Case History: Controlling H2S Emissions from Landfill Gas

A major US waste handling company operates a large landfill in Florida, and in 1992, when Hurricane Andrew struck southern Florida, the landfill saw a huge increase in the amount of C&D waste. Shortly after this, the levels of H 2 S started dramatically rising. This company evaluated several technologies for the removal of H₂S, which was estimated to be as high as 5000 ppmv, with up to 2-3 tons/ day H₂S being removed with the landfill gas. This presented a problem, since the landfill planned to generate up to 11 MW power from 3-5 turbine powerplants by burning this landfill gas. All combustion equipment has a certain tolerance for H₂S and its corrosive combustion products, but turbines have the lowest tolerance. The equipment at the facility could only tolerate 100 ppmv inlet H₂S, well below the current levels in the landfill gas.

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