By: Todd Williams, CH2M global wastewater service team deputy leader

Todd Williams will be attending and presenting his paper, “Thermal Hydrolysis Offerings and Performance,” co-authored by CH2M’s Peter Burrowes, Dru Whitlock and Dave Parry, on Monday, June 27, at 10:00, during SludgeTech 2016, being held June 27-29, at the University of Surrey, Guildford.

SludgeTech 2016, being held at the University of Surrey, Guildford (approximately 30 minutes from London) is happening this week. This three day event, supported by CIWEM, aims to bridge the gap between academia and industry, specifically bringing together leading global experts to share knowledge and insight into the challenges and opportunities surrounding managing sewage sludge. Showcasing the latest research and innovation taking place across the world, we hope to help inspire the next generation of water and wastewater professionals to seek a career in sludge and wastewater treatment.

The wastewater industry has entered an exciting time, as new technologies are making it economically feasible to exploit resources, such as sewage sludge, which has traditionally been considered a problematic waste. Today, with the advancements being made, sewage sludge is seen as a resource which can be recovered and used for its high energy and nutrient content. A specific example of technology changing the way resources are recovered to help with managing biosolids is thermal hydrolysis technology.

On Monday, join me to learn more about the growing interest in the use of thermal hydrolysis technology, in conjunction with mesophilic anaerobic digestion (AD) to manage biosolids in the North America marketplace. This trend is being driven by the desire to obtain Class A exceptional quality biosolids and to improve the dewaterability of the biosolids to reduce the amount of solids that subsequently must be managed.

Because of this interest, a number of thermal hydrolysis vendors are entering the marketplace. Cambi has developed the majority of operating facilities worldwide. In North America, Cambi has one operating facility in Washington, DC (DC Water). Other vendors are aggressively working to enter the thermal hydrolysis marketplace including Veolia with their Kruger BioTHELYS® and Exelys™ offerings, Sustec/Turbotec and Haarslev. Nuances between traditional processing of the entire solids stream through these thermal hydrolysis processes (THP) and development of alternative processing of only a portion of the solids stream, processing after digestion, and even intermediate processing between stages of digestion are being developed. Many claims are being made in vendor literature related to these technology offerings and only recently has information about performance been available. In my presentation, I look forward to sharing an unbiased review of the various thermal hydrolysis systems currently available in the marketplace to provide comparisons of actual performance of several full scale operating systems.

Not attending SludgeTech 2016? You can still follow and join the conversation using the official conference hashtag #SludgeTech2016.

Todd Williams is an expert in residuals and biosolids management. Todd has made numerous presentations and is a contributing author for several articles and books significant to biosolids and residuals management, composting, and odor control including the recently published WEF/WERF/EPA Solids Process Design and Management Manual. He graduated from Virginia Tech and is the past Chair of the Water Environment Federation’s Residuals and Biosolids Committee. Todd works out of CH2M’s Richmond, Virginia office.