土著PHA合成菌回注法提高活性污泥积累聚羟基脂肪酸酯能力  

Improvement of PHA Accumulation Ability for Excess Activated Sludge by Adding Native PHA-Synthesis-Bacteria

作　　者：邓飞[1] 曾猛[1] 刘娜[1] 王聪[1] 孙村民[1] 王淑芳[2] 宋存江[1,2] 

机构地区：[1]南开大学生命科学学院微生物学系,分子微生物学与技术教育部重点实验室,天津300071 [2]南开大学生命科学学院,生物活性材料教育部重点实验室,天津300071

出　　处：《环境科学研究》2008年第4期14-19,共6页Research of Environmental Sciences

基　　金：国家高技术研究发展计划(863)项目(2007AA06Z323);天津市科技攻关专项(05YFSZSF02200,06YFGZSH06800)

摘　　要：在活性污泥驯化之初加入少量土著聚羟基脂肪酸酯（PHA）合成菌（0.10-0.25g/L），通过10 d厌氧-好氧或好氧-沉淀方式进行污泥驯化后, 以葡萄糖或乙酸钠为碳源进行PHA发酵. 研究了驯化前后土著PHA合成菌回注组和对照组驯化过程中的总菌数，PHA合成菌数的变化，以及对PHA发酵产率的影响.结果表明：在回注组污泥中PHA合成菌的增长速率和增长量均高于对照组，各种污泥积累PHA占挥发性悬浮固体的比例提高了21.44%-43.18％.Some native PHA-synthesis-bacteria （0.10 - 0.25 g/L） were added at initial stages of activated sludge domestication. The numbers of total microbe and PHA-synthesis-bacteria in activated sludge were estimated during domestication of anaerobic-aeroblc or aerobic- settling condition for 10 days. PHA fermentation was studied by glucose or sodium acetate trihydrate as carbon source. Results showed that the proliferation acceleration of PHA-synthesis-bacteria in activated sludge was increased after the native PHA-synthesis-bacteria were added at initial stages of domestication to excess activated sludge. Simultaneously, the yields of PHA, i.e. the percents of PHA/VSS, were higher than that of controi runs. They were raised by 21.44% to 43.18 % .

关 键 词：剩余活性污泥 土著PHA合成菌 厌氧-好氧驯化 好氧-沉淀驯化 聚羟基脂肪酸酯 

分 类 号：X703[环境科学与工程—环境工程]