Distribution Of Chlorides And Sulfates In The
Aeration Zone Of Coal Waste Landfill –
Sulfides Decomposition Kinetics And
Ground Water Acidification
Author(s)
M. Gwozdziewicz
Abstract
This article presents the chemistry of deposited mining wastes in the Debiensko
(Upper Silesia, Poland) coal mine as well as the process and dynamics of
pollutants released from the wastes located in this landfill. The main stages of
migration in the water solution have been emphasized as well as changes of
chemistry and the dynamics of their spreading. The article also shows the impact
of pollution both in the aeration zone and upon surface and underground water in
the area of landfill. It was stated that the level of water degradation caused by
depositing of coal wastes is high and it is related to chlorides and sulfates and –
in the last phase of rock weathering – with iron.
Keywords: migration of pollutants, chlorides and sulfates, sulfide oxidation.
1 Introduction
The most voluminous group of wastes produced in Poland are wastes generated
during search, mining, physical and chemical treatment of ores and other fossils.
Wastes from power generation fossil mining constitute ca 29% [2] of the overall
production of wastes in Poland. Development of forecasting methods for the
impact of coal mining waste landfills upon underground water are very
numerous but they often yield different results. In spite of the fact that each
mining waste landfill features different depositing and hydro-geological
properties as well as types of waste, we may find some common features for all
deposited wastes. For this reason, the article presents results of a simulation of
pollutants’ transport in the aeration zone as well the kinetics of distribution of
iron sulfides using the mining waste landfill \“Debiensko” as an example.
Keywords
migration of pollutants, chlorides and sulfates, sulfide oxidation.
Related Book
Other papers in this volume
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