Biogas produced at wastewater treatment plants, landfills and agricultural biogas plants contains components such as hydrogen sulfide or chlorides, which adversely affect the condition and operation of equipment using biogas fuel. Hydrogen sulfide content in biogas can be as high as 20,000 ppm (2 percent by volume) or more.
Effective and efficient biogas desulfurization plants
CES offers cost-effective yet highly efficient biological desulfurization systems. Desulfurization is done by biological method and does not require the use of chemicals.
The gas flows through a column filled with an artificial material used to multiply bacteria. Air added in small amounts (about 8% - 13% relative to the amount of gas) to the desulfurization column allows special bacteria to effectively convert hydrogen sulfide into elemental sulfur and sulfuric acid.
Advantages of our Biological Desulfurization Plants
- Biological treatment, desulfurization of biogas from hydrogen sulfide
- High efficiency with low operating costs
- Zero consumption of chemicals
- Easy operation and maintenance
- Fully automated process
- No harmful waste substances
Main features of biological desulfurization plants
- Gas flow rate: 10 - 5,000 m3/h
- H2S content in gas: 2 to 20,000 ppm (2% by volume)
- Hydrogen sulfide removal efficiency: > 95%
- Gas input temperature : up to 40°C
- Standard operating pressure : up to 40 mbar (higher on request)
- Ambient temperature : from -30°C to +50°C
Sulfur bacteria (Thiobacillus) for proper execution of the process need:
- Surface area for multiplication
- A small amount of oxygen
- Nutrients and micronutrients
Oxygen is added in the form of compressed air, while artificial fertilizer, which is available in all countries around the world, is used as a source of nutrients and trace elements.
Where biogas desulfurization is required?
- Agricultural biogas plants
- Landfills
- Municipal and industrial wastewater treatment plants
- Chemical plants
- Paper mills
- Food industry