| 基于代谢产物调控的活性污泥沉淀性能控制原理研究 |
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| 引用本文： | 李志华,贺春博,张芹,张妍.基于代谢产物调控的活性污泥沉淀性能控制原理研究[J].环境科学学报,2014,34(12):3030-3035. |
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| 作者姓名： | 李志华 贺春博 张芹 张妍 |
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| 作者单位： | 西安建筑科技大学环境与市政工程学院;西北水资源与环境生态教育部重点实验室; |
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| 基金项目： | 国家自然科学基金面上项目(No.51078303);教育部博士点基金联合资助课题(No.20136120110002);陕西省科技计划国际合作项目(No.2013KW2201)~~ |
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| 摘 要： | 通过对不同沉降性能活性污泥的胞外聚合物(EPS)进行荧光特性分析,探讨了荧光强度峰值、荧光区域积分等参数与污泥沉降性能的关系.研究表明,典型波长下荧光强度峰值与污泥沉降性能之间有很好关联性,据此,建立了微生物典型代谢产物与沉淀性能的调控曲线即活性污泥的安全操作线与微生物代谢状态曲线,确立了活性污泥沉淀性能调控区域即高代谢产物区可获得良好的固液分离效果.研究成果从微生物代谢的角度揭示了絮体结构的调控方法,具有重要的理论意义.
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| 关 键 词： | 代谢产物 活性污泥 荧光特性 沉降性能 |
| 收稿时间： | 2014/1/28 0:00:00 |
| 修稿时间： | 5/8/2014 12:00:00 AM |
Control principle of settleability of activated sludge by regulation of metabolites |
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| LI Zhihu,HE Chunbo,ZHANG Qin and ZHANG Yan.Control principle of settleability of activated sludge by regulation of metabolites[J].Acta Scientiae Circumstantiae,2014,34(12):3030-3035. |
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| Authors: | LI Zhihu HE Chunbo ZHANG Qin and ZHANG Yan |
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| Affiliation: | 1. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055;2. Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an 710055;1. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055;2. Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an 710055;1. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055;2. Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an 710055;1. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055;2. Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an 710055 |
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| Abstract: | Relationship between fluorescence intensity, fluorescent area integral and settleability of the activated sludge was investigated by analyzing the fluorescence characteristics of EPS extracted from activated sludge with different settleability. Results showed that the fluorescence peak intensity was well correlated with the settleability. Consequently, operational curves between the factors of typical microorganism metabolites and settleability were developed, including the safe operation line of activated sludge and curve of microbial metabolic state. Good solid-liquid separation region with high metabolite concentrations was identified. These findings revealed the floc structure regulation method from the perspective of microbial metabolic with important theoretical significance. |
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| Keywords: | metabolic product activated sludge fluorescent characteristic settleability |
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