Further information on the reduction of micropollutants in wastewater

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Sediment-water interactions of pharmaceutical residues in the river environment

Posted: Apr 24, 2015
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Summarized by: Gerly Hey

Zhou and Brrodbank (2014) investigated the occurrence of 9 pharmaceuticals in both river water and sediment by taking sample at different times and locations such as the effluent recipient water and downstream and upstream of River Medway.

All 9 pharmaceuticals were found in all samples analyzed, showing diclofenac as the most abundant followed by carbamazepine. In addition, high concentrations of pharmaceuticals were found in River Medway compared to other rivers in the UK, being the discharge of WWTP effluent as major source of these substances in the river. On the other hand, highest concentration of the pharmaceuticals were obtained in both water and sediment samples during the month of June and probably due to high consumption or poor removal at the treatment plant. In addition, the highest concentrations obtained at the sediment samples downstream the river during one of the sampling periods indicates sorption and accumulation of pharmaceuticals in the river sediments.

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