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MWWTP Disinfection System Modification		 heightener
Location:  
St. Paul, MN
Owner: Metropolitan Waste Water Treatment Plant
General Contractor: NewMech Companies Inc
Architect/Engineer: Brown and Caldwell
Square Footage:  
Construction Cost: 8 Million
Year Complete: 2007
Scope of Work: Construction of a new effluent disinfection system and building:
• NewMech was the self performing GC hired to decommission the existing hazardous chlorine system and install the new disinfection system within the shutdown limits for water treatment.
• decommissioning of the existing gaseous chlorine and sulfur dioxide systems
• systems were replaced with a sodium hypochlorite (for disinfection) and sodium bisulfate (for de-chlorination) systems
• new Disinfection Building was constructed to house the liquid chemical storage, feed pumps and related equipment
• Modifications of the existing Chlorination Operations Building were needed to house the chlorination system for the RAS and gravity thickener applications.
• On time completion of the project and under budget




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