Want Higher Solids Content in Biosolids Products? Consider This Alternative to Applying the Heat

Technologies like belt presses, screw presses, rotary fan presses and centrifuges dewater biosolids and water treatment sludges effectively. But what if circumstances require material with higher solids content than those devices can provide? For example, what if a landfill suddenly requires material at 40% solids instead of 20%? Or what if the cost of hauling material at 20% solids becomes too high to sustain? One option is to add a thermal dryer to the process, essentially boiling off some of the excess water. Another option, new to the United States, is an electro-osmosis dehydrator, a technology that uses electric fields to pull the