城市供水管网水源切换模拟及黄水控制措施研究  

Study on switching mode of water resources of municipal water supply network and controlling measures of“yellow water”issue

作　　者：周全 康雅 韩珀 沙净 高红涛 张垚 

机构地区：[1]郑州自来水投资控股有限公司,郑州450007

出　　处：《给水排水》2014年第11期96-98,共3页Water & Wastewater Engineering

基　　金：郑州市技术研究与开发支持重点科技攻关项目(121PZDGG320);郑州市民生科技进步工程项目(131PZDGC143);国家水体污染控制与治理科技重大专项(2012ZX07404-004)

摘　　要：针对Z市未来水源切换期间可能发生的黄水现象,通过建立小区试验模型,研究了管网中总铁、溶解氧和硫酸盐等水质参数在换水期间的变化规律。研究结果表明:硫酸盐浓度可以作为整个水源切换过程的指示性指标,该市主要管网水源切换过程的终点时间约30h,小区管道在换水期间将发生铁超标现象,通过增大管道内余氯浓度至0.4mg/L以上,控制管网溶解氧水平在4.50mg/L以上,可在换水7d后有效缓解黄水现象。To solve the problem that ＂yellow water＂ issue might happen during the future water resource switching process of city Z, based on the modeling of district test, this paper studied the variance of some water quality indicators, including the total iron, dissolved oxygen, and sulfate, during the water resource switching process. The study results showed that sulfate concentration might be the indicator of the whole water resource switching process. The terminal water resource switching time of the main water supply network might be 30 hours. During the water resource switching process, iron concentration might exceed the standards. If the residual chlorine in network could be increased to above 0.4 mg/L and the dissolved oxygen concentration could be above 4. 50 mg/L, the ＂yellow water＂ issue would be relieved after 7 days of the water resource switching process.

关 键 词：水源切换 黄水 余氯 溶解氧 灰口铸铁管 

分 类 号：TU991.33[建筑科学—市政工程]