奥贝尔氧化沟工艺中活性污泥膨胀及种群分析李茜

361Vol．36No．120173JournalofYananUniversityNaturalScienceEditionMar．2017DOI10．13876/J．cnki．ydnse．2017．01．0787160007、、。20151220164MicrothrixparvicellaSVI。X703.1A1004－602X201701－0078－04。1“”。、、、2。、、pH、、F/M、3。4。、。7、、。11.1201511201651025500mL。1.2SVI5。MLSS。。50μL2016-07-01YDK2015－591987—。BX532001000、、。。3ind/mL。SPSS11.0。22.1、7。SVI、MLSSF/MT。7SVI1。SVI150mL/g6。1201511SVISVI＜150mL/g201512SVI＞150mL/g20151220163SVI＞200mL/g2016320164SVI150mL/g＜SVI＜200mL/g2016420165SVISVI＜150mL/g。201512201645。1SVISVI、1。1SVI2015/11/102015/11/252015/12/102015/12/252016/1/102016/3/102016/3/252016/4/102016/4/252016/5/10SVImL/g9413019622723627528817814017MLSSmg/L2436292421453150276032232920240942100.130F/Mkg/kgMLSS·d0.0860.0940.1870.1800.1610.1150.1370.1400.1422910T℃1210956.56913.5151171MLSS2000～3000mg/LMLSSF/M。F/MSVI2。2SVIP0.05F/MSVI。2SVIR2TF/MSVI－0.730*0.437*P＜0.05971。20151120165SVI2。2SVI7。2SVI10℃SVI200mL/g300mL/gSVI150mL/g。2.2、。11、3、43。abc33Jenkins84SVI150mL/g6SVI200mL/g5SVI200mL/g。、MicrothrixparvicellaM.P。M.P5。M.P、、9。M.P、DO、10。。2.311。。SVI4。4SVISVI3。3SVIR2SVI0.871＊＊＊＊P＜0.01SVIP＜0.01。4。12。08、。。3120151220164SVI2Microthrixparvicella3SVI。。1.M.2015.2.J.2009351231－34.3.J.200526250－52.4.R.2006283157－159.5.J.20001625－8.6.A2OJ.200828121074－1078.7.J.2010361143－45.8JenkinsDRichardMGDaiggerGT.Manualonthecau-sesandcontrolofactivatedsludgebulkingandfoaming2ndedM.MichiganLew1993.9MartinsAMPVanLoosdrechtMCMHeijnenJJ.Effectoffeedingpatternandstorageonthesludgesettle－a-bilityunderaerobicconditionsJ．WaterResearch200337112555－2570.10MamaisDAndreadakisANoutsopoulosCetal.CausesandcontrolstrategiesofMicrothrixparvicellabulkingandfoaminginnutrientremovalactivatedsludgesystemsJ.WaterScienceandTechnology1998374259－17.11.A/OMBRJ.201112145－150.12.J.20137125047－5050.ResearchonActivatedSludgeBulkingandChangesofMicrobialCommunityStructuresinOrbalOxidationDitchProcessLIQIANYANGGANGCollegeofPetroleumandEnvironmentalEngineeringYan'anUniversityYan'an716000ChinaAbstractActivatedsludgebulkingchangesofbacterialcommunitystructuresandthedensityofrotifersweree-valuatedinOrbaloxidationditchprocessduringaperiodof7months．ActivatedsludgebulkingoccurredintheprocessandlastedfromDecember2015toApril2016．SurveysontherelationsofSVIvaluewithdifferentparame-tersrevealedthatSVIvaluehadthestrictnegativeassociationwithtemperaturewhichisamainfactorleadingtosludgebulking．TheresultsalsoindicatedthatMicrothrixparvicellawhichhadagrowthadvantageunderlowtem-peraturewasthedominantfilamentousbacteriaduringsludgebulkingperiod．ByremovingfreebacteriaandthesuspendedparticlerotiferscanbetheindicatorofactivatedsludgesettlingcharacteristicasthedensityofrotifersshowedthepositiveassociationwithstudgevolumeindexSVI．KeywordssludgebulkingtemperatureMicrothrixparvicellarotifers181