This agricultural digester facility, which produces 270 SCFM, utilized the activated carbon vessels (right side of photograph) for a period of 6-months to remove 2,000 ppm, accumulating more than $150,000 in operating costs for H2S removal alone.
MV Technologies provided a solution to replace an activated carbon system integrated with a CHP installation. A single-vessel system was integrated, utilizing 12’ diameter x 14’ tall vessel containing 1,344 ft3 of MV’s media. The system is designed to have a 270 day bed life with an approximate annual media expense of $35,000.
MV Technologies supplied a low-cost solution for H2S removal from a 350 SCFM biogas stream generated at this digester facility. The anticipated H2S levels are 200-2,000 ppm, with occasional spikes to 5,000 ppm. The operator was spending several thousand dollars per week on an activated carbon H2S scrubber and additional costs associated with the frequent replacement of the activated carbon.
The single vessel H2SPlus System is designed to deliver less than 25 ppm outlet H2S, regardless of fluctuating inlet H2S concentrations. The 12’ diameter x 11’-6” tall vessel utilizing 1,050 ft3 of enhanced iron sponge media is designed to last at least six-months before media replacement is required. Due to high cost of the activated carbon the operator considered shutting down the power plant prior to the installation of the H2SPlus System. The MV system allowed the power generation portion of the project to return to profitability.
A large meat processing facility in Colorado processes 5,000 cattle head/day on average. Digested processing waste generates 1,400 SCFM biogas from a covered lagoon with H2S concentrations from 1,600-2,000 ppm. The biogas is typically utilized in the facility boilers and is required to meet the site air permit conditions.
MV Technologies installed an H2SPlus System with three 12’ diameter by 10’ tall vessels. The system continues to operate efficiently to achieve the desired H2S concentration delivered to the biogas boilers. The system was initially installed to meet the facility’s air permit however the facility realized a very dramatic decrease in the maintenance requirements for the boilers. This site is currently evaluating expansion to a fourth vessel and an upgraded controls system.