自来水消毒对内毒素及微生物处理效果分析

发布时间：2018-10-21 18:58

【摘要】：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、大肠杆菌和耐热大肠菌群。结论现有自来水处理工艺可以满足指示菌达标要求,但内毒素仍有一定残留。
[Abstract]:Objective to investigate the changes of endotoxin and microbial indexes in water treatment process, and to provide basis for further optimization of water quality. Methods in August 2013, water samples were collected from water source of Z Waterworks (Hanjiang Water Source) and B Waterworks (Yangtze River Source) in Wuhan, Hubei Province. Endotoxin test was performed by the Limulus test of bacterial endotoxin in the Pharmacopoeia of the people's Republic of China (version 2005). The detection of Escherichia coli and heat-resistant Escherichia coli was carried out according to GB/T5750.12-2006. Results the content of endotoxin in inlet water of Z Waterworks in Wuhan was 281.36 EU/m / L, the endotoxin content in incoming water of Water Plant B was 216.32 EU/m / L, the total clearance rate of endotoxin in ex-factory water was 29.37 EU/m / L / L, respectively. The total number of bacteria in the source water of ZZNB Waterworks was 4.24 脳 104CFU/m L and 2.06 脳 104CFU/m L, respectively, and the total coliform group contents in the source water of ZXB Waterworks were all 2 300 MPN/100 mL, Escherichia coli were 266 and 1 100 MPN/100 mL, respectively, and fecal coliform bacteria were subdivided into fecal coliform bacteria. No total coliform bacteria were detected in the water of the factory, respectively (345 and 1 700 MPN/100 mL). E. coli and heat-resistant coliforms. Conclusion the existing tap water treatment process can meet the requirements of indicator bacteria, but endotoxin still remains.
【作者单位】：华中科技大学同济医学院公共卫生学院环境与健康教育部重点实验室;
【基金】：中央高校基本科研业务费资助(HUST2014TS050)
【分类号】：R123.1

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