Carrousel® Oxidation Ditch
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Product Group Expert
Sergio Pino-Jelcic
is your Carrousel® Oxidation Ditch expert
You can contact them directly using the box
below or call them at 801-931-3012 -
Parts & Services
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Product Group Brochure










EliminatIR™ Gate
Excell® Aerator
The Oculus™ System
- Total nitrogen (TN) and total phosphorus (TP) reduction to 3 mg/L and 0.3 mg/L, respectively
The Carrousel® system has offered a reliable way to treat wastewater since the late 1970s. With over 700 installations, many innovations have been introduced since that time
Six different flow sheets, including Bardenpho® systems, are currently available. Our most common system is the A2C™ system with free internal recycle for biochemical oxygen demand (BOD), total nitrogen (TN), and total phosphorus (TP) reduction to the lowest permit limits in the United States. Also available is the new AlternatIR™ system which reduces BOD, TN, and TP in a two-stage system, with no internal recycle pumping required. Many unique designs have also been delivered, including wrap-around clarifier construction and concentric ring plant or brush plant retrofits.
Key components of a Carrousel system are the high efficiency Excell® aerator, the nutrient-destroying EliminatIR™ gate , and the operator-friendly Oculus™ control system.
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Excell® Aerator
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Oculus™ System
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EliminatIR™ Gate
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The Excell aerator with the high efficiency surface impeller and the floor-scouring lower turbine efficiently provides aeration at full speed and at 80-90% turndown (drawing 10-20% nameplate power), while still maintaining sufficient mixing in the basin. The Excell aerator offers the best energy savings and dissolved oxygen control on the market.
The EliminatIR gate controls internal recycle from the aerobic zone to the anoxic zone while never drawing more than ½ a horsepower, saving significantly on power and maintenance compared to pumped systems. The EliminatIR gate comprises an electrically-actuated gate that regulates flow through the internal recycle channel.
With greater reliability of instrumentation today, the Oculus control system may be used to enhance operations to save energy and reduce nutrients. In its simplest form, the Oculus control system controls aeration with a DO probe and controls nitrate with an ORP or nitrate probe. Additional analyzers available are ammonia, mixed liquor suspended solids, pH, and phosphorus, which can be incorporated into the Excell aerator and EliminatIR gate control algorithms within the Oculus control system.
For the anoxic and anaerobic zones, both platform mounted mixers and submersible mixers are available.
Adding membrane digestion or the ProSet™ clarifier is a great way to minimize nutrient release from the sludge handling process.
With so many Carrousel systems out there, retrofits are a cinch to bring these older installations up to newer technology. Contact the Salt Lake City Ovivo® office or your local representative to find out more.
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