不同管网腐蚀与水质稳定性中试研究  

Corrosion and Water Chemical and Biological Stability in Different Pipe Lines: Influence of Water Quality and Pipe Material

作　　者：张素佳 王海波[2] 赵丹[1] 胡春 石宝友[2] ZHANG Su-jia;WANG Hai-bo;ZHAO Dan;HU Chun;SHI Bao-you(School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China;Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215011 [2]中国科学院生态环境研究中心,北京100085 [3]广州大学大湾区环境研究院,广东广州510006

出　　处：《中国给水排水》2018年第13期66-70,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07404002);国家自然科学基金青年基金资助项目(51308529)

摘　　要：通过中试对再生水和饮用水在带水泥内衬的新球墨铸铁管和不带水泥内衬的新球墨铸铁管管网中的腐蚀及水质稳定性进行了研究。8个月中试研究证实:带水泥内衬的球墨铸铁管腐蚀较轻,水质稳定性好,但可能会引起钙离子释放而造成水质硬度增加;不带水泥内衬的球墨铸铁管虽然一开始有一个快速腐蚀阶段,但随着致密氧化层的出现,生物膜上生长出铁氧化菌、铁还原菌和硫酸盐还原菌等细菌,铁还原菌与腐蚀产物之间的相互作用可以加速氧的消耗,有效抑制管网腐蚀,保持管网水质稳定性。The corrosion and water chemical and biological stability were studied in the new ce- ment lined ductile iron pipes and new unlined ductile iron pipes for both reclaimed water and drinking water. Results from eight months of tests showed that the corrosion in the cement lined ductile iron pipes was moderate, and the water chemical and biological characteristics were stable. However, the release of calcium ion could probably increase the hardness of the water. In the new unlined ductile iron pipes, the corrosion rate was fast at first. When a compact oxide layer was formed, the iron oxidizing bacteria, the iron reducing bacteria：, and the isulfate reducing bacteria were formed in the biofilm. The interaction of i- ron reducing bacteria and corrosion products accelerated the consumption of oxygen and further inhibited the corrosion, and the water chemical and biological stability could be maintained.

关 键 词：管网腐蚀 再生水 饮用水 化学与生物稳定性 水泥内衬 

分 类 号：TU991[建筑科学—市政工程]