Monroe Circular Clarifiers use widely accepted settling technology based on the density difference between water and suspended solids. The Monroe Clarifier is 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 & Thickener Expertise
The Monroe Clarifiers 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
- Alternate designs
- Thickener mechanism available
- Sludge removal configurations
- Spiral scraper
- Suction header
- Riser pipe
- Skimmer mechanisms
- Corrosion resistant materials and coatings
- Epoxy coated steel
- Stainless steel
- Custom built replacement parts for all manufacturers
- Clarifier rebuilds
Primary, Secondary (Final), Clean Water Treatment, & Thickeners
Primary Wastewater Treatment Circular Clarifiers
Secondary (Final) Wastewater Treatment Circular Clarifiers
Monroe Environmental’s Secondary Circular Clarifiers for wastewater are designed to provide a high quality effluent suitable for discharge to the environment or further treatment.
The Monroe Environmental Secondary Clarifier (often called ‘final clarifier’) effectively separates the biological floc and colloidal solids to produce wastewater with very low levels of organic material and suspended matter.
Solids Contact and Clean Water Treatment Circular Clarifiers
Sludge Removal Designs
ScraperPrimary Circular Clarifiers are designed to receive raw wastewater after it has been pre-screened to remove large objects and grit. This primary sedimentation tank will produce a homogeneous liquid capable of being treated biologically and a sludge that can be separately treated or processed.
Spiral Scraper type clarifiers utilize long-sweeping, curved scraper blades to move solids across a basin floor. They are similar to scraper-type clarifiers in that they drag settled solids to the collection area, however, they can more quickly remove these solids and thus maintain lower sludge blankets in some applications. This design can be utilized in primary, secondary, and industrial wastewater applications.
Riser Pipesecondary, biological, or flocculated solids which are more fluidized and have lower densities than primary wastewater and heavy industrial sludge.
Suction Headersecondary, biological, or flocculated solids which are more fluidized and have lower densities than primary wastewater and heavy industrial sludge.
Water & Wastewater Applications
Resources & Literature
Water | Circular Clarifier for Steel Mill Upgrade
Monroe Environmental saves steel mill $145,000 on clarifier rebuild/retrofit for blast furnace wastewater and meets stringent performance requirements.
Water | Detroit Wastewater Treatment Plant
Monroe Clarifier rebuilds replace internal components and convert sludge rakes to higher efficiency spiral scrapers at City of Detroit WWTP.
Water | Rebuild of Two 130' Secondary Clarifiers
Monroe's Clarifier rebuild maximized clarifier uptime with rapid installation and allowed the plant to return to normal operating procedures after 3 days.