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Integrative bioreactor for treating refuse leachate

A bioreactor and landfill leachate technology applied in the field of environmental protection to achieve high denitrification efficiency, less land occupation, and compact process layout

Inactive Publication Date: 2007-08-15
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems faced by existing treatment facilities, combine nitrification and anaerobic ammonium oxidation technology, and propose an integrated bioreactor that can stably and efficiently treat landfill leachate

Method used

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  • Integrative bioreactor for treating refuse leachate
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  • Integrative bioreactor for treating refuse leachate

Examples

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Embodiment 1

[0069] Please refer to attached picture 1.

[0070] Landfill leachate is used as wastewater treatment. The entire technological process has been running continuously and stably for nearly four months, and the treatment effect of the reactor is as follows:

[0071] Ammonia nitrogen (NH 4 -N) influent concentration: 1282.9mg / L, effluent concentration: 108.6mg / L, removal rate: 91.5%; TN influent concentration: 1424.6mg / L, effluent concentration: 260.1mg / L, removal rate: 81.6 %; CODcr influent concentration: 1035.5mg / L, effluent concentration: 279mg / L, removal rate: 73%.

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Abstract

The invention relates to an integral bioreactor for garbage percolating liquid treatment, belonging to environment protection art. The bioreactor comprises of two biological reaction zones and an adjustment zone, and each biological reaction zone is filled with biological filler to make up aerobic and anaerobic zone. In the aerobic zone, the organics is degraded by aerobic heterotrophic bacteria to organic carbon and controls the ammonia nitrogen nitration in hitrosation stage, 50% ammonia nitrogen is oxygenated to nitrite, and the water outlet in the aerobic zone is mixed uniformly in the adjustment zone with PH modifier and then flows into the anaerobic zone. In the anaerobic zone, anaerobic ammonia-oxidizing bacteria reduces nitrite with ammonia nitrogen as electron donor and oxygenizes ammonia nitrogen with nitrite as electron acceptor, ammonia nitrogen and nitrous nitrogen transit into nitrogen, some organics is absorbed or degraded by other anaerobic microorganism. It can clear ammonia nitrogen and organics in the water quality of low carbon-nitrogen ratio of garbage percolating liquid, and adjust the water quality of garbage percolating liquid and the impact load of water, and the operation is effective and stable.

Description

technical field [0001] The invention relates to the technical field of environmental protection, and relates to an integrated bioreactor, in particular to a bioreactor for treating landfill leachate. Background technique [0002] Landfill leachate is a kind of high-concentration ammonia-nitrogen wastewater that is harmful and difficult to treat. It contains a variety of pollutants, the main water quality characteristics: high concentration of ammonia nitrogen, and the ratio of carbon and nitrogen (C / N) imbalance; BOD 5 The / CODcr ratio varies greatly, and the time and geographical variability of water quality and quantity. At present, the main technologies for treating leachate at home and abroad include biological treatment and physical and chemical treatment. Although physical and chemical treatment technology has a good treatment effect, it is expensive, energy-consuming, and prone to secondary pollution. Biological treatment technology has the advantages of economy and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 梁祝刘俊新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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