As domestic sewage and industrial effluent treatment plants, Ovivo’s Rotating Biological Contactors (RBCs) remove soluble, biodegradable, organic materials from domestic and industrial wastewater, achieving a high quality final effluent that is safe for discharge. Driven by low power motors, the RBC technology is one of the most efficient systems for the treatment of wastewater. It is also one of the only designs to overcome fatigue problems associated with RBCs.

Operation and applications

• Package plant
Three separate processes (primary settlement, bio-contactor and final clarification) are combined in a single tank. RBC package plants are generally supplied for small and medium populations. Where populations are large, multiple units can be used in parallel.

• Semi-modular RBCs
For larger effluent volumes, semi-modular construction eliminates certain design and handling constraints, and final settlement is housed separately in a purpose-built conical GRP tank. Primary settlement and biological treatment are still combined in a single tank enclosed by low-profile covers. The primary tank collects and stores screenings, detritus and sludge - reducing capital and operational costs.

• Modular RBCs
In a modular system, generally used for large populations, both primary and final settlement tanks are separated from the biological treatment zone. Using individual tanks for each of the three unit processes provides the greatest flexibility in process design and site layout. The Primary section may be either a sealed septic or a conical upward flow settlement tank. Biological treatment takes place in the self-contained Bio-Contactor which may be installed in either a GRP or concrete tank. Final settlement occurs in an upward flow clarifier.

Key features and benefits

  • 20-year design life with improved RBC system.
  • Low cost 10-year design life also available.
  • Low maintenance costs and robust design.
  • Low energy usage.
  • Inconspicuous and odour-free.

Creating value

  • Economic, environmentally-friendly treatment process.
  • Produces high quality nitrified effluent all year round.
  • Flexible, modular systems.
  • Reducing capital expenditure for new and existing treatment plants.
  • Expert assessment and repair for any RBC (supplied by any manufacturer).

Remediation service

Ovivo also provides an RBC Remediation Service which is a unique procedure for the investigation and repair of any RBC plant (including OEMs).