CODTP比及NO2NTP对短程反硝化聚磷的影响张小玲

33COD/TPNO2--N/TP710064COD/TPNO2--N/TPA/A/OSBR。COD/TP、。COD/TP28.5COD/TP21PHBCOD/TPCOD/PO43--P25。NO2--N/TPCOD/TPCOD/TP=25NO2--N/TP3。NO2--N/PO43--P5SBRNO2-。NO2--N/TP1.8NO2-。COD/PO43--PNO2--N/PO43--PX172Adoi10.3969/j.issn.1003-6504.2010.12.0081003-6504(2010)12-0028-04EffectsofCOD/TPRatioandNO2--N/TPRatioonthePerformanceofDenitrifyingPhosphorusRemovalwithNitriteasElectronAcceptorZHANGXiao-lingLIUXi-xiangZHAOJian-qiangSchoolofEnvironmentalScienceandEngineeringChang’anUniversityXi’an710064ChinaAbstractA/A/OSBRprocesswasusedtotreatsyntheticdomesticwastewaterandeffectsofCOD/TPratioandNO2--N/TPratioontheperformanceofdenitrifyingphosphorusremovalprocesswasinvestigated.ResultsindicatedthatamountandreleasingvelocityofphosphateinanaerobiczoneincreasedasCOD/TPratioincreasedbutwhenratioofCOD/TPwas28.5surpluscarbonsourceswentintoanoxiczonewhichresultedinreductionofnitritebyexternalcarbonsourcesinhibitingphosphateaccumulatinginanoxiczone.WhenratioofCOD/TPwas21carbonsourceswerenotenoughforbeingturnedintoPHBphosphorusremovalefficiencyinanoxiczonedecreasedmoreoverlimitedCODloadingmaysurpressthedevelopmentofpolyphosphateaccumulatingorganismsPAOsleadingtoestablishmentofmicrobialcommunitieswithoutpolyphosphateaccumulation.ThemicrobialcommunitiesweredominatedbyglycogenaccumulatingorganismsGAOs.WhenratioofCOD/PO43--Pwas25theperformanceofA2/OSBRwasthebest.TheappropriateNO2--N/TPratiointheinfluentwastewaterwasrelatedtoratioofCOD/TP.OntheCOD/TPratioof25theoptimumratioofNO2--N/TPwas3.WhenratioofNO2--N/TPwas1.8denitrifyingphosphorusremovalprocessceasedowingtothelackofnitrite.WhenratioofNO2--N/PO43--Pwas5phosphorusremovalefficiencyofthesystemdecreasedbecauseofnitriteintheanaerobicleftoverbythepreviouscycle.KeywordsCOD/TPratioNO2--N/TPratiodenitrifyingphosphoruswithnitriteaselectronacceptor、、。NO3-[1-3]NO2-[4-5]。NO2NO3-。COD/TPNO2--N/TP。2009-11-0[e-mail]。EnvironmentalScience&Technology3312201012Vol.33No.12Dec.20101211.1SBRSBR1SBR5L4L。SBR、、、25℃DOpHDOpH。。。SBR5min120min5min、180min、45min15min。1.2。SBR12。2[5]1SBR10mgP/gSS·h97%TP10mg/LCOD/TPNO2--N/TP。2.12.1.1COD/TP1COD/TP=28.5。2COD/TP=28.553SBR。2COD/TP=28.557.5mg/L35.4mg/L34.8mg/LNO2--N99%。360mg/LCODCOD/TP=28.5。2COD/TP=25。4COD/TP=2555SBR。1Table1Compositionofsubstratemg/L)COD(mg/L)()300~500NH4+-N(mg/L)()10~15NO2--N()18~50TN15~85TP(mg/L)()102Table2AnalyticalmethodsNH4+-NNO2--NN-(1-)—NO3--NPO43--PCODCOD/TPNO2--N/TP29334COD/TP=2580%~90%NO2-99%COD/TP25。5TP45.97mg/LCOD。3COD/PO4--P=21。6COD/TP=21COD=210mg/LTP=10mg/L57SBR。