Device and method for enhanced biological phosphorus removal, simultaneous endogenous denitrification, and tandem anaerobic ammonia oxidation for urban sewage treatment

Abstract

The invention belongs to the technical field of biological sewage treatment and relates to an urban sewage treatment device and method used for strengthening biological phosphorus removal and synchronizing endogenous denitrification and cascade anaerobic ammonia oxidation. The body structure of the device comprises an urban sewageraw water tank, an endogenous denitrification coupled endogenous denitrification SBR reactor, a middle water tank, a partial nitrification and anaerobic ammonia oxidation SBR reactor, an outflow water tank and an online monitoring and feedback control system. Urban sewage enters the endogenous denitrification coupled endogenous denitrification SBR reactor for anaerobic stirring, enters the partial nitrification and anaerobic ammonia oxidation SBR reactor for aeration stirring first, and then drained water after the anaerobic stirring of the partial nitrification and anaerobic ammonia oxidation SBR reactor in the middle water tank is completed is pumped for batch-type low-oxygen anaerobic stirring, then the effluent of the partial nitrification and anaerobic ammonia oxidation SBR reactor flows back to the endogenous denitrification coupled endogenous denitrification SBR reactor for low-oxygen anaerobic stirring. The urban sewage treatment device is high in nitrogen and phosphorus removal rate, low in oxygen consumption, low in energy consumption, low in construction cost and operation cost and small in residual sludge yield.

Description

Technical field: [0001] The invention belongs to the technical field of sewage biological treatment, and relates to an urban sewage treatment device and method, in particular to a device and method for strengthening biological phosphorus removal, synchronous endogenous denitrification and serial anaerobic ammonium oxidation treatment of urban sewage. Background technique: [0002] Urban sewage is an important source of water pollution, but some mature traditional sewage nitrogen and phosphorus removal processes still have low nitrogen and phosphorus removal rates in the actual engineering application process, sludge bulking, high energy consumption, construction costs and operation Problems such as high cost and large surplus sludge output. Therefore, according to these bottlenecks in the current sewage treatment technology, it is necessary to explore a new process for nitrogen and phosphorus removal in the sewage treatment process, so as to improve the treatment effect of s...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology, to provide a device and method for strengthening biological phosphorus removal, synchronous endogenous denitrification and anaerobic ammonium oxidation in series to treat urban sewage, aiming at the water quality characteristics of urban sewage, and realizing the desorption of urban sewage Nitrogen and phosphorus removal, breaking through the use of traditional nitrogen and phosphorus removal processes to treat urban sewage due to insufficient carbon sources, low nitrogen and phosphorus removal rates, sludge bulking, high energy consumption, high construction and operating costs, and large surplus sludge output, etc. Combining the advantages of the enhanced biological phosphorus removal synchronous endogenous denitrification process and the short-range nitrification anammox process, the process is simple, the operating cost is low, and the output of residual sludge is small.

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