Abstract：Objective To investigate the application of disinfectants and their disinfection effects in drinking water from rural water plants with a daily water supply capacity of one thousand tons and covering ten thousand people in Hunan Province, and to provide references for choosing disinfectants of rural water plants. Methods Rural water plants with a daily water supply capacity of one thousand tons and covering ten thousand people in Hunan Province were monitored quarterly for water quality and sanitation from 2019 to 2022. The disinfection effects of drinking water were analyzed and assessed according to the Standards for Drinking Water Quality (GB5749-2006). Results Among the rural water plants monitored in Hunan Province from 2015 to 2019, 65.17% were disinfected by high purity chlorine dioxide and sodium hypochlorite. The qualified rates of microbiological indicators in water samples disinfected by liquid chlorine (96.54%) and sodium hypochlorite (96.42%) were both higher than those in water samples disinfected by compound chlorine dioxide (94.63%), high purity chlorine dioxide (92.03%), bleaching powder (90.62%) and other disinfectants (94.19%) (P<0.05). The qualified rate of disinfectant allowance indicator in water samples disinfected by compound chlorine dioxide (95.76%) and liquid chlorine (95.76%) were both higher than those in water samples disinfected by high purity chlorine dioxide (93.38%), sodium hypochlorite (88.93%) and bleaching powder (with the lowest qualified rate being 80.40%) (P<0.05). The qualified rates of disinfectant allowance in tap water disinfected by commonly-used disinfectants were all higher than those in out-factory water (P<0.05). The qualified rate of microbiological indicators in water samples treated with standardized use of disinfection equipments was higher than that in water samples treated with occasional use of disinfection equipments. Conclusion There are differences in advantages, disadvantages and applicability among different drinking water disinfectants. The disinfection process should be fully implemented for rural water supply. It is necessary to ensure standardized use of disinfection equipments, strengthen control of disinfection reaction and give full play to the disinfection effects of disinfectants.
张杏娥, 周纯良, 安宁. 湖南省农村饮用水消毒剂及其消毒效果分析[J]. 实用预防医学, 2023, 30(8): 940-943.
ZHANG Xinge, ZHOU Chunliang, AN Ning. Disinfectants and their disinfection effects in rural drinking water in Hunan Province. , 2023, 30(8): 940-943.
2023, Vol. 30 
