Denitrifying　phosphorus　removal　was　stably　achieved　with　a　biological　step　feed　nutrient　removal　process　from　real　municipal　wastewater.　The　effects　of　operational　parameters　on　the　denitrifying　phosphorus　removal　and　the　improvement　of　nutrient　removal　by　intensifying　anoxic　phosphorus　uptake　as　well　as　control　strategies　about　maintenance　of　denitrifying　phosphorus　removal　in　the　modified　University　of　Cape　Town(UCT)　step　feed　process　were　discussed.　The　results　indicated　that　denitrifying　accumulating　bacteria(DPAOs)　could　be　successfully　enriched　with　the　maximum　proportion　and　anoxic　phosphorus　uptake　rate　of　39.2%　and　3.19-4.48　mg　P·(g　VSS)-1·h-1　respectively,　according　to　the　process　shift　from　the　A/O　model　to　the　modified　UCT　model.　Both　anoxic　and　aerobic　phosphorus　uptake　rates　and　phosphorus　removal　efficiency　increased　with　the　increase　of　anaerobic　volumes,　and　the　optimum　anaerobic/anoxic/oxic　volume　distribution　was　34/102/204L(1/3/6).　When　the　sludge　return　ratio　and　internal　recycle　ratio　were　respectively　set　at　100%　and　75%,　it　was　beneficial　to　the　achievement　of　true　anaerobic　environment　in　anaerobic　zones　with　ORP　of　-400--150　mV　and　suitable　mixed　liquor　suspended　solids　concentrations　and　nitrate　1-2　mg·L-1　in　anoxic　zones,　all　of　which　aided　to　enhance　the　denitrifying　phosphorus　removal　performance.　In　addition,　several　control　strategies　were　as　well　established　as　follows:　(1)　Control　the　internal　recycle　ratio　by　the　value　of　ORP　in　anaerobic　zones;　(2)　Adjust　sludge　return　ratio　according　to　nitrate　in　anoxic　effluent;　(3)　Set　the　volumes　ratios　based　on　the　anaerobic　phosphorus　release　amounts　and　COD　concentrations;　(4)　Regulate　the　influent　distribution　according　to　influent　nutrient　ratios.　©　All　Rights　Reserved.