Landfill leachate photocatalytic treatment method based on copper oxide nanoflowers

CN119219116AActive Publication Date: 2024-12-31SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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Patent Information

Application Number
CN202411559002.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2024-12-31
Estimated Expiration
2044-11-04

AI Technical Summary

Technical Problem

The existing photocatalytic waste leachate treatment technology is prone to blockage in the treatment of high concentrations of organic pollutants, and changes in pH value affect catalytic activity, resulting in reduced efficiency and insufficient stability.

Method used

By adjusting the pH of the waste leachate and using intermittent light technology, the light intensity and period are controlled to ensure that the catalyst operates in a stable environment and preventing active sites from being blocked and overoxidized.

Benefits of technology

It improves catalytic efficiency and stability, expands the application potential of technology in complex water environments, ensures that the catalyst maintains high activity under acidic or alkaline conditions, and avoids excessive oxidation of the catalyst surface.

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Abstract

The invention provides a landfill leachate photocatalytic treatment method based on copper oxide nanoflowers, and relates to the technical field of environmental protection. The photocatalytic treatment method for the landfill leachate comprises the following steps: S1, adjusting the landfill leachate to a preset pH value; s2, adding a copper oxide nanoflower photocatalyst prepared in advance into the adjusted landfill leachate; s3, carrying out photocatalytic reaction based on the optimized illumination condition; s4, in the reaction process, regularly stirring the solution to keep the catalyst dispersed uniformly; and S5, after the reaction is finished, separating and recycling the treated landfill leachate and the catalyst. By controlling the preset pH value of the landfill leachate and adopting an intermittent illumination technology, the problem that the catalytic efficiency is reduced due to the fact that active sites on the surface of the catalyst are easily blocked by organic matters is effectively solved, and the proper pH value is beneficial to enhancing the surface charge of the catalyst and improving the capacity of the catalyst for adsorbing organic pollutants.
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Citation Information

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