Optimization of Mine Wastewater Treatment with Sump Water Circulation Treatment Method

The mining industry is one of the sectors that play an important role in the economy, but mining activities often produce hazardous waste for the environment, such as mine wastewater. This research aims to optimize mine wastewater management by applying the sump water circulation treatment method. This research uses an experimental research method in the PT Antereja Mahada Makmur mining area, which operates in the mining area of PT Multi Harapan Utama, Loa Kulu District, Kutai Kartanegara Regency, and East Kalimantan. Data collection techniques were carried out by field observation. The data that was collected is then analyzed qualitatively. The results showed a higher decline than planned in the remaining volume of sump 90. The impact of this decline was the achievement of the coal exposure target in November 2022. This shows that using the sump water circulation treatment method has successfully optimized the treatment of mine wastewater and has a positive impact on reducing the remaining volume of sump 90 so that the coal exposure target can be achieved effectively