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Landfill leachate treatment method

A technology of landfill leachate and treatment methods, which is applied in the field of high-concentration wastewater treatment, can solve problems such as increasing production capacity, and achieve the effects of increasing production capacity, reducing energy consumption, and reducing costs

Active Publication Date: 2018-03-27
CHINA ENFI ENGINEERING CORPORATION
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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 implementation 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: 1042–1395 mg / L, TN: 1330–2179 mg / L, SS: 8000–10000 mg / L.

[0051] Wherein, 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, reflecting the degree of contamination of the water by reducing substances, and can be used as a comprehensive measure of the relative content of organic substances. The larger 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 uses the amount of dissolved oxygen consumed by microbial metabolism to indirectly indicate the degree of water body pollution by organic m...

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Abstract

The invention provides a landfill leachate treatment method, which comprises the steps: landfill leachate to be treated is sent into a microbial electrolysis cell reactor to undergo microbial electrochemical reaction; effluent after the microbial electrochemical reaction is sent into an anoxic denitrification reactor to undergo anoxic denitrification reaction; effluent after the anoxic denitrification reaction is sent into a partial nitrification reactor to undergo partial nitrification reaction; effluent after the partial nitrification reaction is sent into an anaerobic ammonia oxidation reactor to undergo anaerobic ammonia oxidation reaction; after being sequentially reacted and treated by the steps, the landfill leachate is directly drained. The landfill leachate treatment method disclosed by the invention can remove organic pollutions of the landfill leachate in high efficiency and denitrify in high efficiency, so that the treated landfill leachate can stably reach the standard. Inaddition, when the technology disclosed by the invention is utilized to treat the landfill leachate, operation energy consumption and later sludge treatment cost are further saved.

Description

technical field [0001] The invention relates to a treatment method for landfill leachate, which is suitable for landfill leachate treatment and belongs to the field of high-concentration waste water treatment. Background technique [0002] In recent years, the annual output of domestic waste in cities has increased sharply at a rate of 8% to 10%. There are two main ways of traditional domestic waste disposal, landfill or incineration for power generation. Landfill or compost fermentation before incineration will produce a large amount of landfill leachate. Due to the complex components of domestic waste, large fluctuations in moisture content, and the uncertainty of environmental conditions (composting temperature, composting time, air humidity, precipitation, regional conditions, etc.) The leachate composition is complex and contains a variety of organic pollutants with a wide range of changes, and different seasons will affect the leachate of waste incineration. General...

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Application Information

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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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