Virden Sanitary Treatment Rehabilitation

HEI provided engineering services for the rehabilitation of the north treatment plant activated sludge unit. The project includes the removal and replacement of all components of the activated sludge unit interior including the steel bulkheads, clarifier wall and grout, air supply lines and bubblers, influent and drain piping, access catwalk and approach stairway, clarifier drive motor, motor control center, associated electrical and collateral work. Preparation and re-coating of the concrete tank and access stairway to remain in place along with the replacement of the telescopic valve which regulates the water level in the polishing pond.