Landfill Gas

Once considered a liability, Landfill Gas (LFG) is now being transformed into an asset benefitting landfill owners, communities, industry, and the environment. With a composition of approximately 50% Methane, LFG is a renewable alternative to traditional natural gas. With over 30 years of experience in the pipeline and chemical industries, HGA offers municipalities, project developers, and industrial companies the EPC services they need to efficiently collect, clean, and transport the refined LFG (methane) through pipelines or as highly marketable CNG and LNG. The HGA Team has more than 90 years of experience in the development of landfill gas into merchantable products.

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New Facilities or Updating/Converting

Whether you plan to build a greenfield processing plant or looking to optimize your existing facility HGA can advise you from concept to start up. Our EPCM approach to LFG processing provides our clients with services from consultation and design to construction, commissioning, and start-up.  With over 20 years of experience in engineering and project management, our team has successfully executed projects from $100,000 to over $150,000,000.  Having designed and built some of the earliest LFG processing plants in the U.S.; our team offers more than 90 years of combined experience in renewable fuels processing.

HGA Gas Treating process

HGA has developed a novel process designed to handle high atmospheric intrusion, without the use of a Nitrogen Rejection Unit (NRU) or the need for high inlet gas compression.  This unique approach is the preferred process for landfills with high levels of N2 due to atmospheric intrusion.  The removal of the NRU, the DEOx unit, and high-pressure compressors lowers both installation and maintenance costs while maintaining high volume capacity and ultimately producing a higher concentration of Methane.

gas treating

H2S and siloxane removal

HGA’s approach to H2S and Siloxane removal utilizes a regeneratable liquid scavenger system that discharges elemental Sulfur and therefore produces no air emissions. With the use of a liquid scavenger, our process eliminates the need for periodic solid media replacement, potential downtime, and hazardous waste disposal that is required by dry H2S removal systems and thermal oxidizer permitting.  For siloxane removal, HGA incorporates a deep chilling technology that combines the necessary dehydration for LFG treatment with a novel approach for siloxane removal which discharges the removed siloxanes and VOCs as an aqueous discharge, eliminating the air emissions of other removal technologies.

Have you considered LNG?

The ability to further process LFG into Liquified Natural Gas (LNG) offers LFG and Biogas producers that were previously unable to maximize the value of their asset a viable means to access the RNG market’s full potential. Not only is LNG a higher quality, but the higher-valued product (~ 98% pure methane) it is also easily transportable by truck and rail providing new access to a multitude of potential customers and applications.  This approach is particularly applicable to projects where natural gas pipelines are either logistically inconvenient or in areas difficult to permit interconnections.

gas piping

Traditional vs. Virtual Pipeline

HGA has been involved in the design and construction of pipelines and powerlines for over 20 years, with approximately 5,000 miles of route evaluated and designed by HGA.  If your facility has a pipeline nearby and building a short (feeder) pipeline to tie into a larger one is the most feasible option for you, we can help determine the right layout, assist in getting right-away and permits, as well as design and construction.

For trusted expertise and landfill gas system development, you can rely on HGA.