Device and method for treating late-stage landfill leachate by short-range nitrification/anaerobic ammonium oxidation/short-range denitrification-anaerobic ammonium oxidation process
A technology of anaerobic ammonia oxidation and landfill leachate, which is applied in the field of biological treatment of high ammonia nitrogen sewage sludge, can solve the problems of substandard effluent, and achieve the effect of less carbon source consumption, saving treatment cost and saving carbon source addition.
Active Publication Date: 2021-10-26
BEIJING UNIV OF TECH
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However, the large amount of nitrate nitrogen produced by the anaerobic ammonium oxidation process is the main reason for the effluent not reaching the standard.
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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] The device for treating late-stage landfill leachate by short-range nitrification / anaerobic ammonium oxidation / short-range denitrification-anammox process is characterized in that it includes a raw water tank (1), a short-range nitrification reactor (PN-SBR) (2), a second One intermediate water tank (3), anaerobic ammonium oxidation reactor (AMX-SBR) (4), second intermediate water tank (5), external carbon source storage tank (6.5), short-range denitrification-anammox oxidation reactor ( DEAMOX-UASB)(6);
[0026]The raw water tank is provided with a first (1.1), a second water outlet (1.2); the PN-SBR is provided with an air compressor (2.1), a gas flow meter (2.2), an aeration sand head (2.9), a first water inlet (2.4), first sampling port (2.7), first water outlet (2.8), first agitator (2.5), first water inlet peristaltic pu...
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The invention relates to a device and a method for treating late-stage landfill leachate by a short-range nitrification / anaerobic ammonium oxidation / short-range denitrification-anammox process, belonging to the field of biological treatment of high ammonia nitrogen sewage sludge. The late landfill leachate first enters the PN‑SBR, and the ammonia nitrogen in the influent is completely oxidized to nitrite nitrogen; the effluent containing nitrite nitrogen enters the AMX‑SBR together with a part of the late landfill leachate for denitrification through anaerobic ammonium oxidation; The nitrate nitrogen AMX‑SBR effluent is pumped into the DEAMOX‑UASB reactor together with another part of the late landfill leachate and an external carbon source. The nitrate nitrogen is first reduced to nitrite nitrogen by short-range denitrification bacteria, and then undergoes anaerobic ammonium oxidation. The effect is completed for further deep removal; this invention proposes a new type of biological denitrification process, which solves the problems of low denitrification efficiency of late landfill leachate and high TN of effluent, and reduces the consumption of additional carbon sources; the process is flexible and easy to control, suitable for For the deep removal of high ammonia nitrogen wastewater.
Description
technical field [0001] The invention relates to a device and a method for treating late-stage landfill leachate by a short-range nitrification / anammox / short-range denitrification-anammox process, 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 converted to NO 3 - -N, and NO by denitrification 3 - -N is converted to nitrogen gas which escapes from the water. NO ...
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IPC IPC(8): C02F3/30C02F101/16C02F103/06
Inventor 彭永臻张方斋王众姜浩
Owner BEIJING UNIV OF TECH