Evaluation of an environmentally sustainable UV-assisted water treatment system for the removal of Bacillus globigii spores in water

被引:1
|
作者
Silva, R. G. [1 ]
Szabo, J. [2 ]
Namboodiri, V. [3 ]
Krishnan, E. R. [1 ]
Rodriguez, J. [4 ]
Zeigler, A. [5 ]
机构
[1] APTIM, Test & Evaluat Facil, 1600 Gest St, Cincinnati, OH 45204 USA
[2] US EPA, Natl Homeland Secur Res Ctr, Cincinnati, OH 45268 USA
[3] US EPA, Natl Risk Management Res Lab, Cincinnati, OH 45268 USA
[4] Aqua Treatment Serv, Mechanicsburg, PA USA
[5] Waterline Technol, Mansfield, OH USA
来源
WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY | 2018年 / 18卷 / 03期
关键词
B; globigii; disinfection; filtration; green technology; membrane; UV; BACTERIAL BIOTHREAT AGENTS; DISINFECTION BY-PRODUCTS; SUBTILIS SPORES; DRINKING-WATER; INACTIVATION; RESISTANCE;
D O I
10.2166/ws.2017.165
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Development of greener water treatment technologies is important for the production of safe drinking water and water security applications, such as decontamination. Chlorine assisted disinfection is common and economical, but can generate disinfection byproducts (DBPs) that may be of health concern. DBPs are formed due to the reaction of chlorine with naturally occurring organic and inorganic substances in water. Currently, various innovative technologies are being developed as alternative approaches for preventing DBPs during water treatment. In this study, we evaluated the effectiveness of a novel combination of high efficiency flow filtration and UV disinfection treatment system for the removal of Bacillus globigii (B. globigii) spores in water. The filtration system consists of a charged membrane filter (CMF) that not only helps to remove suspended particles but also reduces the impact of other impurities including bio organisms. In order to get most performance details, the CMF was evaluated at clean, half-life, and end of life (EOL) conditions along with 100% UV transmittance (UVT). In addition, the effectiveness of the UV system was evaluated as a stand alone system at 100% and 70% EOL intensity. The study was conducted at the US EPA's Test and Evaluation (T&E) Facility in Cincinnati, OH, using B. globigii, a surrogate for B. anthracis spores. This non-chemical environmentally-friendly CMF/UV combination system and the stand alone UV unit showed greater than 6.0 log removal of B. globigii during the tests.
引用
收藏
页码:968 / 975
页数:8
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