Integrated Approach to Secondary Clarifier Improvements Based on CFD Modeling and Proven Best Practices

Downriver Wastewater Treatment Facility
Wayne, Michigan

The need for physical, mechanical and process upgrade of six 165-foot diameter peripheral feed
secondary clarifiers at the Wayne County, Michigan Downriver Wastewater Treatment Facility (WWTF)
was identified as part of a capital improvement program. Improved efficiency was also needed to provide
reliable operation for entire range of design conditions. An evaluation of the existing final clarifier
process was performed to develop the recommended plan for improvements based on site specific testing,
mathematical modeling and consideration of proven best practices. The proposed improvements were
recommended based on the modeling with consideration of proven practices and included a new orifice based
influent peripheral feed channel, new effluent channel and weirs, and manifold type hydraulic
suction mechanisms. Performance testing after installation confirmed the process design parameters were
achieved by the upgraded secondary clarifiers.

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Posted: May 20th, 2011 | Filed under: 100K-500K, 500K-1M, Waste Water Treatment, Water Treatment | Tags: Best Practices, Capitol Improvement Planning, CFD Modeling, Improved Reliability, Plant Optimization, Secondary Clarifier Improvements | No Comments »

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