Dehumidification System Adds Efficiency to Biogas Production

Problem: The Eastern Treatment Plant at Australia Melbourne Water treats almost half of the city’s sewage and is the largest activated sludge plant in the Southern Hemisphere. The utility undertook an upgrade of the biogas handling system to make it more efficient, resilient and futureproof. A system to remove moisture was essential to minimize corrosion, protect the power station generators and limit downtime. Solution: The BDS system (HRS Heat Exchangers) removes water from biogas. It condenses more than 90% of the water. The addition of heat regeneration technology means the cold biogas can be used to pre-cool the incoming warmer biogas,