We recommend replacing brush rotors with OX™ disc aerators, which reduce total lifecycle costs by more than 50 percent. Because non-metallic OX disc aerators do not deteriorate or corrode like carbon steel brush rotors, the expected life of the system is at least 20 years. In contrast, brush rotors typically last an average of only five to 10 years.
Additionally, OX disc aerators:
- Deliver additional aeration capacity to handle increased influent loading
- Eliminate dead zones
- Eliminate splashing that clogs mechnical components
- Keep equipment cleaner to lengthen service life
- Provide biological nutrient removal with existing tanks in series operation
- Reduce energy costs by up to 40 percent in series operation
- Offer stormflow management capabilities in series operation
- Eliminate risk of flooding bearings during high-flow events
At Evoqua, we have more than 40 years of expertise in both brush rotors and disc aerators. Evoqua is the OEM for Passavant Mammoth brush rotors. We also pioneered the disc aerator in the 1970s. So, we can replace your existing brush rotors or upgrade your ditches with OX disc aerators.
To learn more about OX disc aerators, visit:
- Case studies:
- Tomball, Tx., WWTP – Replaced fine bubble air diffusers and reduced energy consumption by 40 percent while producing excellent effluent quality (total phosphorus 0.07 mg/L with chemical addition and total nitrogen 1.95 mg/L)
- St. Charles, Mo., WWTP – Achieved more than 90 percent total nitrogen removal and more than 75 percent total phosphorus removal without tertiary filtration or added chemicals
