不同温度及厌氧/好氧运行条件对聚磷菌衰减特性的影响  

Effect of Different Temperature and Anaerobic/Aerobic Conditions on the Decay Characteristics of PAOs

作　　者：苗志加[1] 薛桂松[1] 翁冬晨[1] 曹贵华[1] 彭永臻[1] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复重点实验室,北京100124

出　　处：《土木建筑与环境工程》2013年第2期113-117,123,共6页Journal of Civil,Architectural & Environment Engineering

基　　金：北京市科技计划(D121100000112001);2012北京市教委科技创新平台项目

摘　　要：以富含90%±2%纯度聚磷菌(PAOs)的强化生物除磷系统(EBPR)为研究对象,考察了10℃厌氧、10℃好氧、20℃厌氧、20℃好氧4种运行条件下PAOs的衰减特征。结果表明:温度越高对应衰减速率越快,4个系统在1～9d里衰减速率的平均值分别为:10℃厌氧:0.053/d;10℃好氧:0.050/d;20℃厌氧:0.072/d;20℃好氧:0.145/d。其中4个系统由于细胞死亡引起的活性衰减速率分别为:10℃厌氧:0.019/d;10℃好氧:0.017/d;20℃厌氧:0.019/d;20℃好氧:0.03/d,占总活性衰减的比例分别为:35.8%、34%、26.4%、20.7%。在9d饥饿衰减期间,污泥中所含PHA与糖原的量总体呈下降趋势。相同温度下,糖原在厌氧衰减过程中降解速率大于好氧;在同样的厌氧、好氧衰减条件下,温度越高糖原降解速率越快。In order to analyze the effect of different temperatures on PAOs decay,a lab-scale EBPR culture with PAOs over 90%±2% of the entire bacterial was used under different conditions（10℃ anaerobic,10℃ aerobic,20℃ anaerobic,20℃ aerobic）.The results show that the decay rate increases with the increase of temperature;the average rate during 1~9 days is（respectively： 10℃ anaerobic,10℃ aerobic,20℃ anaerobic,20℃ aerobic） 0.053/d,0.50/d,0.072/d,and 0.145/d;the cell death rate is 0.019/d,0.017/d,0.019/d,and 0.03/d,which accounts for 35.8%,34%,26.4%,and 20.7% of the decay rate,respectively.The concentration of PHA and glycogen decreases during the decay period.And Glycogen degrades quickly in anaerobic conditions than in aerobic conditions under the same temperature.The glycogen degrade rate is higher with the increase of temperature under the same anaerobic and aerobic conditions.

关 键 词：聚磷菌 强化生物除磷 衰减速率 LIVE DEAD染色 聚羟基烷酸 糖原 

分 类 号：X703.1[环境科学与工程—环境工程]