Managed aquifer recharge is a robust barrier in the multi-barrier approach to supply safe drinking
water. The removal performance of gesomin and 2-methylisoborneol through managed aquifer
recharge was investigated using batch and column experiments. Batch experiments were carried out
to investigate the removal of geosmin and 2-methylisoborneol (MIB) in the presence of different
types of biodegradable organic matter using different types of water. Five different types of water
spiked with 70?293 ng/L of geosmin and MIB were used in batch reactors, and complete removal of
geosmin and MIB (down to the detection limit) was achieved in all cases. Soil column studies showed
that biodegradation contributed to the removal of geosmin and MIB by 23 and 31%, respectively
(empty bed contact time: 17 hours). The removal of geosmin and MIB appeared to be influenced
more by microbial activity than the initial concentrations of geosmin and MIB. Adsorption was found
to be the dominant mechanism (major role) followed by biodegradation (minor role) for geosmin and
MIB removals during soil passage. Managed aquifer charge can therefore be used as a robust barrier
to remove taste and odor (T&O) causing compounds.