ANALISIS KUALITAS AIR TAMBANG NIKEL BERDASARKAN NILAI TOTAL SUSPENDED SOLIDS (TSS) DAN DEWATERING DI BLOK X PADA PT. STARGATE PASIFIC RESOURCES, KABUPATEN KONAWE UTARA, PROVINSI SULAWESI TENGGARA

Abstract

The research area is in block X PT. Stargate Pacific Resources, North Konawe Regency, Southeast Sulawesi, which is part of the Sulawesi ophiolite route with complex geological conditions and still active tectonics. The research location in the East Arm of Sulawesi still has quite large potential for laterite nickel deposits. The abundance of potential for later nickel is certainly important enough to be balanced with systematic exploration activities, which also have an impact on the quality of mine water. Based on this, observations are needed in terms of water quality and how it is processed. The characteristics that influence TSS are interpreted to be due to the main factors in the form of morphological conditions and zone conditions and the environment around the air quality sampling in the research area. Water treatment in nickel mines also uses the dewatering method. Analysis of runoff water discharge from Cathment area to Sediment block X is known. The runoff water discharge at the highest rainfall is 9,230 (m3/hour) with an actual erosion value of 1,851, a particle deposition rate of 0.00694 m/second, so compartments are needed with dimensions of each compartment 5.1 meters wide and 10.2 meters long and an area area of 561.07 m2 includes sediment ponds and embankments. With an estimated suspended solid load entering the sediment pond of 8 mg/l sediment pond volume and a processing efficiency of 78%, the sediment pond maintenance schedule is a maximum of every 10 months.

Keywords: Laterite nickel deposits, Dewatering, TSS, Modeling, Water Quality.