CAST工艺脱氮的研究张效先

··:2003-07-12:(1944-),,,1969,。CAST张效先,董　晶,郝　冀(,　300072)　　:在CAST工艺中,通过控制活性污泥工艺的反应环境可以使氮的去除过程优化。将传统的处理方法和周期循环运行过程的处理效果做长时间的比较,通过检测比较硝化速率,同时硝化反硝化以及除磷效果,可知,当运行负荷相同时,周期循环运行过程是一种很有优势的污水处理方法。　　:;CAST;;;:X703.1　　　　:A　　　　:1001-3644(2004)02-0028-03NitrogenRemovalinCyclicActivatedSludgeTechnologyZHANGXiao-xian,DONGJing,HAOJi(SchoolofCivilEngineering,TianjinUniversity,Tianjin300072,China)Abstract:Thepracticeofmanipulatingactivatedsludgereactionenvironmentstoobtainmaximumnitrogenremovalhasbeenopti-mizedbyusingCyclicActivatedSludgeTechnology(CAST).Theefficienciesofconventionalandcyclicprocesseswerecomparedthroughparalleloperationoveraone-yearperiod.Throughexaminationandcomparisonofthenitrificationrates,thestabilityofco-currentnitrification/denitrificationandthebiologicalphosphorusremoval,itwasfoundthatthecyclicsystemwasdemonstrablysuperiorintreatmentefficiencywhenoperatedatthesameloadingconditionsastheconventionalprocess.Keywords:SBR;CAST;nitrogenremoval;nitrification;denitrification1　综　　述(SBR)20,,,,SBR,CAST(CyclicActivatedSludgeTechnology)。,、、。—,,(),,。,,。CAST,。,,,,。,,,CAST,、,,。2　CAST系统的生物选择器,,,。CAST。—,,,。—28—2004232DOI:10.14034/j.cnki.schj.2004.02.008、(PHB)(PHA),[1]。。,,。,.,,。,。:,0.1mg/L,,,20%。3　CAST系统中的硝化反硝化反应3.1　,,,,,,。3.2　—CAST,,[2]。CAST4h,2h,1h。CAST,。2h,。[2],;,()。,(),,(),。,、、。CAST,[3]。,,,,,。,,,。,,。,,,———[4],。,———,C/NTN,、。4　CAST工艺脱氮过程的分析,CAST,。,,。,CAST4,2,30%,6～7。BOD,,。,[1]。;。,,,。,,,,。。,。、pH、,。CAST,,—29—2004232。CAST,,。5　CAST工艺脱氮效果,4h,2h,2h。。,[2],。,“—”,。,6h。6h1:1　CAST6　　1Portage/Catawaba[3]。Portage/Catawaba15500m3/d。CAST。。1　PortageCatawaba(1991.8.1～1993.12.31)　50%90%1～2.850%90%(mg/L)BOD5210345——BOD548742125SS176388140392VSS152336124308COD325580165287COD12521282125T-P5.47.32.15.1NH4-N1.7132.65.7717.7NO3-N0.410.00.745.5(mg/L)BOD52.46.52.99.8SS611612COD19382229T-P0.632.200.321.42NH4-N0.473.90.623.0NO3-N1.604.30.723.98MLSS(mg/L)4140522049804620MLVSS/MLSS0.760.800.790.82CAST,CAST:2　CAST　　　　(m3/d)30000200310100000600006000023:3　(mg/L)(mg/L)CODCr350CODCr≤60BOD5150BOD5≤20SS200SS≤25NH3-N26NH3-N≤15(P)3.0(P)≤0.56　总　　结6.1　,。:(下转第44页)—30—2004232,、;“”,、、、、、、、;、,,、、、,,、、;,,、、,。6.7　,,,,,,,;;,,,、。7　结　　语、、,、、、、,。,,,,,,。:[1]　,.()[M].:,1992.[2]　　.[J].,2002,(2):19-22.[3]　,　.[J].,2002,(2):13-16.[4]　,,.2015[Z].:,2001.[5]　.WTO[Z].:,2002.85-103.(上接第30页)NH4-Ne=(1θca+ftba)KNμmax20ftO2kO2+O2-1θcê-ftba(1)4　θcadbad-10.15ft[0.098(T-20)]eKNNH4-NmgNL-11.0kO2mgO2L-10.5O2mgO2L-10.5,2.0μmax2020℃d-10.86.2　　,、、、。DO,ORP,,,pH,。,DO。,,,,。,CAST,,。:[1]　　.[D].:,2001.[2]　MervynCGoronszy,GunnarDemoulin,MarkNewland.Aeratedden-itrificationinfull-scaleactivatedsludgefacilities[J].Wat.Sci.Tech,1997,35(10):103-109.[3]　GunnarDemoulin,MervynCGoronszy,KonradWutscher,EgbertForsthuber.Co-currentnitrification/dinitrificationandbiologicalP-removalincyclicactivatedsludgeplantsbyredoxcontrolledcycleoper-ation[J].Wat.Sci.Tech,1997,35(1):215-224.[4]　YangL,AllemanE.Investigationofbatchwisenitratebuild-upbyanenrichednitrificationculture[J].Wat.Sci.Tech,1992,26(5～6):997-1005.—44—2004232