| S-TE污泥溶解过程中主要固形物质的变化及动力学分析 |
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| 引用本文： | 史彦伟,李小明,杨麒,曾光明,张少强,赵维纳,刘精今.S-TE污泥溶解过程中主要固形物质的变化及动力学分析[J].环境科学学报,2008,28(2):319-325. |
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| 作者姓名： | 史彦伟 李小明 杨麒 曾光明 张少强 赵维纳 刘精今 |
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| 作者单位： | 湖南大学环境科学与工程学院,长沙,410082 |
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| 基金项目： | 国家自然科学基金
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教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 筛选出一株能分泌胞外酶、促进污泥溶解的嗜热脂肪芽孢杆菌Bacillus stearothermophilus sp.AT06-2,将AT06-2培养液接种入不同浓度(TSS约为7、14和21 g·L-1)的剩余污泥,于60℃进行嗜热菌溶解试验,并与未接种试验进行对比.结果表明,接种后TSS和VSS溶解率都得到提高60h后接种试验VSS溶解率分别达到58.76%、50.17%和39.38%,而未接种试验VSS溶解率仅为34.00%、28.63%和25.22%.在固形物质溶解机理方面,VSS的溶解主要受酶催化效应和热水解效应的影响,TSS的溶解减量取决于VSS和FSS的组成比例.VSS溶解在初始阶段(t=3d)符合准一级反应动力学模型,接种后溶解速率常数Kd显著提高,分别从未接种的0.14 d-1,0.10 d-1、0.10 d-1相应提高到接种条件下的0.30 d-1、0.23 d-1和0.16 d-1.
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| 关 键 词： | S-TE 剩余污泥 溶解 嗜热菌 胞外酶 准一级反应动力学 |
| 文章编号： | 0253-2468（2008）02-319-07 |
| 收稿时间： | 2006-12-29 |
| 修稿时间： | 2007-05-30 |
Concentrations and kinetics of primary suspended solids during sludge solubilization by thermophilic enzymes |
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| SHI Yanwei,LI Xiaoming,YANG Qi,ZENG Guangming,ZHANG Shaoqiang,ZHAO Weina and LIU Jingjin.Concentrations and kinetics of primary suspended solids during sludge solubilization by thermophilic enzymes[J].Acta Scientiae Circumstantiae,2008,28(2):319-325. |
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| Authors: | SHI Yanwei LI Xiaoming YANG Qi ZENG Guangming ZHANG Shaoqiang ZHAO Weina and LIU Jingjin |
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| Institution: | College of Environmental Science and Engineering, Hunan University, Changsha 410082,College of Environmental Science and Engineering, Hunan University, Changsha 410082,College of Environmental Science and Engineering, Hunan University, Changsha 410082,College of Environmental Science and Engineering, Hunan University, Changsha 410082,College of Environmental Science and Engineering, Hunan University, Changsha 410082,College of Environmental Science and Engineering, Hunan University, Changsha 410082 and College of Environmental Science and Engineering, Hunan University, Changsha 410082 |
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| Abstract: | |
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| Keywords: | solubilization by thermophilie enzyme excess sludge solubilization thermophilie bacteria extracellular enzyme pseudo-first order reaction kinetics |
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