Composite semi-nitration-anaerobic ammonia oxidation autotrophic denitrification device and operating method thereof
A technology of anaerobic ammonium oxidation and autotrophic denitrification, which is applied in the field of biochemical sewage treatment, can solve the problems of affecting the treatment effect of the system, the floating and loss of granular sludge, etc., to ensure efficient operation, reduce microbial biomass, and strengthen sludge lasting effect
Active Publication Date: 2015-01-07
辽宁省机械研究院有限公司
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[0007] (3) Compared with the fixed bed, the fluidized state can make the matrix distribution in the reactor more uniform, and the mass transfer effect is significantly improved, but when the gas product is blocked in the granular sludge, it will cause the granular sludge to float or lose , which in turn affects the processing effect of the system
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[0028] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0029] 1. A composite semi-nitrification-ANAMMOX autotrophic denitrification device, characterized in that the device is provided with an inlet water tank 1, an inlet pump 2, a reactor 3, a sedimentation tank 4, a constant temperature circulating water tank 5, and an air pump 6 , sludge return pump 7, online pH adjustment device 8, alkali inlet pump 9, dosing box 10, online dissolved oxygen measuring instrument in aerobic area 11, online dissolved oxygen measuring instrument in anoxic area 12, stirring controller 13, reactor 3. The interior is equipped with a biofilm module 14, an air duct 15, a three-phase separator 16, an annular microporous aeration tube 17, a stirring shaft 18, and a stirring paddle 19; The water pump 2 and the water inlet pipe are connected with the reactor 3, and the water inlet pump 2 is used to control the flow of waste water; the bot...
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The invention relates to a composite semi-nitration-anaerobic ammonia oxidation autotrophic denitrification device and an operating method thereof. The device is mainly characterized in that a reactor is formed through stacking an upper section and a lower section, the upper section is of a fixed-bed reactor type, namely that a bio-membrane assembly is arranged in the section, the lower section is of a fluidized-bed reactor type, a fluidization strengthening effect on free-state granular sludge is realized through the mechanical stirring action of a stirring paddle, and a constant-temperature circulating water tank is communicated with a hollow space formed between an inner tube of the reactor and an outer tube of the reactor through a pipeline. When the device is applied to sewage treatment, firstly, the device is started up, and then, regulating and controlling operations are carried out; the ammonia nitrogen removal ratio can reach 90%, and the total nitrogen removal ratio reaches over 80%.
Description
technical field [0001] The invention belongs to the technical field of biochemical sewage treatment, and in particular relates to a compound semi-nitrification-anammox autotrophic denitrification device and an operation method used in sewage treatment. Background technique [0002] The pollution of ammonia nitrogen in our country is becoming more and more serious, and the discharge volume far exceeds the environmental capacity of the receiving water body. The resulting environmental problems have attracted great attention from all parties. In the "Twelfth Five-Year Plan", the country has newly added binding targets for ammonia nitrogen emission reduction, which not only sets a higher threshold for the emission of ammonia nitrogen by various pollution source enterprises, but also puts forward higher requirements for the process and technical level of pollution control. However, the traditional denitrification process is mostly based on the principle of nitrification-denitrifi...
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IPC IPC(8): C02F3/30
Inventor马永光于泽旭古川宪治朱彤蔡晨秋
Owner辽宁省机械研究院有限公司