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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 ammonia-nitrogen, can solve problems such as insufficient organic carbon sources, low denitrification efficiency, and low C/N ratio. Effects of reducing sludge production, reducing operation and construction costs, and high-efficiency biological nitrogen removal

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 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

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[0024] Below in conjunction with accompanying drawing and embodiment, the patent of the present application is further described: as figure 1 As shown in the figure, a landfill leachate synchronous denitrification methane production and autotrophic denitrification combined device includes an integrated water tank 26, a synchronous denitrification methane production reactor 7, an A / O short-path nitrification reactor 15, a sedimentation tank 18 and an The oxygen ammonia oxidation reactor 43; the integrated water tank 26 includes the leachate original water tank 1, the heating water tank 2 and the temperature control heating device 3; The first peristaltic pump 27 communicates with each other; the synchronous denitrification methanogenesis reactor 7 communicates with the first compartment of the A / O short-range nitrification reactor 15 as the anoxic zone through the first water outlet 11 and the fourth peristaltic pump 10, The cell is equipped with a stirrer 14, and the A / O short...

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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 simultaneous denitrification and methane production and autotrophic denitrification of landfill leachate, belongs to the technical field of biological denitrification of low-carbon nitrogen (C / N) ratio and high-concentration ammonia nitrogen wastewater, and is suitable for early and mid-term landfill seepage Biological denitrification of high ammonia nitrogen wastewater with low C / N ratio such as filtrate. Background technique [0002] With the continuous increase of municipal waste production and the popularization and application of sanitary landfill, municipal landfill leachate poses an increasingly serious threat to the environment. However, the existing leachate treatment technology has problems of low efficiency and high cost. Research and development of economical and efficient leachate treatment technology has important theoretical significance and application value. [0003] Biological...

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Application Information

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Patent Type & Authority Patents(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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