The study of leachability and toxicity of sludge after neutralization of Saraka and Robule AMD wastewaters

作者:
Gardić Vojka , Marković Radmila , Masuda Nobuyuki , Sokolović Jovica , Petrović Jelena , Đorđievski Stefan , Božić Dragana
作者单位:
Mining and Metallurgy Institute, Bor, Bor, Serbia , International Center for Research and Education on Mineral Engineering and Resources, Akita University, Tegata Gakuen-machi, Akita, Japan , University of Belgrade, Technical Faculty, Bor, Serbia
摘要:
Acid mine drainage (AMD) waters are one of the most important ecological risks at the global level because of its high heavy metals content and strong acidity. Treatment of AMD water is a complex and expensive. One of the most widely used treatment process is the neutralization process of AMD. The result of neutralization is the production of sludge which may contain various other (heavy) metals, depending on the chemical characteristics of the mine water treated. In this paper, leachability and toxicity of the sludges obtained during the neutralization process of wastewater from Saraka and Robule acid mine drainage and the sludges after the stabilization process at different temperatures is tested. Sludge produced in the neutralization process of Robule AMD R4 (40) and stabilized on 105°C and 200°C shows a H8-corrosiveness characteristic. Stabilized sludge show tendency to lower leachability of zinc and copper, but without influence on sulphate leachability. Sludges that show a H8-corrosiveness needs additional stabilization/neutralization pretreatment prior temperature treatment.
语种:
EN,SR
DOI:
10.5937/JMMA1701017G
来源期刊:
Journal of Mining and Metallurgy. Section A: Mining
出版商:
University of Belgrade, Technical Faculty Bor
年,卷(期):
2017;53(1):17-29