastewater will adhere and deposit on the surface of the ultrafiltration membrane, resulting in a smaller pore size and lower performance of the ultrafiltration membrane, and bacteria, fungi and other microorganisms will be enriched on the surface of the ultrafiltration membrane, and then breed. , causing damage to the ultrafiltration membrane itself, resulting in permanent defects, and a substantial drop in performance. Therefore, at present, it is urgent to propose an ultrafiltration membrane with excellent antibacterial effect and outstanding bactericidal ability.

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