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Rodiyah Nursani
Universitas Prabumulih
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Analysis of Quicklime and Organic Chemical Coagulant Doses in Acid Mine Water Management at PT Lematang Coal Lestari (LCL), Gunung Raja, Muara Enim, South Sumatra Suhardiman Gumanti; Rodiyah Nursani
Jurnal Indonesia Sosial Teknologi Vol. 6 No. 3 (2025): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v6i3.8922

Abstract

Mine acid water (AAT) is one of the liquid wastes produced by coal mining activities. The existence of this liquid waste can hurt the environment, so it needs to be managed. This management aims to minimize the negative impact that will be caused. This study aims to determine the stages of AAT management and analyze the need for lime and chemical organic coagulants for coal mining at PT Lematang Coal Lestari (LCL). The method used in this study is by field observation, interview methods, and documentation as supporting data. The result of this study is that the stages of AAT management carried out by PT LCL are known, starting from AAT pumping, mixing chemical organic coagulant, measuring the pH of the inlet channel, liming the inlet channel, checking the color and pH of the outlet line water, mixing the chemical organic coagulant and liming the outlet channel if necessary, as well as settling. The lime dosage required by PT LCL is 0.32 gr/l, and the chemical organic coagulant requirement is 0.11 ml/l in one AAT water management.
ANALISIS REVEGETASI PADA LAHAN REKLAMASI TAMBANG BATU KAPUR DISPOSAL 4 DI PT SEMEN BATURAJA Tbk Randu Ramadhanu; Ridho Yovanda; Rodiyah Nursani
Jurnal Humaniora & Sosial Sains Vol 2 No 3 (2025)
Publisher : Pojok Publisher

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Abstract

PT Semen Baturaja Tbk carries out limestone mining activities using open pit methods that can cause environmental damage, especially to the structure and function of the soil. To reduce these negative impacts, post-mining reclamation activities are carried out through revegetation methods to restore the ecological conditions of the land. This study aims to analyze suitable plant species and evaluate the success rate of revegetation on Disposal 4 reclamation land with a planting year of 2020. The methods used include identifying plant species, measuring diameter, height and plant health, and quantitative analysis based on success indicators according to Permenhut P.60 / Menhut-II / 2009. From the research that has been conducted, it was found that the main use of plants is centered on sengon (Albizia chinensis) and tamarind (Tamarindus indica). The evaluation results show that the success of revegetation is quite good, indicated by the number of plants per hectare that meet minimum standards and a plant health level exceeding 80%. This study emphasizes the importance of selecting adaptive plant species and implementing appropriate maintenance in supporting the success of post-mining land reclamation.
Co-Authors Randu Ramadhanu Ridho Yovanda Suhardiman Gumanti