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AWWA WQTC71366
- Comparative Analysis of the Mineralization of NOM by Using the VUV and H2O2/UV Processes
- Conference Proceeding by American Water Works Association, 11/01/2009
- Publisher: AWWA
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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 H<sub>2</sub>O<sub>2</sub>(H<sub>2</sub>O<sub>2</sub>/UV), or VUV radiation plus H<sub>2</sub>O<sub>2</sub> (H<sub>2</sub>O<sub>2</sub>/VUV) processes. Experimental work with theH<sub>2</sub>O<sub>2</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 H<sub>2</sub>O<sub>2</sub>/VUV process. The overallquantum yields of the NOM mineralization with the H<sub>2</sub>O<sub>2</sub>/UV, VUV, and H<sub>2</sub>O<sub>2</sub>/VUV processeswere 0.004, 0.097, and 0.016, respectively. Includes 14 references, figures.
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