饮用水紫外-氯联合消毒工艺研究进展

Advances in Research of Combined Ultraviolet-Chlorine Disinfection Process for Drinking Water Treatment

消毒是水处理过程中灭活致病细菌的最关键环节。紫外线(ultraviolet,UV)氯联合消毒工艺是当下水处理消毒领域的发展方向之一。在介绍UV消毒原理和消毒效果的基础之上,综述了UV氯联合消毒体系对水中致病细菌的灭活效果,阐述了UV辐射剂量及光照强度、氯投加时间和氯投加种类等因素对消毒效果的影响,为UV氯联合消毒工艺在水厂中的实际应用提供参考。

Disinfection is the most critical part of inactivating pathogenic bacteria in water treatment process.Ultraviolet(UV)-chlorine combined disinfection process is one of the development directions in the field of current water disinfection.The scope of this article is to give an overview of the application of UV radiation at 254 nm for water treatment and the disinfection efficiency.Another focus is on the inactivation of pathogenic bacteria in water by UV-chlorine combined disinfection process.The influence of UV radiation dose and light intensity,the dosage of chlorine and the types of chlorine on the disinfection effect of the UV-chlorine combined disinfection process are outlined to provide a reference for the optimal design of the combined disinfection treatment process in water treatment plant.