The Victor Valley Wastewater Reclamation Authority held a ribbon-cutting ceremony on 26 September to mark the successful start-up of the operation of its new Omnivore^TM biogas production system. The equipment was supplied by Anaergia, Inc., and is funded in part by the California Energy Commission’s Public Interest Energy Research program.

Though Anaergia has provided high solids digestion technologies to meet the needs of customers in Europe, the Victor Valley Wastewater Reclamation Authority retrofit is its first such system in North America.

“Our goal is to demonstrate that we can operate our existing infrastructure more efficiently,” said Logan Olds, general manager of the Victor Valley Wastewater Reclamation Authority. “With recuperative thickening, or even with traditional digesters, the ability to co-digest an additional waste stream can bring added value to the facility — whether it be through minimizing tipping fees or by producing power from the additional methane that is generated as a result of the decomposition.”

The start-up of the Victor Valley Wastewater Reclamation Authority Omnivore project is significant to the California Energy Commission and to Anaergia, because it demonstrates how wastewater treatment plants can increase digester loading and biogas production using existing infrastructure.¹ The innovation includes Anaergia’s high solids mixers and recuperative thickener, which change an ordinary digester into a high-solids Omnivore^TM digester. The Omnivore^TM retrofit enables the authority to triple the digester’s solids content and biogas production rate. The Victor Valley Wastewater Reclamation Authority will convert the additional biogas into electricity to meet part of the wastewater treatment facility’s electrical demand.