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.
出处
《高技术通讯》
CAS
CSCD
北大核心
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
关键词
强化生物除磷系统
聚磷菌
聚糖菌
富集
优势种群
enhanced biological phosphorus removal system （EBPR）, phosphorus accumulating organisms, glycogen accumulating organisms, enrichment, predominant species
作者简介
女,1979年生,博士生；研究方向：污水生物除磷；E—mail：youyang1979@sina．com．cn
联系人，E-mail：pyz@bjut．edu．cn
