The Tri-Oval^® Oxidation Ditch System, named for our Aire-O₂ Triton^® in an oxidation oval, provides superior wastewater treatment process control and design flexibility of the activated sludge process. We specialize in oxidation ditch retrofits,  providing you with the cost savings benefits of little construction, easy installation, low maintenance, and reliable wastewater treatment. The system’s dual-function Aire-O₂ Triton aerators/mixers drive fine bubble aeration and mixing up to 33ft deep (10m) and allow for full Biological Nutrient Removal (BNR). The energy efficient Triton can also operate in as shallow as 4ft (1.2m). Rentals are available to keep your plant compliant in emergency situations or with fluctuating loads throughout the year. View our Rental Fleet page to learn more.

Ideal for Municipal or Industrial Applications

The Tri-Oval^® Oxidation Ditch System is a subsurface complete mix, looped reactor system that is ideal for municipal and industrial wastewater treatment facilities. Typical processes incorporated into the Tri-Oval^® Oxidation Ditch System design can include conventional activated sludge, advanced secondary sludge treatment, nitrification/denitrification, biological nutrient removal of nitrogen and phosphorus, and aerobic sludge digestion.

Why choose the Tri-Oval^® Oxidation Ditch System?

• Simple, flexible operation with easy process control
• Reduced power consumption with low cost of ownership
• Minimal heat loss offers improved winter performance
• Total reliability, quiet operation, and flexible design for restricted land requirements
• Aire-O₂ Triton^® Rentals available!

Featuring

• Full biological nutrient removal (BOD, TSS, Nitrogen, Phosphorous) and aerobic sludge digestion
• No aerosols or splashing
• Complete mixing throughout the water column, eliminating solids deposition
• Additional equipment can be provided to create a system package including: controls, instrumentation, secondary clarifiers, RAS/WAS pumps, and/or aerobic digester