Device and method for treating late-stage landfill leachate by short-range nitrification-fermentation/denitrification-anammox process
A technology of anaerobic ammonium oxidation and landfill leachate, which is applied in the field of short-range nitrification-fermentation/denitrification-anaerobic ammonium oxidation process to treat late-stage landfill leachate, can solve the problems of increasing the nitrogen load of sewage treatment and operating energy consumption, and achieves Avoid NOB growth, achieve deep denitrification treatment, and avoid energy waste
Active Publication Date: 2021-11-26
BEIJING UNIV OF TECH
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Problems solved by technology
However, the fermentation process of excess sludge is accompanied by the release of a large amount of ammonia nitrogen. If the sludge digestion liquid is returned to the sewage treatment plant without treatment, it will greatly increase the nitrogen load of sewage treatment and operating energy consumption.
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[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] Such as figure 1 As shown, the short-range nitrification-fermentation / denitrification-anammox process device for treating late-stage landfill leachate is characterized in that it includes a raw water tank (1), a short-range nitrification reactor (2), a first intermediate water tank (3) , excess sludge storage tank (4), fermentation coupled denitrification reactor (5), second intermediate water tank (6), anammox reactor (7);
[0026]The raw water tank is provided with an overflow pipe and a water outlet; the short-path nitrification reactor (2) 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), the first sampling port (2.9), the first drain port (2.10), the first agitator (2.7), the first water inlet peristaltic pump (2.4), pH / DO real-time monitoring device ...
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The invention relates to a device and method for treating late-stage landfill leachate by a short-range nitrification-fermentation / denitrification-anammox process, which belongs to the field of biological treatment of high-ammonia nitrogen sewage sludge. Late landfill leachate first enters the short-path nitrification reactor to convert all the influent ammonia nitrogen into nitrite nitrogen; 92.6% of the short-path nitrification effluent enters the fermentation-coupled denitrification reactor together with the remaining sludge to realize the simultaneous denitrification and residual sludge digestion The effluent is then mixed with the remaining 7.4% short-cut nitrification effluent into the anaerobic ammonium oxidation reactor, so that the ammonia nitrogen released during the fermentation process and the nitrite nitrogen produced by the short-cut nitrification are further removed. The invention realizes the deep denitrification of landfill leachate with low C / N ratio and simultaneously completes the reduction of residual sludge.
Description
technical field [0001] The invention relates to a short-range nitrification-fermentation / denitrification-anammox process technology for treating late-stage landfill leachate, which 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 denitrificatio...
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IPC IPC(8): C02F3/28C02F101/16C02F103/06
CPCC02F3/28C02F2101/16C02F2103/06
Inventor 彭永臻张方斋王众姜浩
Owner BEIJING UNIV OF TECH