Earth Tech selected to design biosolids facility
Long Beach, CA— Earth Tech
has been selected to design a new biosolids facility in Nashville,
Tennessee for the Department of Water and Sewage Services of the
Metropolitan Nashville and Davidson County. Earth Tech, a business
unit of Tyco International Ltd, will serve as a subcontractor
to Archer-Western Contractors, Ltd., a division of the Walsh Group,
on the $117 million project.
Earth Tech will provide engineering
services during construction; prepare operations and maintenance
manuals; and provide staff training; and start up and commissioning
A major part of the project is
to design and build the sludge thickening, digestion, dewatering
and heat drying facilities that will convert sewage sludge into
biosolids for reuse as fertilizer.
“Communities like the Nashville
metropolitan area face simultaneous challenges: how to efficiently
dispose of sanitary system byproducts while meeting changing federal
regulations,” said Alan Krusi, Earth Tech president.
The new facility, which will
have a maximum capacity of 137 dry tons of sewage solids per day,
will reduce odors emanated by the Central Wastewater Treatment
Plant by replacing the current practice of land filling raw sludge
with the new biosolids drying process.