Your single point of reference for all your Geotechnical Inquiries
REDUCING LIFE-CYCLE COSTS OF PASSIVE MINE WATER TREATMENT BY RECOVERY OF METALS FROM TREATMENT WASTES (2016)
In compost bioreactor systems, a commonly deployed technology at passive mine water treatment sites, metals accumulate in the treatment system substrate. Ultimately, this substrate becomes exhausted and requires disposal. An assessment was undertaken using a case study site in northern England, investigating how metal recovery might be used to reduce the whole life-cycle cost of treatment. The large-scale system at Force Crag mine harnesses bacterial sulphate reduction, primarily to remove zinc within a compost substrate.
Data presented in this paper suggest that recovery of metals from treatment system substrates might offer substantial passive treatment system life-cycle cost reductions. At Force Crag, it is estimated that discounted life-cycle costs can be reduced from €1.63M to €1.12M over 10 years. Allowances for substrate decontamination processes should therefore be considered by treatment system operators from project inception, in order that these savings can be realised.
Proceedings IMWA 2016, Freiberg/Germany | Drebenstedt, Carsten, Paul, Michael (eds.) | Mining Meets Water – Conflicts and Solutions
School of Civil Engineering and Geosciences, Newcastle University