All-quantitative treatment system and method for aged landfill leachate

By designing a full-quantification treatment system for aging waste leachate that includes multi-stage treatment technology and sludge resource utilization, the problem of difficult waste leachate concentrate in the prior art is solved, and a stable and efficient leachate treatment effect is achieved.

CN120208444APending Publication Date: 2025-06-27SINOSTEEL WUHAN SAFEY&ENVIRONMENT PROTECTION RES
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Patent Information

Application Number
CN202311751874.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-12-19
Publication Date
2025-06-27

AI Technical Summary

Technical Problem

The prior art is difficult to effectively treat the concentrate in the garbage leachate, and there are problems such as high operation requirements, high processing costs and complex processes, which makes it difficult to promote and apply on a large scale.

Method used

Provide a full quantification treatment system for leachate in aging, including a pretreatment reactor, a precipitation tank, a two-stage MBR device, a microelectrolysis reactor, a Fenton reactor, a dynamic membrane bioreactor, an adsorption Fenton device, etc. Through multi-stage treatment processes and sludge resource utilization, the full quantification treatment of leachate is realized.

Benefits of technology

Effectively remove CODCr, BOD5, SS, ammonia nitrogen, total nitrogen, total phosphorus and colorimetry in the garbage leachate. The treatment effect is stable, no concentrated liquid is generated, the operating cost is low, the water quality of the water meets the emission standards, and the full quantification of the leachate is achieved.

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Abstract

The invention discloses a full-quantitative treatment system and a full-quantitative treatment method for aged landfill leachate. Comprising a pretreatment reactor (10), a sedimentation tank (11), a two-stage MBR device, a micro-electrolysis reactor, a Fenton reactor, a reaction sedimentation tank, a dynamic membrane bioreactor, an adsorption Fenton device and a water producing tank, a water outlet (9) of the pretreatment reactor is connected with a water inlet pipe (14) of the mixing tank; a water outlet (22) of the sedimentation tank is connected with a water inlet pipe (32) of the primary MBR device; a water outlet of the micro-electrolysis reactor is connected with a water inlet of the Fenton reactor, a water outlet of the Fenton reactor is connected with a water inlet of the reaction sedimentation tank, and a water outlet of the reaction sedimentation tank is connected with a water inlet pipe of the dynamic membrane bioreactor. CODCr, BOD5, SS, ammonia nitrogen, total nitrogen, total phosphorus and chromaticity in the landfill leachate can be effectively removed, no concentrated solution is generated, secondary pollutants are few, the quality of produced water meets the emission standard, and full-quantitative treatment of the leachate is achieved.
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