Associated Construction Publications/Construction Digest – In southwestern Indiana, Bowen Engineering Corp. is proceeding with numerous upgrades to the Evansville Westside Wastewater Treatment Plant. Bowen Senior Project Engineer Homer Fruit says the $16-million project “will increase the capacity of the treatment plant from 20 million gallons a day to 40 million gallons a day.”

The plant upgrades, designed by Bernardin, Lochmueller & Associates Inc. (BLA) and Clark Dietz Inc., include the addition of the first biofiltration process in Indiana. According to BLA, the biofiltration process consists of a submerged floating media, like polystyrene beads, where bacteria grows. Wastewater and air are introduced through the bottom of the media-filled tanks. As the wastewater flows up through the media, the bacteria breaks down the organic matter in the wastewater. [read more…]