The CANON(completely autotropic nitrogen removal over nitrite) process has been received abroad attention in wastewater treatment recent years.In the study

a Sequencing Batch Reactor(SBR) was used to treat domestic wastewater using intermittent aeration with low dissolved oxygen(DO).After inoculating partial nitrification sludge and anammox sludge

the reactor was started-up successfully under appropriate temperature and sludge concentration.By using intermittent aeration with low DO

the system achieved the inhibition and elimination of nitrite-oxidizing bacteria(NOB).The harmonious effect of partial nitrification and anammox made the system stable.In the stable phase

the reactor had a good performance on the contaminant removal.With the influent concentrations of total nitrogen and ammonia of 63.9 mg·L-1 and 62.7 mg·L-1

the effluent of them were 12.3 mg·L-1 and 7.6 mg·L-1 and the removal rates of them were 77.8% and 86.7%

respectively

with the volume loading of total nitrogen removal of 0.16 kg N·(m3·d)-1.Thus

the experiment provided references for the application of the operation mode in autotrophic nitrogen removal of wastewater.