Medical sewage treatment method for synergistically removing new pollutants and pathogenic microorganisms

By using a combination of reagents and a direct current electric field, the problem of removing new pollutants and pathogenic microorganisms from medical wastewater has been solved, achieving deep purification and low-cost wastewater treatment.

CN121717531AActive Publication Date: 2026-03-24SICHUAN ACAD OF ENVIRONMENTAL SCI
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Patent Information

Application Number
CN202610218222.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-24
Publication Date
2026-03-24
Estimated Expiration
2046-02-24

AI Technical Summary

Technical Problem

Existing medical wastewater treatment processes are unable to effectively remove new pollutants with stable chemical structures, such as antibiotics and endocrine disruptors, and have limited effectiveness in inactivating pathogenic microorganisms, leading to ecological and environmental risks.

Method used

The method employs the synergistic effect of composite agents and a direct current electric field. By adding inorganic flocculants, composite agents, sodium chloride, sodium bromide, surfactants, pH buffers, composite corrosion inhibitors, and anti-caking agents to medical wastewater, a strong oxidizing component is generated. This mineralizes and decomposes organic matter and kills pathogens. Combined with biochemical treatment, ammonia nitrogen and small molecule organic matter are removed.

Benefits of technology

It achieves deep mineralization and decomposition of new pollutants and efficient inactivation of pathogenic microorganisms, reduces reagent costs, minimizes the risk of secondary pollution, adapts to complex wastewater quality, and improves treatment efficiency.

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Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a medical sewage treatment method for synergistically removing new pollutants and pathogenic microorganisms, which comprises the following steps: S1, pretreatment: putting an inorganic flocculant into medical sewage to promote the aggregation and precipitation of suspended particles and colloids in the medical sewage; s2, oxidation treatment: a composite agent is put into the pretreated medical sewage, a direct-current electric field is applied at the same time, the composite agent comprises potassium monopersulfate composite salt, sulfamic acid, sodium chloride, sodium bromide, a surfactant, a pH buffer agent, a composite corrosion inhibitor, an anti-blocking agent and anhydrous sodium sulfate, strong-oxidizing components are generated after the composite agent is dissolved, and the strong-oxidizing components are added into the pretreated medical sewage; organic matters are mineralized and decomposed, and pathogens are killed; s3, biochemical treatment: carrying out biochemical treatment on the medical sewage subjected to oxidation treatment to remove ammonia nitrogen and small molecular organic matters. According to the invention, various new pollutants can be effectively decomposed, pathogenic microorganisms are inactivated, and the treatment effect is improved.
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