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Room: Sapphire

A Case Study for Treating Lagoon Sludge and Increasing Life of Existing Infrastructure

This paper examines the effectiveness of a bioaugmentation process adding cultured specialized bacteria into the sewer collection system at a 4 MGD activated sludge plant with lagoons in Fort Dodge, IA. In November 2011, the City of Fort Dodge expected to continue a three-year plan to dredge the sludge lagoons at the WWTP in order to maintain the lagoon life. Each year the City allocates $200,000 to dredge the lagoons, which was expected to cost over $700,000. Using an external source of Bacillus bacteria, a full-scale activated sludge wastewater treatment plant selected an emerging technology to reduce lagoon sludge levels and delay the lagoon's scheduled 2011 dredging event. After 3 months of the technology in-place, the results show the sludge levels in lagoon 1 and lagoon 4 decreased by 26% and 16% respectively.

Moderator:  Mike Lutz


Bart Darfler - In-Pipe Technology Company, Inc.

Central Region Manager
Relevant Work Experience
Work experience includes:
• 3 years in the wastewater industry
• 30 years in Sales, Marketing, and Business Development experience
• Board Member for community development including Naperville, IL Riverwalk Commission & Millennium Carillon Foundation
• Affiliated with 8 different environmental agencies including WEF, IL-WEA, Fox Valley Operations Ass.