Gas Desulfurization at a Wastewater Treatment Plant

Gas desulfurization of biogas and syngas is necessary to prevent mechanical corrosion and SOx emissions. Biogas is produced by fermenting biological waste and is considered one of the most important sources of renewable energy. Both biogas and syngas can contain hydrogen sulfide (H₂S), so gas desulfurization is essential. Since the Sulfurex directly controls the caustic dosing with its H₂S sensor, the system requires very little time to adapt to fluctuations in H₂S load. Other advantages of the Sulfurex are the relatively small footprint, efficiency, capacity, easy maintenance and low operational costs. The projects below were built in Auckland, New Zealand and in Shafdan, Israel. The project in the Shafdan area has four columns and is the biggest Sulfurex®BF built for a water treatment plant.

Auckland, New Zealand


2016, Sulfurex®BF
Flow: 450 SCFM
H2S: 3,000 ppm to < 100 ppm
Biogas Source: WWTP
Application: Fuel for CHP

Shafdan, Israel


2016, Sulfurex®BF (4 columns)
Flow: 4,500 SCFM
H2S: 4,000 ppm to < 50 ppm
Biogas Source: WWTP
Application: Fuel for a CHP to Make Electricity

Conventional wastewater treatment systems are focused on efficient removal of polluting components. This is commonly done through aeration and separation of formed biomass from the cleaned water. After treatment, the water would be discharged onto surface waters or subsoil irrigation. Introduction of polishing steps after these treatment systems opened the possibility to reuse water for either irrigation or even potable water. DMT also implements these solutions with TurboTec, applying thermal hydrolysis.

Product Description of the Sulfurex, Gas Desulfurization
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