The municipality of the County of Pictou, NS, issued in 2010 a tender for the construction of an extension to the existing collection system and upgrades to the existing sewage treatment plant for the community of Coalburn.

The capacity of the existing treatment plant is to be expanded by 40% to 80,000 USGPD.  The upgrades include additional aeration, a second RBC unit, a tertiary filter, and improvements to the building envelope. The collection system extension was intended to service an additional 125 households with capacity for expansion.

Napier-Reid designed and provided the 3-stage BIO-ROTOR™ Rotating Biological Contactor for the secondary sewage processing to expand the existing wastewater treatment system. This RBC was selected due to the strong shaft design, simple operation, proven efficiency, and low cost.