Aerobic Digestion

Aerobic sludge digestion is a biological process that takes place in the presence of oxygen. With oxygen, bacteria present in the sludge (activated sludge) consumes organic matter and converts it into carbon dioxide. Ovivo offer several technologies to encourage this natural process to thrive, producing consistent, high quality, results. Processes supplied by Ovivo can use coarse or fine bubble diffusers.
Enviroquip® Airbeam™ Cover
Our unique AirBeam™ cover is a simple, modular design that integrates structural supports and air distribution systems to form a superior digester cover.
Ovivo® ECO-MAT™ Membrane Thickener
Unique in its class, the Ovivo® ECO-MATTM membrane thickener system differentiates from other membrane thickeners currently on the market. The ECO-MATTM incorporates proven flat plate submerged membranes. This 'single source' solution is capable of achieving 4% thickened sludge without chemicals, providing an efficient method of sludge thickening. Controls, instrumentation, blowers and pumps are included with the pre-packaged mechanism.
Ovivo® G-TAD™ Process
Ovivo's patented G-TADTM (Gravity Thickened Aerobic Digestion) process provides for the integrated operation of a gravity sludge thickener with two or more aerobic digesters. By operating these units as a combined system, improved treatment and efficiency is achieved.
Ovivo® M-TAD™ Process
The Ovivo® M-TADTM (Mechanically Thickened Aerobic Digestion) process is a controlled aerobic digestion system specifically designed to handle sludge produced by mechanical thickeners such as gravity belt thickeners or rotary drums. The M-TAD system utilizes two or more aerobic digesters to optimize aeration requirements, helping to keep equipment costs to a minimum.
Ovivo® Mem-TAD™ Process
Ovivo® Mem-TAD™ (Membrane Thickened Aerobic Digestion) process brings aerobic digestion and flat sheet membrane performance together into one integrated system. The system consists of two or more aerobic digesters operating in conjunction with an anoxic basin and membrane thickener (MBT). One aerobic digester forms a recycle loop with the MBT and the anoxic basin that causes digested sludge to be continuously thickened while undergoing nitrification and denitrification.
OVIVO® MS Diffuser
Ovivo® MS non-clogging diffuser equipment is well suited for digesters and sludge holding tanks that typically see a range of materials, and it can handle thicker solids concentrations. The clear roll pattern within the basin is excellent for mixing and aeration. The air metering orifices are located above water level, accessible at all times and do not require any cleaning. This is a guarantee no other diffuser can offer.
Ovivo® Surface Aerators
Ovivo provides a variety of surface aerators. The Excell® aerator provides the latest and most efficient evolution surface aeration technology. Our upper and lower impeller design performs two functions simultaneously. The upper impeller for aeration and propulsion and the lower impeller for propulsion and for maintaining solids in suspension when dewatering a basin.
TransMAX® Air Diffusers
TransMAX® non-clog air diffusers offer excellent mixing and aeration by establishing a clear roll pattern within basins. The equipment is especially suited for digesters and sludge holding tanks, which typically see a range of materials and may handle thicker solids concentrations. The air metering orifices are located above water level, accessible at all times and do not require any cleaning. This is a guarantee no other diffuser can offer.