Description
The $50.6 million project was designed by Strand Associates, the project engineer, and built by Vissering Construction, the general contractor.
The construction work and upgrades of the wastewater treatment plant in Crest Hill included:
- Increasing wastewater treatment capacity from 1.9 million gallons per day (MGD) to 2.2 MGD, and expanding maximum flow capacity from 3 MGD to 5.5 MGD
- New headworks complex with mechanically cleaned fine screening, influent flow metering, influent pumping, and primary clarification
- New aeration tanks & two new final clarifiers; replacement of existing sand filters
- New UV disinfection and post aeration systems
- New Excess Flow Clarifier, liquid chlorine excess flow disinfection, and sodium bisulfite dechlorination
- New blower building housing blowers, chemical phosphorus removal facility, and return activated sludge pumping
- Converting the existing aeration tanks to aerobic digesters
Products Used
“The durability of concrete structures in wastewater treatment plants is all about protecting the imbedded steel reinforcement from corrosion resulting from sulfate and chloride attack, cracking, and the general aggressive corrosive environment of the effluent and treatment chemicals,” adds Patrick O’Brien. “Once PENETRON ADMIX SB is added to the concrete mix, the treated concrete structure is impermeable, even under the constant hydrostatic pressure of a wastewater treatment plant.”
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September 2, 2025
