US Patent Issued to Evoqua Water Technologies on Nov. 25 for "Methods and systems for treating phosphogypsum-containing water" (Massachusetts, New Hampshire Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,748, issued on Nov. 25, was assigned to Evoqua Water Technologies LLC (Pittsburgh).

"Methods and systems for treating phosphogypsum-containing water" was invented by Hao Dang (Dracut, Mass.), Wenxin Du (Dover, N.H.), George Y. Gu (Andover, Mass.) and Michael J. Shaw (Derry, N.H.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for processing pretreated phosphogypsum wastewater are disclosed. The pretreated wastewater may be subjected to electrodialysis involving at least one monovalent cation selective membrane. Further downstream membrane treatment may be applied. Upstream precipitation and air-stripping techniques may optionally also be empl...