The nitrogen pollution of the wastewater has gone from bad to worse, it breaks up the ecology balance and threatens drinking water safety. Biological wastewater nitrogen removal is the focus of water pollution control. Anaerobic ammonium oxidation (ANAMMOX) shows board development and application prospect because of high-efficiency and energy-saving. But anaerobic ammonium oxidation bacterial is slow-growing; the reactor start-up time is long; the operation of reactor is not stable; ANAMMOX is vulnerable to...