PJM Mechanical Contractors, Inc. is currently finishing up work at Trenton Biogas, a new clean energy facility set to go online in early 2020. As the first large-scale anaerobic biodigester facility of its type in New Jersey, Trenton Biogas is paving the way for the Garden State to take another step in the direction of going green. Each year, the facility has the potential to recycle over 110,000 tons of food waste from local homes and businesses that previously would have been destined for landfills. Through Trenton Biogas’s anaerobic biodigestion process, the waste is utilized to produce up to 29,000 MWh of renewable energy and 23,000 tons of organic compost per year.
The project scope involved utilizing and retooling an $83 million sludge treatment facility erected on Duck Island in 1992 that never became operational. Due to the challenging nature of retrofitting existing structures on a project of this scale, a very dynamic work environment was created. PJM’s responsibilities included the plumbing and HVAC aspects of the facility, starting with a thorough assessment of existing HVAC equipment and systems to be reused. Also included was installation of new safety fixtures, heating and cooling equipment, and the odorous air ventilation system.
Impressed with our performance on site, the project team awarded PJM additional work involving rigging and installation of the ammonia stripper system located on the high steel. Columns, some as large as 35-ft tall by 7-ft wide, were set in structural steel openings 90 ft. above grade with clearances as narrow as 2 inches. Upon setting the columns, PJM was required to utilize a dual-crane operation to make duct connections inaccessible from below, with one crane hoisting the material into place while PJM’s crew installed it from a man basket suspended from the second.
Project manager David Robinson took a hands-on approach from the start, thoroughly reviewing documents and identifying, mitigating and overcoming various challenges. “In any project”, he stated, “coordination and communication are always the keys to success.” PJM and Trenton Biogas project partners were recently recognized by NJ Alliance for Action’s New Jersey’s Leading Infrastructure Projects Award Program for representing “a great example of what can be done when organizations work as a team to develop a fantastic project”. The program was created to “highlight innovative, pioneering and landmark construction initiatives that greatly impact the state’s economy and honor businesses and organizations that work together to ensure the project’s success.”
PJM Mechanical Contractors, Inc. is a multi-faceted mechanical contractor providing construction and installation, service and maintenance, and design/build services in a comprehensive range of mechanical disciplines that include HVAC, plumbing, controls, refrigeration, custom metal fabrication, piping, and backflow preventer testing. PJM primarily serves clients in pharmaceuticals, manufacturing, healthcare, institutional, and other various commercial and industrial sectors.