City of St. Marys continues to invest in LysteGro Fertilizer Program


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After 15 years of successful operation, the City of St. Marys is reinvesting in the Lystek THP technology and resource recovery program with supporting equipment upgrades.

Attention: Environment, Agriculture, Municipality, Wastewater, Recycling and Waste Management, Journalists/Editors

CAMBRIDGE, Ontario and ST. MARYS, Ontario, May 19, 2022 (GLOBE NEWSWIRE) — The City of St. Marys is partnering with Lystek International (Lystek) to reinvest in its Lystek THP wastewater resource recovery program with the replacement and upgrade of supporting processing equipment.

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The City of St. Marys first partnered with Lystek in 2006 to demonstrate the potential for integrated plant optimization using Lystek THP technology. The original process module was designed and installed by GHD (formerly Conestoga Rovers and Associates). The Canadian Food Inspection Agency (CFIA) LysteGro (Grade A quality) fertilizer program at the City of St. Marys Wastewater Treatment Plant represents Lystek’s second deployment.

With increasing process demands, the City engaged BM Ross and Associates Limited to assess the site’s aging infrastructure and opportunities to improve operations. Their analysis revealed that the boiler was in need of replacement and that the installation had the power supply to support a larger unit. The City engaged Lystek to evaluate other opportunities to improve operations and modernize the module alongside this equipment upgrade. The City has now contracted Lystek to replace and upgrade the boiler, as well as ancillary equipment. These upgrades will improve the performance of the existing Lystek THP LY3 module under the new operating conditions and allow the City to meet increasing plant process demands with reduced operating hours.

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“The City originally invested in Lystek THP and our LysteGro fertilizer program over 15 years ago. We are pleased to continue our investment in this resource recovery program by partnering with Lystek to upgrade support processing equipment. This will improve our operations and secure our fertilizer program for the long term and we look forward to a continued partnership between the City and Lystek. – Dave Blake, Environmental Services Manager, City of St. Marys

The city has contracted out the operation of the facilities, including the Lystek THP module, to the Ontario Clean Water Agency (OCA). Lystek is responsible for the annual LysteGro fertilizer sales and marketing program. To date, the City has recovered and recycled more than 17,000 m3 LysteGro fertilizer from their municipal biosolids to local farmland and has realized revenue benefits from the sale of this beneficial product.

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Lystek THP was initially implemented to alleviate immediate WWTP storage capacity issues and improve the program with the production of CFIA-regulated Class A LysteGro fertilizer. This program concentrated the residual product, reducing the volume stored and management. The treatment plant extended the capacity of the existing storage tanks from 90 to 300 days at the start of the program. In addition to the benefits associated with producing a CFIA fertilizer product and reducing residual volumes, the technology improved digestion performance when anaerobic digesters were operational on site and provided an alternative carbon source. when needed for the biological nutrient removal system.

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As their anaerobic digesters reached end of life in 2015, Lystek THP technology allowed the city to continue producing a marketable CFIA fertilizer product without the substantial capital investment required to replace this aging infrastructure.

The St. Marys deployment holds a special place in Lystek’s history being our second installation and first demonstration of all three resource recovery applications – including LysteMize, LysteCarb and LysteGro – at a single site. We are proud to have provided the City with stable and sustainable biosolids treatment and management services for all these years. It was exciting to be part of the evolution of the plant and to see the City’s continued commitment to the program. – Ajay Singh, CTO and Co-Founder, Lystek International

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About Lystek

Lystek International is North America’s leading provider of thermal hydrolysis solutions for the sustainable management of biosolids and organics, serving more than 55 public and private customers. Lystek THP® converts dewatered biosolids and non-hazardous organic residues into a multi-purpose, high solids liquid product for full-cycle resource recovery. These products and processes include LysteMize® process for optimizing anaerobic digestion and biogas production; LysteCarb®, an alternative carbon source for BNR systems; and, LysteGro®, a nutrient-rich biosolid fertilizer. LysteGro is a high solids (13-16% total solids) Class A liquid biosolid fertilizer that is easily stored, transported and applied using conventional liquid handling equipment and is regulated as fertilizer product in Canada and the State of California. Lystek offers turnkey solutions, including technology supply, design-build and installation services, regional processing solutions, and comprehensive LysteGro product management.

For more information, please contact: Mike Beswick, Executive Vice President of Lystek at:

Cell: 226-791-1382 | Office: 226.444.0186 | or by email at:



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