| 模拟动静水条件对水工混凝土表面生物膜微生物群落的影响 |
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| 引用本文： | 万明月,都基铭,李俊,李轶,王龙飞.模拟动静水条件对水工混凝土表面生物膜微生物群落的影响[J].环境工程,2020,38(2):35-40,69. |
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| 作者姓名： | 万明月 都基铭 李俊 李轶 王龙飞 |
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| 作者单位： | 1. 河海大学 环境学院 浅水湖泊综合治理与资源开发教育部重点实验室, 南京 210098; |
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| 摘 要： | 水利工程是社会发展的重要基础设施，作为其重要组成部分的水工混凝土构筑物在长期运行下会受到微生物腐蚀作用，造成不同程度的结构损伤，影响其安全运行，因此对水工构筑物表面细菌群落结构及功能的解析具有重要的科学和工程意义。以水工混凝土构筑物表面微生物群落为研究对象，阐述动静水条件下微生物群落组成分布及演替特征，探究表面微生物群落结构组成与环境因素之间的相关关系。结果表明:1）混凝土质量损失主要由水动力条件和微生物作用共同导致，其中微生物作用更为显著；2）相比于静水条件，动水条件未显著影响水工混凝土表面微生物群落的分布特征；3）动水条件下混凝土表面微生物群落在更短的时间内趋于稳定，由此推断模拟动水环境中水工混凝土将更早地遭受微生物腐蚀作用。研究对水利工程设施的安全运行具有积极的理论和工程意义。
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| 关 键 词： | 水工混凝土构筑物 生物膜 微生物群落 动静水条件 |
| 收稿时间： | 2019-10-21 |
INFLUENCE OF FLOWING AND STATIC WATER CONDITIONS ON MICROBIAL COMMUNITIES OF BIOFILMS ATTACHED ON SURFACE OF HYDRAULIC CONCRETE STRUCTURES |
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| WAN Ming-yue,DU Ji-ming,LI Jun,LI Yi,WANG Long-fei.INFLUENCE OF FLOWING AND STATIC WATER CONDITIONS ON MICROBIAL COMMUNITIES OF BIOFILMS ATTACHED ON SURFACE OF HYDRAULIC CONCRETE STRUCTURES[J].Environmental Engineering,2020,38(2):35-40,69. |
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| Authors: | WAN Ming-yue DU Ji-ming LI Jun LI Yi WANG Long-fei |
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| Affiliation: | 1. College of Environment, Hohai University, Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Nanjing, 210098, China;2. Water Conservancy and Agricultural Machinery Service Station in Huayang Street in Jurong, Zhenjiang, 212400, China |
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| Abstract: | Water conservation projects (WCP) are basically involved in the infrastructure industries in the modern society. Hydraulic structures, which play an important role in WCP, are mainly composed of concretes or reinforced concretes. Under long-term operation, they will be affected by microbial corrosion, which will cause structural damages and finally affect their safe operations. The analysis of bacterial community on surface of hydraulic structures is of great significance. The present work focuses on the microbial communities on surface of hydraulic concrete structures (HCS). We expounded the distribution and succession characteristics of bacterial communities under different hydrodynamic conditions and analyzed the response of bacterial community structure and composition on surface of HCS to environmental factors. The results show that:1) The mass loss of concretes was mainly attributed to hydrodynamic and microbial corrosion, in which microbial action played a more significant role; 2) Hydrodynamic conditions didn't significantly affect the composition and succession of microbial communities was surface of HCS; 3) Under flowing water conditions, the succession of microbial communities was accelerated, and the HCS would suffer an earlier microbial corrosion consequently. This study could provide a theoretical and engineering significance for the scientific and safe operation of water conservation projects. |
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