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Landfill Leachate Treatment System

A landfill leachate and treatment system technology, which is applied in the field of landfill leachate treatment systems, can solve problems such as large chroma, difficulty in achieving standard discharge with advanced oxidation technology, and complex pollutant components, so as to achieve good treatment effect and reduce one-time investment , the effect of compact structure

Active Publication Date: 2021-07-27
华夏碧水环保科技股份有限公司北京分公司
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Problems solved by technology

[0006] The advanced oxidation process uses the strong oxidizing properties of chemical substances to oxidize and decompose the refractory organic substances in sewage. There are technologies such as Fenton oxidation and ozone oxidation, which have the characteristics of strong oxidizing property and fast reaction speed, but in practical applications , due to the complex composition and large chroma of landfill leachate pollutants, it is difficult to achieve standard discharge with a single advanced oxidation technology

Method used

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  • Landfill Leachate Treatment System
  • Landfill Leachate Treatment System
  • Landfill Leachate Treatment System

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specific Embodiment approach

[0059] In a specific embodiment, the design treatment water volume is 200m 3 / d, influent COD50000-60000 mg / L, total nitrogen 2000-3000 mg / L, ammonia nitrogen 1500-2000 mg / L, effluent implements "Standards for Pollution Control of Domestic Garbage Landfill Sites", requiring COD 100mg / L, ammonia nitrogen 25 mg / L, total nitrogen 40 mg / L. The specific implementation is as follows:

[0060] The generated landfill leachate flows to the pre-sedimentation tank by itself, and the design capacity of the pre-settling tank is 20,000m 3 , the residence time is more than 3 months, and the effluent from the pre-sedimentation tank is pumped into the double-stage nitrification-denitrification system. The nitrification tank and the denitrification tank are equipped with a submersible mixer, and the nitrification tank is equipped with an automatic sodium acetate dosing device, and a nitrate nitrogen monitor is installed at the inlet and outlet respectively. According to the total nitrogen rem...

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Abstract

The invention discloses a landfill leachate treatment system, which includes a pre-sedimentation tank, a two-stage nitrification-denitrification system, a membrane bioreaction tank, a Fenton fluidized bed, a high-density sedimentation tank and an ozone reaction tank. The pre-settling tank is used for treating The landfill leachate is used to adjust water quality, water volume, temperature and pH; the two-stage nitrification-denitrification system is used to denitrify, dephosphorize, and degrade organic pollutants from the pre-sedimented landfill leachate; The landfill leachate entering the pool is filtered; the Fenton fluidized bed is used to remove refractory organic matter in the landfill leachate entering it; the high-density sedimentation tank is used for coagulation, precipitation and concentration of the landfill leachate entering it ; The ozone reaction tank is used to remove organic pollutants and color in the landfill leachate entering it. With a small footprint and compact structure, the above technologies are organically combined to ensure that the entire landfill leachate treatment system operates stably and discharges up to standards.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a landfill leachate treatment system. Background technique [0002] The landfill leachate mainly comes from the high-concentration harmful waste liquid formed by the waste itself containing water or the water generated during the degradation process, plus precipitation, groundwater, and surface water during the landfill process. It has complex pollutant components, large fluctuations in water quality, and organic pollution. It has the characteristics of high substance concentration, high ammonia nitrogen concentration, deep color, strong odor, high heavy metal ion concentration and salt content, and strong toxicity. If it cannot be properly disposed of, it will cause serious pollution to the water environment, atmospheric environment and soil environment, and endanger human health. The existing landfill leachate treatment processes include biological treatment proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/28C02F3/30C02F3/34C02F1/78
CPCC02F1/78C02F3/28C02F3/2833C02F3/30C02F3/34C02F9/00
Inventor 张传兵代振飞赵曙光孙振洲寇刘秀牛瑞胜刘雄飞张丁丁侯亚平邵建彬于玺高维超朱世鹏腾涛
Owner 华夏碧水环保科技股份有限公司北京分公司
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