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3012201012ActaScientiaeCircumstantiaeVol．30No．12Dec．2010No．J51502SupportedbytheLeadingAcademicDisciplineProjectofShanghaiMunicipalEducationCommissionNo．J515021977—*E-mailbidongsu@126．comBiographyBIDongsu1977—maleassociateprofessorPh．D．*CorrespondingauthorE-mailbidongsu@126．com．2010．J．30122445－2449BiDSGuoXPLuF．2010．Hydrolysisandbiologicalreleasemechanismsofphosphorusfromphosphorus-richwasteactivatedsludgeduringanaerobicdigestionJ．ActaScientiaeCircumstantiae30122445－244912*341．2002352．2000923．2000834．2100362010-04-062010-06-092010-07-19A/O．SOP/PHAPHA/．0253-2468201012-2445-05X703AHydrolysisandbiologicalreleasemechanismsofphosphorusfromphosphorus-richwasteactivatedsludgeduringanaerobicdigestionBIDongsu12*GUOXiaopin3LUFeng41．ShanghaiInstituteofTechnologyschoolofChemicalandEnvironmentalEngineeringShanghai2002352．EnvironmentalScienceandEngineeringSchoolofTongjiUniversityShanghai2000923．HongkouEnvironmentalMornitoringStationShanghai2000834．EnvironmentalMonitoringCenterofJiangsuProvinceNanjing210036Received6April2010receivedinrevisedform9June2010accepted19July2010AbstractThereleasemechanismsofphosphorusfromphosphorus-richwasteactivatedsludgearediscussedbasedonanaerobicdigestionexperiments．ThesludgeusedinthisstudywasobtainedfromasewagetreatmentplantinwhichtheA/Oprocesswasused．TheresultsindicatedthattheratioofsolubleorthophosphatesSOPreleasetopolyhydroxy-alkanonatesPHAproductionobtainedfromanaerobicdigestionexperimentsofwasteactivatedsludgewashigherthanthatfromtheanaerobicprocessofactivatedsludgeinanEBPRwhichsuggestedthathydrolysisisacontributingmechanismtophosphorusrelease．TheratioofPHAproductiontoconsumedhepatininwasteactivatedsludgewaslessthanthatinenhancedbiologicalphosphorusremovalEBPRactivatedsludgewhichsuggestedthatthehepatinwasconsumedtonotonlyreleasephosphorusbutalsoforotherreasons．Thepresenceofabacterialinhibitorwasadisadvantagetoboththehydrolysisandbiologicalreleasemechanismsintheanaerobicdigestionsystem．Keywordsphosphorus-richwasteactivatedsludgeanaerobicdigestionhydrolyzedreleasemechanismbiologicalreleasemechanism1IntroductionEBPR、．EBPR．．3050%Gregoretal．2008．2006．．Kamiyaetal．2001200620062006．．Yuetal．2003Wangetal．20092006PHA2005．、、．．2Materialsandmethods2．1A/O20087．30min1．pH、SCODCOD、SOPVSSTP、PHA、VSS．VSS3．20%PHAEBPA．2．250cm50cm40L．20LR1、R215LR15．00gHgCl220092002．18dN210r·min1．1h．80r·min－130min1．1Table1InitialcharacteristicsofconcentratedwastesludgepHSOP/mg·L－1SCOD/mg·L－1VSS/mg·L－1TP/mmol·g－1PHA/mmol·g－1/mmol·g－16．781．8042．0011540．