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Effects of inorganic nutrients on the regrowth of heterotrophic bacteria in drinking water distribution systems

机译：无机营养成分对饮用水分配系统中异养细菌再生的影响

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摘要

Three laboratory-scale water pipe systems were set up to study the effects of adding three inorganic nutrients (ammonium, nitrate or phosphate) on biofilm formation in water pipes. The results showed that the effects of adding ammonium or nitrate on the biofilm formation were insignificant when levels below 0.1mg N/l were added. Analogous results were observed when phosphate was added at levels below 0.005mgP/l. However, as the addition of ammonium increased to 0.5mgN/l, significant effects on biofilm formation were observed. Similar results were obtained phosphate was added at levels above 0.01mgP/l. Batch tests were also conducted using water samples collected from a Taiwanese drinking water distribution system. The results indicated that the addition of ammonium, nitrate or phosphate to treatment plant effluent stimulates bacterial growth. In the distributed water of an urban area, the addition of nitrate or phosphate stimulated bacterial growth. The bacterial growth in the distributed water of a suburban area was not stimulated by adding any of these three inorganic nutrients.
机译：建立了三个实验室规模的水管系统，以研究添加三种无机养分（铵，硝酸盐或磷酸盐）对水管中生物膜形成的影响。结果表明，当添加量低于0.1mg N / l时，添加铵或硝酸盐对生物膜形成的影响不明显。当以低于0.005mgP / l的水平添加磷酸盐时，观察到类似的结果。然而，随着铵的添加增加到0.5mgN / l，观察到对生物膜形成的显着影响。获得了相似的结果，磷酸盐的添加量高于0.01mgP / l。还使用从台湾饮用水分配系统收集的水样进行了批次测试。结果表明，向处理厂废水中添加铵，硝酸盐或磷酸盐会刺激细菌生长。在市区的分散水中，添加硝酸盐或磷酸盐会刺激细菌的生长。通过添加这三种无机养分中的任何一种都不会刺激郊区分布水中的细菌生长。

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  • 来源
    《Journal of Environmental Management》 |2005年第3期|p.255-263|共9页
  • 作者

    Chu C; Lu C; Lee C;

  • 作者单位

    Department of Environmental Engineering, National Chung Hsing University, 250, Kuo Kuang Road, Taichung 402, Taiwan, ROC.;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境规划与环境管理;
  • 关键词

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