RTW Engineering - City of Louisville Project Highlight

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City of Louisville Wastewater Treatment Plant Evaluation & Expansion

RTW performed predesign of the aerobic digester, aeration system, and blowers and evaluated replacement of the existing RAS pumps with new larger pumps. The project involved design of a fine-bubble air-diffuser system, rebuild of the existing blowers, and removal of two blowers to replace with a new one.

RTW completed a CPE and prepared a site application for expansion of this facility to 4.2 mgd. We performed design and construction management for the project, which involved the following improvements:

Adding two new 80'-diameter clarifiers

Converting an existing clarifier to an aeration basin with fine-bubble diffusers

Adding a new RAS/WAS pump station

Thickening WAS in a new RAS/WAS building with a drum thickener

Converting the existing digester/thickener to all digester with fine-bubble diffusers

Adding a third blower

Retrofitting the existing contact basin with a UV disinfection system (keeping the chlorination system for reuse water)

Adding an emergency generator

Adding a 1,000-sf office and administration building.