6COD/TP=21。PHBVFAPO43-Poly-P[14]。743minTPC/P21。2.1.2COD/TPSBR。5。5COD/TP。、pH、、ORP[6-7]。2.1.33310mg/LNO2-30mg/L、28mg/L、60mg/LCOD2h。COD8。8CODCOD330min8.706mg/(gSS·h)、1.028mg/(gSS·h)、-0.122mg/(gSS·h)16.2mg/L、9.4mg/L、-6.2mg/L60mg/LCOD1h8.1mg/L。3COD/TPTable3AnaerobicreleaseandratiosatallCOD/TPratiosCOD(mg/L)285250210COD/TP28.52521(mgP/gSSh)16.5114.5911.01(mg/L)44.3434.8625.41(mgP/gSSh)6.064.982.343012。。。2.2NO2--N/TP10mg/L271.344mg/L3318mg/L、30mg/L、50mg/LNO2--NNO2--N/TP1.8、3、57。pH6.3~6.520~25℃2.5hNO2-68.8%、82.5%、65.2%7.137mgP/gmLSS·h、10.024mgP/gMLSS·h、6.531mgP/gMLSS·h。NO2--N/PO43--P5NO2-1.8mg/LNO2--N/TP3。pH6.3~6.520~25℃。NO2-NO2-NO2。pH6.3~6.520~25℃NO2--N/PO43--P53mg/L。COD/PO4--P。NO2--NPO4--PCOD/PO4--P。COD、TP、TKN。A/A/O。31COD/PO4--P25COD/PO4--P25NO2--NCOD/PO4--P25。2COD0mg/L、28mg/L、60mg/L30min8.706mg/(gSS·h)、1.028mg/(gSS·h)、-0.122mg/(gSS·h)16.2mg/L、9.4mg/L、-6.2mg/L60mg/LCOD1h8.1mg/L。3NO2--N/PO43--PCOD/PO4--PCOD=250mg/L、PO43--P=10mg/LCOD/PO4--P25pH=6.3~6.5=20~25℃30mg/LNO2--N97.26%NO2--N/PO43--P3。[][1]MinoTvanLoosdrechtMCM,HeijnenJJ.Microbiolo－gyandbiochemistryoftheenhancedbiologicalphosphateremovalprocess[J].WaterRes19983213139-3207.[2]JYHuSLOngWJNg.Anewmethodforcharacteriz－ingdenitryingphosphorusremovalbacteriabyusingthreedifferenttypesofelectronaccepter[J].WaterRes2003371871-1883.[3],.[J].2004241:45-49.LiYong-zhi,WangShu-ying,WuFan-song,etal.Selectionandenrichmentofdenitrifyingphosphateaccumulatingbacteriainbiologicallyenhancedphosphateremovalprocess[J].ActaScientiaeCircumstantiae,2004,24(1):45-49.(inChinese)[4]JensMeinholdEvaArnoldStevenIsaacs.Effectofnitriteonanoxicphosphorusremovalactivatedsludge[J].WaterRes19993381871-1883.55COD/TPNO2--N/TP3112＞＞pH＞TPpH＞＞＞。COD、NH4+-NTP10/10000、35℃、pH9、100r/min67.83%、70.29%、70.59%。10/10000、35℃、pH9、100r/min。。31COD、NH4+-NTP。210/1000035℃COD、NH4+-NTPCOD、NH4+-NTP。310/1000035℃pH9100r/min。[][1].[J].2007525:43-44.LiuYing-liChenZhe.StudiesonmeasuresofpreventingentrophicationofwaterbodyofYangheReservoir[J].ChinaWaterResource2007525:43-44.inChinese[2].[J].200666:45-49.LiuJian-fuWangPingLiHan-dongetal.Researchandapplicationofdominantbacteriaintreatmentofalcoholwastewater[J].JournalofSafetyandEnvironment200666:45-49.inChinese[3].[J].2006297:75-76.LiLinZhangQing-min,YangJian-hua.Treatmentofwastewaterofsweetpotatostarchwithcombinedmicrobialflocculation[J].EnvironmentalScience&Technology2006297:75-76.inChinese[4].[J].2001,225:122-125.XiBei-douLiuHong-liangMengWei,etal.Compostingprocessofmunicipalsolidwastewithhighe