Full Description

The removal of natural organic matter (NOM) from raw water contributes to lowerdisinfection byproducts (DBPs) formation. NOM can be mineralized by using advancedoxidation processes (AOPs), such as vacuum-UV radiation (VUV), UV radiation plus Hsub2/subOsub2/sub(Hsub2/subOsub2/sub/UV), or VUV radiation plus Hsub2/subOsub2/sub (Hsub2/subOsub2/sub/VUV) processes. Experimental work with theHsub2/subOsub2/sub/UV process showed that 42% mineralization of NOM could be achieved after treating rawwater samples for 180 minutes. A much faster mineralization rate was observed with the VUVprocess, providing 90% mineralization of the organic matter after 120 minutes of irradiation.Also, a slightly greater mineralization was obtained with the Hsub2/subOsub2/sub/VUV process. The overallquantum yields of the NOM mineralization with the Hsub2/subOsub2/sub/UV, VUV, and Hsub2/subOsub2/sub/VUV processeswere 0.004, 0.097, and 0.016, respectively. Includes 14 references, figures.

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Edition: Vol. - No. Published: 11/01/2009 Number of Pages: 7File Size: 1 file , 890 KB