Method for removing selenium and apparatus for removing selenium
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United States of America Patent
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Feb 16, 2021
Grant Date -
Apr 28, 2016
app pub date -
Jun 28, 2013
filing date -
Jun 28, 2013
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Abstract
A method for removing selenium according to the present invention comprises: a valence change step of adding an oxidant to a wastewater from a facility that gasifies a fuel containing selenium in a reducing atmosphere, and oxidizing the selenium to change the valence of the selenium, and a solid-liquid separation step of adding a flocculant to the wastewater, forming a floc containing the selenium for which the valence has been changed in the valence change step, and subjecting the floc to solid-liquid separation.
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