DVO has introduced a solution that removes 75 to 95 percent of phosphorus from anaerobically-digested wastes. The company says they have successfully commissioned this system at a full-scale for a large dairy farm, a commercial mixed-waste anaerobic digestion facility and a dedicated poultry litter digester.
By treating farm and commercial/industrial biowastes in DVO’s patented two-stage mixed plug flow anaerobic digester and then employing a new phosphorus recovery (PR) system, the company says phosphorous can be both conserved and recycled, and it helps protect natural waterways.
According to DVO, it is, in-part, the “guaranteed retention time” offered by their anaerobic digester that allows this PR process to be uniquely economical and effective.
Recovered phosphorus is outputted as a new and useful byproduct that is stackable, storable, spreadable and profitable. The phosphorus-rich solids generated by DVO’s phosphorus recovery solution are stackable, storable, and spreadable and can be easily transported. End markets include use as a soil amendment, fertilizer or potting soil/peat moss replacement, and DVO says operating costs average one-eighth of a penny per gallon of liquid processed.
