Winona Water Treatment Plant Upgrades

Surface Water Plant Upgrades for Filtration & Pretreatment

Weston & Sampson was selected to provide design, bidding assistance, SRF loan application assistance, and on-site resident and office oversight during construction for updates to the Winona Water Treatment Plant (WTP) in Peabody, Massachusetts.

Our team designed upgrades to all process, mechanical, electrical, architectural, and site equipment for this 50-year-old conventional 5.5-MGF surface water treatment plant. The design included a new building addition to help with sequencing of new chemical feed systems construction; it also provided additional general storage space. The design also included upgrades to the WTP laboratory, control room, administrative spaces, and system-wide communications upgrades, as well as removal of significant residual material and rehabilitation of the original unlined lagoons. Weston & Sampson provided full-time, in-house, on-site and office engineering services from groundbreaking through plant startup and project closeout. In addition, we worked closely with the client, the contractors and the OPM throughout the duration of the project.

Location
Peabody, MA
Year
2019
Hub
Build , Design , Engineer
Industry
Municipal
Services
Visualization, Water
Categories
3D Virtual and Interactive Models, Water Treatment
Contact Us
Photo202_Weston20Sampson_Winona20Water20Treatment20Plant20Upgrades20Nightime20Building.jpg
Photo204_Weston20Sampson_Winona20Water20Treatment20Plant20Upgrades20Completed20Oxidation20Tanks.jpg

Project Highlights

  • Surface Water Treatment Plant Upgrade
  • Rehabilitation Estimated $19 Million Construction Cost
  • DAF (Retrofit)
  • Renovation of old Unlined Lagoons including Residuals Removal
  • In-House Design Services from Inception through Completion
  • SRF Loan Application & Reimbursement Assistance
  • In-House, Full-Time Construction Services

We conducted water treatment piloting to compare conventional sedimentation against dissolved air flotation (DAF); additionally, we compared dual media filtration against granular activated carbon (GAC) filtration. Following piloting, it was decided that the WTP should be converted to DAF, with the existing flocculation basin being converted to house the new DAF equipment. During the initial design phase, the plant was downgraded to 3.0 mgd due to water supply limitations. Our team redesigned the existing sedimentation basins for utilization as new oxidation tanks to help with seasonal manganese control. As part of our efforts, a new pond aeration system for additional manganese control was installed. Following replacement of the filter underdrain systems, the existing gravity filters were converted to GAC.

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