J-Vap Dewatering/Drying System Achieving Class A Biosolids

A shortfall in treatment capacity left the northeast Tennessee community of Mountain City under a state-imposed sewer-connection moratorium that hindered efforts to attract new housing, tourism and industry.  Class B Biosolids produced on drying beds restricted options for beneficial use. Limited drying capacity on the drying beds influenced activated sludge waste rates, making process control a challenge.  With Class-B material, they faced a shortage of available land within cost-effective hauling distance.  Runoff was a concern as well on many farms in this area, where slopes exceeded the limits set in federal and state regulations.

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