New process offers physical-chemical alternative to biological method
By Dave Karlovich, Vladimir Djukanovic, and Brad Buecker
A critical issue at coal-fired power plants — those remaining and many of those that have shut down — is how to remove selenium from wet scrubber effluent and ash pond wastewater. However, industries such as mining, oil refining, and others face similar difficulties where wastewaters from material extraction or process treatments contain selenium. Heretofore, selenium removal has been capital intensive, as the standard removal methods involved microbiological treatment with large and complex systems. This article outlines fundamental concepts of a new process that can remove selenium via efficient physical-chemical techniques.
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