Anti-pollution antibacterial reverse osmosis membrane as well as preparation method and application thereof

A reverse osmosis membrane and anti-pollution technology, applied in the field of reverse osmosis, can solve the problems of anti-pollution and insufficient antibacterial ability, and achieve the effect of reducing the adhesion of pollutants, not easy to lose, and strong hydrophilic ability

Active Publication Date: 2020-12-04
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an anti-pollution and antibacterial reverse osmosis membrane, which takes into account both anti-po

Method used

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  • Anti-pollution antibacterial reverse osmosis membrane as well as preparation method and application thereof
  • Anti-pollution antibacterial reverse osmosis membrane as well as preparation method and application thereof
  • Anti-pollution antibacterial reverse osmosis membrane as well as preparation method and application thereof

Examples

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preparation example Construction

[0033] Specifically, the preparation method of the anti-pollution and antibacterial reverse osmosis membrane of the present invention comprises the following steps:

[0034] (1) Immerse the polysulfone ultrafiltration membrane in the prepared first aqueous phase solution containing multifunctional amine, keep it for 10-300 seconds, and remove the residual first aqueous phase on the surface of the polysulfone ultrafiltration membrane with a squeeze roller after taking it out solution.

[0035] (2) Then pour the prepared organic phase solution containing polybasic acid chloride on the surface of polysulfone ultrafiltration membrane for interfacial polymerization reaction, keep it for 5-120 seconds, pour off the organic phase solution, and use air knife or air knife to evenly Purge until there is no residual solvent on the surface of the membrane to form a nascent reverse osmosis membrane with the first polyamide layer.

[0036] (3) Pour the prepared second aqueous phase solutio...

Embodiment 1

[0079] The anti-pollution and antibacterial reverse osmosis membrane was prepared by the preparation process in Comparative Example 1. The difference is that in Step 5, after the interface polymerization is evenly blown by the air knife until there is no residual solvent on the surface of the membrane, the mass percentage of m-phenylenediamine is 0.1%, the mass percentage of camphorsulfonic acid is 3.2%, and three The mass percentage of ethylamine is 1.6%, the mass percentage of polyetheramine D-230 is 0.01%, and the mass percentage of kanamycin sulfate is 0.05%. The second aqueous phase solution is subjected to secondary interfacial polymerization, and the reaction time is 30s. After removing the second aqueous phase solution, put it in an oven at 80°C for heat treatment for 6 minutes, and finally remove the membrane and wash it with water to obtain anti-pollution and antibacterial reverse osmosis modified by polyetheramine D-230 and kanamycin membrane.

Embodiment 2

[0081] The anti-pollution and antibacterial reverse osmosis membrane was prepared by the preparation process in Example 1. The difference is that the mass percentage of polyetheramine D-230 in the second aqueous phase solution is changed to 0.1%, and the mass percentages of m-phenylenediamine, triethylamine, camphorsulfonic acid and kanamycin sulfate remain unchanged.

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Abstract

The invention discloses an anti-pollution antibacterial reverse osmosis membrane as well as a preparation method and application thereof. The reverse osmosis membrane comprises a non-woven fabric, a polysulfone ultrafiltration membrane, a first polyamide layer formed on the polysulfone ultrafiltration membrane, and a second polyamide layer containing polyether amine and aminoglycoside antibioticsfor modification and having an anti-pollution antibacterial function. The reverse osmosis membrane prepared by the invention has excellent anti-pollution property on the basis of keeping permeation selectivity, meanwhile, aminoglycoside antibiotics endow the membrane with stronger antibacterial property, can effectively inhibit the attachment and growth of microorganisms, has better application prospect in the water treatment fields of industrial water supply, wastewater reuse and the like, and has broad application prospects. Meanwhile, the anti-pollution antibacterial layer also shows excellent binding force and can efficiently and durably exert the anti-pollution antibacterial function in practical application.

Description

technical field [0001] The invention relates to the technical field of reverse osmosis, in particular to an anti-pollution and antibacterial reverse osmosis membrane, a preparation method and an application thereof. Background technique [0002] Reverse osmosis membranes can be used for the separation of various fluids. The most widely used reverse osmosis membrane is cross-linked aromatic polyamide reverse osmosis membrane, which usually uses m-phenylenediamine and trimesoyl chloride to carry out interfacial polycondensation reaction on the surface of porous polysulfone support membrane. Forms an aromatic polyamide reverse osmosis membrane. At present, the aromatic polyamide reverse osmosis membrane has been widely used in petrochemical, pharmaceutical, food, urban sewage treatment and many other fields. In the actual operation of the reverse osmosis membrane, due to the selective permeability of the reverse osmosis membrane itself, the pollutants (colloid, inorganic salt ...

Claims

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Application Information

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IPC IPC(8): B01D71/56B01D69/10B01D69/02B01D67/00B01D61/02
CPCB01D71/56B01D69/02B01D69/10B01D67/0006B01D61/025B01D2325/48B01D2325/30Y02A20/131
Inventor 许胜杰邬军辉高翔苏蕾赵伟国孙家宽
Owner WANHUA CHEM GRP CO LTD
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