Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603510
Title: Contamination and groundwater quality in the Birmingham aquifer
Author: Shepherd, Kevin Andrew
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 2002
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Abstract:
Sustainable development of urban aquifers requires assessment of the magnitude and variability of contamination, plus quantification of key processes controlling contaminant migration. Changing groundwater quality in the urban, Triassic sandstone, Birmingham aquifer has been investigated, along with the attenuation of chlorinated solvents, major contaminants in this system. Results from water quality surveys conducted over the last twenty years have been collated and assessed, whilst solvent sorption to aquifer lithologies has been investigated. Sorption of PCE (perchloroethylene) to aquifer sandstone is best described by linear isotherms (mean linear Kd = 0.2882:0.087 Ikg-1 ). Sorption varies with respect to lithology, does not correlate to sample foe and is under-predicted by estimates made using sample foe, hydrophobic partitioning theory and commonly applied literature Koe data. Evidence from successive water quality surveys indicates increasing levels of solvents over time, TCE (trichloroethylene) having the greatest impact upon groundwater quality. PCE levels are rising more slowly probably due to slower rates of dissolution and greater magnitude of sorption. Evidence of solvent biodegradation is limited. Closure of heavily contaminated abstraction boreholes has implications for the removal of solvents from the aquifer and long-term water quality, given the relatively limited attenuation of solvents indicated by the laboratory and field studies.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.603510  DOI: Not available
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