Full Description

In this research, UV-ozone and UV-hydrogen peroxide based advanced oxidationtechnologies were evaluated and compared for the elimination of disinfection byproductformation potentials in raw drinking water supplies of the Greater Vancouver RegionalDistrict (GVRD). Combined UV-ozone treatment had a significant impact on the totalorganic carbon (TOC) concentration as well as the chloroform formation potential.Approximately 50% of the TOC in the raw water could be mineralized within 60 minutes oftreatment. The chloroform formation potential was reduced by 80%. UV-hydrogen peroxidetreatment had no significant impact on the overall TOC concentration. Some limitedreduction in chloroform formation potential could be achieved with UV-hydrogen peroxide.However, high UV doses were required. For the source water investigated, UV-ozonetreatment is a more effective advanced oxidation process for reducing the disinfection byproductformation potential than UV-hydrogen peroxide treatment. The significantly betterperformance of the UV-ozone process is the result of the direct and indirect oxidation of DBPprecursors by molecular ozone and OH radicals. Includes 9 references, table, figures.

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Edition: Vol. - No. Published: 11/15/2004 Number of Pages: 11 File Size: 1 file , 700 KB