US Patent 11772993 Removing heavy metals in a ballasted process
Patent 11772993 was granted and assigned to Evoqua Water Technologies on October, 2023 by the United States Patent and Trademark Office.
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US Patent 11772993 Removing heavy metals in a ballasted process
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Patent abstract
A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floc in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.
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Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Raymond G. Pepin
Rohan Wikramanayake
Thomas Miles
Date of Patent
October 3, 2023
Patent Application Number
17575057
Date Filed
January 13, 2022
Patent Citations
Patent Primary Examiner
CPC Code
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