In　order　to　achieve　the　optimization　of　the　CANON　process,　ensuring　the　stability　of　water　quality　and　increasing　the　removal　rate　of　ammonia　nitrogen,　the　stability　of　CANON　process　water　quality　under　real-time　control　was　studied　in　the　SBR　reactor.　During　the　experiment,　the　temperature　was　controlled　at　30±1　and　the　pH　was　7-8,　based　on　the　corresponding　relationship　between　indirect　parameters　and　nitrogen　pollutants,　the　real-time　control　strategy　was　formulated.　The　results　showed　that　when　the　influent　ammonia　nitrogen　concentration　was　917-1　540　mg·L-1,　the　residual　ammonia　nitrogen　concentration　of　6　mg·L-1can　be　used　as　the　control　parameter　to　meet　the　requirements　of　process　stability　but　the　ammonia　nitrogen　sensor　had　many　problems　such　as　high　costs　and　large　errors.　The　characteristic　points　and　platforms　of　pH,　DO,　and　ORP　value　can　be　the　automatic　control　parameters,　which　can　maintain　the　long-term　stable　operation　of　the　CANON　process　and　ensure　that　the　average　ammonia　nitrogen　removal　rate　is　above　99%　and　the　effluent　quality　is　stable.　©　2017,　Science　Press.　All　right　reserved.