缺氧条件下活性污泥反硝化和释磷对单一碳源的竞争_英文_彭赵旭

BIOTECHNOLOGYANDBIOENGINEERINGChineseJournalofChemicalEngineering,18(3)472—477(2010)CompetitionforSingleCarbonSourceBetweenDenitrificationandPhosphorusReleaseinSludgeunderAnoxicCondition*PENGZhaoxu(彭赵旭)1,PENGYongzhen(彭永臻)1,2,**,GUILijuan(桂丽娟)1andLIUXuliang(刘旭亮)11SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China2CollegeofEnvironmentandEnergyEngineering,BeijingInstituteofTechnology,Beijing100022,ChinaAbstractInordertoinvestigatethecompetitionforcarbonsourcebetweendenitrificationandphosphorusreleaseprocesses,simultaneousphosphorusreleaseanddenitrificationinsludgeoperatedinanoxic,aerobicmodearein-vestigatedbyvaryingtheratioofinfluentCODtonitrogenouscompoundconcentrationunderanoxicconditionus-ingalab-scalesequencingbatchreactor(SBR).Theresultsshowthatthenitratereductionrateisnearlyindepend-entoftheratioofinfluentCODtonitrateunderanoxiccondition.MoreNOx−-Nintheinfluentleadstoless34PO−-Preleaseduringthefeedingperiod.However,34PO−-Preleaseproceedsatal