Liquid permanganate allows plant to treat unanticipated odorsProblem: After a summer drought, winter rains flushed accumulated solids out of the collections system and into a Massachusetts wastewater treatment plant. In addition, septic sewage was received at a station 2 miles from the plant, and a mechanical failure of a centrifuge cut the plant’s biosolids dewatering capability in half. The treatment plant became a large odor source, mainly at the primary clarifiers and aeration basins.Solution: The plant staff fed CARUSOL liquid permanganate from Carus Corporation at the bar screens, the primary clarifier inlet, the primary effluent outlet, the gravity thickener effluent,
