Sedimentation Analysis of the Donbass Region Mine Water Sludge after Softening with a Regenerative Product of the Self-Rescuer Wastes
Keywords:
SEDIMENTATION ANALYSIS, MINE WATER, RECYCLING, MINE SELF-RESCUEERS, POTASSIUM NADPEROXIDEAbstract
One of the stages in the study of softening the Donbass region mine waters by the regenerative waste product of the self-rescuers with the chemically bound oxygen (the main component of which is the potassium superoxide KO2) tested at the coal mines named after A. F. Zasyadko, M. I. Kalinina and others, is the study of the formation peculiarities of the precipitation of the general hardness salts from mine waters, precipitated by the reagent for the subsequent selection of the purification process optimal means.
Surface water sources in the Donbass region are mainly formed by mine waters. These mine waters have a high salinity (about 2000-3000 ppm), which has a negative impact on the ecological systems. When surface and underground waters are polluted, the possibility of their use for drinking purposes and economic activity is not simply excluded, but the balance of the ecological systems is disturbed and a negative result appears, if not immediately, then in the not so distant future. The use of mine waters of the Donbass region, previously purified and softened by the OCH-3 regenerative product from the self-rescuers waste, for household purposes of enterprises, would not only allow the disposal of hazardous waste requiring neutralization, but also reduce the flow of polluting waters of increased mineralization into the surface and underground sources.
The dispersed characteristics of the mine water after softening with the use of the oxygen-containing product OKCh-3 from the waste of self-rescuers with chemically bound oxygen are investigated by the weight and sedimentation analysis. The sizes of solid particles by fractions and their mass are determined. Using the analytical method developed by N. N. Tsurupa, the minimum and maximum sizes of deposited particles are calculated, the kinetics of the deposition process is studied, and the polydispersity parameter is calculated. The rate and time of the particles settling precipitated after the mine water treatment with the waste of the regenerative product are calculated. The influence of a flocculant (polyacrylamide) on the sedimentation process of the mine water sludge softened with the regenerative product is investigated.
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