A high ammonia nitrogen autotrophic denitrification device

Abstract

The invention discloses a high ammonia nitrogen autotrophic denitrification device. The invention includes a reactor body, which includes a reaction area, a precipitation area and a gas outlet area from bottom to top: the reaction area includes a number of semi-open deflectors and partitions. The aeration chamber is formed by separating the plates. The fixed ends of the deflector and the partition are arranged on the inner wall of the reactor body oppositely. The deflector and the partition are arranged at intervals. The aeration chamber on one side of the partition is provided with an aeration Air pipe, the bottom of the reaction zone is provided with a water inlet for water intake; a three-phase separator is provided between the sedimentation zone and the gas outlet zone, and the three-phase separator is two inclined downward fenders, and between the two fenders The gap between the fender and the reactor body forms a flow channel; the gas outlet area is provided with a drain for water outlet. The invention realizes adaptive oxygen supply through DO segmental regulation, provides adaptation conditions for bacteria with different functions, can effectively reduce system biomass loss, increase system biomass, and improve system nitrogen removal performance.

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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