1,2,2,3,3,3(1.,250100;2.,266033;3.,100084):(4cm/d),,,55%()65%,COD:;;;:X703.1:A:1000-4602(2004)04-0001-04EnhancedNitrogenRemovalbyMeansofIntermediateDistributaryinSubsurfaceInfiltrationSystemZHANGJian1,SHAOChang2fei2,LIUZhi2qiang2,HUANGXia3,SHIHan2chang3,HUHong2ying3(1.SchoolofEnvironmentalScienceandEngineering,ShandongUniversity,Jinan250100,China;2.SchoolofEnvironmentalandMunicipalEngineering,QingdaoInstituteofArchitecturalEngineering,Qingdao266033,China;3.DeptofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Twosetsofsubsurfaceinfiltrationsystemwithredclayasmediawerebuilttomakepilottest.Thesystemswereusedtotreattownshipdomesticsewage.Thetestshowedthattheinterme2diatedistributarycansignificantlyimprovetheeffectofsubsurfaceinfiltrationsystemonremovalofto2talnitrogen,withTNremovalrateincreasedfrom55%(withouttakingdistributarymeasures)to65%,andithasnogreatinfluenceontheremovalofCODandtotalphosphorus.Keywords:townshipdomesticsewage;subsurfaceinfiltration;intermediatedistributary;nitrogenremoval:(2000-03),,,[1],,12004Vol.20CHINAWATER&WASTEWATERNo.4[12],,C/N3,[3],(),11111#2#,1#111#3.01.50.8m,1#,(),,2#,1#200236,:COD110mg/L,15mg/L,2.3mg/L4cm/d,180L/d,1#=1,1,1d1d11211CODN-(1-)--221123232,1#2#(55%65%),518mg/L(3),1#2#,1#(),,,,1#,454,1mg/L,,1#2#,22004Vol.20No.4()455,0.04mg/L,2#,1#,1#,,,,1#(2#),2#,212CODCOD66,COD80150mg/L,1#2#COD,COD,,,6COD777,14mg/L,95%,0.1mg/L,,,,,1845P2O575kg/(hm2a),1959114,023cm,,[1]George45,100%213,,,,32004Vol.20No.4,,,,,,,(),3,,55%65%COD,,:[1],.[M].:,1991.[2],,,.[J].,2002,23(6):57-61.[3],.[M].:,1998.[4].(3)[M].:,1998.:(1976-),,,,:(0531)8361568:2003-10-10,,CN31-1513/TQ,ISSN1009-0177(),20:,2516,6,36,,4-652,,,,:815:200072:(021)6625006156959993-220:(021)6625006142004Vol.20No.4