Treatment process and treatment system for landfill leachate

A technology for landfill leachate and treatment process, applied in the field of wastewater treatment, can solve the problems of increased sludge volume, high requirements on the accuracy of flocculant or coagulation aid input, achieve small sludge volume, strong impact load resistance, and reduced Effect of disposal fee

Pending Publication Date: 2022-07-12
HUNAN YUCHENG ENVIRONMENTAL PROTECTION TECHCO
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Problems solved by technology

[0005] (1) The purpose of the present invention is to provide a treatment process for landfill leachate, which solves the need to add flocculants or coagulant aids when processing landfill leachate in the prior art, resulting in an increase in the amount of sludge and the problem of flocculants or coagulant aids The problem of high input accuracy requirements

Method used

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  • Treatment process and treatment system for landfill leachate
  • Treatment process and treatment system for landfill leachate

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Embodiment Construction

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] see figure 1 and figure 2 As shown, the present invention is a process for treating landfill leachate, comprising the following steps:

[0049] S1. Extract the landfill leachate into the adjustment tank, and adjust the water quality and quantity of the landfill leachate.

[0050] S2, extracting the landfill leachate in the conditioning tank into the first electrocoagulation device, and the electrocoagulation device performs...

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Abstract

The invention discloses a treatment process and a treatment system for landfill leachate. The treatment process of the landfill leachate comprises the following steps: extracting the landfill leachate into the adjusting tank. And extracting the landfill leachate in the adjusting tank into a first electrocoagulation device for flocculation and sedimentation. Conveying the flocculated and precipitated landfill leachate into a UASB (Upflow Anaerobic Sludge Blanket) reactor to obtain a treatment solution A; conveying the treatment liquid A into a first sedimentation tank for sedimentation. Supernate in the first sedimentation tank is pumped into a two-stage A/O treatment system, and treatment liquid B is obtained. And conveying the treatment liquid B into a second sedimentation tank for sedimentation. Supernate in the second sedimentation tank is pumped into a second electrocoagulation device, and treatment liquid C is obtained. And conveying the treatment liquid C to a third-stage membrane treatment system for filtration and denitrification treatment to obtain purified water. The process is stable in operation, the amount of the generated sludge is less than that of the sludge generated by a dosing treatment process, and the treatment cost of the sludge is reduced.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment process and a treatment system for landfill leachate. Background technique [0002] With the increase of my country's urban population, the expansion of urban scale and the improvement of residents' living standards, the output of my country's urban domestic waste is increasing rapidly. According to the principle of "harmless, reduction and resource utilization" of waste disposal in my country, a large number of sanitary landfills for domestic waste will be built. Whether the landfill leachate is treated and discharged up to the standard is one of the important indicators to measure whether a landfill is a sanitary landfill. [0003] The Chinese invention patent application publication number CN113860664A discloses a process for the treatment of landfill leachate. The process is to flocculate and settle the landfill leachate by adding a flocculant or a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/44C02F1/463C02F3/28C02F3/30C02F103/06
CPCC02F9/00C02F1/463C02F1/441C02F1/442C02F1/444C02F3/2846C02F3/302C02F2301/08C02F2103/06C02F2209/42C02F2303/04Y02W10/10
Inventor 桂爱国
Owner HUNAN YUCHENG ENVIRONMENTAL PROTECTION TECHCO
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