Biosolids are a nutrient-rich product of the wastewater treatment process at KUB's Kuwahee plant. The plant separates solid materials from liquid waste and sends the solids to the digesters, which add heat, pressure, and helpful bacteria to reduce or eliminate pathogens and minimize odor.

After treatment and dewatering, the biosolids can be applied to soil like fertilizer, recycling essential nutrients. In fact, KUB’s biosolids are registered as a fertilizer with the Tennessee Department of Agriculture.

KUB has beneficially reused its biosolids for over 20 years. All of the product is applied to farms in Knox and surrounding counties as a soil amendment.