Proceedings

PRODUCTION OF BIOSOLIDS BY ATAD FROM A HIGHLY VARIABLE MUNICIPAL SOURCE

Layden N and Bartlett J.
The Centre for Sustainability, Institute of Technology Sligo

(free)

The Autothermal Thermophilic Aerobic Digestion facility in Killarney was constructed as part of an Irish national development programme to meet the requirements of the EU Directives 86/278/EEC (sewage sludge) and 91/271/EEC (urban wastewater treatment).

The wastewater treatment plant in Killarney is unique because, as a major tourist location, the population increases by threefold in the summer months. Also, there are different secondary systems producing a blended sludge for treatment. The ATAD plant was commissioned in 2001 and has proven effective in treating this highly variable municipal waste. This paper describes the operational development and treatment standard of the plant since commissioning.

KEYWORDS Autothermal; Thermophilic; Aerobic Digestion; Temperature; Sewage Sludge; Stabilization; Biosolids

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