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All Journal Journal of Degraded and Mining Lands Management Jurnal Teknologi Berkelanjutan
Noor, Ihsan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Materials Science & Nanotechnology Transportation

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Peranan Sistem Swampy Forest Pada Pengolahan Air Asam Tambang Dari Kegiatan Pertambangan Batubara Noor, Ihsan; Arifin, Yudi Firmanul
Jurnal Teknologi Berkelanjutan Vol 13 No 2 (2024): Vol 13 No. 02
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtb.v13i2.277

Abstract

Most coal mining activities in South Kalimantan apply the open pit method, which has the potential to produce acid mine drainage. As wastewater from coal mining activities, acid mine water has high acidity and metal content. Mitigation of the handling of acid mine drainage can be grouped into two processing techniques: active processing using conventional methods by neutralizing the acidity by applying quicklime. Still, in the end, this processing is considered very expensive, and passive processing is relatively cheaper but has limited processing capacity, so development with the Swampy Forest system is required. The acid mine drainage that has occurred and which has been collected in the post-mining lake is then channeled to the Swampy Forest system processing pond, which has been given organic material, and the specified types of hyperaccumulator grass and trees have been planted to change the water quality which does not meet the quality standard values to meet it. quality standard values under applicable regulations. The Swampy Forest system is proven to significantly improve water quality to meet applicable regulatory compliance requirements with a cheaper and environmentally friendly process.
Hydrological modeling of reclaimed catchment area and pit lake for the management of degraded post-mining land Triwibowo, Didik; Elma, Muthia; Suhartono, Eko; Riduan, Rony; Noor, Ihsan
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.7901

Abstract

Open-pit coal mining temporarily alters natural landscapes, resulting in degraded overburden dumps and the formation of pit lakes. In Indonesia, post-mining landforms must undergo reclamation to support sustainable land use. This study evaluates the hydrological capacity of a reclaimed area functioning as the catchment for the Paringin pit lake by applying two hydrological models: the National Rural Electric Cooperative Association (NRECA) and the F.J. Mock model. Using an integrated approach that combines remote sensing, GIS-based spatial analysis, and field-based observations—including meteorological data, real-time inflow monitoring using aerial sensors, and Total Suspended Solids (TSS) measurement—both models successfully simulated monthly inflow and showed good agreement with field observations. Under a tropical climate with over 3,000 mm of annual rainfall and evaporation exceeding 1,000 mm, the catchment-to-lake area ratio of 6.4:1 was found to support sustainable inflow volumes ranging from 0.078 to 0.103 m³/s throughout the year. Although the estimated erosion rate of 3.51 t/ha/year remains within acceptable limits, average TSS levels (89.13 mg/L) exceeded the regulatory threshold of 50 mg/L for raw water supply and aquaculture use. The results affirm the effectiveness of the NRECA and F.J. Mock model in supporting post-mining water management where monitoring data are scarce. This study contributes to the growing need for hydrological connectivity assessment in post-mining landscapes and supports improved planning and sustainable management of pit lakes as integrated components of degraded post-mining land.
Co-Authors Didik Triwibowo Eko Suhartono Muthia Elma Rony Riduan Yudi Firmanul Arifin