| 引用本文: | 李伟英,许晨,王峰,白涛.给水管网生物膜变形细菌变化及其影响[J].哈尔滨工业大学学报,2016,48(2):82.DOI:10.11918/j.issn.0367-6234.2016.02.014 |
| LI Weiying,XU Chen,WANG Feng,BAI Tao.Change and influence of biofilm proteobacteria in water distribution system[J].Journal of Harbin Institute of Technology,2016,48(2):82.DOI:10.11918/j.issn.0367-6234.2016.02.014 |
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| 给水管网生物膜变形细菌变化及其影响 |
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李伟英1,2,许晨1,2,王峰1,2,白涛3
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(1.同济大学 环境科学与工程学院,200092 上海; 2.长江水环境教育部重点实验室(同济大学), 200092上海; 3.上海同济城市规划设计研究院, 200092 上海)
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| 摘要: |
| 为研究饮用水系统的生物稳定性和微生物的控制策略，基于南方某市的实际给水管网，利用分子生物学方法对管壁生物膜中的3类变形细菌进行研究，探讨管壁生物膜特性和生物膜细菌数量与水中细菌再生长潜力（BRP）的相互关系.结果表明，随着管网水质的提高，以γ-变形细菌为主（所占比例分别为52.14%~77.34%、51.02%~77.45%、51.86%~65.99%）的变形细菌组成向以α-变形细菌为主（所占比例分别达62.56%~91.36%、75.27%~96.20%、73.08%~96.76%）的组成转变，致病威胁降低，生物稳定性得到提高.此外，管壁生物膜的脱落，使得管网水的营养物质浓度升高，促进细菌的再生长，其与BRP存在一定的相关性.
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| 关键词: 给水管网 生物膜 变形细菌 细菌再生长潜力 |
| DOI：10.11918/j.issn.0367-6234.2016.02.014 |
| 分类号:X703 |
| 文献标识码:A |
| 基金项目:国家水体污染控制与治理科技重大专项(2012ZX07403-001)；成都川力直饮水工程安全保障技术的研究(CDCL201501). |
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| Change and influence of biofilm proteobacteria in water distribution system |
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LI Weiying1,2,XU Chen1,2,WANG Feng1,2, BAI Tao3
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(1.College of Environmental Science and Engineering, Tongji University, 200092 Shanghai, China; 2.State Key Laboratory of Pollution Control ＆ Resource Reuse(Tongji University), 200092 Shanghai, China; 3.Shanghai Tongjii Urban Planning ＆ Design Institute, 200092 Shanghai,China)
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| Abstract: |
| To study the biological stability of drinking water distribution system and the control strategy of microorganism, this paper, based on the actual water distribution system of the southern city, adopted molecular biological methods to analyze three kinds of proteobacteria in biofilms, discussed the interrelationship between biofilm and bacterial regrowth potential (BRP). The results showed that improvement of water quality led to a transformation from gamma proteobacteria dominate (the proportion was 52.14%-77.34%, 51.02%-77.45%, 51.86%-65.99%, respectively) to alpha proteobacteria dominate (the proportion reached 62.56%-91.36%, 75.27%-96.20%, 73.08%-96.76%, respectively), and the biological stability was improved. In addition, the shedding of biofilm, which makes higher nutrient concentrations of water pipe network, promoted the bacteria regrowth and thus has a certain correlation with BRP.
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| Key words: water distribution system biofilm proteobacteria bacterial regrowth potential (BRP) |
