摘要
紫外消毒技术因其具有操作简单、无有害副产物、经济高效等优势,在污水处理中越来越广泛被应用。但其无剩余消毒能力,微生物在光照条件下进行修复而实现复活,从而导致出水微生物数量增多。综述了国内外紫外消毒出现的光复活现象,阐述了污水紫外消毒微生物光复活原理和控制技术。
UV disinfection is often incorporated in many wastewater treatment processes because it is simple, convenient, cost effective and free of toxic chemicals. However, its disinfecting capability ends after the treatment. Bacteria population of the effluent will increase over time due to photo-reactivation of some inactivated bacteria. The paper presents the mechanisms of photo-reactivation, its affecting factors,and three control methods of more intensive UV irradiation,combined treatment with chemical disinfectant and discharging the effluent in darkness.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2007年第11期841-843,869,共4页
Environmental Pollution & Control
基金
国家"863"高技术研究发展项目(No.2002AA601012)
上海市科委重大科技攻关项目(No.04dz12025)
关键词
紫外线
消毒
微生物
光复活
UV irradiation Disinfection Microorganism Photo-reactivation
