In　order　to　remove　total　phosphorus　(TP)　and　organic　matter　in　domestic　sewage　and　achieve　partial　nitrification,　an　enhanced　biological　phosphorus　removal　granular　sludge,　which　was　cultivated　with　synthetic　wastewater　at　room　temperature　(17-19),　was　used　as　inoculated　sludge　in　this　study.　The　effect　of　phosphorus　removal　and　nitrosation　on　domestic　sewage　was　studied.　The　experiment　showed　that　the　phosphorus　removal　of　the　granular　sludge　could　be　achieved　through　27　d　cultivation.　The　TP　concentration　of　effluent　could　reach　less　than　1　mg/L　and　the　TP　release　in　anaerobic　stage　ΔρTP/ρCOD　removal　in　anaerobic　stage　(ΔρCOD)　could　reach　0.3.　The　change　of　the　aeration　methods　could　make　RNA　increase　from　0　to　90%　in　a　short　time.　The　concentration　of　NO　-2-N　reached　10　mg/L,　and　the　concentration　of　TP　and　COD　in　the　effluent　were　kept　below　0.5　and　50　mg/L,　respectively.　The　particle　size　decreased　from　1　200　μm　to　1　000　μm　and　the　value　of　SVI　reduced　from　32　mL/g　to　29　mL/g.　The　ratio　of　protein　(PN)　to　polysaccharide　(PS)　dropped　from　2.0　to　1.2.　Although　the　particle　size　slightly　decreased　due　to　domestic　sewage,　it　remained　larger　than　1　000　μm　and　the　particles　possessed　better　settleability.　Thus,　the　adoption　of　high　and　low　gradient　aeration　can　achieve　phosphorus　removal　and　nitrosation　with　the　removal　rate　of　TP　reaching　95%,　RNA　reaching　over　90%,　and　the　particle　performance　remaining　stable.　©　2019,　Editorial　Board　of　Journal　of　Harbin　Institute　of　Technology.　All　right　reserved.