Concomitant removal of iron and NAPLs within a mine water treatment system

摘要

Water entering the mine water treatment scheme (MWTSJ at the Blaenavon site in South Wales is co-contaminated with non-aqueous phase liquids (NAPL] arising from historic pitch and coal tar wastes. This paper presents the results of investigations into the transport of the NAPLs through the treatment scheme and the extent to which they are co-removed with ochre formed within the MWTS. The scheme comprises one settling lagoon in series with two reed beds. Water and solid samples were collected along the length of treatment scheme and were prepared by solvent extraction for quantitative and qualitative analyses by Gas Chromatography Mass Spectrometry (GC-MS).