Pharmaceutical removal during managed aquifer recharge with pretreatment by advanced oxidation

Water Science and Technology: Water Supply - Tập 12 Số 6 - Trang 755-767 - 2012
K. Lekkerkerker-Teunissen1,2, Ewnetu Tefera Chekol3, Sung Kyu Maeng4, Kebreab Ghebremichael5, Corine J. Houtman6, A.R.D. Verliefde1,7, J.Q.J.C. Verberk1, Gary Amy1,8,3, Judith Dijk1
1Delft University of Technology, PO 5048, 2600 GA, Delft, The Netherlands
2Dunea, PO 34, 2270 AA, Voorburg, The Netherlands
3UNESCO-IHE Institute for Water Education, Westvest 7, 2601 DA Delft, The Netherlands
4Sejong University, 98 Gunja-Dong, Gwangjin-Gu, Seoul 143-747, South Korea
5Patel School of Global Sustainability, University of South Florida, Tampa, FL, USA
6The Water Laboratory, PO Box 734, 2300 RS Haarlem, The Netherlands
7Particle and Interfacial Technology Group, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Gent, Belgium
8King Abdullah University of Science and Technology, 4700 KAUST, Thuwal 23955-6900, Kingdom of Saudi Arabia

Tóm tắt

Organic micropollutants (OMPs) are detected in sources for drinking water and treatment possibilities are investigated. Innovative removal technologies are available such as membrane filtration and advanced oxidation, but also biological treatment should be considered. By combining an advanced oxidation process with managed aquifer recharge (MAR), two complementary processes are expected to provide a hybrid system for OMP removal, according to the multiple barrier approach. Laboratory scale batch reactor experiments were conducted to investigate the removal of dissolved organic carbon (DOC) and 14 different pharmaceutically active compounds (PhACs) from MAR influent water and water subjected to oxidation, under different process conditions. A DOC removal of 10% was found in water under oxic (aerobic) conditions for batch reactor experiments, a similar value for DOC removal was observed in the field. Batch reactor experiments for the removal of PhACs showed that the removal of pharmaceuticals ranged from negligible to more than 90%. Under oxic conditions, seven out of 14 pharmaceuticals were removed over 90% and 12 out of 14 pharmaceuticals were removed at more than 50% during 30 days of experiments. Under anoxic conditions, four out of 14 pharmaceuticals were removed over 90% and eight out of 14 pharmaceuticals were removed at more than 50% over 30 days' experiments. Carbamazepine and phenazone were persistent both under oxic and anoxic conditions. The PhACs removal efficiency with oxidized water was, for most compounds, comparable to the removal with MAR influent water.

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Water Science and Technology: Water Supply

Tập 12 Số 6

755-767

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