Device and method for autotrophy advanced nitrogen removal biological treatment of mature landfill leachate

A technology for landfill leachate and autotrophic denitrification, which is applied in the field of biological denitrification of landfill leachate with low carbon to nitrogen ratio and high concentration of ammonia nitrogen in late stage, can solve the problems of high treatment energy consumption and poor effluent stability, and achieves simple operation and simple device. , the effect of reducing construction costs

Active Publication Date: 2015-11-11
BEIJING UNIV OF TECH
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Problems solved by technology

[0007] Purpose of the present invention is exactly for the high NH of existing late landfill leachate + , low C/N, high treatment energy consumpti...

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  • Device and method for autotrophy advanced nitrogen removal biological treatment of mature landfill leachate
  • Device and method for autotrophy advanced nitrogen removal biological treatment of mature landfill leachate
  • Device and method for autotrophy advanced nitrogen removal biological treatment of mature landfill leachate

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0026] Such as figure 1 As shown, the present invention provides a deep denitrification device for late-stage landfill leachate, which includes a raw water tank 1 and an integrated autotrophic denitrification SBR reactor 14 . The raw water tank is provided with a first overflow pipe 2, a first vent valve 3, and an agitator 8, a heating rod 9, a temperature control box 4, an aeration sand head 11, and an integrated autotrophic denitrification SBR reactor are provided. Water inlet 17, water outlet 13, second overflow pipe 12, second vent valve 15, on-line pH, DO detection equipment 16.

[0027] The raw water tank 1 is connected to the integrated autotrophic denitrification SBR reactor 14 through the water inlet pump 5; one side of the integrated autotrophic denitrification SBR reactor 14 is provided with a water inlet 17, and the other side is provided with a ...

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Abstract

The invention belongs to the technical field of landfill leachate biological nitrogen removal and relates to a device and method for advanced nitrogen removal of mature landfill leachate. The device is provided with a raw water tank and an integrated autotrophy nitrogen removal SBR reactor. The integrated autotrophy nitrogen removal SBR reactor is internally provided with a heating device, a stirring device and an aeration device. The method comprises the following steps: the mature landfill lachate is driven into the integrated autotrophy nitrogen removal SBR reactor by a peristaltic pump to enable the dissolved oxygen of the reactor to be from 0.1 to 0.5 mg/L at the aeration stage through the control of the aeration rate so as to achieve short-range nitration-anaerobic ammoxidation; and nitrite nitrogen generated by the short-range nitration can be timely utilized by anaerobic ammonium oxidation bacteria through an operation method of circulating intermittent aeration of aeration/anaerobic stir to enable the nitrite nitrogen residue not to remain in the reactor. The mature landfill leachate advanced nitrogen removal device is applicable to the treatment of the mature landfill leachate, and the purpose of the mature landfill leachate advanced nitrogen removal is achieved without any addition of external carbon source conditions.

Description

technical field [0001] The invention relates to a biological treatment device and method for autotrophic deep denitrification of late-stage landfill leachate, which belongs to the technical field of biological denitrification of late-stage landfill leachate with low carbon-to-nitrogen ratio and high concentration of ammonia nitrogen, and is suitable for low C / N of late-stage landfill leachate, etc. Biological denitrification of high ammonia nitrogen wastewater. Background technique [0002] In recent years, with the increasing output of municipal solid waste, landfilling has gradually become the most widely used treatment and disposal method in the world. If the landfill leachate is not taken effective measures to control, it will seriously pollute the surface water or ground water. Due to the water quality characteristics of landfill leachate, such as complex composition, large changes in water quality and quantity, high concentration of organic matter and ammonia nitrogen...

Claims

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Application Information

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IPC IPC(8): C02F3/30
Inventor 王淑莹张方斋苗蕾曹天昊王众苗圆圆
Owner BEIJING UNIV OF TECH
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