给水管网不同供水区域管垢的特征分析  

Characteristics Analysis of Corrosion Scale in Different Drinking Water Supply Areas

作　　者：王敏 马敏 曹楠 

机构地区：[1]北京市自来水集团有限责任公司技术研究院,北京100012

出　　处：《中国给水排水》2014年第20期38-41,共4页China Water & Wastewater

基　　金：北京市科委计划项目(Z111100074211003);国家水体污染控制与治理科技重大专项(2012ZX07404002)

摘　　要：不同水源所形成的管网管垢特征不同,因此水源切换时发生"黄水"的风险也不相同。研究了不同供水区域的管垢特征,以进一步分析"黄水"发生的影响因素。地表水厂管网前端管-Y、地表水厂管网末梢管-X管垢相对较为丰富,且多为瘤状垢或瘤状垢连生形成整体连续厚腐蚀层;地下水厂管-H管垢相对较少,且表面薄腐蚀垢层厚几毫米或者不足1 mm。3处管垢的成分各有差异,3个样品的微生物多样性都较高。在管-X样品和管-Y样品中,并没有占绝对优势地位的菌种,菌种在文库中的分布较为平均,而在管-H样品中存在一定的优势菌种。在管-Y和管-H样品中检测到与管网腐蚀产物释放相关的微生物种类。Different water sources form distinct pipe corrosion scale characteristics, thus the risk of ＇ red water＇ during water source switch is not the same. The characteristics of corrosion scale in different water supply areas were investigated to analyze the factors affecting the occurrence of ＇red water＇. Pipe- Y and pipe-X from the initial and terminal sections in the surface water supply area showed abundant corrosion scales with nodules or thick layers formed by nodules. In contrast, pipe-H from the ground water supply area was relatively barren in terms of corrosion scales, and corrosion layers were only several mm thick or even less than 1 mm. In addition, there were diverse microbes in all corrosion scales derived from three locations despite of different components. For pipe-X and pipe-Y, microbial strains were similar in terms of the amount, and for pipe-H, dominant strain was observed. Especially, microbes associated with the release of corrosion scale were detected in pipe-Y and pipe-H.

关 键 词：管垢成分 微生物多样性 “黄水” 给水管网 水源切换 

分 类 号：TU991.3[建筑科学—市政工程]