Dewatering Technologies: Two Workhorse Technologies Continue Race For Dewatering Crown.

The article describes two dewatering technologies competing in the U.S. municipal wastewater market. The U.S. Environmental Protection Agency (EPA) describes the belt filter presses as a dewatering technology that applies pressure to the biosolids to squeeze out the water. The EPA describes centrifuge dewatering as a technology that employs a continuous-feed process wherein polymer-conditioned biosolids are introduced into a bowl, thereby causing the solids to accumulate on the bowl's interior. The advantages of centrifuges over belt filter presses include smaller footprint, drier cake production and minimal odor generation. Centrifuges also need less operator attention, maintenance and cleaning requirements. However, belt presses have lower capital costs and energy requirements. INSET: Which Dewatering Technology Do You Need?….