MODELING OF STREAM WATER QUALITY AND TOTAL MAXIMUM DAILY LOAD (TMDL) DUE TO OPEN-PIT COAL MINE WATER TREATMENT IN THE TROPICS. (CASE STUDY: LATI RIVER, EAST KALIMANTAN)
River as a water resource needs to be managed properly to maintain their carrying capacity and load capacity. River water quality is strongly influenced by land use of the river watershed. The Lati River which watershed has a mining site of Lati Mine Operation (LMO), is used as a receiving water...
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| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/69116 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | River as a water resource needs to be managed properly to maintain their carrying
capacity and load capacity. River water quality is strongly influenced by land use
of the river watershed. The Lati River which watershed has a mining site of Lati
Mine Operation (LMO), is used as a receiving water body that receives effluent
discharge from mine water treatment. Water from coal mining activities has such
characteristics as low pH also high concentration of total suspended solid (TSS),
iron (Fe), and manganese (Mn). Furthermore, Lati River is a tropical area with
heavy rainfall, so the amount of wastewater generated from mining activities that
need to be managed is very huge. Based on the result of pollution index (PI)
calculation which refers to the second-class quality standard for surface water in
Government Regulation Number 22 of 2021, Lati River is categorized as a river
with moderately polluted status. The main objective of this research is to evaluate
the water quality of Lati River along 18,379 km, from upstream to downstream, and
its total maximum daily load by considering various simulation scenarios. So, the
amount of pollutant load that can be discharged into Lati River without causing the
river to be polluted and the watershed environmental management can be
determined. Simulations were carried out using QUAL2Kw software to simulate pH
and TSS parameters. Meanwhile, Fe and Mn parameters are simulated using mass
balance calculations. As results, the total maximum daily load of Lati River for TSS,
Fe, and Mn are 9017.298 kg/day, 162.3113 kg/day, and 27.3946 kg/day respectively |
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