Device and method for realizing treatment of low-carbon urban wastewater by anaerobic ammonia oxidation coupling denitrifying phosphorus removal through single-stage SBR

Abstract

The invention belongs to the technical field of biological sewage treatment, and relates to a device and a method for realizing the treatment of low-carbon urban wastewater by anaerobic ammonia oxidation coupling denitrifying phosphorus removal through single-stage SBR. After entering an anaerobic ammonia oxidation coupling denitrifying phosphorus removal SBR reactor, urban wastewater is firstly subjected to anaerobic stirring and then subjected to low-oxygen aeration stirring; water containing ammonia nitrogen and phosphorus in a middle water tank returns the anaerobic ammonia oxidation coupling denitrifying phosphorus removal SBR reactor, so as to be subjected to hypoxia reaction; anaerobic ammonium oxidation bacteria is subjected to anaerobic ammonium oxidation reaction through the ammonia nitrogen in returned water and nitrite nitrogen produced in the low-oxygen aeration stage, so as to realize nitrogen removal of the urban wastewater; DPB realizes the removal of phosphorus in the returned water through the action of denitrifying phosphorus removal. According to the method, anaerobic ammonia oxidation and denitrifying phosphorus removal coupling are applied to a wastewater biological nitrogen and phosphorus removal system, simultaneous phosphorus and nitrogen removal is realized, meanwhile an organic carbon source in raw water is sufficiently utilized, the aeration rate is reduced, and the discharge value of excess sludge is further reduced.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of sewage biological treatment, and relates to a low-carbon urban sewage treatment device and method, in particular to a single-stage SBR device and method for implementing anaerobic ammonium oxidation coupled denitrification phosphorus removal to treat low-carbon urban sewage. [0003] Background technique: [0004] The nitrogen and phosphorus removal of sewage has always been a hot spot in the field of sewage treatment research, and the research on existing sewage treatment processes is also developing in the direction of high efficiency and low energy consumption. Short-cut nitrification technology is the shortest way of ammonia nitrogen nitrification, which can save 25% of oxygen consumption compared with full-range nitrification technology, and can save 40% of organic carbon source when the nitrification product nitrite nitrogen is denitrified and denitrified. Anaerobic ammonia oxidation technolo...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art, seek to design and provide a device and method for single-stage SBR to realize anaerobic ammonium oxidation coupling denitrification and dephosphorization to treat low-carbon urban sewage, and to achieve low-carbon nitrogen ratio urban sewage is more efficient, Energy-saving synchronous denitrification and phosphorus removal solves the problems of insufficient carbon source, nitrogen and phosphorus removal cannot be optimal at the same time in the traditional denitrification and phosphorus removal process, the process flow is simple, and the operating cost is low, the sludge output is small, and through Combined with SBR real-time control technology, it can realize the stable progress of phosphorus release process, short-range nitrification, anaerobic ammonium oxidation and denitrification phosphorus removal process, combined with new biological nitrogen and phosphorus removal technologies such as short-range nitrification, anaerobic ammonium oxidation and denitrification Advantages, while maximizing the use of raw water carbon sources, realize high-efficiency, low-energy denitrification and dephosphorization of urban sewage

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