Impact of Particulate Matter on Distribution System Disinfection Efficacy
Impact of Particulate Matter on Distribution System Disinfection Efficacy
复制标题
颗粒物对供水系统消毒效果的影响
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
R. Hofmann
中科院分区：
文献类型：
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作者：
L. Wojcicka;Carole Baxter;R. Hofmann
已经证明，尽管存在消毒剂残留物，微生物仍能在饮用水消毒后存活，并在消毒后的水中仍能存活。这可能部分归因于颗粒物的保护。本研究的目的是确定颗粒物的存在对消毒动力学的影响。在土壤、腐蚀和废水颗粒存在和不存在的情况下，对少见鞘氨醇单胞菌ATCC 10829和幽门螺杆菌ATCC 43504进行了灭活实验。结果表明，这种颗粒的存在往往会抑制氯和一氯胺的灭活，尽管在所测试的条件下影响的程度很小(例如，在消毒剂的存在低于1毫克/L的情况下，作用几分钟的灭活对数减少1个对数)。
Microorganisms have been shown to survive drinking water disinfection and remain viable in disinfected waters despite the presence of disinfectant residuals. This may be partially attributed to protection by particulate matter. The aim of this study was to determine the effects of the presence of particulate matter on disinfection kinetics. Sphingomonas paucimobilis ATCC 10829 and Helicobacter pylori ATCC 43504 were used in inactivation experiments in the presence and absence of soil, corrosion, and wastewater particles. The results showed that the presence of such particles tended to inhibit chlorine and monochloramine inactivation, although the magnitude of the impact under the conditions tested was small (e.g., 1-log reduction in inactivation for several minutes of contact time in the presence of less than 1 mg/L of disinfectant).