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Activated hybrid zero-valent iron treatment system and methods for generation and use thereof
(United States. Patent and Trademark Office, 2021-08-10)
Activated iron media and methods for generating and using the activated iron media. The method involves aqueous suspension comprising a zero-valent iron, ferrous iron, and an iron oxide to provide a settled solid and ...
Selenium removal using aluminum salt at conditioning and reaction stages to activate zero-valent iron (ZVI) in pironox process
(United States. Patent and Trademark Office, 2021-12-28)
A system containing a reactor vessel including zero valent iron media, a source of a conditioning additive, a source of a reaction additive, and a process control subsystem is disclosed. A method for reducing a concentration ...
Removal Of Selenocyanate From Refinery Sour Water Stripper Wastewater
(United States. Patent and Trademark Office, 6/21/2022)
Systems and methods for removing heavy metals such as selenium from wastewater with zero valent iron media. Air may be introduced directly into a reaction zone of a fluidized bed reactor filled with the media to catalyze ...