TumbleOx™

The TumbleOx Bioreactor utilizes media stored in a rotating mesh drum which is partially submerged in the wastewater. The drum rotates, creating energy to mix the tank and ensuring thorough contact of the ammonia with the bacteria attached to the media. The media is shaped to create a bailing effect which cups and lifts the wastewater above the surface as the drum rotates. The wastewater is dumped from the media above the water surface, allowing oxygen to be dissolved into the wastewater as it falls back to the water surface. This continual movement of the media in and out of submergence creates a high level of dissolved oxygen in the tank which is necessary to remove BOD and convert ammonia to nitrate. Dissolved oxygen levels are typically maintained above 3.0 mg/L without the use of blowers or aeration systems. The small horsepower drive unit on each drum allows aeration and mixing to be achieved very efficiently with minimal power costs.

The constant movement and contact of the media pieces within the drum prevent excessive buildup of biomass on the media.  A thin, healthy layer of bacteria is maintained on the media surface for optimum process performance.

• Utilizes a non-activated sludge, fixed film attached growth process to achieve biological treatment.
• TumbleOx media is uniquely designed to provide a large surface area for bacterial growth. Low effluent BOD and ammonia values are achieved in a small volume. 
• Tumbling action of the media dissolves high levels of oxygen into the wastewater without using blowers and aeration grids. Dissolved oxygen levels are typically >3.0 mg/L.
• Attached growth media is housed within a rotating mesh drum to prevent washout.  Drum rotational speed is field adjustable to optimize performance.
• Lower sludge yield versus activated sludge processes utilizing suspended growth.
• Multiple drum configuration available to meet project requirements.

• Effluent polishing
• Industrial pre-treatment
• Small industrial and municipal biological treatment
• Enhanced nitrification of lagoon effluent
• BOD and ammonia removal in sludge dewatering return flows 

TumbleOx Bioreactors can be purchased individually for installation within site built tanks, or as three (3) drum pre-packaged units with tank. The pre-packaged units are completely factory assembled so site installation consists only of connecting inlet and outlet piping, and terminating field electrical wiring at one common control box.  Tank covers and splash guards are available add-ons.