Maximising biogas in anaerobic digestion by using engine waste heat for thermal hydrolysis pre-treatment of sludge

Pickworth, B, Adams, J, Panter, K, and Solheim, OE

Water Science and Technology, 2006


Dublin's Ringsend WWTP was designed to serve a population of approximately 1.2 million p.e. with a sludge production of 37,000 dry tonnes per year after upgrading to full secondary treatment. Several technical solutions were put forward as part of a design, build, finance and operate (DBFO) competition, with the chosen solution being a proposal by Black and Veatch for a combination of sequencing batch reactor (SBR) technology and anaerobic digestion with Cambi thermal hydrolysis pre-treatment (THP).

The THP plant was built by Cambi and handed over to B&V in 2002. The plant is now operated by Celtic Anglian Water. In September 2004, a test was carried out on the mass and energy balance of the plant following 2 years of operation and is detailed in this paper.

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