A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Medium‐Pressure UV/Chlorine Advanced Oxidation of Taste and Odor Compounds
Installations of medium‐pressure ultraviolet (UV) disinfection systems continue to increase, and some systems have excess dose capacity that could potentially be used for a low‐level advanced oxidation process (AOP). While UV/hydrogen peroxide has been commonly used in advanced oxidation applications, UV/chlorine (Cl2) is much less understood and may have limited applications for some of these systems. This work investigates the role of Cl2 residual, pH, alkalinity, and nitrate on this AOP and the performance that can be achieved at conditions typical to drinking water treatment plants. Results show that a 40–60% reduction of 2‐methylisoborneol and geosmin could be achieved with ambient water quality conditions by adding Cl2 and significantly increasing the applied UV energy to several hundred mJ/cm2 MS2 reduction equivalent dose, potentially bringing these compounds below the odor threshold. Experiments with the addition of nitrate demonstrate that it can also serve as a radical generator in waters containing low levels of nitrate.
Medium‐Pressure UV/Chlorine Advanced Oxidation of Taste and Odor Compounds
Installations of medium‐pressure ultraviolet (UV) disinfection systems continue to increase, and some systems have excess dose capacity that could potentially be used for a low‐level advanced oxidation process (AOP). While UV/hydrogen peroxide has been commonly used in advanced oxidation applications, UV/chlorine (Cl2) is much less understood and may have limited applications for some of these systems. This work investigates the role of Cl2 residual, pH, alkalinity, and nitrate on this AOP and the performance that can be achieved at conditions typical to drinking water treatment plants. Results show that a 40–60% reduction of 2‐methylisoborneol and geosmin could be achieved with ambient water quality conditions by adding Cl2 and significantly increasing the applied UV energy to several hundred mJ/cm2 MS2 reduction equivalent dose, potentially bringing these compounds below the odor threshold. Experiments with the addition of nitrate demonstrate that it can also serve as a radical generator in waters containing low levels of nitrate.
Medium‐Pressure UV/Chlorine Advanced Oxidation of Taste and Odor Compounds
Springer, James C. (author) / Kashinkunti, Ramesh (author) / Hong, Ying (author)
Journal ‐ American Water Works Association ; 110 ; E16-E27
2018-09-01
12 pages
Article (Journal)
Electronic Resource
English
Chlorine Dioxide for Taste and Odor Control
| Wiley | 1986
Taste and Odor Control with Chlorine Dioxide
| Wiley | 1946
Low‐pressure UV/Cl2 for advanced oxidation of taste and odor
| Wiley | 2012
Chlorine Derivatives of Phenol Causing Taste and Odor
| Wiley | 1959
Oxidation of Five Earthy‐Musty Taste and Odor Compounds
| Wiley | 1986