scholarly journals Response to Comment on “Production of Abundant Hydroxyl Radicals from Oxygenation of Subsurface Sediments”

2016 ◽  
Vol 50 (9) ◽  
pp. 4890-4891 ◽  
Author(s):  
Ruirui Zhao ◽  
Man Tong ◽  
Menggui Jin ◽  
Songhu Yuan
Keyword(s):  
Hydroxyl Radicals ◽  
Subsurface Sediments

Production of Abundant Hydroxyl Radicals from Oxygenation of Subsurface Sediments

2015 ◽  
Vol 50 (1) ◽  
pp. 214-221 ◽  
Author(s):  
Man Tong ◽  
Songhu Yuan ◽  
Sicong Ma ◽  
Menggui Jin ◽  
Deng Liu ◽  
...  
Keyword(s):  
Hydroxyl Radicals ◽  
Subsurface Sediments

Trihalomethane Formation Potential and Disinfection

1992 ◽  
Vol 27 (1) ◽  
pp. 185-202
Author(s):  
C.R. Erland Jansson
Keyword(s):  
Hydroxyl Radicals ◽  
Giardia Lamblia ◽  
Test Results ◽  
Formation Potential ◽  
Trihalomethane Formation Potential ◽  
Resistant Species ◽  
Low Levels ◽  
High Concentrations ◽  
Operational Data ◽  
Surface Water Supply

Abstract The UVOX process was developed to reduce the high concentrations of trihalomethanes, a potentially hazardous disinfection by-product found in a surface water supply for a community in northeastern Saskatchewan. Pilot plant tests were conducted at a throughput of 1.25 l/s utilizing UV to produce hydroxyl radicals from photolysis of H2O2 with air cooled UV units. These tests continued through 1985 andl986 to provide operational data for all seasons of the year. Test results indicated that the UVOX process was effective in reducing trihalomethane formation potential to very low levels. Recent concerns have also centred on the biocidal effectivenesss of disinfectants, particularly when applied to inactivation of resistant species of microogranisms, such as the cysts of Giardia lamblia. The UVOX process in a single pass configuration slightly enhanced the ability of UV to inactivate Giardia cysts.

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