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Title (Primary) Water and solute balances in recultivated lignite mining dump soils–field data and lysimeter experiments
Author Knappe, S.; Haferkorn, U.; Mattusch, J.; Meißner, R.; Rupp, H.; Wennrich, R.
Journal Water Air and Soil Pollution
Year 2004
Department ANA; BOPHY; BOFO
Volume 157
Issue 1-4
Page From 85
Page To 105
Language englisch
Abstract Specific problems of water and solute balancing in the central German post-lignite-mining district are caused by the almost unknown interactions between surface water, seepage and groundwater in the unsaturated zone of mining dumps. This paper presents the findings of studies using lysimeter and seepage groundwater measuring systems designed to investigate the water balance and the migration of inorganic components in the vadose zone of recultivated dumps. Despite the heterogeneous tertiary layers of the three lysimeter monoliths studied, the quantity of seepage occurring at a depth of 3 m as well as the evapotranspiration and the soil water regime were almost the same in the 4 years of the investigation. The high variability of the ion balances in seepage reflects inhomogeneities in tertiary dump material and can be explained by substrate properties interacting with the soil's pH. Very high seepage conductivities are caused by coal containing high levels of pyrite with a low pH and high acid potential. These conductivities are caused by comparatively high concentrations of ions of sulphate, iron, aluminium, calcium, magnesium and heavy metals. The results confirm the impact of ventilated and pyrite-containing dump substrates for groundwater quality.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=4239
Knappe, S., Haferkorn, U., Mattusch, J., Meißner, R., Rupp, H., Wennrich, R. (2004):
Water and solute balances in recultivated lignite mining dump soils–field data and lysimeter experiments
Water Air Soil Pollut. 157 (1-4), 85 - 105