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MABA Bi-Monthly Webinar
Tuesday, March 16, 2021, 12:00 PM - 1:30 PM EDT
Category: Webinar


Join MABA for their March webinar, How to Enhance your Digestion on Tuesday, March 16th from 12:00 pm - 1:30 pm. 

Cost:  $10 Member | $15 Non-member

Download the webinar flyer

ModeratorHoward Matteson, CDM Smith

Too Small for Resource Recovery? DTMA Striving for Energy Neutrality at a Small-Scale
William G. Rehkop III, P.E., Executive Director, DTMA

Bill Rehkop is the Executive Director at the Derry Township Municipal Authority where he is responsible for the oversight of all the Authority's business and technical operations. Bill also manages all Authority design and construction projects, trucked-in-waste program, industrial pretreatment program, and regulatory compliance. Bill is a graduate of Penn State University with a bachelor’s degree in Environmental Engineering and has over 10 years of experience in wastewater infrastructure management, planning, design, and construction projects. Bill is a professional engineer licensed in the Commonwealth of PA.

The Derry Township Municipal Authority (DTMA) Clearwater WWTP, located in Hershey, PA, treats an average flow of 5 MGD of municipal wastewater within their service area. DTMA is embarking on a $14 million project to expand its capacity for energy recovery & beneficial reuse, which is the first phase of a larger plan to realize a vision of achieving and exceeding onsite energy neutrality through expanded HSOW co-digestion. The project scope includes upgrading biogas storage, conditioning, and conveyance capacity, and constructing a new CHP building that houses two 1,000-kW CHP systems. Future projects include expanding AD capacity, hauled-in waste receiving station, dewatering, thermal drying to Class A Biosolids production, and side stream treatment.

Medina, Ohio - 2 Years of Operating THP
Dawn Taylor, Superintendent, Kenneth W. Hotz Water Reclamation Facility

Dawn Taylor is currently the Superintendent at the Kenneth W. Hotz Water Reclamation Facility and hold a Class IV Wastewater Treatment Certification and Class IV Laboratory Analyst Certification. She started with Medina County in 2000 as a laboratory technician and became Laboratory Supervisor in 2012 and was Assistant Superintendent for four years. Dawn has a bachelors degree from Miami University with a major in Mathematics and Statistics.

The Medina plant improves its solids treatment system utilizing the Cambi thermal hydrolysis process as pretreatment applied before anaerobic digestion. The THP unit was delivered to the project site fully assembled, which minimized time and work for installation and start-up on site. Thermal hydrolysis increases the biodegradability of residuals in wastewater, which leads to higher digester loading rates. THP also enhances biogas production, which will fuel an existing CHP system. The CHP system produces electricity to operate the wastewater treatment plant and produces steam using heat recovery steam generator to produce steam for the THP. A fermenter is used to assist with controlled precipitation of phosphorus to prevent struvite formation. The THP has the important impact of a Class A level of pathogen removal standard for land application as a Class A EQ biosolids fertilizer.

Improved WWTP Performance and Resiliency with High Solids Omnivore™ Anaerobic Digestion
Michael Lucente, Anaergia
Deo Phagoo, Anaergia

There is an increasing need to increase digestion capacity and improve biosolids quality with the use of existing infrastructure or construction of new digesters at lower costs. Omnivore™ advanced anaerobic digestion technology can triple the solids loading capacity and biogas production of existing traditional anaerobic digesters or reduce requirements of new digester to 1/3 of the volume required by traditional digesters. This is achieved through operating Omnivore™ AD at increased solids content and higher organic loading rates while maintaining the solid retention time in the digester by reducing the amount of water unnecessarily treated within the digester.

The benefits of an Omnivore™ retrofit to improve sludge quality, plant resiliency and sustainability will be examined through a case study of the recently executed upgrade at the Camden County Municipal Utilities Authority (CCMUA) Delaware #1 Water Pollution Control Facility (WPCF). The CCMUA recently added Omnivore™ AD high solids digestion and combined heat and power (CHP) facility to reduce the mass and improve quality of biosolids generated while producing electricity and heat for the WWTP to enhance the plant resiliency.

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