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ANAEROBIC TREATMENT OF MINE WASTEWATER FOR THE REMOVAL OF SELENATE AND ITS CO-CONTAMINANTS
Tan, L.C.
CRC Press/Balkema, Leiden, the Netherlands. ISBN: 978-1-138-32841-9, 322 pp, 2018

Selenium (Se) pollution has led to several cases of severe aquatic ecosystem deterioration due to Se poisoning caused by bioaccumulation over time. Research was conducted to address the effect of wastewater characteristics (i.e. co-contaminants such as nitrate and sulfate, heavy metals, and pH) on the biological reduction of sulfate and to evaluate process integration for Se-laden wastewater treatment with co-contaminants. The study showed that the presence of co-contaminants can benefit Se removal provided that the concentrations are carefully monitored and appropriate operating conditions and process configurations are used. The Se removal (total Se and selenate) efficiency increased by ~30% in the presence of nitrate and/or sulfate compared to systems with selenate alone. Additionally, an integrated ion-exchange column and bioreactors process showed improved overall removal capacity for sulfate and total Se. The dissertation upon which this text is based is available at https://repository.tudelft.nl/view/ihe/uuid:747b182a-6e90-4de3-a69e-fa859185b726.



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