This private developer partnership needed assistance designing and constructing a system to convert a landﬁll from a ﬂaring operation to a renewable natural gas (RNG) producing facility. The RNG compression system needed upgrades so that the RNG could be placed in the gas distribution system and liquiﬁed to replace diesel fuel for ﬂeets of long-haul trucks. Our team designed and managed the construction of this innovative landﬁll-to-RNG system, one of the largest in Indiana, as well as the fueling station upgrade. The RNG system included equipment to remove carbon dioxide, nitrogen, and other impurities from the landﬁll gas, resulting in 98% methane. We performed process, structural, mechanical, electrical, and controls engineering for the refrigerated dryer skid, and fabricated it prior to shipping to the site. For the compressor station upgrade, we managed construction and performed engineering to construction speciﬁcations for the process and mechanical equipment, control valves, piping, instrumentation, and integration of plant equipment and controls.
Key Project Aspects
Treats 4,000 SCFM of landﬁll gas
Produces ~8 million gal RNG/yr
RNG fuels ﬂeets in the Midwest