The Oculus™ System

Through the use of PLCs, HMIs, instrumentation, and programming based on our 30-year old installed base, the Oculus™ system reduces effluent ammonia, nitrate, total nitrogen, total phosphorus nutrients and energy usage in Carrousel® systems to the limits of technology. Effluent TN of <3 mg/L and effluent TP<0.3 mg/L without chemical addition is common.

Ovivo® developed the Oculus system predecessor, the ACE (Automated Control of Energy) system, as a simple way to control Excell® aerator speed to maintain an operator-desired dissolved oxygen set-point. Essentially, the aerator sped up when dissolved oxygen was too low, and slowed down when dissolved oxygen was too high. The newer Oculus System includes all the ACE System controls, but also allows for nutrient analyzer feedback to optimize ammonia and nitrate removal while minimizing energy input. Several different algorithms are available to the operator to vary aerator response, perfect for the operator who enjoys “tweeking” the process for optimum results. All options available to the operator are simple to control via a touch-screen interface.


The Oculus system also controls the EliminatIR® gate position based on ORP or nitrate probes installed in the anoxic zones. The Oculus System also controls effluent weirs, anoxic and anaerobic mixers, wall pumps—all equipment installed within the Carrousel® footprint.


The Oculus system is built with industry-standard programmable logic controllers (PLCs), Human Machine Interfaces (HMIs) and instrumentation (DO probes, etc). Trending screens are always included, which is useful for troubleshooting. Remote access and control from tablets and smartphones is also available, which puts the industry-leading Ovivo process support team at your fingertips.

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Carrousel® is a trademark of Royal Hasking DHV, B.V., the Netherlands.