强化生物除磷系统中主要菌群的富集和培养  

Enrichment and culture of major organism groups in enhanced biological phosphorus removal systems

作　　者：由阳[1] 袁志国 李夕耀[3] 彭永臻[1,3] 

机构地区：[1]哈尔滨工业大学市政环境工程学院哈尔滨150090 [2]Advanced Wastewater Management Centre,University of Queensland,Brisbane4072 [3]北京工业大学环境与能源工程学院北京10002

出　　处：《高技术通讯》2009年第2期200-206,共7页Chinese High Technology Letters

基　　金：国家自然科学基金(50628808);“十一五”国家科技支撑计划重点项目(2006BAC19B03)(Z0005186040421);北京市教委科技创新平台项目(PXM2008_014204_050843)资助

摘　　要：以SBR反应器为载体,接种具有除磷功能的活性污泥后分别富集了强化生物除磷(EBPR)系统中的2个主要微生物种群聚磷菌(PAO)和聚糖菌(GAO)。以P/C和碳源种类这2个关键因素作为选择性条件控制富集的方向。高P/C下以乙酸丙酸交替富集Accumulibacter;在低P/C下以乙酸富集Competibacter,以丙酸富集α-GAO。在适当pH、温度、好氧段DO、进水负荷等条件下,富集这3类微生物取得了成功,富集结果是Accumulibacter占80%,系统对PO_4^(3-)-P的去除率可达98%以上,Competibacter占90%,α-GAO也占有非常大的比例。此外一些细节如配水灭菌、配水充分溶解等因素也能决定富集的成败。This research focused on the enrichment of phosphorus accumulating organisms （PAO） and glycogen accumulating organisms （GAO） in enhanced biological phosphorus removal （EBPR） systems SBR reactors fed with activated sludge. P/C and the carbon sources were considered as two main factors to control the enrichment conditions. So high P/ C and alternate acetate and propionate were supplied to PAO, low P/C and acetate were supplied to g-GAO, and low P/C and propionate were supplied to α- GAO. Under the suitable pH, temperature, DO of the aerobic phase and load of the influent, the enrichment of these three kinds of groups was achieved with the results below： Accumulibacter reached 80% of the total bacteria, and the efficiency of P removal was over than 98 %. Competibacter could reach 90% of the total bacteria, and also, α-GAO was a absolutely predominant group in its reactor. Furthermore, details just like the autoclaved feed and the completely dissolved feed can affect the results of the enrichment work.

关 键 词：强化生物除磷系统 聚磷菌 聚糖菌 富集 优势种群 

分 类 号：X703[环境科学与工程—环境工程]