UniTank工艺流程溶解氧浓度动态分析董姗燕

[12]　TIANNingning(),YANGLiping(),PENGYingdeng().Treatmentofdomesticwastewaterbysoilinfiltrationsystem[J].ChinaWaterandWastewatr(),2000,16(5):12-15.[13]　ZHANGJian(),HUANGXia(),SHIHanchang(),etal.Reviewofsubsurfacewastewaterinfiltrationsystemappliedinsewagetreatment[J].TechniquesandEquipmentforEnvironmentalPollutionControl(),2002,3(4):47-51.[14]　YANGLiping(),TIANNingning().Studyonsewagepurificationandgreen-landutilizationbasedonsoilcapillarypercolation[J].UrbanEnvironment&UrbanEcology(),1999,12(3):4-7.[15]　SUNTieheng(),ZHOUQixing(),LIPeijun().Pollutionecology()[M].Beijing:SciencePress,2001:348-350.[16]　NICOLSDS.Capacityofnaturalwetlandstoremovenutrientsfromwastewater[J].JWaterPollutionControlFed,1983,55:495-505.Efficienthome-useddecentralizedsewagetreatmentbycombiningbio-andeco-engi-neeringtechnologiesPANJing1,2,SUNTie-heng1,3,4,LIHai-bo4(1SchoolofResources&CivilEngineering,NortheasternUniversi-ty,Shenyang110004;2CollegeofChemistryandLifeScience,ShenyangNormalUniversity,Shenyang110034,China;3InstituteofAppliedEcology,ChineseAcademyofSciences,Shenyang110016,China;4ShenyangKeyLaboratoryofEnvironmentalEngineering,ShenyangUniversity,Shenyang110004,China)Abstract:Thispaperismainlytointroduceitsrenovatedhome-sewagetreatmentsystembasedonthecombinationofeco-andbio-en-gineeringtechnologies(biology-subsurfacesewageinfiltrationsys-tem).Toevaluatethedynamicfeaturesofnitrogenandphosphorousremoval,wecollectedthewatersamplesfrom2003to2005andmadecarefulanalysisoverthem.TheresultsofouranalysisindicatethatNH+4-Nreductiondisplaysseasonalvariations.ThelowestefficientNH+4-NreductionisfoundtohappenduringDecembertoMarchwhilemoreefficientreductionoccursduringJulytoSeptember.Incontrast,thegreatestefficientreductiontakesplaceinAugust.Thus,itcanbeshownthatNH+4-Nremovalefficiencyprovestobe75.6%,77.4%,78.1%inAugustfrom2003to2005,respectively,withitsmeanremovalefficiencybeing77.0%.ThoughseasonalvariationofphosphorousreductionseemsnotasobviousasthatofNH+4-N,itsreductionefficiencyalsovariesbetween85.4%and96.2%annually.Ontheonehand,NH+4-Nremovalisbetterex-pectedtobecarriedoutbysuspendedbiologicalfloating-bedand,ontheotherhand,TPremovalisexpectedtobeaccomplishedbysub-surfaceinfiltrationsystem.Theresultsgainedfromourlong-timecon-tinuousmonitoringandcontrollingobservationrevealthatthesystemcaneffectivelybereducedtotheoutputofCODby89.2%±1.4%,NH+4-Nby62.8%±3.2%,TPby88.2%±3.4%andSSby86.8%±1.8%,withthetotalnumberofmicrobesreducedby98.3%±0.1%.Justasthenitrogenremovalefficiencywasfoundtoin-creasefrom2003to2005,andthephosphorousremovalefficiencywasfoundtoincreasefrom2003to2004,soitisfoundtodecreasealittlebitin2005.Sofarthetreatedeffluentwiththegivenmethodcanbemadetocomeuptothestandardoflivingwastewatertreatment(CJ251—89)andthestandardsofthecirculateduseofthetreatedwastewaterinShenyangmunicipality,theremovaleffectsofthissys-temhasbeenstableandhaslessinfluencefromoutsideenvironment.Thus,thedecentralizedwastewaterecologicaltreatmentsystemcanbeadoptedtoimplementcollection,treatmentandpurificationofwastewateronthespot,whichwillmakeitfindsuperdevelopingspaceinthehome-purposedapplicationbothinthecityandinthecountryside.Keywords:waterpollutionpreventionengineering;eco-treatment;decentralizedtreatment;domesticsewage;subsurfaceinfiltrationCLCnumber:X703.1　　　Documentcode:AArticleID:1009-6094(2007)01-0040-03＊:2006-08-16:,,;,,,、。:(042312042):1009-6094(2007)01-0042-04UniTank＊董姗燕1,汪喜生2,彭争梁2,王文佳1,许　洲2,姚重华1(1,200237;2,200942)　:ASM2DUniTank,,。,,。,;,。,,。UniTank。:;UniTank;;;:X703　　　:A0　　、,,(SO2)。UniTank,,。UniTank,,,。Uni-Tank,,,[1]。1　3UniTank。6h,4。UniTank1。1,,(T1),(T2),(T3)、;,、。(ContinuousStirred-TankReactor,CSTR),,0.3[2]。　　ASM2D[3],3(、、),4(、、427120072　　　　　　　　　　　　　　安全与环境学报JournalofSafetyandEnvironment　　　　　　　　　　　　　　Vol.7　No.1　Feb,2007、),3(、、),2(、)。,(ProportionalInte-gral,PI)5mmol·L-1,。ASM2D,3、6、82。ASM2D。COD、SO2,COD。ASM2D,[4]。2　UniTank3SO2,2。2,2(12h,14.5～15d),SO2。T1,,COD,T1SO20,40min;T1,T1,COD,SO2;T1,,SO2;30min,T1,,SO2;,T2T1,T2SO2T1,T1(0.3),T1SO2,10min0。　　UniTankSO2。,SO2、、,[dSO2/dt]=[dSO2/dt]+[dSO2/dt]+[dSO2/dt]+[dSO2/dt](1)　[dSO2/dt]SO2,[dSO2/dt]SO2,[dSO2/dt]SO2,[dSO2/dt]SO2,[dSO2/dt]SO2,mg·L-1·d-1。T1,(SO2=0)3,SO23。3,,SO20,T1,T1SO2,[dSO2/dt]0。40min,,,[dSO2/dt]22～74mg·L-1·d-1,SO2。T1(5min),[dSO2/dt]5min74mg·L-1·d-1860mg·L-1·d-1,SO2。,SO2,[dSO2/dt]-202mg·L-1·d-1。,SO2,1　UniTankFig.1　FlowchartofUniTankprocess2　UniTankSO2Fig.2　DynamicbehaviorofSO2inUniTankprocess3　UniTankSO2Fig.3　Influenceofsub-processesondynamicbehaviorofSO2nsidevesselofUniTankprocess,[dSO2/dt]30min0,SO20.1mg·L-1。SO2,0.5。　　T2,、、3SO24。4,T1,T2,[dSO2/dt]600mg·L-1·d-1,[dSO2/dt]-532～-570mg·L-1·d-1,[dSO2/dt]-5～-21mg·L-1·d-1,SO2,[dSO2/dt]35～70mg·L-1·d-1,DO。14.85d,T2,[dSO2/dt]0;4320072　　　　　　　　　　　,:UniTank　　　　　　　　　　　Feb,2007SO2,[dSO2/dt]-520mg·L-1·d-1-781mg·L-1·d-1(),-781mg·L-1·d-1-1.6mg·L-1·d-1();[dSO2/dt]-16mg·L-1·d-1,[dSO2/dt]70mg·L-1·d-1-709mg·L-1·d-1,-709mg·L-1·d-1-1.0mg·L-1·d-1。3　UniTank[5]。,dSO2/dtKLa,dSO2/dt=KLa[SO2＊-SO2](2)　SO2＊,SO2,mg·L-1。、SO2,[dSO2/dt],[dSO2/dt]=KLa′(3)KLa′=KLa[SO2＊-SO2](KLa217～280d-1,KLa120～1