聚烃基烷酸转化对强化生物除磷影响研究.pdfVIP

聚烃基烷酸转化对强化生物除磷影响研究 刘燕，行智强，陈银广，周琪 (同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室，上海200092) 除磷系统中聚烃基丁酸(PHB)和聚烃基戊酸(PHV)的转化对磷吸收／释放及去除率的影响．结果显示，磷的释放／吸收和去除 化的影响，但磷的去除率却主要依赖于PHV的合成与降解；对于不同比例丙酸／乙酸废水驯化污泥，sBR2比SBRl污泥的 PHB合成和降解能力增强，PHV合成和降解能力减小，生物除磷效果平均增加16．69％．因此，进水丙酸／乙酸比例及驯化影 响聚磷微生物的PHB／PHV转化量，进而影响对磷的吸收／释放和除磷效果，PHB与PHV的转化量应作为生物除磷系统的关 键调控因素考虑． 关键词：强化生物除磷；聚羟基烷酸(PHA)；聚羟基丁酸(PHB)；聚羟基戊酸(PHv) 中图分类号：x703文献标识码：A文章编号：0250—3301(2006)06．1103。04 ResearchOn Forma toEnhanced PolyhydroxyalkanoateKeyAspect Biological TransfOrmation Phosphorus LIU Yan，XING Qi Zhi—qiang，CHENYin—guang，ZHoU ofPollution(bntrolandReSourcesSch∞1ofEnvironmentalScience (StateKeyLaboratory Reuse， and Engineering，Ton西i University，Shanghai200092，China) on Abstract：To theinfIuenceofPHBandPHVfomed andremovaI enhanced investigate phosphorus(P)release，uptake during batch wereconductedwithbiomassacclimatedwith removal(EBPR)，anaerobic／aerobicexperiments bi0109icalphosphorus propionic toaceticacidcarbonmolarratiosof0．5and2ontwo batch and sequencingreactorS(SBRlSBR2)．Statisticallysignificant correIationsbetween andformandP andremovalwereobserved(R2O．90)． poIyhydroxyaIkanoate(PHA)quantityreIease／uptake The showedthatforbiomassculturedwith wastewaterPreleaseand werebothafunctionof regressioncoefficients customizing uptake PHBbutnotof Premovalwas becauseofPHVasthe ratherthanPHV．Forbiomass PHV，buthigher largely predominanttype culturedwithdifferentratiosof toacetic SBR2b