A leading biogas developer, approached MV Technologies for a system to reduce the total hydrogen sulfide concentration in a biogas stream from a 15,000-head manure-based digester. The system was required to meet the facilities air emissions permit requirements. Generating 4.2MW, the digester H2S concentration can fluctuate from 800-1,000 ppm.
A single-vessel H2SPlus System treats a portion of the gas to reduce the amount of H2S to comply with the facility’s air permit. Originally the operator of the system treated only enough biogas to comply with the air permit. They found their engine maintenance cost decreased as they increased the amount of biogas treated. The increased media cost was more than justified by the decreased maintenance cost. This facility is considering system expansion and may add a second vessel to their H2SPlus System to treat more of the gas flow and deliver less sulfur to the engines. .
A co-generation energy facility was developed to utilize biogas from a poultry protein processing facility digester. Prior to gas utilization, the methane was simply flared.
MV Technologies provided a single-vessel solution to reduce the influent H2S concentration to below the desired 200 ppm requirement for the CHP equipment. MV Technologies partnered with a biogas conditioning and packaging firm to provide a turnkey solution for this client. The provided package conditions the digester gas (H2S and moisture removal) and compresses the gas for delivery to the cogen unit.
A digester on-site at a dairy food processing farm treats facility wastewater consisting mostly of wash water and chemicals from cleaning food processing equipment. An H2S removal system was needed to treat the gas for a micro turbine. In addition the biogas can also be combusted in a boiler.
MV Technologies worked directly with the client to develop a customized vessel configuration to accommodate the specific flow rate and H2S concentrations expected from the digester. The facility has realized a significant reduction in the boiler maintenance after the installation of this system.
An Idaho potato processing facility wanted to utilize flared biogas from an onsite digester to save money and reduce their energy footprint. A solicitation for bids was sent out in late 2013 and the system was operational the following Spring.
A two-vessel H2SPlus System was designed and supplied to reduce the H2S concentrations below 45 ppm. Media bed life is approximately 12-months at current flow and H2S concentration.