Improving Water Quality & Plant Reliability
The Massachusetts Town of North Attleborough was faced with the challenge of meeting new National Pollutant Discharge Elimination Systems permit limits for both nitrogen and phosphorous. The solution was a $23 million state-of-the-art upgrade to the town’s Wastewater Treatment Facility (WWTF) to comply.
The facility, which collects and treats industrial and domestic wastewater from the towns of North Attleborough and Plainville, now meets those stringent nitrogen and phosphorus permit limits.
At the Forefront of Funding & Cost Saving Success
We assisted the Town of Attleborough with being one of the first communities to receive the new 0% State Revolving Fund (SRF) loan for nutrient removal projects. This saves ratepayers approximately $8 million in interest costs compared with the normal 2% SRF loan.
Improving Both Water Quality & Plant Reliability
Nutrient upgrades included a new, advanced 5-Stage Bardenpho process for biological nitrogen and phosphorus removal, coupled with a new tertiary filtration system. This project is the first in the nation to use tertiary cloth disc filters to meet very stringent phosphorus limits. The project also improved plant reliability and energy efficiency.
In addition, two new buildings were designed to house new high efficiency aeration blowers, chemical feed systems, and tertiary treatment tanks. Upgrades were also made to pumping systems, headworks, odor control, electrical and communication systems, and the plant water system.
Approximately eight miles of conduit and 50 miles of wire were installed, and approximately 4,500 cubic yards of concrete was poured before this major upgrade was complete.
Services Snapshot
Tighe & Bond provided engineering evaluation and design services, pilot testing, environmental and permitting services, State Revolving Fund (SRF) application assistance, construction administration, and commissioning services. We also provided building design, system upgrades, and comprehensive electrical improvements.
