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New Mohawk Water Treatment Plant

Montgomery Watson and the City of Tulsa, Oklahoma
Clearwells, Oklahoma

In this 6 million-gallon rectangular clearwell owned by the Tulsa Metropolitan Utility Authority, the disinfection credit is based on a T10 ratio of 0.60.  The original design configuration featured a serpentine flow pattern and a computed T10 ratio of 0.63.  By adding perforated cross baffles after each turn, T10 was increased to 0.70, thus meeting the disinfection credit requirement with a 16 percent safety margin.



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