Keevil C W
Environmental Healthcare Unit, School of Biological Sciences, University of Southampton, Bassett Crescent East, Southampton S016 7PX, UK.
Water Sci Technol. 2004;49(2):91-8.
Copper is a generally robust material that has beneficial properties to reduce biofilm formation and pathogen colonisation of pipes supplying potable water. However, a rare pitting corrosion can occur in soft, poorly buffered waters that can lead to pipe failure. This has been shown to be mediated by a copper-tolerant biofilm whose physical and chemical heterogeneity can establish microenvironments for corrosion potentials, causing micro pits that eventually coalesce into large perforations through the pipe wall. Control of the biofilm, for example through reduced cold water or elevated hot water temperatures, can suppress this corrosion phenomenon.
铜是一种通常很耐用的材料，具有有益特性，可减少供应饮用水管道中的生物膜形成和病原体定植。然而，在软质、缓冲性差的水中可能会发生罕见的点蚀，这可能导致管道故障。研究表明，这是由耐铜生物膜介导的，其物理和化学异质性可为腐蚀电位建立微环境，形成微坑，最终通过管壁合并成大穿孔。例如，通过降低冷水温度或提高热水温度来控制生物膜，可以抑制这种腐蚀现象。
