Autotrophic nitrogen removal device for high-ammonia nitrogen

Abstract

The invention discloses an autotrophic nitrogen removal device for high-ammonia nitrogen. The device comprises a reactor body, and the reactor body comprises a reaction zone, a settling zone and a gasoutlet zone from bottom to top. The reaction zone comprises an aeration chamber formed by a plurality of semi-open flow guide plates and partition plates at intervals, the fixed ends of the flow guide plates and the partition plates are oppositely arranged on the inner wall of the reactor body, the flow guide plates and the partition plates are arranged at intervals, an aeration pipe is arrangedin the aeration chamber on one side of each partition plate, and a water inlet for feeding water is formed in the bottom of the reaction zone. A three-phase separator is arranged between the settlingzone and the gas outlet zone, the three-phase separator is composed of two downward inclined fenders, a gap between the two fenders and a gap between the fenders and the reactor body form an overflowing channel, and a water outlet for discharging water is formed in the gas outlet zone. Adaptive oxygen supply is realized through DO segmented regulation, adaptive conditions are provided for different functional bacteria, biomass loss of the system can be effectively reduced, biomass of the system is increased, and denitrification performance of the system is improved.

Description

technical field [0001] The invention relates to the technical field of biological treatment of nitrogen-containing wastewater, more specifically, it relates to a high-ammonia-nitrogen autotrophic denitrification device. Background technique [0002] The traditional biological denitrification process often limits the denitrification performance due to the lack of carbon sources when treating wastewater with high ammonia nitrogen and low C / N. Additional organic matter needs to be added, which increases operating costs and easily causes secondary pollution risks, which is not conducive to system safety and economy. run. A new denitrification process technology that combines the advantages of short-cut nitrification and anammox oxidation The whole autotrophic denitrification process can realize short-cut nitrification and anammox in the same reactor. It uses AOB to convert part of ammonia nitrogen into nitrite nitrogen, and then cooperates with anaerobic ammonium oxidation (Ana...

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Problems solved by technology

[0005] In view of this, the present invention overcomes the shortcomings of the current batch operation mode that cannot continuously feed water, prolongs the settling time and easily washes out the sludge when the sludge settling performance is reduced due to performance inhibition, and provides a high-ammonia-nitrogen autotrophic denitrification The device does not need to add additional metabolic intermediates and can effectively retain sludge

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