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000022328 084__ $$2WoS$$aEnvironmental Sciences
000022328 084__ $$2WoS$$aEnvironmental Studies
000022328 1001_ $$0P:(DE-HGF)0$$aBauser, G.$$b0
000022328 245__ $$aA comparison study of two different control criteria for the real-time management of urban groundwater works
000022328 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2012
000022328 300__ $$a21 - 29
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000022328 440_0 $$026323$$aJournal of Environmental Management$$v105
000022328 500__ $$3POF3_Assignment on 2016-02-29
000022328 500__ $$aThe study was performed within the project "Real-time control of a well-field using a groundwater model", a cooperation between ETH Zurich, Zurich Water Supply and TK Consult Zurich. This project was funded by the Swiss Innovation Promotion Agency CTI under Contract No. 7608.2 EPRP-IW. The author gratefully acknowledges the doctoral scholarship granted by the German National Academic Foundation.
000022328 520__ $$aWe present the comparison of two control criteria for the real-time management of a water well field. The criteria were used to simulate the operation of the Hardhof well field in the city of Zurich, Switzerland. This well field is threatened by diffuse pollution in the subsurface of the surrounding city area. The risk of attracting pollutants is higher if the pumping rates in four horizontal wells are increased, and can be reduced by increasing artificial recharge in several recharge basins and infiltration wells or by modifying the artificial recharge distribution. A three-dimensional finite elements flow model was built for the Hardhof site. The first control criterion used hydraulic head differences (Δh-criterion) to control the management of the well field and the second criterion used a path line method (%s-criterion) to control the percentage of inflowing water from the city area. Both control methods adapt the allocation of artificial recharge (AR) for given pumping rates in time. The simulation results show that (1) historical management decisions were less effective compared to the optimal control according to the two different criteria and (2) the distribution of artificial recharge calculated with the two control criteria also differ from each other with the %s-criterion giving better results compared to the Δh-criterion. The recharge management with the %s-criterion requires a smaller amount of water to be recharged. The ratio between average artificial recharge and average abstraction is 1.7 for the Δh-criterion and 1.5 for the %s-criterion. Both criteria were tested online. The methodologies were extended to a real-time control method using the Ensemble Kalman Filter method for assimilating 87 online available groundwater head measurements to update the model in real-time. The results of the operational implementation are also satisfying in regard of a reduced risk of well contamination.
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000022328 65320 $$2Author$$aReal-time control
000022328 65320 $$2Author$$aOptimal control
000022328 65320 $$2Author$$aWell field
000022328 65320 $$2Author$$aGroundwater
000022328 65320 $$2Author$$aHydraulic barrier
000022328 65320 $$2Author$$aParticle path lines
000022328 650_2 $$2MeSH$$aCities
000022328 650_2 $$2MeSH$$aFuzzy Logic
000022328 650_2 $$2MeSH$$aGroundwater: chemistry
000022328 650_2 $$2MeSH$$aRivers
000022328 650_2 $$2MeSH$$aSwitzerland
000022328 650_2 $$2MeSH$$aWater Pollutants, Chemical: chemistry
000022328 650_2 $$2MeSH$$aWater Pollution: analysis
000022328 650_2 $$2MeSH$$aWater Supply: analysis
000022328 650_7 $$00$$2NLM Chemicals$$aWater Pollutants, Chemical
000022328 650_7 $$2WoSType$$aJ
000022328 7001_ $$0P:(DE-Juel1)138662$$aHendricks-Franssen, H.J.$$b1$$uFZJ
000022328 7001_ $$0P:(DE-HGF)0$$aStauffer, F.$$b2
000022328 7001_ $$0P:(DE-HGF)0$$aKaiser, H.P.$$b3
000022328 7001_ $$0P:(DE-HGF)0$$aKuhlmann, U.$$b4
000022328 7001_ $$0P:(DE-HGF)0$$aKinzelbach, W.$$b5
000022328 773__ $$0PERI:(DE-600)1469206-5$$a10.1016/j.jenvman.2011.12.024$$gVol. 105, p. 21 - 29$$p21 - 29$$q105<21 - 29$$tJournal of environmental management$$v105$$x0301-4797$$y2012
000022328 8567_ $$uhttp://dx.doi.org/10.1016/j.jenvman.2011.12.024
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