Chemtreat, Inc.

Nicholas Seymour

William H Henderson

Vladimir Djukanovic

Oleh Weres

Robert Jeffers

A method of treating water to remove selenium and/or mercury that is dissolved in the water. The method includes adding an acid to the water to reduce the pH, adding a metal reagent to the water that is effective to reduce the selenium and/or mercury to a lower oxidation state, and then removing the reduced selenium and/or mercury from the water.

Methods of treating water to remove selenium or mercury

A method for treating water to remove a target analyte that includes adding to the water a rare earth metal salt and a coagulant, and then removing the target analyte from the water. The treatment composition can be added as a blend that includes die coagulant and the rare earth metal salt.

Enhanced inorganic coagulants for wastewater treatment

Methods are disclosed for treating water containing a target anion to remove the target anion. The methods can include preparing a treatment composition solution that contains a metal treatment agent, adjusting the treatment composition solution to a first pH that is alkaline and then to a second pH that is acidic, and contacting the treatment composition solution with the water that contains the target anion.

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Williamsburg, VA, United States of America

Nicholas Seymour