Journal Article

PreJuSER-11663

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Real-time management of an urban groundwater well field threatened by pollution

Bauser, G. ; Hendricks-Franssen, H.-J.FZJ* ; Stauffer, F. ; Kaiser, H. P.FZJ* ; Kuhlmann, U. ; Kinzelbach, W.

2010
American Chemical Society Columbus, Ohio

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Please use a persistent id in citations: doi:10.1021/es100648j

Abstract: We present an optimal real-time control approach for the management of drinking water well fields. The methodology is applied to the Hardhof field in the city of Zurich, Switzerland, which is threatened by diffuse pollution. The risk of attracting pollutants is higher if the pumping rate is increased and can be reduced by increasing artificial recharge (AR) or by adaptive allocation of the AR. The method was first tested in offline simulations with a three-dimensional finite element variably saturated subsurface flow model for the period January 2004-August 2005. The simulations revealed that (1) optimal control results were more effective than the historical control results and (2) the spatial distribution of AR should be different from the historical one. Next, the methodology was extended to a real-time control method based on the Ensemble Kalman Filter method, using 87 online groundwater head measurements, and tested at the site. The real-time control of the well field resulted in a decrease of the electrical conductivity of the water at critical measurement points which indicates a reduced inflow of water originating from contaminated sites. It can be concluded that the simulation and the application confirm the feasibility of the real-time control concept.

Keyword(s): Cities (MeSH) ; Computer Simulation (MeSH) ; Soil: analysis (MeSH) ; Switzerland (MeSH) ; Time Factors (MeSH) ; Water Pollution: analysis (MeSH) ; Water Supply: analysis (MeSH) ; Soil ; J

Note: The study was performed within the project "Real-time control of a well-field using a groundwater model", a cooperation between ETH Zurich, Zurich Water Supply, and TK Consult Zurich. This project was funded by the Swiss Commission for Technical Innovation CTI under Contract No. 7608.2 EPRP-IW. The author gratefully acknowledges the doctoral scholarship granted by the German National Academic Foundation.

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Research Program(s):

1. Terrestrische Umwelt (P24)

Appears in the scientific report 2010

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Database coverage:
; JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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