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
- 맹승규; S.K. Sharma; K. Lekkerkerker-Teun; G. 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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