Abstract
This article explores the efficiency of using ozone and electrical discharge methods to remove heavy metals from groundwater. Industrial and agricultural waste contaminates groundwater, leading to high concentrations of heavy metals like Cu, Fe+2, and Fe+3, which pose significant threats to human health and the environment. The objective of this work is to clean contaminated groundwater using an environmentally friendly method that does not require additional chemical reagents. During the study, as the ozone concentration increased from 100 to 500 g/hour and the pH level rose to 7.5, the concentration of Cu ions decreased from 1.20 g/hour to 0.57 g/hour, and Fe+2 reduced from 5.00 g/hour to 0.92 g/hour. The purification efficiency increased with Cu from 75% to 99%, Fe+2 from 35% to 98%, and Fe+3 was entirely removed (100%). Groundwater in Kopa village of the Ayagoz district is characterized by excessive levels of copper ions, and this method demonstrated high effectiveness in addressing the ecological issue. During the purification process, a high sediment yield was observed, significantly improving water quality. The study concludes that ozone and electrical discharge are effective, positioning this method as a promising technology for improving groundwater quality in Kazakhstan and other regions.