Continuous flow partial nitrification parallel integration anaerobic ammonia oxidation denitrification phosphorous removal SBBR (Sequencing Batch Biofilm Reactor) process

Abstract

The invention discloses a continuous flow partial nitrification parallel integration anaerobic ammonia oxidation denitrification phosphorous removal SBBR (Sequencing Batch Biofilm Reactor) process, and belongs to the field of sewage biological treatment. The device comprises a raw water tank, an integration anaerobic ammonia oxidation denitrification phosphorous removal reactor, an adjusting watertank, a continuous flow partial nitrification reactor and a water yielding tank, wherein urban sewage flows into the integration anaerobic ammonia oxidation denitrification phosphorous removal reactor and the partial nitrification reactor respectively. In the integration anaerobic ammonia oxidation denitrification phosphorous removal reactor, phosphorus-accumulating bacteria releases phosphorus anaerobically by fully utilizing an organic carbon source in raw water. In a partial nitrification reactor, ammonia oxidizing bacteria converts NH4<+>-N in the raw water into NO2<->-N; the amount of effluent from the partial nitrification reactor is adjusted through a middle water tank, and then enters the integration anaerobic ammonia oxidation denitrification phosphorous removal reactor; under the action of anaerobic ammonia oxidizing bacteria, NO2<->-N is reacted with NH4<+>-N to generate N2 and a small amount of NO3<->-N in order to realize effective removal of nitrogen; during denitrifyingphosphorus removal, NO3<->-N is taken as an electronic receptor for absorbing phosphorus. By adopting the method, nitrogen and phosphorus removal of the sewage is realized while energy saving is realized and the carbon source is fully utilized.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to a continuous-flow short-path nitrification parallel integrated anaerobic ammonium oxidation denitrification dephosphorization SBBR process and method suitable for upgrading and transformation of existing sewage treatment plants. Background technique [0002] Water is the material that human beings depend on for survival and the necessary condition for the existence of life and economic development. However, in recent years, the quality of water resources and environment has continued to decline, and the water environment has continued to deteriorate. China's surface water resources are seriously polluted, and groundwater resources are not optimistic. Considering the current situation of China's surface water quality comprehensively, only 32.2% of the Class I and Class II standards in the "Surface Water Environmental Quality Standards" (the statistics of the ri...

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Problems solved by technology

However, due to the carbon source competition between PAO and denitrification process in this process, when the C / N ratio of urban sewage is generally low, the N in the effluent is difficult to meet the standard, and a large amount of organic carbon sources need to be added in the process, making the operation Increased costs

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