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目的研究LED紫外线装置对野外用水壶中饮用水消毒效果,为野外便携式水壶中饮用水消毒应用提供科学依据。方法采用细菌定量检测方法,对某LED紫外线装置消毒水壶中饮用水的效果进行观察。结果该LED紫外线消毒装置由9芯紫外线光源组合,有效波长为280 nm,紫外线辐射强度为1.8 m W/cm~2。用该紫外线装置直接照射装有1 L水的水壶内水体5 min,可使含900 cfu/ml的大肠杆菌数降到0 cfu/ml。结论该LED紫外线装置对野外用壶装饮用水具有较好的消毒效果。
Objective To study the disinfection effect of LED ultraviolet device on drinking water in field water bottles and to provide a scientific basis for the disinfection and application of drinking water in field portable water bottles. Methods Bacterial quantitative detection method was used to observe the effect of drinking water in a LED ultraviolet disinfection kettle. Results The LED UV disinfection unit was composed of a 9-core UV light source with an effective wavelength of 280 nm and an UV radiation intensity of 1.8 mW / cm2. Directly irradiating the water in a kettle containing 1 L of water with the UV device for 5 min reduced the number of E. coli containing 900 cfu / ml to 0 cfu / ml. Conclusion This LED UV device has a good disinfection effect on potable drinking water in the field.