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Antibacterial conductive composite film for water treatment as well as preparation method and application of antibacterial conductive composite film

A composite membrane and water treatment technology, which is applied in the field of water treatment, can solve the problems of membrane flux decrease and electrostatic effect failure, etc., and achieve the effects of overcoming poor sustainability, improving service life and low production cost

Pending Publication Date: 2022-07-05
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, once metabolically active microorganisms are attached to the surface of the composite conductive membrane provided by the above-mentioned prior art, its electrostatic effect will fail, and the microorganisms will grow rapidly on the membrane surface, resulting in a significant decrease in membrane flux.

Method used

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  • Antibacterial conductive composite film for water treatment as well as preparation method and application of antibacterial conductive composite film
  • Antibacterial conductive composite film for water treatment as well as preparation method and application of antibacterial conductive composite film
  • Antibacterial conductive composite film for water treatment as well as preparation method and application of antibacterial conductive composite film

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] An antibacterial conductive composite membrane for water treatment, the antibacterial conductive composite membrane is composed of a polytetrafluoroethylene membrane (Millipore, 100 nm) and an antibacterial conductive layer disposed on the surface of the polytetrafluoroethylene membrane;

[0045] The materials of the antibacterial conductive layer include polypyrrole, 3-chloro-2-hydroxypropyltrimethylammonium chloride and sodium dodecylbenzenesulfonate, wherein polypyrrole and 3-chloro-2-hydroxypropyl The mass ratio of trimethylammonium chloride is 1:3;

[0046] The preparation method of the antibacterial conductive composite membrane for water treatment provided by this embodiment includes the following steps:

[0047] (1) Immerse the polytetrafluoroethylene film in 1 mol / L of ferric chloride, 0.0025 mol / L of sodium dodecylbenzenesulfonate and 0.0025 mol / L of 3-chloro-2-hydroxypropyltrimethyl in the mixed aqueous solution of ammonium chloride for 30min to obtain the s...

Embodiment 2

[0050] An antibacterial conductive composite membrane for water treatment, the only difference from Example 1 is that the mass ratio of polypyrrole and 3-chloro-2-hydroxypropyltrimethylammonium chloride is 1:1, and other parameters and steps are the same as in Example 1.

Embodiment 3

[0052] An antibacterial conductive composite membrane for water treatment, the only difference from Example 1 is that the mass ratio of polypyrrole and 3-chloro-2-hydroxypropyltrimethylammonium chloride is 1:5, and other parameters and steps are the same as in Example 1.

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Abstract

The invention provides an antibacterial conductive composite film for water treatment as well as a preparation method and application of the antibacterial conductive composite film. The antibacterial conductive composite film comprises a base film and an antibacterial conductive layer arranged on the surface of the base film, the antibacterial conducting layer is made of a conducting material and a sterilizing material; the conductive material and the sterilizing material are doped in the antibacterial conductive layer, so that the problem of poor operation continuity easily generated when the base film is independently used is successfully solved, and the service life of the base film is effectively prolonged; and the conductive material and the sterilizing material of the antibacterial conductive layer can generate a synergistic effect, so that the antibacterial pollution resistance of the antibacterial conductive composite membrane is improved under the condition that the pure water membrane flux of the finally obtained antibacterial conductive composite membrane is not reduced, and the antibacterial conductive composite membrane has important research significance.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an antibacterial conductive composite membrane for water treatment and a preparation method and application thereof. Background technique [0002] At present, membrane fouling in the process of water treatment is the biggest problem in the application of membrane technology. Among them, biological fouling is the most common, and microorganisms widely exist in air, water, soil and other places. Therefore, in membrane technology, the raw material liquid inevitably contains active microorganisms, and because microorganisms tend to form colonies or biofilms to resist drastic changes in external conditions, it is more conducive to their survival. Therefore, when the raw material liquid is in contact with the membrane surface. , it provides favorable conditions for the adhesion of microorganisms on the surface of the membrane, and because microorganisms can grow and...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D69/02B01D67/00C02F1/44C02F1/50C02F103/04
CPCB01D69/12B01D69/02B01D67/0079C02F1/44C02F1/50B01D2325/48B01D2325/26Y02W10/10
Inventor 孙境求胡承志赵凯芦超杰曲久辉
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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