强化生物除磷体系中反硝化聚磷菌的选择与富集

强化生物除磷体系中反硝化聚磷菌的选择与富集文章编号:025325468(2004)0120045205中图分类号:X703文献标识码:A强化生物除磷体系中反硝化聚磷菌的选择与富集李勇智1,王淑滢2,吴凡松1,代晋国1,彭永臻1,2(11哈尔滨工业大学市政环境工程学院,哈尔滨150001;21北京工业大学环境与能源工程学院,北京100022)摘要:采用SBR反应器,对以硝酸盐作为电子受体的反硝化聚磷菌的选择和富集作了研究.结果表明,反硝化聚磷菌存在于传统的强化生物除磷体系之中.经过3个阶段的选择和富集,反硝化聚磷菌在聚磷菌中的比例从15%上升到73%.稳定运行的强化反硝化生物除磷体系具有良好的强化生物除磷和反硝化脱氮性能,缺氧结束时体系中磷浓度小于1mgΠL,除磷和脱氮效率分别大于94%和95%.关键词:反硝化除磷;缺氧吸磷;生物除磷;反硝化聚磷菌;聚磷菌;硝酸盐SelectionandenrichmentofdenitrifyingphosphateaccumulatingbacteriainbiologicallyenhancedphosphateremovalprocessLIYongzhi1,WANGShuying2,WUFansong1,DAIJinguo1,PENGYongzhen1,2(11CollegeofMunicipalandEn2vironmentalEngineering,HarbinInstituteofTechnology,Harbin150001;21CollegeofEnvironmentalandEnergyEngineering,BeijingUni2versityofTechnology,Beijing100022)Abstract:Theselectionanddominanceofdenitrifyingphosphateaccumulatingorganisms(DNPAOs),whicharecapableofutilizingnitrateaselectronacceptor,wasinvestigatedinalaboratory2scaleSequencingBatchReactor(SBR)1TheresultsobtaineddemonstratedthatDNPAOswerealreadypresentinth