紫外线灭活水中病原微生物

INACTIVATION OF PATHOGENIC MICROORGANISMS BY ULTRAVIOLET

介绍了紫外线(UV)消毒在水处理领域的研究情况。采用合适的UV剂量,紫外线对水中常见的病原微生物有显著的灭活效果,但对配水系统中孳生的生物膜没有明显灭活作用,并且天然水体中的微生物对UV的抵抗力明显高于实验室培养的纯种微生物。另外UV消毒光源的研究已经扩展到太阳能领域,有学者对太阳光消毒饮用水进行了研究,并提出了相关的预测模型。

Ultraviolet （UV） disinfection for water and wastewater treatment is introduced in this paper. When proper UV dose was added, the ordinary pathogenic microorganism such as Cryptosporidium Pacvum, Giardia muris, Legionella pneumophila, Bacillus subtilis and adenovirus, could be inactivated effectively, however, UV has little influence on biofilm in the water distribution system. The indigenous microoganism in natural water was much more resistant to UV than the purified microorganism. Additionally, source of UV has been extended to the field of solar energy, and some researchers put forward the prediction model, based on the inactivation of microorganism in drinking water by sunlight.