Wastewater & Leachate


WastewaterEco-Solids International modular biological treatment plants use a hybrid aerobic process combining a fixed film and activated sludge process in separate, but interconnected treatment cells.

The hybrid, multi-cellular biological process forms the basis of an advanced COD (Chemical Oxygen Demand) and BOD (Biological Oxygen Demand) removal process, with optional pre- and post-treatment if required to meet stringent discharge consents.

The multi-cell design is ideally suited to the treatment of wastewaters where flow and local characteristics vary widely. The process has been established for landfill leachate treatment, where flow and load vary from day to day, and over the life of the landfill. By having multiple cells, aeration and/or flow through specific cells can be turned on and off independently to save operational costs, as typically energy for aeration can be between 30% and 40% of operational costs in conventional biological wastewater treatment plants.

  • Operational Performance

    The process can also be optimised for removal of ammonia (NH3-N) via bacterial nitrification, or of total nitrogen, via an anoxic stage.