Pharmaceutical residues in wastewater treatment works effluents and their impact on receiving river water

Various pharmaceutical residues are being discharged from wastewater treatment works (WTW) effluents, the impact of which on river water quality is of high relevance to environmental risk assessment. The concentrations of eleven pharmaceutical compounds were determined in three WTWs in England, and...

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Bibliographic Details
Published in:Journal of hazardous materials 2009-07, Vol.166 (2), p.655-661
Main Authors: Zhou, J.L., Zhang, Z.L., Banks, E., Grover, D., Jiang, J.Q.
Format: Article
Language:English
Subjects:
Applied sciences
Carbamazepine - analysis
Chemical engineering
Continental surface waters
Diclofenac - analysis
Dilution
Exact sciences and technology
Filtration
Freshwater
General purification processes
Indomethacin - analysis
Liquid chromatography–tandem mass spectrometry
Liquid-liquid and fluid-solid mechanical separations
Natural water pollution
Pharmaceutical Preparations - analysis
Pharmaceuticals
Pollution
Propranolol - analysis
River
Rivers - chemistry
Safety
Sulfamethoxazole - analysis
United Kingdom
Wastewater
Wastewaters
Water Pollutants, Chemical - analysis
Water treatment and pollution
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Summary:Various pharmaceutical residues are being discharged from wastewater treatment works (WTW) effluents, the impact of which on river water quality is of high relevance to environmental risk assessment. The concentrations of eleven pharmaceutical compounds were determined in three WTWs in England, and the river Ouse receiving effluents from Scaynes Hill WTW. Results show that five compounds propranolol, sulfamethoxazole, carbamazepine, indomethacine and diclofenac were detected in all wastewater and river water samples, with carbamazepine showing the highest concentrations (up to 2336 ng L −1) in WTW influent. Different compounds were removed to different extent in the WTWs, varying from 43 to 92%, with the highest performance obtained by the WTW with tertiary treatment (sand filtration). The pharmaceutical residues from Scaynes Hill WTW were eventually discharged into the river Ouse, causing an elevation in their concentrations downstream of the outfall. This was confirmed by the good agreement between measured concentrations and those predicted by a simple dilution model.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2008.11.070