With more than 250 tubs sold worldwide, the Earth Tub is the most popular in-vessel, commercial composting system of its size. The fully enclosed composting vessel features power mixing, compost aeration and biofiltration of all process air. This self-contained unit is ideal for composting at schools, universities, restaurants, hospitals and supermarkets. Each Earth Tub can individually compost up to 100 pounds per day (total biodegradables). Two Earth Tubs can jointly compost up to 200 pounds per day. Three Earth Tubs can jointly compost up to 300 pounds per day.
Organic materials such as food scraps, manure or yard waste are loaded through the large hatchway in the cover. These wet organic materials are then covered with dry materials such as wood chips, shavings, leaves or small weeds to prevent odors and insure that porosity and moisture levels are ideal for composting.
Turn on the auger motor and rotate the cover to shred and mix the new organic material into the active compost. Two revolutions of the rotating cover are required to mix the outside and center of the Earth Tub. The auger will shred and mix a ton or more of compost in 10-15 minutes. During active composting, the Earth Tub should be mixed at least two times per week.
Maintaining aerobic conditions and controlling temperatures are essential for fast, effective composting and odor control. The aeration system draws air through the compost and forces the exhaust air through our biofiltration air purification system to remove odors. The overall cleanliness of the in-vessel design allows the Earth Tub to be placed in commercial settings close to where waste is generated.
Heat generated in the Earth Tub rapidly breaks down the food scraps. The volume reduction is typically 50% or higher. After 2-3 weeks of active composting, open the discharge door and remove the compost product. The compost can be cured for 20-40 days for further stabilization.
The Earth Tub is able to process up to 100 pounds/day.
The newest Earth Tub model, Version 9.0, incorporates many great new benefits and features.
* We recommend installing Earth Tub(s) in a shaded or covered location to prevent long-term exposure to solar radiation and provide dry and safe operating conditions in rain and snow.
One Earth Tub Package provides all equipment required for a site to process up to 100 pounds of organic waste per day. For individual component pricing choose the custom package option.
One 36′ hand-held temperature probe
One Bio-filter which includes an aeration blower and odor filter