Flows from 1 to 450 LPS (per train), loads up to 100,000 mg/l COD The Multi-Media BioReactors (MMBRs) were the logical successions of CBBRs when larger volumes or higher load influents needed to be treated. They are the latest generation process units for the biological treatment of water. They are characterized for packing large quantities of granular, diffuse, and fixed biomass under a controlled pH and temperature environment and in state-of-the-art fluidized reactors of very particular designs and properties.

To achieve this, extensive rheology and Computational Fluid Dynamics (CFD) simulations were required, along with physical testing of scale and full-size models. As a result, we came up with what we believe is the most compact and energy-efficient biological process to treat wastewater to a high-quality effluent in the world[1]. So efficient that, with enough organic load present, the rectors generate more energy in the anaerobic stages in the form of usable biogas that, when converted to electrical power, is more than what is used in the anoxic, aerobic, and even disinfection stages of the process.

Flows from 2 to 400 m3/day, loads up to 1,500 mg/l COD The Combined Baffled BioReactor (CBBR) was developed building on the strengths of the Combined BioReactor and designed to overcome some of its limitations. It is a full composite, portable, compact biological unit that typically incorporates 7 to 10 stages of any combination of anaerobic, anoxic, and aerobic processes according to the treatment needs. After the biological stages, tube settler clarifiers and UV disinfection are typically integrated. The synergy achieved in this unit capitalizes on the advantages that each has to offer and can process a wide range of influents to a high-level standard with a minimal footprint and energy consumption.

The Combined BioReactor (CBR) is an advanced deep digester that serves as a primary sedimentation tank with integrated anaerobic, pre-anoxic, and aerobic processes for both sludge and water in a single, carefully stratified receptacle.

CBRs were always paired with Rotating Biological Contactors (RBCs), of which we designed and manufactured the largest in the world. CBR+RBCs combined in what for a long time was the most energy-efficient mechanical process for a high-quality effluent we found in the world (not considering biogas utilization).However, they required a larger initial investment than conventional systems and were susceptible to mechanical problems when they weren’t appropriately operated. For these reasons, and mostly because of our newly developed CBBR and MMBR technologies, almost all new projects have been resolved with the latter.