| Abstract: | Ozone was tested at the Moores Bridges WTP as a replacement for chlorine for oxidizing dissolved manganese. Two points of ozone application were tested, raw and settled water. Dissolved manganese appeared to be much more readily oxidized with a lower ozone dose when ozone was applied to the settled water than when it was applied the raw water. Apparently the TOC concentration of the water affected ozone's ability to oxidize manganese by exerting an ozone demand which must be overcome. Because of the results of the pilot testing, a decision was made to ozonate settled water rather than raw water to oxidize the manganese. |
