期刊
ENVIRONMENTAL TECHNOLOGY
卷 32, 期 15, 页码 1709-1718出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2011.553843
关键词
advanced oxidation; UV/H2O2; drinking water; natural organic matter; biological activated carbon
资金
- Natural Science and Engineering Research Council of Canada
- Trojan Technologies
The effects of the advanced oxidation process (AOP) of ultraviolet radiation in combination with hydrogen peroxide (UV/H2O2) on the structure and biodegradability of dissolved natural organic matter (NOM) and on the formation of disinfection by-products (DBPs) through the post-UV/H2O2 chlorination were investigated using UV reactors equipped with either low-pressure amalgam lamps or medium-pressure mercury vapour lamps. With electrical energy doses and H2O2 concentrations typically applied in full-scale UV systems for water remediation, the UV/H2O2 AOP partially oxidized NOM, reducing its degree of aromaticity and leading to an increase in the level of biodegradable species. Also, when combined with a downstream biological activated carbon (BAC) filter, UV/H2O2 AOP reduced the formation of DBPs by up to 60% for trihalomethanes and 75% for haloacetic acids. Biological activated carbon was also shown to effectively remove biodegradable by-products and residual H2O2.
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