供氧模式对序批式活性污泥反应器硝化性能的影响彭党聪

＊　＊彭党聪(,710055)　Nicolas.Bernet(LBE-INRANarbonne,France)　采用非固定氧供给模式和固定氧供给模式对序批式活性污泥反应器的硝化性能进行了研究。结果表明供氧模式对序批式活性污泥反应器的硝化能力、硝化产物和污泥组成有重要影响。在非固定氧供给模式下,亚硝酸化和硝酸化同时进行,最终反应产物为硝酸盐。在固定氧供给模式下,亚硝酸化和硝酸化顺序发生,如果反应时间不足,出流中将含有大量亚硝酸盐。亚硝酸菌具有碳氧化菌的饱食-饥饿(feast-famine)能力;而硝酸菌则没有。饥饿对亚硝酸菌在低氧下的氧化起着关键作用。　序批式活性污泥反应器　硝化　供氧模式1　,,,,[1]。,。,,,。,。,:。,(DO)2～3mg/L,,;,,(a);　　(b)1　、10　　　199912176DOI:10.13205/j.hjgc.1999.06.002,,DO(),;,,DO,,。、、。,。DO,;DO[2],,。,。,,。2　2.1　实验装置系统2。SBR10L,6L。:(2　)2.0h,()4.0h,1.5h,0.5h。()3L,0.67d。25±1℃。pH6%Na2CO3(7.4)。2.2　基质组成,,:300mg/L,NH4Cl270mg/L,K2HPO4100mg/L,NaH2PO4100mg/L,1mg/L。2.3　反应器启动及运行5L1L,3.86g/L。,3,NH3-N10mg/L,,,NH3-N0.4kg/m3·d。90d。(),DO3～4mg/L。40d,(),DO,4L/min、3L/min、2L/min3,20d、15d15d。3　3.1　非固定氧供给模式下的硝化、3。,,16d,0.4kg/m3·d,95%。SS(50mg/L),,,,,3.1g/L。,30d,3.6g/L。SRT30d,SVI100mL/g。4。,NH3-NNO3-N,NH3-NNO2-N,,NO2-11　　　1999121763　4　N,。,NO2-N。NO2-N。3.2　固定氧供给模式下的硝化,DO(1d)。NH3-N,2L/min(3),DO。,2L/min,NO2-N。3L/min,DOpH5。,DO,,DO,[3],,,,,,DO,,。5　DO。SBR,,DO。,DO;,DO。,,DO,;10mg/L,,,DO,,,,DO,。　　pHDO。,,pH,,,pH,,,,();10mg/L,,,12　　　199912176pH,,,,CO2。。4L/min2L/min,、DOpH。2L/min,,,。,,,SVI100mL/g,;3L/min,SVI;2L/min,SVI200mL/g,。,2L/min。3.3　氮的损失,DO3～4mg/L,,5%,。,DO,,4L/min、3L/min、2L/min322.9%、25.7%34.3%。(),-。3.4　间歇低氧下亚硝酸菌的硝化特征,DO。DO,。,,DO,,。DO,,,。。-(feast-famine)。DO。4　,DO-,,。1　IrvinePL,WildererPA&FlemmingHC.Controlledun-steadyprocessestechnology-areview.WaterSci.Tech.,1997.1:1～102　HanakiK,WantawinC&Ohgaki.Nitrificationatlowlev-elsofdissolvedoxygenwithandwithoutorganicloadinginasuspended-growthreactor.WaterRes.,1990.2:297～3023　HandrikusJL&SaskiaG.Competitionforlimitedam-mountsofoxygenbetweenNitrosomonaseuropaeaandNi-trobacterwinogradskyigrowninmixedcontinusculture.Arch.Microbiol.,1993.2:453～459　,,1957,。。1999-04-2213　　　199912176CONTENTSEXPERIMENTALRESEARCHONTREATMENTOFCOTTONPULPDIGESTIONWASTEWATERYangJianetal(7……………………………………………………………)Abstract　Themicrobialdegradationwithacclimatedactivatedsludgeprocesswasinvestigat-edtocharacterizethebiodegradabilityofthecottonpulpdigestionwastewaterwithCODCrconcen-tration3000～4000mg/l.Theexperimentalresultsdemonstratedthatthebiodegradability(BOD5/CODCr)ofthecottonpulpdigestionwastewatercouldnotberaisedevidentlybyhydrolyt-icacidification.Ontheotherhand,TheaerobicprocessresultsingoodremovalofBOD5(85～90%)andCODCr(60～65%)respectivelywhenCODCrloadisof1.8～2.0kg/m3·d.Andsubse-quentlychemicalprecipitationresultsinmoreremovalofCODCr(63～70%)whenproperchemi-calsareadded.Keywords　cottonpulpdigestionwastewater,biologicaltreatment,chemicaltreatmentandacclimatedactivatedsludgeEFFECTSOFOXYGENSUPPLYMODELSONNITRIFICATIONPERFORMANCEOFSBRPengDangcongetal(10……………………………………………………………………)Abstract　HighammoniumnitrificationwasstudiedforaSBRfeactorwithunfixedandfixedoxygensupplyrates.Experimentalresultsshowedthatoxygensupplymodelshavesignifi-cantefectsonthenitrificationabilityandproductaswellasthecompositionofthesludgeofSBRforhighammonoumnitrification.Ammoniumandnitriteoxidationsweretakingplacesimultane-ouslywithunfixedoxygensupplymodelbutseqentiallywithfixedoxygensupplymodel.Ammoni-umoxidizersdevelopedanabilitytoendurethefluctuationofDOandnitriteoxidizersdidnot.Ex-tensivestarvationunderhighDOplayedacriticalroleinammoniumoxidationunderfollowinglowDO.Keywords　SBR,nitrificationandoxygensupplymodelAPPLICATIONOFOXIDATIONDITCHTOWASTEWALERTREATMENTOFAUTO-MOBILEINDUSTRIALESTATELinDanetal(14…………………………………………)Abstract　Accordingtothecharacteristicsofthewastewaterqualityinanautomobileindus-trialestateandusinghydrolyze-acidificationandoxidationditchprocess,thedischargedwaterqualitycanreachthe2ndclasswasterwateremissionstandard,andwedesignedtheprocessac-cordingtothe1stclasswastewateremissionstandardasbestwecan.Ourtextexplainsthecharac-terofoxidationditchandsometechenicalparametersinWTPdesign,aswellassomeexperience.Keywords　oxidationditch,automobileindustrialestate,processdesignandapplicationexpe-rienceAPPLICATIONOFANAEROBICBIOFILMSEQUENCINGBATCHREACTORTOTREATMENTOFALKALIREDUCTIONWASTEWATERINDYEHOUSEZhouHaifengetal(18)……………………………………………………………………………………Abstract　AnaerobicBiofilmSequencingBatchReactor(ABSBR)containsanaerobiccon-tactingprocessandSBRprocess,whichhasspecialworkingprinciplesandfeatures.Itsapplicationtotreatmentofalkalireductionwastewaterstatesclearlythatthisprocesshasstrongshockresis-tanceandgoodtreatingeffectivenessanditcanbeanexcellentbiochemicaltreatmentprocessofwideuseandstabletreatingresultswhenusingittogetherwithaerobicbiologicprocess.Keywords　biofilmprocess,anaerobic,SBRandalkalireductionwastewater2ENVIRONMENTALENGINEERINGVol.17,No.6,December,1999