第22卷第6期合肥工业大学学报(自然科学版)Vol.22№61999年12月JOURNALOFHEFEIUNIVERSITYOFTECHNOLOGYDec.1999陈 慧(, 230009) :。,。,。:;;:X703 :A :1003-5060(1999)06-0124-05Thecauseandcontroloffilamentousbulkinginlow-rateoxidationditchCHENHui(SchoolofCivilEngineering,HefeiUniversityofTechnology,Hefei230009,China)Abstract:Atoxidationditchtreatingurbansewageanddomesticsewage,thereexiststheproblemoffilamentousbulking.Inthispaper,thephysiologicalcharacteristicsandkineticfeaturesofzoogleaandfilamentousbacteriainactivatedsludgeareanalyzed,andthemainfactorscausingthefilamentousbulkingoflow-rateoxidationditchareinvestigated.Themethodsforimprovingthecontroloffila-mentousbulkingoftheoxidationditchareproposed,andtheusingofchlorinateforsterilizingfilamen-tousbacteriaisintroduced.Keywords:oxidationditch;filamentousbacteria;bulking0.08kgBOD5/(kgMLSS·d),。,。,SVI。,,,,,。,,。:1999-06-29: (1957-),,,.1 1.1 。,,,、、、,。、。,。,,、。,。,,,,,(、),,。,,,。,,。1.2 Monod,_=1XdXdt=_maxSKs+S _——_max——X、S——Ks——ChudobaMonod[1]。,,_maxKs。Monod,Ks,。12,,[1]。1 2 1.3 BOD5,BOD5100~150mg/L,BOD5120~180mg/L。,BOD530mg/L。125第6期 陈 慧:低负荷氧化沟工艺丝状菌膨胀的成因与控制,,。,,。1.4 (DO)(F/M)。、,,。2,,。(F/M),,。(F/M),,F/M,DO,DO,3[2]。3 DOF/M0.1kg/kg·d。1.5~2.0kg/L。3,DO。,,,DO1.5~2.0mg/L,DO。。,DO2~3mg/L。,DO6mg/L,。,;,NO-3。,,,。1.5 1.5.1 污水中营养成份BOD5∶N≥35∶1,。BOD5∶N∶P100∶5∶1。,、。1.5.2 混合液pH,pH6.7。,pH6.5~8.5。pH,。pH6~9,pH。,,,。1.5.3 气温的影响,,,。,,,。2 2.1 4。,,10~20min,,126 合肥工业大学学报(自然科学版) 1999年第22卷第6期,。4 ,,,。,,,。2.2 ,5。5 ① ②,(15d),,NO-3。,NO-3,,NO-3,。,。,,NO-3,,。,。2.3 ,,,3。,。2.3.1 氯氧化剂杀菌原理(Cl2)。(HOCl)(OCl-)。Cl2+H2OHOCl+HClHOClH++OCl-Cl2、HOClOCl-,,,。,。:①,,,;②,,,,。,,,。2.3.2 加氯点位置与加氯量,127第6期 陈 慧:低负荷氧化沟工艺丝状菌膨胀的成因与控制。。10~15min,。,。7d。Cl235mg/L,2kgCl2/(1000kg·d)[1],。,,SVI,,。[ ][1] .[M].:,1992.90,17,115.[2] ,,.[M].:,1998.118.[3] .[J].,1992(7):11~12.( )(123)2 2 HFC1061(2801152E0),2。,、、、、、,DXF。OUTARC:2801152E0 1 196.48 171.34 50.00196.48 121.34 243.56 154.52 702801152E0 1 426.95 171.34 50.00379.86 154.52 426.95 121.34 70、,,。[ ][1] , , ,.CAPP[J].,1995,6(6):28~31.[2] HodsAElmaraghy.EvolutionandfutureperspectivesofCAPP[J].AnnalsoftheCIRP,1993,42(2):739~751.[3] .CAPP[D].,1999.[4] .[M].:,1995.( )128 合肥工业大学学报(自然科学版) 1999年第22卷第6期