Lemay Disinfection Improvements

Lemay Disinfection Improvements

Owner  - MSD
Client      -   HDR
Location   - St. Louis, MO

Intelligent Design and Construction Solutions, LLC completed the design for the instrumentation and control of the revised disinfection systems at the Lemay Wastewater Treatment Plant. The disinfection systems consist of ultraviolet disinfection, as well as a chemical disinfection system. There are two disinfection systems at Lemay WWTP, a dry weather system (0-240MGD) which utilizes ultraviolet (UV) technology and a wet-weather flow system (0-120MGD) which utilizes a chlorination/dechlorination chemical system. The chemical system uses sodium hypochlorite injection for disinfection and sodium bisulfate injection to reduce the chlorine residual. IDCS selected the instrumentation required for the controls and designed the controls to be integrated into the existing control system at Lemay. IDCS also provided construction services for this project. These included answering requests for information, shop drawing review and final punch-list review.



Chicago Office
200 West Adams
Suite 1825
Chicago, IL 60606

New York Office
60 E. 42nd
Suite 4600
New York, NY 10165

St. Louis Office
500 N. Broadway
Suite 1450
St. Louis, MO 63102

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