期刊
BIORESOURCE TECHNOLOGY
卷 165, 期 -, 页码 96-104出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.03.094
关键词
Trace organic contaminant (TrOC); Anoxic membrane bioreactor; Biosorption Aerobic biodegradation; Redox conditions
资金
- University of Wollongong, Australia
- Thanh Hoa provincial government (Viet Nam)
- Shoalhaven Water
Simultaneous nitrification/denitrification and trace organic contaminant (TrOC) removal during waste-water treatment by an integrated anoxic-aerobic MBR was examined. A set of 30 compounds was selected to represent TrOCs that occur ubiquitously in domestic wastewater. The system achieved over 95% total organic carbon (TOC) and over 80% total nitrogen (TN) removal. In addition, 21 of the 30 TrOCs investigated here were removed by over 90%. Low oxidation reduction potential (i.e., anoxic/anaerobic) regimes were conducive to moderate to high (50% to 90%) removal of nine TrOCs. These included four pharmaceuticals and personal care products (primidone, metronidazole, triclosan, and amitriptyline), one steroid hormone (17 beta-estradiol-17-acetate), one industrial chemical (4-tert-octylphenol) and all three selected UV filters (benzophenone, oxybenzone, and octocrylene). Internal recirculation between the anoxic and aerobic bioreactors was essential for anoxic removal of remaining TrOCs. A major role of the aerobic MBR for TOC, TN, and TrOC removal was observed. (C) 2014 Elsevier Ltd. All rights reserved.
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