Modeling and remediation of ground water contamination at the Engelse Werk wellfield

Contaminants have been threatening the Engelse Werk wellfield located between the town of Zwolle and the IJssel River in the Netherlands. Chemical analysis of water samples taken in production wells, both at the IJssel River and near the Zwolle railway station, indicated elevated concentrations of m...

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Bibliographic Details
Published in:	Ground water monitoring & remediation Vol. 18; no. 3; pp. 114 - 124
Main Authors:	Wang, X, Ngo, T.X, Zhou, Y, Nonner, J.C
Format:	Journal Article
Language:	English
Published:	Oxford, UK Blackwell Publishing Ltd 1998
Subjects:	ABASTECIMIENTO DE AGUA ACENAFTENE AGUAS SUBTERRANEAS APPROVISIONNEMENT EN EAU AQUIFERS BENCENO BENTAZON BENTAZONE BENZENE BROMACIL BROMACILO CAPA FREATICA COMPOSE ORGANIQUE COMPUESTOS ORGANICOS CONTAMINANTES CONTAMINANTS CORRIENTES SUBTERRANEAS COURANT SOUTERRAIN DEBIT EAU SOUTERRAINE FLOW RATE GASTO GROUNDWATER GROUNDWATER FLOW GROUNDWATER POLLUTION GROUNDWATER TABLE HYDROGEOLOGY MODELE DE SIMULATION MODELOS DE SIMULACION NAPPE SOUTERRAINE NETHERLANDS ORGANIC COMPOUNDS PAISES BAJOS PAYS BAS POLLUANT POLLUTANTS POLLUTION DE L'EAU SOUTERRAINE POLUCION DE AGUAS SUBTERRANEAS POZOS PUITS SIMULATION MODELS STEADY STATE FLOW TRANSIENT FLOW TRANSPORT PROCESSES TRICHLOROETHANE WATER SUPPLY WELLS
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Summary:	Contaminants have been threatening the Engelse Werk wellfield located between the town of Zwolle and the IJssel River in the Netherlands. Chemical analysis of water samples taken in production wells, both at the IJssel River and near the Zwolle railway station, indicated elevated concentrations of mainly organic contaminants including benzene, bentazon, acenaftene, trichloroethane, and bromacil. Immediate contaminant prevention and remediation measures are needed to safeguard the production wells. Ground water flow and transport models were developed to assist in the design of remediation strategies. Ground water flow models indicated that the IJssel River and a waste disposal ditch at the railway station are within the capture zone of the wellfield. A chloride transport model simulated minimum travel times in the order of four to 13 years for contaminants in the IJssel River to reach the production wells of the wellfield. A transport model for benzene was set up to advise on the remediation measures to be taken at the waste disposal ditch to clean up the contamination in the upper aquifer between this site and the Engelse Werk wellfield. The designed remediation system consists of 12 pumping wells with a combined capacity of 1650 m3/day. The system is capable of reducing the benzene levels at the threatened production wells at the Engelse Werk wellfield to a permissible level below 0.1 microgram/L within a period of 5 years
Bibliography:	1997090510 T01 istex:E5C0EC84E5E32601149BFD5A38E6DF4168F93661 ark:/67375/WNG-JBVBJ2B1-L ArticleID:GWMR114 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	1069-3629 1745-6592
DOI:	10.1111/j.1745-6592.1998.tb00735.x