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首页> 外文会议>Distribution systems symposium amp; exposition (DSS 09) >Water Quality Impact on Pipe Roughness Coefficient and Water SystemCapacity: Testing, Calibration and Evaluation
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Water Quality Impact on Pipe Roughness Coefficient and Water SystemCapacity: Testing, Calibration and Evaluation

机译：水质对管道粗糙度系数和水系统容量的影响：测试，校准和评估

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While the impact of water quality on distribution system corrosion (distribution systemrnand lead & copper piping) has been well researched and examined, there is limited datarnavailable about the impact of water quality on distribution system hydraulics and pipernroughness coefficients. While it is understood that when utilities target a slightlyrnpositive Langelier Saturation Index (LSI) deposition in the distribution system pipingrnmay occur, little is documented about the short-term and long-term impact on pipernroughness coefficients.rnTo understand the impact of water quality on distribution system hydraulic capacity, Cfactorrn(Hazen Williams Pipe Roughness Factor) testing, model calibrations andrnevaluations were conducted and additional data were gathered from several sitesrnaround the country. Pipe roughness testing was conducted during hydraulic modelrncalibrations to further assess the impact of varying C-values on distribution systemrnhydraulics. Water treatment processes and practices were evaluated in parallel to assessrntheir impact on distribution system hydraulics. Utilities that operate lime softeningrnsystems, for example, with minimum re-carbonation showed susceptibility to low Cvaluesrnand thus lower distribution system carrying capacity.rnThe negative impact of water quality on distribution system hydraulics is becomingrnincreasingly important with higher energy costs and therefore, this is a critical part ofrnutility operations that should be carefully evaluated. This paper provides valuable datarnfrom water distribution systems across the country were C-value data was collected andrnevaluated against water treatment processes.
机译：尽管水质对配电系统腐蚀（配电系统以及铅和铜管道）的影响已经得到了很好的研究和检验，但是关于水质对配电系统水力和管道粗糙度系数的影响的数据有限。尽管可以理解的是，当公用事业公司的目标是在分配系统管道中发生略为正的朗格里尔饱和指数（LSI）沉积时，但很少有关于短期和长期对管道粗糙度系数的影响的文献记录.rn要了解水质对分配的影响进行了系统液压容量，Cfactorrn（Hazen Williams管粗糙度系数）测试，模型校准和评估，并从全国各地的多个站点收集了其他数据。在水力模型校准期间进行了管道粗糙度测试，以进一步评估变化的C值对分配系统液压的影响。同时评估了水处理过程和实践，以评估其对分配系统液压系统的影响。例如，使用石灰软化系统的公用事业企业，其再碳酸化程度最低，因此很容易受到低C值的影响，从而降低了分配系统的承载能力。rn随着供水成本的增加，水质对分配系统液压的负面影响变得越来越重要，因此，这是至关重要的生育率操作的一部分，应仔细评估。本文提供了来自全国供水系统的有价值的数据，这些数据是针对水处理过程收集并重新评估了C值数据。

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