The pollution of water evironment and the shortage of water resources drive the researches in the reuse of wastewater and applications of advanced treatment. The secondary effluent of municipal wastewater is a good potential water source due to its stable quality and large quantity. But researchers are challenged by the nitrogen removal with low carbon source in the secondary effluen of municipal wastewater. At present, the advanced treatment of nitrogen with low organic carbon is a challenging work. Tradit...