Occurrence and fate of bulk organic matter and pharmaceutically active compounds in managed aquifer recharge: A review

Occurrence and fate of bulk organic matter and pharmaceutically active compounds in managed aquifer recharge: A review
맹승규S.K. SharmaK. Lekkerkerker-TeunG. Amy
Artificial recharge; Bank filtration; Bulk organic matter; Pharmaceutically active compounds
Issue Date
Water research
VOL 45, NO 10, 3015-3033
Managed aquifer recharge (MAR) is a natural water treatment process that induces surface water to flow in response to a hydraulic gradient through soil/sediment and into a vertical or horizontal well. It is a relatively cost-effective, robust and sustainable technology. Detailed characteristics of bulk organic matter and the occurrence and fate of pharmaceutically active compounds (PhACs) during MAR processes such as bank filtration (BF) and artificial recharge (AR) were reviewed. Understanding the fate of bulk organic matter during BF and AR is an essential step in determining pre- and/or post-treatment requirements. Analysis of organic matter characteristics using a suite of analytical tools suggests that there is a preferential removal of non-humic substances during MAR. Different classes of PhACs were found to behave differently during BF and AR. Antibiotics, non-steroidal anti-inflammatory drugs (NSAIDs), beta blockers, and steroid hormones generally exhibited good removal efficiencies, especially for compounds having hydrophobic-neutral characteristics. However, anticonvulsants showed a persistent behavior during soil passage. There were also some redoxdependentPhACs. Forexample, X-ray contrast agentsmeasured, as adsorbable organic iodine (AOI), and sulfamethoxazole (an antibiotic) degraded more favorably under anoxic conditions compared to oxic conditions. Phenazone-type pharmaceuticals (NSAIDs) exhibited better removalunder oxicconditions.Theredoxtransitionfromoxic to anoxic conditions duringsoil passage can enhance the removal of PhACs that are sensitive to redox conditions. In general, BF and AR can be included in a multi-barrier treatment system for the removal of PhACs.
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