Biogas and biosolids from anaerobic digestion (AD) are very topical in view of the Food Waste and Energy imperatives, which will lead to a large increase in AD capacity over the next five years. AD provides a viable solution for Food and Farm Waste, which will not be allowed in landfill after 2015. Biogas from AD is expected to become a significant contributor of renewable heat and power. The water industry is already well along the learning curve, as it now treats about half of all sewage by AD, yet despite this long experience, there are still concerns around use of biosolids (digestate) as fertiliser.
This joint SCI/Fera event focused on business opportunities around AD. The morning session opened with an overview of the regulatory playing field; inputs, technology and biomethane utilisation; environmental law issues; constraints on the use of biosolids; and the use of existing assets. The afternoon session opened with a review of the risks, then an overview of the sewage sludge phytoconditioning process, followed by opportunities for business, including co-digestion of waste with sewage sludge, the case for recycling plant nutrients, and biogas generation.
Available Conference Papers:
Biorenewable fuel and fertiliser – can there be a level, science-based regulatory playing field?
Tim Evans, Tim Evans Environment
Inputs, technology and biomethane utilisation: an overview
Geraint Evans, NNFCC (National Non-Food Crops Centre)
Environmental law issues: the regulatory environment
Teresa Hitchcock, DLA Piper
Constraints on use of biosolids in agriculture
Aarun Naik, NFU
The use and extension of existing assets
Mark Worsfold, OFWAT
Does the science address the risks?
Stephen Smith, Imperial College
Waste to product via sludge phytoconditioning - Yorkshire Water’s experience
Jim Byrom, Yorkshire Water
The potential for, and benefits and complexity of co-digesting waste with sewage sludge
Bill Barber, United Utilities
Why recycle nutrients, especially phosphate?
Chris Dawson, Chris Dawson and Associates
Business opportunities for anaerobic digestion (AD)
Dorian Harrison, Monsal