Method for photocatalytic treatment of refractory organic compounds in wastewater

By modifying the ternary MoS2/CNTs/ZnS composite material and combining photocatalysis and Fenton-like reaction, the problems of low photocatalytic efficiency and material corrosion in the existing technology are solved, realizing continuous and efficient wastewater treatment and simplifying the treatment process.

CN119080321BActive Publication Date: 2026-06-26JILIN UNIVERSITY
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Patent Information

Application Number
CN202411378409.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2026-06-26
Estimated Expiration
2044-09-30

AI Technical Summary

Technical Problem

Existing photocatalytic technologies are inefficient in treating recalcitrant organic matter in wastewater. They require the addition of alcohols to activate free radical chain reactions and the materials are easily corroded. Furthermore, Fenton advanced oxidation requires additional catalysts.

Method used

A modified ternary MoS2/CNTs/ZnS composite material is used as a photocatalyst, combining photocatalysis and Fenton-like reaction. The release of alcohols is delayed by modifying carbon nanotubes, and MoS2 is used as a catalyst. There is no need to add an additional iron-based catalyst, and it can be recovered and recycled in biochemical treatment.

Benefits of technology

It improves photocatalytic efficiency, solves material corrosion problems, achieves continuous free radical activation and efficient decomposition of recalcitrant organic matter, simplifies the processing procedure, and reduces costs.

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Abstract

The application belongs to the technical field of sewage treatment and relates to a method for photocatalytically treating refractory organic matters in sewage, wherein the refractory organic matter wastewater is introduced into two-stage photocatalytic reactors, a modified ternary MoS2 / CNTs / ZnS composite material is added in the first-stage photocatalytic reactor, and nano-TiO2 photocatalytic material is added in the second-stage photocatalytic reactor, wherein the modified ternary MoS2 / CNTs / ZnS composite material is prepared by modifying carbon nanotubes with an alcohol-containing mixed solution and then preparing the ternary MoS2 / CNTs / ZnS composite material.
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Citation Information

Patent Citations

  • Graphene / ZnS-MoS2 nano solid solution photocatalyst having visible light catalytic activity

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  • Two-stage series photocatalytic oxidation treatment system for high-concentration sewage treatment

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