|This document is Appendix B3 (of 3) of the Energy from Waste UK Benefits Case (Deliverable 2 of 2 in Work Package 4).The ETI commissioned AEA to provide an up-to-date assessment of current development and demonstration activities in EfW technologies, including both Advanced Thermal Treatment (ATT) and Anaerobic Digestion (AD) technologies. This document is the review of Advanced Thermal Treatment technologies.
In summary, there are currently very few operational ATT processes, despite a wealth of investment and R&D input. There are far more examples of problems and failures than fully operational facilities. This is a reflection of the problems explained in the report, and concerns about feedstock quality, consistency and the resources required to make thes e processes success when using waste as a feedstock.
More progress is now being made in the gasification of clean biomass with several installations now operating successfully, but these processes were outside the scope of this review. It would be valuable to extend this review to analyse the lessons from this field. Biomass gasifiers have now achieved many tens of thousands of hours of operational experience, most notably in Austria and Denmark.