pH对增强生物除磷系统酶活性的影响  

Effect of pH on Enzyme Activity of Enhanced Biological Phosphorus Removal System

作　　者：张超[1] 陈银广[1] 刘燕[1] 

机构地区：[1]同济大学污染控制与资源化国家重点实验室,上海200092

出　　处：《高等学校化学学报》2008年第9期1797-1800,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:50408039);国家'八六三'计划(批准号:2007AA06Z326);教育部博士学科点基金(批准号:20060247006)资助

摘　　要：通过比较不同pH值下增强生物除磷系统中关键酶活性的变化规律,研究了酶活性与聚磷菌污泥产率系数及可溶性正磷酸盐（SOP）的关系.结果表明,在pH=6.4～7.6范围内,脱氢酶、腺苷酸激酶和聚磷酸盐激酶的活性随着pH的增加而线性增加,酸性磷酸酶和碱性磷酸酶的活性不受pH的影响.聚磷菌的产率系数与脱氢酶活性、厌氧释磷速率与腺苷酸激酶活性、好氧吸磷速率与聚磷酸盐激酶活性分别呈线性关系.表明较高的pH有利于聚磷菌的生长和提高聚磷菌的活性,从而提高了除磷效率.Enzyme plays an important role in enhanced biological phosphorus removal （EBPR）; however, little attention was paid on this issue in the literature. Based on the investigations of the activities of some key enzymes related to EBPR, the relationships between enzyme activity and phosphorus-accumulating organisms （PAO） sludge yield coefficient, and between enzyme activity and soluble ortho-phosphorus were studied. In the range of pH 6.4-7.6, the results showed that the activity of dehydrogenase, adenylate kinase and polyphosphate kinase increased linearly with pH, while acid- and alkaline-phosphatase activity were not influenced by pH. It is found that a linear relationship was shown between PAO sludge yield coefficient and dehydrogenase activity, anaerobic phosphorus release rate and adenylate kinase activity, and aerobic phosphorus uptake rate and polyphosphate kinase activity, respectively. The results indicate that a higher pH was beneficial to the growth and the activity of PAO, which led to an improved phosphorus removal performance.

关 键 词：酶活性 PH值 增强生物除磷 

分 类 号：Q55[生物学—生物化学] X703[环境科学与工程—环境工程]