循环水紫外杀菌效果评价及影响因素研究

Evaluation of bactericidal effects of UV on circulating water and the research on influencing factors

评价了紫外技术对循环水的杀菌效果、循环水水质对紫外杀菌效果的影响,并考察了运行参数如杀菌时间、紫外剂量对杀菌效果的影响。结果表明:紫外光对循环水中的3种细菌有较好的杀菌效果。当紫外照射时间为2 s,紫外剂量为0.04 J/cm2,循环水中总铁<0.5 mg/L,浊度<10 mg/L时,可使循环水中的异养菌数<1×105 mL-1。

The bactericidal effects of UV technique on circulating water and the impact of circulating water quality on UV bactericidal effects are evaluated. The impact of operation data such as sterilization time,UV dosage on bactericidal effects are investigated. The results show that UV light has comparatively good bactericidal capacity for three kinds of bacteria in circulating water. When the UV irradiation time is 2 s,UV dosage 0.04 J/cm2,total iron in circulating water〈0.5 mg/L,and turbidity〈10 mg/L,the quantity of heterotrophic bacteria is less than 1×105 mL-1.