Origin of nitrogen compounds in water infiltrating into porphyry quarry, Zalas, southern Poland.
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The paper deals with the problem of the origin of nitric compounds in the mine water entering porphyry quarry. A hydrogeological study of the natural and disturbed ground water regimes as a consequence of quarrying have shown that fecal and domestic sewage was the main source of nitrogen compounds in the water entering the porphyry quarry.
The sewage contaminated the surface water which in turn infiltrated into the porphyry within the cone of depression. In addition to that, NH 4 + and NO 3 − ions penetrated into the surface water as the result of washing of nitrogen out of the soil and a pa product of biochemical and chemical changes in the soil.
A solution of unburnt explosives, used for the ground excavation was also a source of nitrogen compounds.
KeywordsJurassic Ground Water Mine Water Nitrogen Compound Ammonium Nitrate
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