A Field Trial for In-Situ Bioremediation of 1–2, DCA
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Published:2001
Mark Dyer, Erwin van Heiningen, Jan Gerritse, 2001. "A Field Trial for In-Situ Bioremediation of 1–2, DCA", Geoenvironmental Engineering: Geoenvironmental Impact Management: Proceedings of the third conference organized by the British Geotechnical Association and Cardiff School of Engineering, Cardiff University, and held in Edinburgh on 17–19 September 2001, R. N. Yong, H. R. Thomas
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Historic spillages of chlorinated hydrocarbons at a vinyl chloride plant (Rotterdam Botlek area in The Netherlands) have lead to contamination of the underlying aquifer. The principal contaminant is 1,2-dichloroethane (1,2-DCA). The contamination is temporarily contained by a pump-and-treat system. A field trial was carried out to investigate the feasibility of treating the dissolved phase of 1,2-DCA via reductive dechlorination by injection of an aqueous solution of methanol, ammonium chloride and sodium chloride into the confined aquifer using an array of 8 boreholes. Biodegradation of 1,2-DCA was localised. This was attributed to limited mixing of the carbon substrate within the test zone. In addition, clogging of recharge wells complicated groundwater circulation.
INTRODUCTION
GROUNDWATER CHEMISTRY
FIELD TESTS
RESULTS
GROUNDWATER MODELLING
8.0 CONCLUSIONS
REFERENCES
ACKNOWLEDGEMENTS
