目的了解自来水厂中各处理环节内毒素与微生物指标的变化,为进一步优化水质提供依据。方法于2013年8月份,分别采集湖北省武汉市Z水厂(汉江水源)和B水厂(长江水源)的水源水、混凝、沉淀、砂滤和出厂水5个环节的水样,内毒素检测采用《中华人民共和国药典》(2005版)中细菌内毒素鲎试剂法,菌落总数、总大肠菌群、大肠杆菌和耐热大肠杆菌检测按照GB/T5750.12-2006《生活饮用水标准检验方法 -微生物指标》进行。结果武汉市Z水厂进厂水内毒素含量为281.36 EU/m L,出厂水中内毒素含量为38.95 EU/m L;B水厂进厂水内毒素含量为216.32 EU/m L,出厂水中内毒素含量为29.37 EU/m L;Z、B水厂内毒素的总清除率分别为86.16%和86.42%;Z、B水厂源水中菌落总数分别为4.24×104CFU/m L和2.06×104CFU/m L,出厂水中均未检出;Z、B水厂源水中总大肠菌群含量均>2 300 MPN/100 m L,大肠杆菌分别为266和1 100 MPN/100 m L,粪大肠菌群分别为345和1 700 MPN/100 m L,出厂水中均未检出总大肠菌群、大肠杆菌和耐热大...
【英文摘要】
Objective To investigate changes in endotoxin and microbiological parameters after conventional drinking water treatment in main drinking water plants in Wuhan city and to provide a scientific basis for improvement of drinking water quality. Methods The water samples were collected in August 2013 from drinking water plant Z and B with source water from Yangze River and Hanjiang River. The level of endotoxin was determined with limulus amebocyte lysate test described in Chinese Pharmaeopoeia( 2005 edition); ...
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