Based　on　the　stable　immobilizing　anammox　reactor,　the　anammox　coupling　with　partial　denitrification,　called　DEAMOX,　was　successfully　achieved　after　94days　operation　with　the　value　of　NO2--N　accumulation　rate　and　the　removal　rate　of　NO3--N　up　to　63.5%　and　98.4%,　respectively.　The　findings　revealed　that　the　optimum　ranges　of　COD/NO3--N　for　coupling　reaction　were　2.3~2.7.　Besides,　the　coupling　performance　was　weakened　by　the　raising　pH　values　up　to　8.0　or　8.5,　which　was　inconsistent　with　some　published　research.　The　immobilizing　anammox　further　coupling　whole　process　denitrification　was　achieved　by　adding　solid　carbon　source　of　PCL　into　DEAMOX　reactor.　Subsequently,　the　NO3--N　produced　by　anaerobic　ammonia　oxidation　could　be　completely　removed　and　the　removal　rate　of　total　nitrogen　increased　from　79.4%　to　88.3%.　Besides,　there　were　a　large　number　of　denitrifying　biofilms　attached　to　the　surface　of　PCL　particles.　©　2019,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.