In　order　to　study　the　operation　characteristics　of　3DBER-S　(three-dimensional　biofilm-electrode　reactor　coupled　with　sulfur　autotrophic　denitrification　technology)　in　the　aspect　of　denitrification　and　simultaneous　removal　of　PAEs　(phthalate　esters),　the　removal　of　TN　(total　nitrogen),　PAEs,　variation　of　sulfate　and　pH　value　as　well　as　the　denitrification　route　and　the　removal　ability　of　PAEs　in　the　coupling　system　was　traced　and　analyzed　according　to　three　different　HRT　(hydraulic　retention　time)　which　was　12　h,　6　h　and　3　h　respectively.　The　result　show　that　under　different　HRT,　the　removal　efficiency　of　TN　is　about　95%,　the　average　effluent　concentration　of　TN　is　under　2　mg/L　and　the　average　removal　rate　of　PAEs　is　above　80%.　Also,　the　average　removal　rate　of　DBP　(dibutyl　phthalate)　exceedes　97%,　while　the　number　of　DEHP　(di-2-ethylhexyl　phthalate)　is　more　than　83%.　The　systems　optimal　hydraulic　retention　time　is　6　h,　the　TN　mass　concentration　of　effluent　maintaines　around　0.80　mg/L　at　this　time　interval,　which　meet　the　IV　TN　standard　of　Surface　Water　Environment　Quality　Standard　(1.5　mg/L).　The　average　removal　loading　of　DBP　and　DEHP　is　594.79　mg/(m3·d)　and　188.13　mg/(m3·d)　respectively.　The　elemental　sulfur　and　the　hydrogen　produced　by　the　cathode　can　remedy　the　relative　shortage　of　denitrification　electronic　donor　resulted　from　HRT　decreasing　and　NO3--N　load　increasing　in　the　influent,　meanwhile　can　maintain　the　high　efficiency　and　stability　of　the　system,　the　strong　elimination　capacity　of　PAEs　is　due　to　the　synergistic　effect　of　filler　absorption,　biodegradation　and　electrochemical　oxidation.　©　2016,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.