Biogas desulfurization plant

biological

Biological Desulphurization Plant Process Description: A certain amount of air is led to mix with raw biogas. The H2S would be removed in the biological desulphurization tower when mixed gas gets through it. Special plastic packings are installed inside the reactor to provide sufficient space for the propagation of bacteria. The circulation of nutrient solution keeps the packings wet and supplements nutrients required for the growth and reproduction of the bacteria. Exclusive species (such as Thiothrix or Thiobacillus) live and breed on the nutrient in the packings. By this means, they absorb H2S from the mixed gas and convert it into elemental sulfur, which then is converted to dilute sulfuric acid. System Configuration Lighthouse 1. Reactor 2. Packings 3. Biogas feed 4. Air supply 5. Nutrient solution supply 6. Dilute water 7. Circulating liquid 8. Nutrient Pump 9. Heat exchanger 10. Biogas analyzer 11. pH controller 12. Thermometer 13. Nutrient level controller 14. Air flowmeter 15. Spend nutrient solution 16. Flow switch