WATER TREATMENT PLANT UPGRADE, WILTON, CT

Owner: South Norwalk Electric and Water
Engineer: Metcalf & Eddy Inc.
Contract Amount: $23,982,464
Completion Date: August 2008

Retrofit of existing 10mgd Filtration Plant with ZENON ENVIRONMENTAL ultrafiltration membranes. Existing facilities and appurtenances will be modified to accommodate the new process, and the sedimentation basins will be converted for new use. Several building additions are also required. Work includes:

• Construction of stormwater basin and new access road in area of existing Backwash Lagoon
• Installation of temporary settling tubes/launders
• Demolition of aeration basin and construction of new electrical and generator rooms
• Construction of new building expansion and installation of rapid mix, flocculation and membrane filtration equipment and appurtenances
• Removal of roof tees from sedimentation basins and installation of fill and new slab
• Rehabilitation of two Automatic Backwash Filters
• Upgrade of existing alum and fluoride chemical storage areas
• Building modifications: new lobby area, complete with bathrooms and entrance facilities, new loading dock to accommodate a vestibule and handicap ramp
• Upgrade the architectural features of building
• Rehabilitation of the HVAC system, including addition of sprinkler system, pipe modifications and pump installation
• Provide PLC based operating system with integration into existing SCADA system