Wettability regulation and control conductive composite film, preparation method and film treatment device

By preparing a conductive composite membrane under ice bath conditions and combining it with a DC power supply and an air pump to achieve in-situ self-cleaning, the problem that existing antifouling membrane technologies are unable to cope with complex pollutants is solved, and efficient membrane fouling inhibition and low-energy water treatment effects are achieved.

CN122076256AActive Publication Date: 2026-05-26NORTHWEST ENGINEERING CORPORATION LIMITED
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Patent Information

Application Number
CN202610538659.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-05-26
Estimated Expiration
2046-04-22

AI Technical Summary

Technical Problem

Existing antifouling membrane technologies are ill-suited to dealing with complex contamination from multiple pollutants, and existing devices are complex in structure and energy-intensive, making them unsuitable for small and medium-sized water treatment scenarios.

Method used

A conductive polymer layer is formed by preparing a conductive solution of a nitrogen-containing heterocyclic compound under ice bath conditions. This layer is then immersed in a hydrophilic modified solution of dopamine hydrochloride and sodium alginate to form a wettability-regulated conductive composite film. In-situ self-cleaning is achieved by combining a DC power supply and an air pump.

Benefits of technology

It effectively inhibits membrane fouling, including complex fouling by multiple contaminants, exhibits slow flux decline, and provides simple and effective cleaning. The device has a simple structure and low energy consumption, making it suitable for small and medium-sized water treatment applications.

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Abstract

The invention discloses a preparation method of a wettability regulation and control conductive composite film, and belongs to the technical field of water treatment equipment. Comprises: preparing an oxidant solution; under an ice bath condition, adding a nitrogen-containing heterocyclic compound into the oxidant solution to obtain a conductive solution; immersing a substrate supporting layer in the conductive solution to obtain a conductive polymerization layer; mixing dopamine hydrochloride and sodium alginate to prepare a hydrophilic modified solution; and immersing the conductive polymer layer in the hydrophilic modification liquid, and statically immersing at room temperature to form the conductive composite film. The conductive composite membrane is strong in detergency, can effectively inhibit membrane pollution including combined pollution of complex pollutants, and is slow in flux attenuation, simple and effective in cleaning mode and high in membrane flux recovery rate.
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