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MINE DESIGN FOR IN SITU CONTROL OF SELENIUM AND NITRATE
Jensen, S., J. Foster, M.-C. Noel, and M. Bartlett.
11th ICARD IMWA 2018 Annual Conference, September 10-14, Pretoria, South Africa. IMWA Proceedings (Volume I):518-523(2018)

An approach is described for designing and developing a coal project for in situ control of selenium and nitrate in contact water from the mine as an alternative to engineered water treatment plants. The design integrates water management, pit design, and sequencing such that completed open pits can be backfilled and used as in situ bioreactors for attenuating selenium and nitrate. The attenuation process is well established and proven at different scales, but the hydraulic design of the backfilled pit and operational control of carbon dosing can be developed most effectively in phased field tests done concurrently with full-scale design. https://www.imwa.info/docs/imwa_2018/IMWA2018_Jensen_518.pdf



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