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Using Enhanced Coagulation to Satisfy the Disinfection By-Products Rule

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To highlight the benefits of the enhanced coagulation process, a pilot study was conducted on a surface water that contained above average organics, where the existing facility was struggling to meet the Disinfection By-Products (DBP) Rule. Using a sludge blanket clarifier and a gravity filtration column a pilot was setup at the water treatment plant. Both Aluminum Sulfate and Ferric Chloride were used as primary coagulants, but the Ferric Chloride proved to be more successful by consuming nearly half as much raw materials and by reducing a larger percentage of the organics. The Ferric Chloride was able to achieve these items through enhanced coagulation, because of its ability to depress the pH to roughly 5.7.

Keywords: disinfection by-products; enhanced coagulation; sludge blanket clarifier

Document Type: Research Article


Publication date: January 1, 2010

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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