Materiały konferencyjne SEP 2023

Conducting laboratory research on the physical and chemical analysis of mine water Results of the analysis of water samples from Zakhidno-Donbaska mine, desalinated water and reverse osmosis concentrate quality indicators Indicator Units Indicators of water analysis Mine water purified water Standards ДСАНПІН 2.2.4-171-10 Concentrate after reverse osmosis Hydrogen index рН 5.85 7.0 6.5-8.5 6.1 Turbidity mg/l 16.4 0.1 ≤7.0 0.9 General stiffness mg-eq/l 146.0 1.2 ≤7.0 123.0 Calcium mg-eq/l 76.0 2.0 ≤130 1343.0 Magnesium mg-eq/l 70.0 2.0 ≤80 681 Potassium mg/l 1410.0 0.4 2-20 13 Chlorides mg/l 17772.0 5.0 ≤250 17620.0 Nitrites mg/l 95.0 2.2 ≤0.5 6.5 Sulfates mg/l 250.0 2.0 ≤250 80 Fluorides mg/l 0.4 0.2 ≤1.5 0.76 Aluminum mg/l 0.249 0.05 ≤0.1 0.04 Total iron mg-eq/l 0.238 0.02 ≤0.2 0.06 Total alkalinity mg-eq/l 1.48 1.0 ≤6.5 2.0 Dry residue mg/l 29000 90 ≤1000 34260 General mineralization mg/l 29420 90 ≤1000 28600 Laboratory installation for desalination of mine water with the separation of dry residue of reverse osmosis Spectral analysis of elemental composition of dry residue As a result of desalination of 50 liters of mine water, 35 liters of pure drinking water and 15 liters of desalination waste were obtained. After thermal distillation of the reverse osmosis desalination waste, 3.6 kg of dry residue of salt-containing chemical products were obtained. NaCl – 63,75%; CaCl 2 – 14,12%; MgCl 2 – 11,13%; KCl – 6,98%; K 2 SO 4 – 3,03%; KNO 3 – 0,52%; KHCO 3 – 0,47%. Composition of dry residue Purified water Dry salt residue Mine water