SBR (Sequencing Batch Reactor) and SBBR (Sequencing Biofilm Batch Reactor) municipal sewage high-efficiency biological treatment method and device based on anaerobic ammonia oxidation

Abstract

The invention provides a SBR (Sequencing Batch Reactor) and SBBR (Sequencing Biofilm Batch Reactor) municipal sewage high-efficiency biological treatment method and device based on anaerobic ammonia oxidation, and belongs to the technical field of sewage biological treatment. The device is provided with an SBR and an SBBR and is characterized in that sewage enters the SBR firstly, so that the biological phosphorus removal is realized through anaerobic-aerobiotic alternate operation, and meanwhile, organic matters in water are removed through heterotrophic bacteria; by controlling the short sludge age and no occurrence of nitrification, the surplus sludge quantity is large, and the phosphorous and organic matter removal effect is good; and yielding water of the SBR enters the SBBR, so that the partial nitrification-anaerobic ammonia oxidation autotrophic nitrogen removal is realized through low-oxygen aeration operation. The process operation method comprises the following steps: (1) sludge inoculation and initialization phase; and (2) operational phase. The method and the device are suitable for the treatment of municipal sewage with low carbon nitrogen ratio, are energy-saving and have good nitrogen and phosphorous removal effects and high removal rate of pollutants; and the system control is flexible.

Description

technical field [0001] The invention relates to a SBR+SBBR high-efficiency biological treatment method and device for urban sewage based on anaerobic ammonium oxidation, belonging to the technical field of sewage biological treatment. Background technique [0002] The eutrophication of water body is becoming more and more serious, and the discharge of nitrogen and phosphorus in sewage is an important reason for it. The removal of nitrogen and phosphorus pollutants has become a key issue in sewage treatment and recycling. my country's "Urban Sewage Treatment Plant Pollutant Discharge Standard" (GB18918-2002) promulgated in 2002 requires that the effluent quality of all sewage units should be less than 5mg / L for ammonia nitrogen and less than 15mg / L for total nitrogen. At the same time, construction after January 1, 2006 The total phosphorus in the sewage treatment plant is less than 0.5mg / L. The energy consumption of existing sewage treatment plants is very high, and the eff...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of high energy consumption, poor effluent stability, and partial effluent nitrogen and phosphorus that cannot reach the first-class A standard in the existing urban sewage treatment, and propose a SBR+SBBR urban sewage high-efficiency biological treatment device based on anaerobic ammonium oxidation And the operation method, the method and device first pass the sewage into the SBR reactor, and discharge the phosphorus-rich sludge through the alternate operation of the anaerobic phosphorus release process and the aerobic phosphorus absorption process to realize biological phosphorus removal. Bacteria remove part of the organic matter in the influent; then the sewage is passed into the SBBR reactor for autotrophic denitrification through short-range nitrification-ANAMMOX

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