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Combined device for synchronous denitrification and methanogenesis as well as autotrophic nitrogen removal of landfill leachate and method thereof

An autotrophic denitrification technology for landfill leachate, applied in the field of biological denitrification of wastewater with low carbon-to-nitrogen ratio and high concentration of ammonia-nitrogen, can solve the problems of insufficient organic carbon source, low C/N ratio, and low denitrification efficiency, and achieve The effects of reducing sludge production, efficient biological nitrogen removal, and reducing operating and construction costs

Active Publication Date: 2012-06-27
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 the denitrification of landfill leachate in the mid-N stage, its COD concentration is high, so it is difficult to treat directly, but at the same time, its C / N ratio is not high, and the organic carbon source is relatively insufficient, resulting in low efficiency of traditional biological denitrification

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  • Combined device for synchronous denitrification and methanogenesis as well as autotrophic nitrogen removal of landfill leachate and method thereof
  • Combined device for synchronous denitrification and methanogenesis as well as autotrophic nitrogen removal of landfill leachate and method thereof

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[0024] Below in conjunction with accompanying drawing and embodiment the patent application is further described: as figure 1 As shown, a landfill leachate synchronous denitrification methane production and autotrophic denitrification combination device, including an integrated water tank 26, synchronous denitrification methane production reactor 7, A / O short-range nitrification reactor 15, sedimentation tank 18 and anaerobic Oxygen ammonium oxidation reactor 43; integrated water tank 26 includes leachate raw water tank 1, heating water tank 2 and temperature control heating device 3; The first peristaltic pump 27 is communicated; the synchronous methanation denitrification reactor 7 is communicated with the first compartment of the A / O short-range nitrification reactor 15 as the anoxic zone through the first outlet pipe 11 and the fourth peristaltic pump 10, The cell is equipped with a stirrer 14, and the A / O short-path nitrification reactor 15 is divided into 4-8 cells with ...

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Abstract

The invention relates to a combined device for synchronous denitrification and methanogenesis as well as autotrophic nitrogen removal of landfill leachate and a method thereof. The device is provided with an integrated water tank, a synchronous denitrification and methanogenesis reactor, an A / O shortcut nitrification reactor, a settling tank, and an anaerobic ammoxidation reactor. A mixed solution of stock leachate and an effluent reflux liquid of the anaerobic ammoxidation reactor firstly flows into the synchronous denitrification and methanogenesis reactor, the effluent of which then flows into the A / O reactor for shortcut nitrification and denitrification, and the effluent of the settling tank flows into the anaerobic ammoxidation reactor. The outlet pipe of the synchronous denitrification and methanogenesis reactor is connected to the anaerobic ammoxidation reactor. The method consists of the steps of: starting the synchronous denitrification and methanogenesis reactor, starting the A / O shortcut nitrification reactor, starting the anaerobic ammoxidation reactor, and bringing the three reactors into series operation. The device of the invention is suitable for removal of COD (chemical oxygen demand) and nitrogen from early and medium term landfill leachate of landfills, and has obvious advantages of energy saving and consumption reducing.

Description

technical field [0001] The invention relates to a combined device and method for synchronous denitrification of methane and autotrophic denitrification of landfill leachate, which belongs to the technical field of biological denitrification of waste water with low carbon-to-nitrogen (C / N) ratio and high concentration of ammonia nitrogen, and is suitable for early and mid-term landfill infiltration Biological denitrification of high ammonia nitrogen wastewater with low C / N ratio such as filtrate. Background technique [0002] With the continuous increase of urban waste production and the popularization and application of waste sanitary landfill, urban landfill leachate poses an increasingly serious threat to the environment. However, the existing leachate treatment technology has problems such as low efficiency and high cost. Research and development of economical and efficient leachate treatment technology has important theoretical significance and application value. [000...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C07C9/04
Inventor 彭永臻刘牡王淑莹刘甜甜王博
Owner 北控水务(中国)投资有限公司
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