ABSTRACT
Hydrogen Sulfide (H2S) has been a problematic gas compound for centuries. In this paper the development of H2S treatment technologies from past to future is demonstrated with field data from industrial and pilot plants. DMT has designed and constructed biological desulfurization systems for treatment of both air and biogas. The development starts with bio-filters followed by lava rock-and bio-trickling filters (BTF). The newest bio-reactors are now highly sophisticated biological scrubbers. The internal processes are pH, temperature, nutrient and oxygen controlled. During an extensive research period over the last 15 years, the elimination capacity (EC) has been multiplied 10 to 50 times from minimum 10 to maximum 100-500 gH2S/m
3 * hr with removal efficiencies over 99%. Optimum process conditions and maximum removal efficiencies have been determined by variation of all relevant process conditions. Even higher ECs can be expected in the near future due to the development of new highly structured packing materials.
