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Biological treatment method for landfill leachate

A technology for landfill leachate and landfill waste, applied in biological water/sewage treatment, contaminated groundwater/leachate treatment, chemical instruments and methods, etc., can solve the problems of complex nitrogen removal operations, achieve high removal efficiency, The effect of simple operation and small footprint

Inactive Publication Date: 2019-12-13
GUIZHOU OURUIXIN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention is to provide is a biochemical treatment method for landfill leachate to solve the problem of complex nitrogen removal operations and the need to add additional carbon sources in prior art biochemical treatment devices relying on nitrification-denitrification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: A biochemical treatment method for landfill landfill leachate, comprising the following steps, S1, transporting the landfill leachate to a regulating tank for pretreatment, preliminarily settling and separating in the regulating tank, and then adjusting the water quantity and water quality;

[0017] S2. Transport the pretreated landfill leachate from the bottom to the upflow anaerobic sludge bed reactor for biochemical treatment. The upflow anaerobic sludge bed reactor is sequentially divided into water distribution area and sludge bed reaction from bottom to top area, packing area and three-phase separation area, in which the upflow anaerobic sludge bed reactor passes heat exchange fluid into the shell of the reactor, and utilizes the principle of water bath heating to heat and keep the sludge bed reaction area warm, so that the sewage The temperature of the mud bed reaction zone was controlled at 31°C, and the anammox bacteria were inoculated in the sludg...

Embodiment 2

[0021] A biochemical treatment method for landfill leachate, comprising the following steps, S1, transporting the landfill leachate to a regulating tank for pretreatment, pre-settlement and separation in the regulating tank, and then adjusting the water quantity and water quality;

[0022] S2. Transport the pretreated landfill leachate from the bottom to the upflow anaerobic sludge bed reactor for biochemical treatment. The upflow anaerobic sludge bed reactor is sequentially divided into water distribution area and sludge bed reaction from bottom to top area, packing area and three-phase separation area, in which the upflow anaerobic sludge bed reactor passes heat exchange fluid into the shell of the reactor, and utilizes the principle of water bath heating to heat and keep the sludge bed reaction area warm, so that the sewage The temperature in the mud bed reaction zone was controlled at 33°C, and the sludge bed reaction zone was inoculated with anammox bacteria, which were de...

Embodiment 3

[0026] A biochemical treatment method for landfill leachate, comprising the following steps, S1, transporting the landfill leachate to a regulating tank for pretreatment, pre-settlement and separation in the regulating tank, and then adjusting the water quantity and water quality;

[0027]S2. Transport the pretreated landfill leachate from the bottom to the upflow anaerobic sludge bed reactor for biochemical treatment. The upflow anaerobic sludge bed reactor is sequentially divided into water distribution area and sludge bed reaction from bottom to top area, packing area and three-phase separation area, in which the upflow anaerobic sludge bed reactor passes heat exchange fluid into the shell of the reactor, and uses the principle of water bath heating to heat and insulate the sludge bed reaction area, so that the sewage The temperature of the mud bed reaction zone was controlled at 32°C, and the sludge bed reaction zone was inoculated with anammox bacteria, which were derived ...

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Abstract

The invention relates to a landfill leachate biological treatment method in the technical field of garbage treatment. The landfill leachate biological treatment method comprises the following steps: S1, conveying landfill leachate into an adjusting tank for pretreatment, carrying out preliminary sedimentation separation in the adjusting tank, and then adjusting the water quantity and the water quality; S2, conveying the pretreated landfill leachate into an up-flow anaerobic sludge bed reactor from the bottom for biochemical treatment; S3, conveying liquid obtained through biochemical treatmentinto a high-efficiency ammonia nitrogen stripping tower for ammonia nitrogen stripping; and S4, conveying the liquid treated through air stripping treatment into an inclined tube sedimentation tank,and carrying out mud-water separation on the liquid by utilizing an inclined tube filler. According to the invention, an anaerobic ammonia oxidation process is innovatively adopted; ammonia nitrogen or nitrite nitrogen is directly oxidized into nitrogen to be completely removed from a water body, a carbon source does not need to be added in the anaerobic ammonia oxidation process, operation is easy, the occupied area is small, the removal efficiency is high, the ammonia nitrogen removal rate is 98% or above, and the emission concentration of ammonia nitrogen is lower than the limit value specified by the national standard.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a biochemical treatment method for landfill leachate. Background technique [0002] Landfill leachate is a secondary pollutant associated with landfills, which mainly comes from precipitation and the water contained in the garbage itself. There are many physical factors, chemical factors and biological factors in the process of liquid flow that may affect the properties of leachate, such as: garbage composition properties, landfill structure, landfill method, age of landfill, rainfall and rainwater The impact of runoff, landfill time, landfill method, and landfill surface conditions; therefore, the properties of leachate vary within a considerable range. Landfill leachate has complex components, high pollutant concentration, large chroma, and strong toxicity. It not only contains a large amount of organic pollutants, but also contains various heavy metal pollutants. It...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/16C02F103/06
CPCC02F1/20C02F3/2846C02F9/00C02F2001/007C02F2101/16C02F2101/166C02F2103/06
Inventor 刘滨刘伟
Owner GUIZHOU OURUIXIN ENVIRONMENTAL PROTECTION TECH
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