This report compares the expected life cycle emissions associated with the injection of biomethane into the gas distribution network compared with those generated from the supply of fossil fuel based natural gas.
Report extract
Sydney Water’s Malabar WWTP (located at Malabar Headland) is one of Sydney Water’s largest treatment plants in NSW. It provides primary treatment, with treated wastewater discharged via a deep-water ocean outfall.
At Malabar WWTP, the sludge produced from the primary treatment process is sent to multiple Anaerobic Digester (AD) units to be converted into biogas. The current Malabar cogeneration plant consumes the bulk of its raw biogas output for electrical power generation and water heating. The balance of biogas that cannot be utilised in site processes is combusted through waste gas burners.
