Treatment of Animal Waste, Sewage Sludge and Pharmaceutical Sludge using High Solids Anaerobic Digestion

Environmental Biotechnology Limited (EBL), provided design, project management and commissioning services as part of a team to develop a high solids anaerobic digestion plant to treat a mixture of yeast waste, abattoir offal and sewage sludge.

The client, a County Council in Ireland, required demonstration of a successful process able to treat a mixture of local wastes including sewage sludge from a local sewage treatment works, abattoir waste (stomachs and greens) and spent yeast sludge prior to land application.

A successful 20m3 pilot scale system was designed, delivered to site from the UK, installed and operated by EBL personnel. It was important to demonstrate the energy production potential of such a system and biogas was used to power a domestic central heating boiler which was cooled by heat exchanger and fan.

 

Pilot Scale High Solids Digester