CASS工艺在医院污水处理中的应用效果研究

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CASS,,(,221008):CASS,,CODCr、BOD5、、TP,200~300,120~260,7~15,2.6~3.5mg/L24000/L,,23~65,11~65,0.1~2.8,1.2~1.6mg/L1000/L,77.38%~90.37%,41.73%~54.54%,73.57%~92.78%,66.36%~90.91%97.08%~99.83%。TP《》。TP,CASS,。,1,,CASS,。:CASS;;:X7:B:1674-4829(2010)S1-0023-030750L。、、。,,[1-2]。CASS[3]。,,、,。CASS,CASS,,。11.1、、、、、、。、、、420、147,。33443m2,72427m2,1050,16,33,8,27。1368,1123,399,536。、、、、、、、:2009-10-19:2010-01-20:()(705-824).:(1988-),,,,.23120106EnvironmentalScienceandTechnologyVol.23Supp.1Jun.2010ApplicationEffectsofHospitalWastewaterTreatmentbyCASSProcessXUBu,XIONGJi-bing,DINGShuang-genAbstract:AllthedatabasedontheanalysisoftherealsamplesfromwastewaterdisposalplantofsomehospitalinXuzhou.Chemicaloxygendemand,biochemicaloxygendemand,ammonia-nitrogen,totalphosphorusandtotalcoliformgroupwere200~300,120~260,7~15,2.6~3.5mg/Landmorethan24000CFU/L,respectively,ininlet,while23~65,11~65,0.1~2.8,1.2~1.6mg/Landlessthan1000CFU/L,respectively,inoutlet.Theremovalrateare77.38%~90.37%,41.73%~54.54%,73.57%~92.78%,66.36%~90.91%and97.08%~99.83%,respectively.AboveindicatorsexcepttotalphosphorusreachedsecondlevelofIntegratedWastewaterDischargeStandard.Thereasonthattotalphosphorusexceededthestandardmaythereturnedsludgecarryingthenitratesuppressedeffectivereleaseofphosphorus.TheCASSprocesscouldachievebetterphosphorusremovalefficiencybydesigningarelativelyindependentanaerobiczone.Keywords:CASSprocess;Hospitalwastewater;Investigation2010630025020015010050010090807060504030201001234567ρ(BOD5)/(mg·L-1)/%3BOD5350300250200150100500959085807570/%ρ(CODCr)/(mg·L-1)12345672CODCr、、。1。1mg·L-1,GB8978—1996《》,2。21.21.2.11。11.2.2,CASS,,()、3,4h,2h,1h,1h,--,2CASS。1.3、:pH,CODCr,BOD5,NH4+-N,TP,,。:pH()、CODCr()、BOD5()、NH4+-N(-)、TP()、()、()。、2,7,7d/。2.2.12.1.1CODCrCODCr2。2,CODCr,CASS,CODCr,80%~90%,。CODCr50mg/L,GB8978—1996《》。2.1.2BOD5BOD53。3,BOD5,。3BOD5,250mg/L,4BOD5130mg/L,1。BOD5,,3BOD560mg/L,4BOD530mg/L。75%,90%,。2.1.3NH4+-NNH4+-N4。4,NH4+-N,,NH4+-N,14.87mg/L《》NH4+-N,NH4+-N3mg/L。,7.84pH126ρ(SS)360ρ(CODCr)123ρ(BOD5)2.27ρ(TP)14.2ρ(NH4+-N)16/≥24000/(·L-1)CASS6~9pH150ρ(SS)150ρ(CODCr)30ρ(BOD5)1.0ρ(TP)25ρ(NH4+-N)80/1000/(·L-1)mg·L-1242311614121086420100806040200ρ(NH4+-N)/(mg·L-1)12345674NH4+-N/%43.532.521.510.506050403020100ρ(TP)/(mg·L-1)/%12345675TP30000250002000015000100005000010099.59998.59897.59796.59695.5/%/(·L-1)1234567675%98%,。2.1.4TPTP5。5,TP3.5~2.6mg/L,TP1.6~1.2mg/L,50%。TP1mg/L,《》。,50%,5,41%。2.1.56。6,24000/L,ClO2,1000/L,97.08%~99.83%,。,,。2.22.2.1,CASS,CODCr,BOD5,NH4+-N,《》,TP,50%,TP1mg/L,,。CASS,,,(DO)、、、、pH、BOD,P。,,N03-0.1mg/L,N03-1.5mg/L,[4],CASSN03-5mg/L(),、、,,,,,(SCFS),P,,NH4+-N,TP,NH4+-N,TP。2.2.2(1)。,CASS,、、;,,。(2),。3,,,CASS,,(28)CASS2520106。,CASS。[][1]TSAICT,LINST.Desinfectionofhospitalwastesludgeusinghypochloriteandchlorine[J].JApplMivrobiol,1999,86(5):827-833.[2]KUMARBM,CHAUDHARIS.Evaluationofsequencingbatchreacator(SBR)andsequencingbatchbiofilmreactor(SBBR)forbiologicalnutrientremovalfromsimulatedwastewatercontainingglucoseascarbonsource[J].WatSciTechnol,2003,48(3):73-79[3],,,.[J].,2005,30(6):91-93.[4],.[M].:,2004.()(25)ρ(CODCr)28986.8ρ(BOD5)14813.6ρ(SS)30053ρ(NH4+-N)319.6ρ(TN)5514ρ(TP)3.61.8/(·L-1)8000420pH7.0~7.56.0~9.01()0.03kg·d-10.05kg·d-130kWh·d-10.03kg·d-1500·(·)-15.00·kg-14.00·kg-10.7·kWh-11.00·kg-1/(·d-1)16.70.150.20210.0338.08mg·L-1、、100%。20d,,。,CODCr=300mg/L,BOD5=140mg/L,SS=300mg/L,pH6~9、50000/L,2,GB18466—2005《》。2421.75,:3.4,、、18.35。,40m3,0.952。3。35(1)+++ClO2,CODCr300mg/L,BOD5150mg/L,TP3.9mg/L,HRT4.5h、100%、6∶1,。(2),99.9%,500/L。(3),,,,。,。(4)ClO2,ClO2,,,,。(5),,。(6)、、,、,,、。,,,,。[][1],,.[J].,2002,31(5):218-220.[2].[J].,2006,20(3):168-170.[3].[M].:,1996.()28

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