At the same time, the control of the reaction course by online detecting the DO and pH, ensured nitrification-denitrification via nitrite and avoided the problem of deficient nitrification owing to the shorter aeration time.

• 同时根据DO、pH在线监测、控制反应过程，避免了曝气时间过短、硝化不充分的问题，还保证了亚硝酸型硝化。