Device and method for treating low-carbon domestic sewage through single-stage SBBR short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation

Abstract

The invention relates to a device and method for treating low-carbon domestic sewage through single-stage SBBR short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation and belongs to the field of biological sewage treatment. The domestic sewage enters a short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation reactor through a water feed pump. In the short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation reactor, phosphorus accumulating bacteria achieve anaerobic phosphorus release by making full use of an organic carbon source in raw water; part of NH4<+>-N in the raw water is converted into NO2<->-N by ammonia oxidizing bacteria, one part of the NO2<->-N and the NH4<+>-N remaining in the raw water are subjected to an anaerobic ammonia oxidation action so as to achieve autotrophic denitrification, and the other part of NO2<->-N and a small amount of NO3<->-N resulting from the anaerobic ammonia oxidation action are utilized by denitration phosphorus accumulating bacteria so as to achieve synchronous deep denitrification and dephosphorization. According to the method, short-range nitration, anaerobic ammonia oxidation and denitration dephosphorization are applied to the biological treatment on the domestic sewage in a coupled manner, so that the synchronous deep denitrification and dephosphorization of the domestic sewage can be achieved on the basis of saving energy and making full use of the carbon source.

Description

technical field [0001] The invention relates to a single-stage SBBR short-range synchronous nitrification and denitrification dephosphorization coupled with anaerobic ammonium oxidation treatment device and method for low-carbon domestic sewage, which belongs to the technical field of sewage biological treatment and is a synchronous deep denitrification of urban domestic sewage that strengthens low carbon Experimental device and method for phosphorus removal. Background technique [0002] The denitrification and phosphorus removal of sewage has always been a hot spot in the field of sewage research. With the increasingly serious phenomenon of eutrophication caused by nutrients such as nitrogen and phosphorus, and the increasingly stringent discharge standards of water bodies, the research on existing sewage treatment processes is also urgently moving towards Development in the direction of high efficiency and low energy consumption. [0003] Due to various contradictions in...

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Problems solved by technology

[0003] Due to various contradictions in the current sewage denitrification and phosphorus removal process, such as: the competition between nitrifying bacteria and phosphorus accumulating bacteria for dissolved oxygen DO; Phosphorus is difficult to achieve effectively

In addition, the discharge of nitrogen and phosphorus in the effluent of 95% of sewage plants in China is difficult to meet the national first-class A discharge standard for urban sewage

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