Anaerobic digestion is highly dependent upon effective sludge mixing. When tank contents are inadequately mixed, stratification occurs and the volume is not properly utilized. The Ovivo Eimix mechanical sludge mixer is designed to provide powerful mixing without accumulating stringy or fibrous material. In addition, the use of reversing motors enables the mixer to pump sludge with equivalent capacity in both directions, which maximizes system flexibility by altering mixing dynamics.