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.