001．210．694．531R1R2Fig．1ReactorsR1andR22．3SOP、VSS、TP、PHA、．SOP0．45μmAPHA1998．VSSAPHA1998．、TP、PHAPHAComeauetal．1988Smoldersetal．1994TP-APHA1998VSS．2．4SOPrSOP=CSOP2－CSOP1/t1VSSrVSS=CVSS1－CVSS2/t2TPrTP=31×CTP1CVSS1－CTP2CVSS2/1000t3644212PHApPHA=12×CPHA1CVSS1－CPHA2CVSS2/1000t4rG=12×CG1CVSS1－CG2CVSS2/1000t5C1、C2、2．t．3ResultsR1R2SOP0．90mg·L－183．70mg·L－1102．90mg·L－14．60mg·L－1·d－15.60mg·L－1·d－12．2aR1、R2VSS5770．00mg·L－13150．00mg·L－1、2833．00mg·L－1145．56、163．17mg·L－1·d－1．HgCl24dR1R2．2bR1、R2TPP1．20mmol·g－10．78、0．43mmol·g－10．023、0．043mmol·g－1·d－1．R1TP4dVSS2aVSSTP．R2VSSTP4～8d．2cR1、R2PHAC0.42mmol·g－11．42、3．36mmol·g－10．056、0．16mmol·g－1·d－1．2dR1、R24．50mmol·g－13．56、2．85mmol·g－10．052、0．091mmol·g－1·d－1．2R1R2Fig．2Contentsofkeycomponentsinthetworeactors4Discussion4．12R1、R2EBPR．VSS．VSS．VSS．744230EBPRSOP、PHAR1、R2R1、R2．PHAPHAWangetal．2002．SOP/PHAR1＞R2＞PHA．、．SOP/．．EBPRPHA/PHASatohetal．1998．＞R2＞R1PHA．2Table2ComparisonbetweenactivatedsludgeandwasteactivatedsludgeSOP/mg·L－1·d－1VSS/mg·L－1·d－1TP/mg·L－1·d－1PHA/mg·L－1·d－1/mg·L－1·d－1SOP/PHA/mg·mg－1SOP//mg·mg－1PHA//mg·mg－1468．00576．00345．000．811．351．66R14．60145．567．450．419．8311．210．460．041R25．60163．179．513．7711．921．480．470．32Pijuanetal．2005SBR2h3．5h25min．4．2R1R2R1、R2TP61．70%、58．90%60%．R1VSS145．56mg·L－1·d－1R2VSSR117．61mg·L－1·d－1．R1HgCl24dVSSVSS．VSSHgCl2．R2PHAR13．36、2．09mg·L－1·d－1．R2R1．/PHAR11mgPHAC11．21mgR21．48mgPHA．R2R1R2R1HgCl2HgCl2．5Conclusion1VSSEBPR．EBPR．2PHA．3HgCl2VSSVSSHgCl2HgCl2．1977—．844212．4220．ReferencesAmericanPubicHealthAssociationAPHA．1998．//Standardmethodsfortheexaminationofwaterandwastewater20thedM．WashingtonDCAmericanPublicHealthAssociation．254—516ComeauYHallKJOldhamWK．1988．Determinationofpoly-hydroxybutyrateandpoly-hydroxyvalerateinactivatedsludgebygas-liquidchromatographyJ．ApplEnvironMicorobiol542325—2327．2005．J．2591164—1169DouJFLuoGYLiuX．2005．ThemetabolicmechanismofanaerobicphosphorusreleaseanditskineticanalysisduringbiologicalphosphorusremovalprocessJ．ActaScientiaeCircumstantiae2591164—1169inChineseGregorDZ．MilenkoR．2008．Aerobicandtwo-stageanaerobic-aerobicsludgedigestionwithpureoxygenandairaerationJ．BioresourceTechnology99100—109KamiyaHIshitobiYInoueTetal．2001．EffluxesoforganicphosphorusDOPandphosphatefromthesedimenttotheoverlyingwaterathightemperatureandlowdissolvedoxygenconcentrationconditionsinaneutrophicbrackishlakeJ．JapaneseJournalofLimnology62111—21．2009．J．311117—20LiJYZhaoQXWangJetal．2009．ComparativestudyonthebiotoxicityofheavymetalspollutantsJ．EnvironmentalPollutionProtection＆Control311117—20inChinese．2006．-J．1948—13LiuDMJiangXJinXCetal．20