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Device and method for combined denitrification of anoxic-oxic (A/O) shortcut nitrification and anaerobic ammonia oxidation of late-stage landfill leachate

A technology of anaerobic ammonium oxidation and landfill leachate, which is applied in late stage landfill leachate A/O and anaerobic ammonium oxidation combined denitrification device, in the field of biological denitrification of high ammonia nitrogen wastewater, can solve the problem of insufficient organic carbon sources, etc. Achieve the effects of reducing sludge production, efficient biological denitrification, and reducing energy consumption

Active Publication Date: 2013-11-06
北控水务(中国)投资有限公司
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Problems solved by technology

But for high NH 4 + For denitrification of landfill leachate in late-N stage, the C / N ratio is only about 1. Due to the serious shortage of organic carbon sources, the efficiency of traditional biological denitrification can only reach about 10%.

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  • Device and method for combined denitrification of anoxic-oxic (A/O) shortcut nitrification and anaerobic ammonia oxidation of late-stage landfill leachate

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and embodiment the patent application is further described: as figure 1 As shown, late-stage landfill leachate A / O and anaerobic ammonium oxidation combined denitrification device and method, the device is equipped with leachate raw water tank 1, A / O short-range nitrification reactor 7, sedimentation tank 9, anammox Reactor 15; leachate raw water tank 1 is provided with a heating water tank 28 and a temperature-controlled heating device 2 in the middle, and the upper supernatant of the anaerobic ammonium oxidation reactor 15 passes through the first return pipe 30 and the fourth peristaltic pump 21 and the leachate raw water tank The leachate in 1 is mixed, and then through the second water inlet pipe 31 of the A / O short-path nitrification reactor 7 and the first peristaltic pump 3, it is connected with the first chamber of the A / O short-path nitrification reactor 7 as an anoxic zone, The first grid room is equipped with ag...

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Abstract

The invention relates to a device and method for combined denitrification of anoxic-oxic (A / O) shortcut nitrification and anaerobic ammonia oxidation of late-stage landfill leachate, which belongs to the technical field of biological denitrification of low carbon-to-nitrogen ratio high-ammonia-nitrogen-concentration landfill leachate. The device is provided with a leachate original water tank, an A / O shortcut nitrification reactor, a settlement tank, and an anaerobic ammonia oxidation reactor. The leachate original water tank is connected to a first chamber, as an anaerobic area, of the A / O shortcut nitrification reactor, the settlement tank is connected to the anaerobic ammonia oxidation reactor, the anaerobic ammonia oxidation reactor is provided with a self-circulation pipe and an effluent return pipe, and the effluent from the effluent return pipe returns to the A / O shortcut nitrification reactor. The method comprises starting the A / O shortcut nitrification reactor, starting the anaerobic ammonia oxidation reactor, allowing the A / O shortcut nitrification reactor and the anaerobic ammonia oxidation reactor to operate serially, and diluting raw leachate by circulating the effluent from the anaerobic ammonia oxidation reactor. The inventive device and method are suitable for shortcut nitrification and denitrification of late-stage landfill leachate of landfills, and have remarkable effects on saving energy and reducing consumption. The method is advanced. The device has simple structure.

Description

technical field [0001] The invention relates to a combined denitrification device and method for late-stage landfill leachate A / O and anaerobic ammonium oxidation, which belongs to the technical field of biological denitrification of waste water with low carbon-to-nitrogen (C / N) ratio and high-concentration ammonia-nitrogen, and is suitable for late-stage landfill leachate Biological denitrification of high ammonia nitrogen wastewater with low C / N ratio. 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. The leachate produced by landfill has the characteristics of complex composition, large changes in water quality and quantity, high concentration of organic matter and ammonia nitrogen, and imbalance of microbial nutrient elements, making its treatment one of the unsolved problems in the international scope. It is often impossibl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 彭永臻刘甜甜王淑莹刘牡王博
Owner 北控水务(中国)投资有限公司
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