| 吐温80与氢氧化钠耦合污泥溶胞及生物水解酸化特性研究 |
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| 引用本文： | 吕学斌,支苏丽,张云霞,张书廷. 吐温80与氢氧化钠耦合污泥溶胞及生物水解酸化特性研究[J]. 环境科学文摘, 2011, 0(6) |
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| 作者姓名： | 吕学斌 支苏丽 张云霞 张书廷 |
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| 作者单位： | 天津大学环境科学与工程学院; |
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| 基金项目： | 国家高技术研究发展计划(863计划)项目(2007AA06Z347) |
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| 摘 要： | 采用吐温80与氢氧化钠耦合进行污泥溶胞,当污泥溶胞时间为15min时,污泥上清液中蛋白质与DNA浓度较初始上清液中分别提高了32.5倍和15.8倍,显示细胞壁已得到有效破解,胞内的蛋白质与DNA溶出进入水相。而且,溶胞后污泥的水解酸化过程中挥发性脂肪酸(VFAs)和氨氮产量随着吐温80浓度的增大和酸化时间的延长而增加,这表明吐温80的加入促进了水解酸化菌对蛋白质和碳水化合物的分解。酸化进行24h时,不同条件下系统的pH均达到7.4左右,此后系统进入稳定运行阶段。
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| 关 键 词： | 吐温80 氢氧化钠 污泥溶胞 水解酸化 |
Research on Characteristic of Biological Hydrolysis and Acidification of Excess Sludge after Lysis by Combining Tween80 and Sodium Hydroxide |
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| Abstract: | Tween80 coupled with sodium hydroxide was used to promote the effect of sludge lysis.When the sludge lysis time was 15 min,the concentrations of protein and DNA in the supernatant were respectively 32.5 and 15.8 times higher than those in the initial supernatant.This indicated that the cell wall had been cracked and the intracellular protein and DNA had been extracted into the supernatant.Moreover,the concentrations of VFAs and NH3-N increased with the increase of the concentration of Tween80 and time durin... |
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| Keywords: | Tween80 sodium hydroxide sludge lysis hydrolysis and acidification |
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