不同外加碳源生物滤池的深度处理特性与经济分析

1111221．3000742．110168、、、5DNBFNO－3－N、CODSS。5DNBFNO－3－N70．2%、68．0%、73．5%、80．6%82．3%7．51、4．10、4．89、5．144．63gCOD/gNO－3－N＞＞＞＞。CODSSA。DNBF。X703C1000－4602201115－0091－04AdvancedTreatmentCharacteristicsofBiofilterwithDifferentExternalCarbonSourcesandItsTechno-economicAnalysisXIAQiong-qiong1YANXiu-qin1ZHANGXiang-yang1ZHANGWei1ZHANGSu-fang2JIANGBai-yi21．NationalEngineeringResearchCenterforUrbanWaterandWastewaterTianjin300074China2．SchoolofMunicipalandEnvironmentalEngineeringShenyangJianzhuUniversityShenyang110168ChinaAbstractUsingglucosemethanolethanolaceticacidandsodiumacetateascarbonsourcere-spectivelytheremovalofNO－3－NCODandSSindenitrifyingbiofilterDNBFusedasadvancedtreatmentaftersecondarytreatmentwasinvestigatedandthetechno-economicanalysiswasmade．TheresultsshowthattheremovalratesofNO－3－Nare70．2%68．0%73．5%80．6%and82．3%re-spectivelyandthesuitableC∶Nratiosare7．514．104．895．14and4．63gCOD/gNO－3－Nre-spectivelywhenaddingtheabove-mentionedcarbonsources．Theorderrelationofthedenitrificationratesissodiumacetate＞aceticacid＞ethanol＞glucose＞methanol．TheeffluentCODandSSconcentrationscanmeetthefirstlevelAdischargestandardafteraddingappropriatequantityofcarbonsource．Thetech-no-economicanalysisindicatesthatsodiumacetatecanbeusedasthepreferredcarbonsourceforDNBF．Keywordsdenitrifyingbiofilterexternalcarbonsourcetechno-economicanalysis2008ZX07314－007·19·271520118CHINAWATER＆WASTEWATERVol．27No．15Aug．2011。DNBF、、12。DNBF。、、、DNBF。11.1COD23～44mg/L36mg/L、NH+4－N0．39～5．02mg/L3．68mg/L、NO－3－N21．00～33．75mg/L27．88mg/L、SS9～62mg/L37mg/L、10．1～14．2℃12．6℃。1.2110cm2．3m10cm1．4m。3～5mm。1．5m3/m2·h。1Fig．1Schematicdiagramofexperimentalreactor1.3COD3NO－3－NNH+4－N3Hach。22.1COD/NO－3－N=8．52、、、570．2%、68．0%、73．5%、80．6%82．3%NO－3－N7．71、8．65、7．07、5．074．76mg/L。。5NO－3－N2。NO－3－N。76cm30minNO－3－N、109cm44minNO－3－N。2NO－3－NFig．2NO－3－NremovaleffectalongfilterNO－3－N。ATCA456TCA。30d1d。2.2CODSSCODSS。SS21～58mg/L、COD89～144mg/L。·29·2715．watergasheat．comCOD50mg/LA。SS10mg/L4SS。SS。。CODSS3。76cm30minCOD50mg/L。76cmCOD3109cm。CODSS142cm57minSS10mg/L。DNBFSS。3CODSSFig．3CODandSSconcentrationalongfilter2.3。1。、、。NO－3－N。1Tab．1AppropriateC∶NundervariouscarbonsourcesCOD/mg·L－1NO－3－N/mg·L－1/gCOD·g－1NO－3－N7710．257．51438．794．89438．435．144811．704．106814．684．632.42。2Tab．2Techno-economicanalysisforvariouscarbonsourcesCOD/gCOD·g－10．901．861．080．751．74NO－3－NCOD/gCOD·g－17．544．895．144．634．10NO－3－N/g·g－18．382．634．766．172．36/·t－125006800295028003000NO－3－N/·kg－1NO－3－N20．9517．8814．0417．297．082011331。2、。。40min420min。。3·39·．watergasheat．com2715、、。3Tab．3Safetycharactersandmanagementcostsofvariouscarbonsources、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、3①、、、DNBFNO－3－N70．2%、68．0%、73．5%、80．6%82．3%。②NO－3－NNO－3－N30min、44min。③、、、7．51、4．10、4．89、5．144．63gCOD/gNO－3－N。④DNBFCODSSA。⑤、、、DNBF。1PujolR．Processimprovementsforupflowsubmergedbio-filtersJ．Water21200032125－29．2SéguretFRacaultY．HydrodynamicbehaviorofafullscalesubmergedbiofilteranditspossibleinfluenceonperformanceJ．WaterSciTechnol1998388/9249－256．3．4M．2002．4ChenYDBarkerJFGuiL．Astrategyforaromatichy-drocarbonbioremediationunderanaerobicconditionsandtheimpactsofethanolAmicrocosmstudyJ．JContamHydrol2008961/[e-mail]2011－05－09·49·2715．watergasheat．com