Client: Saxton Borough Municipal Authority
Year Completed: 2009
Project Cost: $7,000,000
Gwin, Dobson & Foreman, Inc. recently designed and administered the construction of a wastewater treatment plant improvement project in Bedford County, PA. This $7 million project puts the system in compliance with the Chesapeake Bay nutrient requirements and provides additional capacity for wet weather flows and service area expansion. The new treatment system has consistently achieved biological nutrient removal standards.
The project included the following elements:
- Expansion of treatment plant capacity from 0.4 MGD to 0.6 MGD
- New pumping station with three (3) 750 GPM raw sewage submersible pumps
- New suspended growth biological reactors for organic treatment and biological nutrient removal consisting of a 600,000 GPD Intermittent Cycle Extended Aeration System (ICEAS). The system (Sanitaire) uses continuous activated sludge aeration technology for organic removal and nitrification. An intermittent anoxic mixing cycle is used for denitirification. Settling is achieved by an adjustable decant mechanism. All physical and biological processes occur in a single reactor.
- Phosphorus removal is attained through chemical precipitation (alum)
- New headworks including comminution and screening
- Conversion of existing aeration/settling tanks to aerobic sludge digesters
- New aeration blowers for biological treatment and aerobic sludge digestion
- Chlorine contact tank additions
- Instrumentation and control system (SCADA) for monitoring and operation of treatment system
This is the third plant upgrade project that Gwin, Dobson & Foreman, Inc. has designed for the Authority. GD&F has served as the consulting engineer to the Saxton Borough Municipal Authority for over 25 years.