[1]章文文,何苗,许长丽,等.供水管网系统中致黄物质分析及控制方法探究[J].中国给水排水,2022,38(13):36-41.
　ZHANGWen-wen,HEMiao,XUChang-li,et al.Analysis of Yellowing Substances and Their Control in Water Supply Network System[J].China Water & Wastewater,2022,38(13):36-41.
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供水管网系统中致黄物质分析及控制方法探究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第13期 页码: 36-41 栏目: 出版日期: 2022-07-01
Title:
Analysis of Yellowing Substances and Their Control in Water Supply Network System
作者:
章文文， 何苗， 许长丽， 汤峰
（合肥供水集团有限公司，安徽 合肥 230011）
Author(s):
ZHANG　Wen-wen， HE　Miao， XU　Chang-li， TANG　Feng（Hefei Water Supply Group Co. Ltd.， Hefei 230011， China）
（Hefei Water Supply Group Co. Ltd.， Hefei 230011， China）
关键词:
供水管网系统;  致黄物质;  管道锈蚀;  水力模型;  应急调度
Keywords:
water supply network system;  yellowing substances;  pipeline corrosion;  hydraulic model;  emergency dispatch
摘要:
为研究供水管网水压发生变化时如何有效控制水质突变的发生，以不同管龄及水压分布进行了水质在线监测，以水质突变频次为评价指标，发现管龄及水龄较长的管道易发生水质突变。对不同管龄的灰口铸铁管及球墨铸铁管的管道锈蚀物成分及形成机理进行了探究，分析结果表明，灰口铸铁管在使用15年后锈蚀情况较为严重，管道内壁锈蚀物中铁的含量达到了61.57%，在水压波动或水流逆向时极易发生铁锈蚀物的释放而引起水质突变。利用水力模型概算，计算了HWT区域节点流量、水量数据，在管道水流发生变化时能够预叛各节点水头损失，评估了管道迁改前后供水调度受影响区域，提出了一种面向管道施工导致的水压波动及水流逆向等情况下有效控制水质突变的方法，并准确揭示了区域供水管网系统控制水质稳定的机制，从而为保障供水管网整体安全运行奠定了基础。
Abstract:
To determine how to effectively control the fluctuation of water quality when the pressure of water supply network changes, the water quality was monitored online in pipelines with different ages and pressure distribution, and water quality fluctuation was found to be easy to occur in pipelines with old water age and pipe age by taking the frequency of water quality fluctuation as the evaluation index. The composition and mechanism of corrosion in gray iron and ductile iron pipes with different ages were investigated. After 15 years of operation, the corrosion of gray iron pipe was more serious. The proportion of iron in the corrosion of the pipe inner wall reached 61.57%. When water pressure fluctuated or the flow was reversed, the release of iron rust was easy to cause the fluctuation of water quality. Based on the hydraulic model estimate, the head loss of each node in HWT area was calculated when the node flow of the pipeline changed, and the affected areas of water supply dispatching before and after the pipeline transformation were evaluated. This paper proposed an effective method to control the fluctuation of water quality in case of water pressure fluctuation and water flow reverse caused by pipeline construction, and accurately revealed the mechanism of controlling water quality stability in regional water supply network system, which laid a foundation for safe operation of the whole water supply network.
更新日期/Last Update: 2022-07-01