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Description: Two Years Operating World's Largest Capacity Facility of Latest Generation...
Two Years Operating World's Largest Capacity Facility of Latest Generation Wet-weather Disk Filters
Abstract
The recently expanded and upgraded Tomahawk Creek WWTF continues JCW’s success eliminating wet-weather overflows and complying with new nutrient limits. After comprehensive evaluations of source control, equalization, conveyance, and treatment alternatives, JCW implemented an auxiliary treatment strategy with dual-purpose filters as the most resilient, sustainable, and cost-effective alternative. This strategy initially saved JCW $200M in construction costs compared to storage and equalization alternatives. Design collaboration with a construction manager at risk (CMAR) saved another $40M in construction costs through value engineering studies at the 60% design stage that optimized site usage and technologies for auxiliary treatment and biological nutrient removal. The renewed WWTF started operating dualpurpose pile cloth disk filters in 2021 for tertiary treatment of flows up to 216 ML/d (57 mgd) and auxiliary treatment of wet-weather flows up to 435 ML/d (115 mgd) for a total peak flow capacity of 651 ML/d (172 mgd).
Renewal of the Tomahawk Creek Wastewater Treatment Facility is a major milestone in Johnson County Wastewater's Integrated Plan to identify, assess, and prioritize infrastructure initiatives and investments. Among its innovations, the updated facility uses an auxiliary treatment strategy with dual-purpose pile cloth disk filters that polishes effluent and cost-effectively treats peak wet-weather flows up to 651 ML/d (172 mgd) for year-round benefits to local streamways.
SpeakerFitzpatrick, James
Presentation time
16:00:00
16:30:00
Session time
15:30:00
17:00:00
SessionThinking Outside the Basin: Auxiliary Wet Weather Treatment
Session locationRoom S504a - Level 5
TopicIntermediate Level, Municipal Wastewater Treatment Design, Wet Weather
TopicIntermediate Level, Municipal Wastewater Treatment Design, Wet Weather
Author(s)
Fitzpatrick, Jim
Author(s)J. Fitzpatrick 1; A. Szerwinski 2 ; J. Dyson 3; G. Miller 4; A. Ruther 5; N. White 6; A. Szerwinski 2; J. Fitzpatrick 1;
Author affiliation(s)Black & Veatch 1; Johnson County Wastewater 2 ; Aqua-Aerobics 3; Black & Veatch 4; Black & Veatch 5; Black & Veatch 6; Johnson County Wastewater 2; Black & Veatch 1;
SourceProceedings of the Water Environment Federation
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Oct 2023
DOI10.2175/193864718825159050
Volume / Issue
Content sourceWEFTEC
Copyright2023
Word count14

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