Aeration　control　is　the　important　control　variable　for　the　biological　nitrogen　removal　process,　which　determines　the　system　removal　performance　and　operational　cost.　Some　typical　control　strategies　of　aeration　for　aerobic-anoxic　biological　nitrogen　removal　process　were　studied　using　Benchmark-BSM1　platform　model.　It　was　demonstrated　that　the　best　control　strategy　of　aeration　was　feedforward-feedback　control,　following　by　feedback　control,　constant　DO　control　and　constant　aeration　flow　rate　control.　Compared　with　constant　DO　control,　the　effluent　ammonia　concentration,　the　maximum　effluent　ammonia　concentration　and　aeration　cost　were　reduced　by　24%,　18%,　and　9%,　respectively,　with　the　feedforward-feedback　control.　The　aeration　control　ideas　and　control　strategies　at　different　conditions　were　determined.　In　order　to　achieve　nitrification　optimal　control,　the　aeration　flow　and　aeration　volume　should　be　both　controlled.