Biosolids Processing

Lystek offers advanced biosolids processing solutions for municipal wastewater treatment plants and similar, organic waste materials from the industrial, commercial and agricultural sectors.

LysteGro is a pathogen-free, nutrient-rich fertilizer that exceeds the definition for United States Environmental Protection Agency (US EPA) Class A material. Lystek biofertilizer has also been registered at the federal level by the Canadian Food Inspection Agency (CFIA).


The core Lystek technology is an innovative, energy-efficient and cost-effective process involving a combination of heat, alkali, and high shear mixing to produce a high-solid, pathogen-free, nutrient-rich, liquid biofertilizer product. One of the key benefits of the Lystek process is a breakthrough discovery that creates a safe, stable, low viscosity biofertilizer with a solid concentration in the range of 14 – 17%. The processed product can be transported and applied using conventional handling equipment.

The Lystek process can effectively treat thickened or dewatered raw or digested biosolids as well as other, non-hazardous organic “waste” materials. The closed loop system not only reduces odors but modifies them to have a more “earthy” aroma. Reduced, less offensive odors help to enhance public acceptance.

Recycling of the LysteGro also improves anaerobic digester performance and significantly enhances methane production for further utilization as biofuel for green energy. An integrated system approach, we call it LysteMize, in combination with biological nutrient removal system (BNR) and anaerobic digestion can result in net volume reduction by as much as 40%, while also improving denitrification and phosphorous removal processes at wastewater treatment plants.