Above ground 46 ft. Circular Clarifier on legs to separate coal fines, grit, sand, tar and coagulated materials from wastewater generated from operations at a steel plant.

Circular Clarifiers and Thickeners

New, rebuild, and retrofit designs for nearly all clarifier and thickener applications

New, rebuild, and retrofit designs for nearly all clarifier and thickener applications

Application or technical questions?

Monroe Circular Clarifiers use widely accepted settling technology based on the density difference between water and suspended solids. Monroe Circular Clarifiers and Thickeners are designed to give you the performance you require with long-term reliability. Monroe Environmental realizes that all waste streams are not alike and in many cases standard designs must be modified. Tank sizing, influent and effluent arrangements, flocculation requirements, sludge removal, and skimming methods and mechanisms are some of the considerations necessary for a successful installation.

Circular Clarifier and Thickener Expertise

3D rendering of the internals of a Circular Clarifier standard scraper design
Monroe Environmental builds Primary and Secondary Circular Clarifiers for industrial and municipal wastewater treatment, as well as Flocculating Clarifiers and Solids Contact Clarifiers for clean water or potable water applications. Our experienced staff will provide high efficiency, low maintenance systems that will provide the highest return on investment.

The Monroe Circular Clarifiers and Thickeners are available in self-supporting prefabricated steel units or they can be designed for installation in a concrete tank. Existing structures and systems can sometimes be utilized and upgraded for cost savings.

Circular Clarifiers normally utilize a center feed inlet well or a peripheral inlet. The center feed well design can be equipped with a chemical addition system with mixing and flocculation. With the center feed well, the effluent is discharged along the outer wall of the clarifier tank. Clarifiers with peripheral inlets will be designed with a center bottom liquid outlet.

Circular Clarifiers Engineered to Meet Your Needs

  • Customized designs for municipal and industrial applications
  • Tank diameter 10 to 250 feet
  • Full and half-bridge designs
  • Steel or concrete tanks
  • Chemical feed system available
  • Flocculator available when required
  • Energy Dissipating Inlet (EDI) designs available
    • MEDIC
    • LA-EDI
    • Alternate designs
  • Thickener mechanism available
  • Sludge removal configurations
    • Scraper
    • Spiral scraper
    • Suction header
    • Riser pipe
  • Skimmer mechanisms
  • Corrosion resistant materials and coatings
    • Epoxy coated steel
    • Stainless steel
    • Galvanization
  • Custom built replacement parts for all manufacturers
  • Clarifier rebuilds

Primary, Secondary (Final), Clean Water Treatment, & Thickeners

Sludge Removal Designs

Recent Projects


Clarifier Rebuild with X-Flo Bypass: 100% Uptime

A truck assembly plant needed to rebuild their 40 ft. clarifier, and downtime was not an option. The complete, turnkey solution included a circular clarifier rebuild and rental of an X-Flo Mobile Clarifier™ to bypass the existing clarifier.

Water & Wastewater Applications

Resources & Literature

Newsletter Subscription

Stay informed about air pollution control and water/wastewater treatment applications and solutions from Monroe Environmental. Subscribe to our newsletter.

Quality Standards