Method for coupling anaerobic ammonia oxidation with landfill leachate MBR biochemical system
A landfill leachate and anaerobic ammonium oxidation technology, which is applied in the field of landfill leachate treatment, can solve the problems of a large amount of energy consumption for aeration, and achieve the effect of saving energy consumption required for nitrification and saving dosing costs
Active Publication Date: 2021-07-13
北京国环莱茵环保科技股份有限公司
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Problems solved by technology
[0003] At present, the treatment of landfill leachate generally adopts pretreatment, UASB / IC / UB anaerobic fermentation to remove about 80% of COD, and then connects an external MBR biochemical treatment system to further remove COD, ammonia nitrogen, TN and SS, and then accepts the filter membrane The soluble COD not removed by the biochemical system is further concentrated and removed, and finally connected to RO reverse osmosis to recover clean water, and the DTRO system further reduces the previous RO concentrated water. Among them, the external MBR biochemical treatment system generally includes a first-stage denitrification tank, a first-stage Nitrification tanks, secondary denitrification tanks, secondary nitrification tanks and external tubular membrane systems; however, due to the active pollution dominant bacteria in the denitrification process are heterotrophic bacteria, a large amount of biodegradable COD is consumed in the denitrification process Carbon source, especially because the removal rate of easy COD in the influent is even 80% in the front UASB / IC / UBF anaerobic fermentation section with limited removal of ammonia nitrogen and TN, resulting in the denitrification tank behind, In particular, the biodegradable COD required for the denitrification of the secondary denitrification tank to remove nitrate nitrogen is seriously insufficient, and a large amount of external carbon source is required to remove TN; on the other hand, the nitrification process of high ammonia nitrogen also requires a large amount of exposure Gas consumption
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[0024] The present invention will be further described below in conjunction with the accompanying drawings.
[0025] Such as figure 2 shown.
[0026] A method for anaerobic ammonium oxidation coupling landfill leachate MBR biochemical system, which includes a primary denitrification tank 3, a primary nitrification tank 4, a secondary denitrification tank 5, a secondary nitrification tank 6, and a side stream denitrification tank 7 , side stream IFAS anaerobic ammonium oxidation tank 8, external ultrafiltration system concentrated liquid return inlet 9, first-level nitrification liquid return inlet 10, first-level denitrification tank agitator 11, first-level nitrification jet aerator 14, first-level Nitrification jet pump outlet valve 15, primary nitrification aeration jet pump 16, primary nitrification liquid return pump 17, primary nitrification liquid return control valve 18, secondary denitrification tank agitator 21, carbon source feeding port 22, secondary Level nitri...
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The invention discloses a method for coupling anaerobic ammonia oxidation with a landfill leachate MBR biochemical system, which belongs to the field of landfill leachate treatment, and comprises a primary denitrification tank, a primary nitrification tank, a secondary denitrification tank, a secondary nitrification tank, a side flow denitrification tank, a side flow IFAS anaerobic ammonia oxidation tank and an external ultrafiltration system. The side flow denitrification tank is communicated with a water inlet of the side flow IFAS anaerobic ammonia oxidation tank through a pipeline VII provided with a water inlet valve of the side flow IFAS anaerobic ammonia oxidation tank; and a water outlet drum screen in the side flow IFAS anaerobic ammonia oxidation tank and the secondary nitrification tank are communicated with the external ultrafiltration system through a pipeline VIII provided with a water inlet valve of the external ultrafiltration system. Upgrading and reconstruction of conventional MBR biochemical treatment system facilities can be realized only by adding the side flow denitrification tank and the side flow IFAS anaerobic ammonia oxidation tank, and only the treatment load burden of the original external ultrafiltration system can be reduced instead of increasing.
Description
technical field [0001] The invention relates to a method for anaerobic ammonium oxidation coupling landfill leachate MBR biochemical system, belonging to the field of landfill leachate treatment. Background technique [0002] Landfill leachate refers to a kind of high-concentration organic wastewater formed from the moisture contained in the garbage itself in the landfill and waste incineration, the rain and snow water entering the landfill, and other moisture. Landfill leachate pollutant concentration is high, COD concentration is 40000~80000mg / L, BOD concentration is 20000~50000mg / L, ammonia nitrogen concentration is 2000~3000mg / L, TN concentration is 2500~3500mg / L, in addition to A large number of other metals, inorganic pollutants, etc. [0003] At present, the treatment of landfill leachate generally adopts pretreatment, UASB / IC / UB anaerobic fermentation to remove about 80% of COD, and then connects an external MBR biochemical treatment system to further remove COD, am...
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IPC IPC(8): C02F9/14C02F3/30C02F103/06
CPCC02F3/302C02F1/444C02F3/006C02F2305/06C02F2103/06C02F2301/043C02F2301/046
Inventor骆建明牛学义
Owner北京国环莱茵环保科技股份有限公司