| 活性污泥的絮体结构模型 |
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| 引用本文： | 龙向宇,唐然,方振东,冯裕钊,蒋辉,刘春婷.活性污泥的絮体结构模型[J].城市环境与城市生态,2010,23(2):36-39. |
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| 作者姓名： | 龙向宇 唐然 方振东 冯裕钊 蒋辉 刘春婷 |
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| 作者单位： | 后勤工程学院营房管理与环境工程系,重庆,400016;后勤工程学院军事油料应用与管理工程系,重庆,400016;后勤工程学院营房管理与环境工程系,重庆,400016;重庆大学三峡库区生态环境教育部重点实验室,重庆,400045 |
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| 基金项目： | 基金项目：国家重大科技专项（2008ZX07315-003）;重庆市自然科学基金（CSTC2009BB7175） |
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| 摘 要： | 采用Motic数码显微镜观察SRT为3 d和15 d的活性污泥絮体以及它们的LEPS和TEPS絮凝污泥悬浮液形成的生物絮体的结构。结果表明,高SRT（15 d）活性污泥絮体较低SRT（3 d）活性污泥絮体的颜色深且密实;同一活性污泥中,内层的絮体结构较外层的絮体结构密实,细菌细胞与菌胶团之间的结合更为紧密。最后,结合絮体结构图片,从大分子作用力的角度,提出了活性污泥絮体结构模型,以形象地描述不同SRT活性污泥EPS及其表面性质变化对活性污泥絮凝沉降性能的影响。
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| 关 键 词： | 活性污泥 结构模型 胞外聚合物 大分子作用力 |
Discussion of Structural Model for Activated Sludge Floc |
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| LONG Xiang-yu,TANG Ran,FANG Zhen-dong,FENG Yu-zhao,JIANG Hui,LIU Chun-ting.Discussion of Structural Model for Activated Sludge Floc[J].Urban Environment & Urban Ecology,2010,23(2):36-39. |
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| Authors: | LONG Xiang-yu TANG Ran FANG Zhen-dong FENG Yu-zhao JIANG Hui LIU Chun-ting |
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| Institution: | 1.Department of Barracks Management ＆ Environmental Engineering,Logistics Engineering University of PLA,Chongqing 400016,China;2.Department of Military Oil Application ＆ Management Engineering,Logistics Engineering University of PLA,Chongqing 400016,China;3.Key Lab of Three Gorges Reservoir Region＇s Eco-Environment 〈 Ministry of Education〉,Chongqing University,Chongqing 400045,China) |
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| Abstract: | The structure of activated sludge floc,of which sludge retention time（SRT） were 3d and 15d respectively,and biological floc reflocculated by their Loosely bound EPS（LEPS） or Tightly bound EPS（TEPS） which flocculate suspended sludge liquid,were observed by Motic digital microscope.The color of high SRT（15 d） activated sludge floc is deeper than that of low SRT（3d）,and the structure of the former is denser than that of the latter.Furthermore,the inner structrure is denser than that of the exterior in activated sludge floc,in which bacteria and zooglea is tightly linked with each other.In the end,based on floc structure photos and macromolecular force in activated sludge floc,the structural mode of activated sludge floc was proposed,which can iconically expound the effect of EPS and their surface character on the flocculating properties and settleability of activated sludge. |
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| Keywords: | activated sludge structural model extracellular polymeric substances macromolecular force |
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