Intermittent aeration integration/short-range denitrification-ANAMMOX device and method for late-stage landfill leachate treatment
A technology of anaerobic ammonium oxidation and short-range denitrification, which is applied in the field of deep denitrification of late-stage landfill leachate, can solve problems such as large changes in water quality and quantity, imbalance of ammonia nitrogen concentration, microbial nutrient element ratio, and complex composition, and achieve nitrogen The effect of high removal load, fast reaction rate and simple operation
Active Publication Date: 2021-10-22
BEIJING UNIV OF TECH
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[0004] At present, intermittent aeration short-range nitrification-anammox / short-range denitrification-anammox technology has never been applied to the treatment of late-stage landfill leachate with complex components, large changes in water quality and quantity, high ammonia nitrogen concentration, and imbalanced ratio of microbial nutrients.
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] Intermittent aeration short-range nitrification-anammox / short-range denitrification-anammox treatment device for late-stage landfill leachate, including raw water tank (1), short-range nitrification / anammox reactor (2), intermediate water tank ( 3), external carbon source storage tank (4.3) and short-range denitrification / anammox reactor (4);
[0025]The raw water tank is provided with first and second water outlets; the short-range nitrification / ANAMMOX reactor is provided with an air compressor (2.1), a gas flow meter (2.2), an aeration sand head (2.3), a first Water inlet (2.5), first sampling port (2.9), first water outlet (2.10), first agitator (2.7), first water inlet peristaltic pump (2.4), pH / DO real-time monitoring device (2.8), The first ORP real-time monitoring device (2.6); the short-range denitrification / anammox i...
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The device and method for intermittent aeration integration / short-range denitrification-anammox treatment of late landfill leachate belong to the field of landfill leachate biological denitrification. Late landfill leachate is pumped into the short-cut nitrification / anammox reactor by peristaltic pump. By controlling the amount of aeration, the dissolved oxygen in the reactor is 0.1-0.5mg / L during the aeration stage, realizing the short-cut nitrification / anammox reaction . Through the operation mode of aeration / anoxic stirring...aeration / anoxic stirring cycle intermittent aeration, the nitrite nitrogen produced by short-range nitrification can be used by anammox bacteria in time, aeration for 30 minutes, anoxic stirring when the pH When the first derivative of the curve is less than 0.3, stop stirring; the effluent of the short-range nitrification / anammox reactor containing nitrate nitrogen is pumped into the short-range denitrification / anammox reactor at the same time as another part of late landfill leachate and external carbon source , nitrate nitrogen is first reduced to nitrite nitrogen by short-range denitrifying bacteria, and then further deep removal is completed through anaerobic ammonium oxidation.
Description
technical field [0001] The invention relates to a device and a method for realizing deep denitrification of late-stage landfill leachate, and belongs to the field of biological treatment of high-ammonia-nitrogen sewage sludge. 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. The traditional biological denitrification process converts NH 4 + -N translates to N0 3 - -N, and then denitrify the N0 3 - -N is converted to nitrogen gas which escapes from the water. In the denitrification stage, N0 3 - -N is an electron acc...
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IPC IPC(8): C02F3/30C02F103/06C02F101/16
Inventor 彭永臻张方斋王众姜浩
Owner BEIJING UNIV OF TECH