Model-Based Evaluation of Reduction Strategies for Micropollutants from Wastewater Treatment Plants in Complex River Networks

Ort, Christoph, Hollender, Juliane, Schaerer, Michael and Siegrist, Hansruedi (2009) Model-Based Evaluation of Reduction Strategies for Micropollutants from Wastewater Treatment Plants in Complex River Networks. Environmental Science & Technology, 43 9: 3214-3220. doi:10.1021/es802286v


Author Ort, Christoph
Hollender, Juliane
Schaerer, Michael
Siegrist, Hansruedi
Title Model-Based Evaluation of Reduction Strategies for Micropollutants from Wastewater Treatment Plants in Complex River Networks
Journal name Environmental Science & Technology   Check publisher's open access policy
ISSN 0013-936X
Publication date 2009-05-01
Year available 2009
Sub-type Article (original research)
DOI 10.1021/es802286v
Open Access Status Not yet assessed
Volume 43
Issue 9
Start page 3214
End page 3220
Total pages 7
Editor Jerald Schnoor
Place of publication United Sates
Publisher American Chemical Society
Language eng
Subject C1
Abstract A model based on graph theory was developed to efficiently evaluate the impact of the effluent from 742 wastewater treatment plants (WWTPs) on micropollutant loading throughout all river catchments in Switzerland. Model results agree well with measured loads for 12 compounds in river water samples, revealing mean predictive accuracy factors between 0.8 and 3.4. Subsequently, pollutant concentrations were predicted for river sections downstream from 543 WWTPs where hydrological information was available, and compared with recent recommendations for water quality criteria. At base flow conditions, carbamazepine concentrations (parent compound only) are ubiquitously below a water quality criterion of 0.5 μg L−1. In contrast, the sum of diclofenac and its metabolites is expected to exceed the corresponding water quality criterion of 0.1 μg L−1 in 224 river sections. If diclofenac cannot be eliminated at the source, the model suggests a directed upgrade of 173 WWTPs to meet the condition that concentrations are never to exceed this water quality criterion.
Keyword THE-DRAIN CHEMICALS
reduction strategies
micropollutants
Wastewater
river network
daily mass fluxes
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes Available online 3/23/09

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Advanced Water Management Centre Publications
 
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Created: Thu, 03 Sep 2009, 18:10:12 EST by Mr Andrew Martlew on behalf of Advanced Water Management Centre