真空臭氧消毒机对家庭饮用水消毒效果的实验研究

目的 观察真空臭氧消毒机对家庭饮用水的消毒效果。方法 以大肠杆菌（Escherichia coli)8099作为指示菌，按照 GB /T5750-2006《生活饮用水标准检验方法》对不同水量、水温、盛水容器下的饮用水消毒效果进行检测。结果 当消毒机箱内压强为50 kPa时，对各水样消毒15 min后，50、100、150 ml水样的平均杀灭率分别为（79.14±0.01）%、（70.99±0.00）%、（64.12±0.02）%；常温（22℃）和低温（4℃）水样的平均杀灭率分别为（70.99±0.00）%、（92.01±0.00）%；100 ml烧杯、250 ml烧杯、平皿（150 mm）所盛放水样的平均杀灭率分别为（67.48±0.01）%、（70.99±0.00）%、（97.75±0.00）%。结论 在本实验条件下，所用真空臭氧消毒机对家庭饮用水中的大肠杆菌有一定的杀菌效果，具有开发成为家庭日常杯量饮用水消毒机器的潜力。

Experimental study on the disinfection effect of vacuum ozone disinfector on family drinking water

Objective To observe the disinfection effect of vacuum ozone disinfector on family drinking water. Methods Escherichia coli 8 099 was used as the indicator microorganism to test the disinfection effect of drinking water under different water yield, water temperature and water container according to GB /T5750-2006 Standard Test Method for Drinking Water". Results Under the condition that the pressure was 50kPa in the disinfection the water samples for 15 minutes, , the average killing rate of 50 ml, 100 ml, 100 ml water samples were (79.14±0.01)%, (70.99±0.00)%, (64.12±0.02)%, respectively. The average killing rate of room temperature (22℃) and low temperature (4℃) water samples were (70.99±0.00)%, (92.01±0.00)%, the average killing rate of the sterilization of 100ml beaker, 250ml beaker, and plate was(67.48±0.01)%, (70.99±0.00)%, (97.75±0.00)% after disinfection of all water samples for 15 min. Conclusion Under the condition of this experiment, the vacuum ozone disinfector has a certain bactericidal effect on the Escherichia coli in family drinking water, and has the potential to develop for drinking water disinfection in the household daily cup.