Biogas Desulphurisation

Untreated biogas can cause serious, costly and permanent damage to boilers, cogeneration systems or biogas upgrading systems. The energy-efficient BIDOX® guarantees that all treated biogas will contain low levels of hydrogen sulphide (H2S), reducing the operating costs of biogas processing systems, because no chemical additives are required.

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Application

Wherever biogas is produced or used, you will find a biogas treatment system that either increases pressure, desulphurises or dries the gas, so that it can be used in a boiler, cogeneration system, engine or green gas upgrading system. BIDOX® systems can be used at biogas and landfill gas installations, treating gas with H2S concentrations up to 10,000 ppm.
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Process

The sulphur-containing biogas is treated with aerobic bacteria in a biological gas scrubber, removing H2S under aerobic conditions. A small amount of the washing water is discharged from the BIDOX® and fed into an existing wastewater treatment system, or used as a diluted sulphuric acid or herbicide. The bacteria in the BIDOX® require only a small amount of trace elements and minimal aeration, resulting in low operating costs. Nutridox® contains the perfect mix of trace elements. The open gasket material and optimised design help prevent blockages in the BIDOX®.
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Advantages

The BIDOX® is characterised by:

  • Low operating costs
  • Biological process, requiring no chemicals