温度对聚磷菌活性及基质竞争的影响  

Effect of Temperature on PAO Activity and Substrate Competition

作　　者：张玲[1] 彭党聪[1] 常蝶 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055

出　　处：《环境科学》2017年第6期2429-2434,共6页Environmental Science

基　　金：国家自然科学基金项目(50878178)

摘　　要：本研究以30℃高温条件下稳定运行的强化生物除磷(EBPR)反应器的污泥为对象,探讨温度对高温聚磷菌(PAOHT)活性及基质竞争能力的影响.结果表明,在15~30℃温度范围内,PAOHT的活性以及对基质的竞争能力随温度升高不断增强,当温度为30℃时,PAOHT的厌氧释磷(以P/VSS计)、好氧吸磷(以P/VSS计)以及乙酸吸收速率(以HAc/VSS计)分别为239.46、79.90、357.47 mg·(g·h)^(-1),对应的ΔP/ΔHAc为0.628,均高于常温PAO.利用简化的阿伦尼乌斯公式对不同温度下试验污泥的厌氧释磷、好氧吸磷和乙酸吸收速率进行拟合,得出其温度系数分别为1.08、1.07和1.05.To investigate the effect of temperature on the activity of high-temperature phosphate accumulating organisms （PAOnT） and their competitive ability for the substrate, the sludge from an enhanced biological phosphorus removal （EBPR） reactor stably operated at the high temperature of 30℃ was used. The results showed that PAOsT activity and their competitive ability for the substrate increased with temperature increasing from 15℃ to 30℃. When the temperature was as higher as 30℃ , the rates of anaerobic phosphorus release, aerobic phosphorus uptake and acetate uptake of PAOHT were 239.46 mg （g h） -1 , 79.90 mg （g.h） -1 , 357.47 mg（gh）-1, respectively. The corresponding value of AP/AHAc was 0. 628, which was considerably higher than that of PAO reported in literatures. A simplified Arrhenius equation was used to describe the effect of temperature on the rates of anaerobic phosphorus release, aerobic phosphorus uptake and acetate uptake, and the temperature coefficients were 1.08, 1.07 and 1.05, respectively.

关 键 词：强化生物除磷(EBPR) 聚磷菌(PAO) 荧光原位杂交技术(FISH) ΔP/ΔHAc 温度系数 

分 类 号：X703.1[环境科学与工程—环境工程]