Anarwia

()30(6):628634,2004JournalofZhejiangUniversity(Agric1&LifeSci1):2004209224:(2002BA514A212224,2002BA514A26204)L:(1966),,,,LL:,,,,LTel:0571286971709;Fax:[phone];E2mail:[e-mail].:100829209(2004)0620628207Anarwia1,2,1,2(1.,310029;2.,610041):22(Anarwia)2SBRSBRL,2SBR,,;AnarwiaSBR,,CODNH4+2N,(GB1859622001)LSBR,Anarwia,HRT38.6%11.8%16.4%95.9%,2784m3ödL,AnarwiaSBR47.5%;,AnarwiaSBR9.1%L,Anarwia,SBRL:;;;22;;:X703.1:ADENGLiang2wei1,2,ZHENGPing1,CHENZi2ai2(1.DepartmentofEnvironmentalEngineering,Zhe2jiangUniversity,Hangzhou310029,China;2.BiogasScientificResearchInstituteoftheMinistryofAgriculture,Chengdu610041,China)Technologicalandeconomicalpotentialofanaerobic-addingrawwastewater-intermittentaerationpro-cessfortreatmentofpiggerywastewater.JournalofZhejiangUniversity(Agric1&LifeSci1),2004,30(6):6282634Abstract:Atechnologicalandeconomicalcomparisonbetweentheanaerobic2addingrawwastewater2intermittentaeration(Anarwia)processandtheanaerobic2SequencingBatchReactor(SBR)processandSBRprocesswascarriedout.Theresultoflaboratory2andfull2scaleexperimentshoweditwasnottechnologicallyfeasibletoapplytheanaerobic2SBRprocesstotreatmentofpiggerywastewaterbecauseofpoorefficiencyofpollutantremovalfromwastewaterandhigheramountofpollutantremnantintheeffluent.TheperformanceofAnarwiaprocesswassimilartothatoftheSBRprocess,withhowevermoreefficientremovalofpollutantandrelativelylowerconcentrationofpollutantintheeffluent,whichmeetthenationalwastewaterdischargestandard.Thehydraulicretentiontime(HRT),investment,sludgeyieldandoxygendemandfortheAnarwiaprocesswererespectively38.6%,11.8%,16.4%and95.9%lowerthanthoseforSBRprocess.DuringthetreatmentwiththeAnarwiaprocess,biogasof2784m3ödwasproduced.Ifthebiogaswasnottakenintoaccount,theoperationcostfortheAnarwiaprocesswas47.5%lowerthanthatfortheSBRprocess.Iftakenintoaccount,theoperationcostfortheformerwasonly9.1%ofthelatter.ThetechnologicalandeconomicalanalysisindicatedthatAnarwiaprocessisastable,high2removal,cost2efficientandnovelprocess,andisaprospectivesubsti2tutionforSBRprocessintreatmentofpiggerywastewater.Keywords:piggerywastewater;anaerobicdigest;sequencingbatchreactor;anaerobic2addingrawwastewater2intermittentaeration(Anarwia);technologicalfeasibility;economicalfeasi2bility,,,L,L,;,[1]L,,LBOD5öTN,,CODNH4+2N,[26]L[5][7],()()()L,[812]L,,L,22(Anarwia)(,,(SBR)),[13,14]LAnarwiaL11.12SBR1L,,SBR,,SBRpH6.0,5.0,LNH4+2N70%90%,NH4+2N100mgöL;COD35.6%,COD1000mgöL[12]L(GB1859622001)L,,COD,NH4+2N;NH4+2N,CODL,L132SBR,LAnarwia2L1-SBRTable1Thetreatmentresultofpiggerywastewaterbylaboratoryscaleanaerobicdigester2SBRÉ[5]ö%Ê[12]ö%Ë[4]ö%CODö(mgõL-1)1429.11440.9389.3407.371.573.059215605401349-59.035.62794116158.4NH4+2Nö(mgõL-1)1393.71422.0594.9634.855.057.344991110023267.488.957518031.3pH8.008.145.465.687.207.504.606.507.755.919266,:Anarwia2AnarwiaSBRTable2ThetreatmentresultofpiggerywastewaterbylaboratoryscaleAnarwiaandSBRSBR[7]ö%Anarwiaö%SBR[9]ö%CODö(mgõL-1)976372163928859.295.510580759.593NH4+2Nö(mgõL-1)997071623.895.4899.484459.1143.08393TNö(mgõL-1)9391816451.90.194.3125888.1932SBR,Anarwia,,LCOD300mgöL,NH4+2N10mgöL,(GB1859622001)L1.2(12,20003000m3öd)AnarwiaL6000m3,SBR6800m3LTilche[10]AnnaSBRL150m3öd,2SBR,SBR1250m3,2500m3L3L3AnarwiaSBRTable3ThetreatmentresultofpiggerywastewaterbyfullscaleAnarwiaandSBRAnarwiaö%SBR[10]ö%CODö(mgõL-1)40151456121637993.197.4645633694.8NH4+2Nö(mgõL-1)55211143.59.998.299.55005.4898.9TNö(mgõL-1)75451.893.169530.2695.6pH7.27.56.67.5:L,AnarwiaCODNH4+2NTN(23)L3,(Anarwia)Anna(SBR)L,Anarwia,SBRL22SBR,,,AnarwiaSBR,L,AnarwiaSBRL2.110,58000,1200tLSBRAnarwia12LSBR,,SBR;Anarwia,65%,35%,SBRL,4L(5)4L(1)(1525);036()30(2)(GB1859622001),COD400mgöL,BOD5150mgöL,SS200mgöL,NH32N80mgöL,pH69;(3)2.4kgCODöm3õd,0.10kgMLSSökgCOD(0.0250.20kgMLSSökgCOD),0.40m3ökgCOD;1SBRFig.1TheflowchartofpiggerywastewatertreatmentbySBR2AnarwiaFig.2TheflowchartofwastewatertreatmentbyAnarwiaprocess4Table4CharacteristicofpiggerywastewaterandeffluentoftreatmentunitmgöLAnarwiaCODBOD5SSNH4+2NT2NSBRCODBOD5SSNH4+2NT2N100006500400083011001000065004000830110090006200260083010809000620026008301080720050001800830100072005000180083010001400300630840850343019451040837903SBR3403012086034030120860::1200tödL1366,:Anarwia5AnarwiaSBRTable5DesignparameteroftreatmentunitofAnarwiaandSBRö(kgBOD5õm-3õd-1)ö(kgBOD5õkg-1MLSSõd-1)HRTödökgO2õd-1ökgõd-1öm3õd-1Anarwia0.010.49602.430.08333.027840.2696SBR0.500.103.9535513547.51535530102784SBR0.010.4960SBR0.500.1010.010490254410.41104903504:3kgCODöm3õd;33kgCODökgMLSSõd.(4),2,0.10kgBOD5ökgMLSSõd(0.15kgBOD5ökgMLSSõd),5000mgMLSSöL;(5)SBR[15]L2.25,SBR(0.10kgBOD5ökgMLSSõd),Anarwia(HRT)SBR156%L,HRT38.6%LAnarwiaSBR16.4%95.9%L,Anarwia-2784m3ödL2.356LSBR,Anarwia,SBRL,AnarwiaSBR11.8%L6AnarwiaSBRTable6ComparisonofinvestmentforAnarwiaandSBRAnarwiaöSBRö1400öm312m30.4812m30.48230000ö26.026.03350öm3480m316.8480m316.84500öm33600m3180.05400öm3240m39.66SBR350öm34680m3163.812000m34207400öm315m30.615m30.68400öm3500m320.0500m320.093000ö103.082.41080000ö324.0540.0236()306AnarwiaSBRContinuationofTable6Comparisonofinvestmentf