| 供水管网枝状末端的水质变化规律研究 |
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| 引用本文： | 姜登岭,倪国葳,薄国柱,苏幼坡,赵锐. 供水管网枝状末端的水质变化规律研究[J]. 中国给水排水, 2009, 25(23) |
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| 作者姓名： | 姜登岭 倪国葳 薄国柱 苏幼坡 赵锐 |
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| 作者单位： | 河北理工大学,建筑工程学院,河北,唐山,063009;河北省地震工程研究中心,河北,唐山,063009 |
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| 摘 要： | 研究了某中等城市供水管网枝状末端水质指标的变化规律.结果表明,余氯是控制该管段细菌再生长的关键因素,沿管段余氯逐渐被消耗,细菌数量逐渐增加,水样中的HPC达到400～800 CFU/mL,存在威胁水质安全的风险.为保证饮用水的水质安全,必须采取有效措施来缩短管道的水力停留时间,避免水流长时间驻留在管道内而导致微生物滋生繁殖.
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| 关 键 词： | 供水管网枝状末端 水质指标 细菌再生长 |
Changes of Water Quality in Branch End of Water Distribution System |
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| JIANG Deng-ling,NI Guo-wei,BO Guo-zhu,SU You-po,ZHAO Rui. Changes of Water Quality in Branch End of Water Distribution System[J]. China Water & Wastewater, 2009, 25(23) |
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| Authors: | JIANG Deng-ling NI Guo-wei BO Guo-zhu SU You-po ZHAO Rui |
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| Abstract: | Changes of water quality in branch end of water distribution system were investigated in a middle-sized city. The results show that residual chlorine is the key factor to control the bacterial re-growth in the branch. Bacteria increase gradually with chlorine depletion in the distribution system, the HPC is 400 to 800 CFU/mL, and the water safety is threatened. In order to ensure the water safety, hy-draulic retention time should be reduced to avoid water deterioration causing micro-organisms breeding. |
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| Keywords: | branch end of water distribution system water quality index bacterial regrowth |
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