Hoosier Energy Industrial Wastewater Treatment Plant Evaluation

Hoosier Energy Industrial Wastewater Treatment Plant Evaluation

Location: Merom, Indiana

Client: Hoosier Energy REC, Inc.

Completion Date: 2012

Hoosier Energy REC, Inc. retained Burns & McDonnell in 2012 to provide Front-End Planning (FEP) services related to Industrial Wastewater Treatment Plant (IWTP) improvements. The Front-End Engineering Planning report prepared by Burns & McDonnell, dated May 2012, recommended replacement of the existing IWTP with a new treatment plant having parallel treatment trains for process redundancy. Each train will have a capacity of 550 gallons per minute (gpm) for a total treatment capacity of 1100 gpm. Following the front-end planning effort, the improvements will be defined, designed and constructed.

Hoosier Energy operates a coal-fired power plant near Merom, Ind., designated the Merom Generating Station (MGS). The Industrial Wastewater Treatment Plant (IWTP) treats both dry- and wet-weather flows from process areas within the MGS campus. Effluent from the IWTP is discharged through NPDES Outfall 101 to Turtle Creek Reservoir. The reservoir provides non-contact cooling water for MGS.

The IWTP was originally placed in operation in 1981 primarily to treat coal pile runoff and other plant wastewater. Burns & McDonnell prepared a capacity and condition assessment was prepared for the IWTP in 2009. A variety of deficiencies were identified. Infrastructure showed excessive signs of wear and equipment was nearing the end of its useful life. NPDES permit excursions during the past decade have been attributed to the poor condition of the IWTP. To treat the current wastewater quality and quantity and maintain compliance with applicable regulations, improvements to the IWTP were recommended by Hoosier Energy staff and Burns & McDonnell.