Bradford Well Treatment Plant Phase III Improvements

Partnership

Environmental Partners was built on the core philosophy that a strict focus on client service through partnership creates added value for our clients.

What's New

Partnership

Environmental Partners was built on the core philosophy that a strict focus on client service through partnership creates added value for our clients.

What's New

Bradford Well Treatment Plant Phase III Improvements

Plymouth, Massachusetts

Overview

The Bradford Well and Treatment facility is a 1.5 MGD groundwater supply treatment plant. The facility was constructed in 1973, and upgraded in 1992 to include chemical addition facilities for pH adjustment and disinfection. In 2004, the Town of Plymouth retained the services of Environmental Partners to complete Phase I Improvements which included various recommended improvements to the physical infrastructure, operations, and groundwater supply. As a result, the Town constructed a new satellite well (Well No. 2) in 2005. The original filtration system was last used in 2005 directly preceding the construction of the new well. When the new well was placed into service the water quality was far superior to the existing well (Well No. 1), and did not require any treatment for iron or manganese. However, after months of continuous production, source water iron and manganese levels increased, and sequestering facilities were implemented. Although the sequestering system resulted in a temporary improvement in distribution system water quality, source water iron and manganese levels continued to increase beyond levels which can be effectively controlled by sequestering.

Approach

Upon recognizing the need to restore the original pressure filtration system to reduce source water iron and manganese, Environmental Partners provided preliminary and final design services for a 1.5 MGD greensand filtration facility including: pilot testing; facility assessment and conceptual design; final design; permitting; and preparation of opinion of probable construction costs. The project is currently under MADEP review, and once approved Environmental Partners will provide bid and construction phase services for the project. In an effort to reduce construction costs and maximize the use of existing infrastructure, the building shell will be reused and interior systems such as mechanical process, HVAC, plumbing, and electrical systems will be replaced with new, modern systems. The existing lagoon will be decommissioned and new concrete lined residuals drying beds will be constructed. The treatment process includes pH adjustment with sodium hydroxide, oxidation and disinfection with sodium hypochlorite, and pressure filtration with anthracite and manganese greensand. The original pressure filters were inspected by Environmental Partners and will be reused and rehabilitated as part of this project. The expected bid date for the project is Spring/Summer of 2009.