KAJIAN KUALITAS LIMBAH CAIR KEGIATAN PERTAMBANGAN BIJIH NIKEL PT. ANEKA TAMBANG TBK, HALMAHERA TIMUR, MALUKU UTARA

Penelitian ini bertujuan untuk mengetahui kualitas limbah cair yang terdapat di dalam kolampengendapan, mengetahui kualitas air laut, dan analisis spasial pengaruh buangan limbah cair terhadaplingkungan. Metode yang digunakan pada penelitian ini adalah metode survei. Teknik sampling yangdigunakan adalah purposive sampling.Hasil data kualitas air akan dibandingkan dengan baku mutulimbah cair dan juga baku mutu air laut. Hasil penelitian menunjukkan bahwa parameter-parameterkualitas limbah cair memenuhi baku mutu limbah cair. Begitu pula dengan kualitas air laut. Nilai yangditunjukkan baik oleh data sekunder maupun data primer belum melebihi batas maksimal yangdipersyaratkan oleh baku mutu limbah cair kegiatan pertambangan bijih nikel.Kata kunci : pertambangan bijih nikel, kualitas limbah cair, kualitas air lau

KAJIAN KUALITAS LIMBAH CAIR KEGIATAN PERTAMBANGAN BIJIH NIKEL PT. ANEKA TAMBANG Tbk, HALMAHERA TIMUR, MALUKU UTARA

PT. Aneka Tambang is a state company in mining. One of them is mining nickel ore in Tanjung Buli, East Halmahera, North Maluku undertaken by Yudhistira Bumi Bhakti Company. The mining which is open pit mining. Nickel ore mining process produces liquid waste that can affect the nature and the environment. Therefore, the aims of this study are 1) Knowing the quality of liquid waste contained in sedimentation ponds when it is compared to the standard of liquid waste quality, 2) Knowing the quality of the sea water around the outlet of the exhaust compared to the standard of sea water quality, 3) Spacial analysis of the influence of liquid waste on the environment. The method used in this thesis was purposive sampling. This method is used and be based on the position of settling ponds used for liquid waste sedimentation.The number of water samples was 5 for liquid waste and 6 for seawater samples that exist around the liquid waste outlet. The result of water quality data will be compared with the standard of liquid waste and the standard of sea water quality. The result showed that the quality parameters of liquid waste effluent meets the quality standards, including the quality of the sea water. The value showed from the primary and secondary data have not exceeded the maximum limit required by effluent quality standard of nickel ore mining activities. On the other hand, liquid waste produced by the process of nickel ore mining is still in a safe threshold to be discharged into waters, so it has no impact on the nature and the environment around the mining area