A potential solution is to ...
Published by Mike Dempsey, Managing Director, Advanced Bioprocess Development Ltd.
A potential solution is to use anaerobic digestion of raw sewage, to maximise energy recovery, as methane-rich biogas, and minimise sludge production. This would be followed by aerobic treatment for polishing, before returing trhe purified water to the aquatic environment. However, the capital cost of this might be too high to be cost-effective with present technologies.