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首页> 外文期刊>International Journal of Environmental Research and Public Health >On-Line Monitoring of Escherichia coli in Raw Water at Oset Drinking Water Treatment Plant, Oslo (Norway)
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On-Line Monitoring of Escherichia coli in Raw Water at Oset Drinking Water Treatment Plant, Oslo (Norway)

机译：在奥斯陆（挪威）奥赛特饮用水处理厂对原水中的大肠杆菌进行在线监测

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The fully automated Colifast ALARMTM has been used for two years for daily monitoring of the presence/absence of Escherichia coli in 100 mL raw water at Oset drinking water treatment plant in Oslo, Norway. The raw water is extracted from 35 m depth from the Lake Maridalsvannet. E. coli was detected in 18% of the daily samples. In general, most samples positive for E. coli were observed during the autumn turnover periods, but even in some samples taken during warm and dry days in July, with stable temperature stratification in the lake, E. coli was detected. The daily samples gave useful additional information compared with the weekly routine samples about the hygienic raw water quality and the hygienic barrier efficiency of the lake under different weather conditions and seasons. The winter 2013/2014 was much warmer than the winter 2012/2013. The monitoring supported the hypothesis that warmer winters with shorter periods with ice cover on lakes, which may be a consequence of climate changes, may reduce the hygienic barrier efficiency in deep lakes used as drinking water sources.
机译：挪威奥斯陆Oset饮用水处理厂使用全自动Colifast ALARM TM 两年来每天监测100 mL原水中大肠杆菌的存在与否。原水从Maridalsvannet湖提取35 m深度。每日样本中有18％检测到大肠杆菌。一般而言，在秋季营业期间可观察到大多数大肠杆菌阳性样本，但即使在7月的温暖和干燥日子中采集的一些样本中，由于湖中温度分层稳定，仍可检测到大肠杆菌。与每周的常规样本相比，每日样本还提供了有关不同天气条件和季节下湖水的卫生原水质量和卫生屏障效率的有用信息。 2013/2014年冬季比2012/2013年冬季温暖得多。监测结果支持这样的假设，即气候变化可能会导致湖面结冰时间较短的较暖冬季，这可能会降低用作饮用水源的深水湖泊的卫生屏障效率。

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