The invention discloses a polymorphic
microorganism aggregate autotrophic
nitrogen removal integrated device which is provided with a reaction tank, wherein the reaction tank is internally filled with
microorganism aggregates and is provided with a water
decanting device with a vertical push rod, fixed packing, an aerator, an online pH value
detector, an online dissolved
oxygen detector, an online
ammonia nitrogen detector and an online
nitrate nitrogen detector; the reaction tank is connected with a water inlet pipeline, a water outlet pipeline, a
sludge outlet pipeline, an air pipeline, an overflow pipeline, a water inlet pump, a blast blower and an electrically operated valve; the reaction tank is also provided with an online gas flowmeter and a PLC (
Programmable Logic Controller); the online gas flowmeter, the online pH value detector, the online dissolved
oxygen detector, the online
ammonia nitrogen detector and the online
nitrate nitrogen detector are all connected with the PLC through signals. An operation method comprises the steps: (1) inoculating
sludge; (2) carrying out habituated culture; (3) starting partial
nitrification reaction; (4) inoculating anaerobic
ammonium oxidization granular
sludge; (5) proliferating the anaerobic
ammonium oxidization granular sludge; (6) culturing an anaerobic
ammonium oxidization bacterium biological film; (7) stably operating the autotrophic
nitrogen removal integrated device. The polymorphic
microorganism aggregate autotrophic
nitrogen removal integrated device is suitable for
denitrification treatment of medium and
high concentration ammonia nitrogen
sewage, simple in structure, high
in degree of
automation, good in
denitrification effect and low in operation cost.