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A treatment method for landfill leachate

A technology of landfill leachate and treatment method, which is applied in the field of high-concentration wastewater treatment and can solve problems such as increasing production capacity

Active Publication Date: 2021-05-28
CHINA ENFI ENGINEERING CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a treatment process for landfill leachate in view of the complex characteristics of landfill leachate and the deficiencies of the prior art, which can save cost, increase capacity and reduce energy consumption

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Embodiment Construction

[0050] The waste incineration leachate used in the specific embodiment of this application comes from a waste incineration power plant in Beijing, and its water quality indicators are as follows: COD: 40240-80480mg / L, BOD 5 : 22870–50350mg / L, NH 4 +-N: 1042-1395mg / L, TN: 1330-2179mg / L, SS: 8000-10000mg / L.

[0051] Among them, the chemical oxygen demand (COD) is a chemical method to measure the amount of reducing substances that need to be oxidized in the water sample, which reflects the degree of pollution in the water by reducing substances, and can be used as a comprehensive measure of the relative content of organic substances. The higher the value, the more serious the pollution of the water body; the biochemical oxygen demand (BOD 5 ) generally refers to the five-day biochemical oxygen demand, which is an important indicator that indirectly indicates the degree of water pollution by organic matter by the amount of dissolved oxygen consumed by microbial metabolism. The ...

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Abstract

The invention provides a method for treating landfill leachate, which comprises: the landfill leachate to be treated enters a microbial electrolytic cell reactor for microbial electrochemical reaction; the effluent after the microbial electrochemical reaction enters an anoxic denitrification reactor for Anoxic denitrification reaction; the effluent after the anoxic denitrification reaction enters the short-range nitrification reactor for short-range nitrification reaction; the effluent after the short-range nitrification reaction enters the anaerobic ammonium oxidation reactor for anaerobic ammonium oxidation reaction; the garbage seepage The leachate is directly discharged after the above-mentioned steps have been reacted and processed successively. The method for treating landfill leachate provided by the invention can efficiently remove organic pollutants and denitrify the landfill leachate, so that the treated landfill leachate can reach the standard stably. In addition, using the process of the present invention to treat landfill leachate can also save energy consumption in operation and treatment cost of later sludge.

Description

technical field [0001] The invention relates to a method for treating landfill leachate, which is suitable for landfill leachate treatment and belongs to the field of high-concentration wastewater treatment. Background technique [0002] In recent years, the annual domestic waste production in cities has increased sharply at a rate of 8% to 10%. There are two main ways to treat domestic waste, landfill or incineration to generate electricity. Fermentation before landfill or incineration produces large amounts of landfill leachate. Due to the complex components of domestic waste, the fluctuation of moisture content is large, and the environmental conditions (compost fermentation temperature, fermentation time, air humidity, precipitation, regional conditions, etc.) The liquid composition is complex, contains a variety of organic pollutants, and varies widely, and different seasons will affect the leachate of waste incineration. Generally speaking, landfill leachate has the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/06
CPCC02F3/005C02F3/28C02F3/302C02F9/00C02F2103/06
Inventor 高严赵永志田丽森赵金聂宜文
Owner CHINA ENFI ENGINEERING CORPORATION
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