Methods of treating water with powder activated carbon to reduce organic matter content
AssigneeChemtreat, Inc.
InventorDouglas A. GODWIN
Life of this patent
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Abstract
Methods are described that reduce the amount of organic matter in water, including reducing an amount of total organic carbon in water. The method includes adding powder activated carbon to the water; mixing the powder activated carbon in the water; and separating the powder activated carbon from the water. Also described are a method for reducing glycol content in water containing glycols, and a method for reducing glycol content in a steel mill wastewater stream containing glycols.
Claims20
A method for reducing an amount of total organic carbon (TOC) in water containing more than 25 mg TOC/L water, the method comprising:
- adding powder activated carbon to the water;
- mixing the powder activated carbon in the water;
- and
- separating the powder activated carbon from the water.
A method for reducing glycol content in water containing glycols, the method comprising:
- adding powder activated carbon to the water;
- mixing the powder activated carbon in the water so that at least some of the glycols adsorb onto the powder activated carbon;
- and
- separating the powder activated carbon with the adsorbed glycols from the water.
A method for reducing glycol content in a steel mill wastewater stream containing glycols, the method comprising:
- measuring an amount of total organic carbon (TOC) in the wastewater stream;
- and
- when the measured amount of TOC is greater than a predetermined threshold:
- adding powder activated carbon to the wastewater stream;
- mixing the powder activated carbon in the wastewater stream;
- and
- separating the powder activated carbon from the wastewater stream.
Dependencies are inferred from the claim text.