Literature

The influence of biosolids on attaining energy neutrality at a wastewater treatment plant


Barber, WPF

AWA Water Journal, 2014

Abstract

Wastewater, sludge and subsequent biosolids are large inherent energy sinks, and in most cases contain more energy than required to operate a treatment plant. The paper explores how this energy can be exploited to minimise plant demands. It finds that no one single measure can help achieve energy neutrality, rather a combination of processes.

The use of anaerobic digestion was found to reduce energy demands by over a third, and by 60% when combined with enhanced primary treatment. Energy neutrality was potentially achievable by combining these processes with further energy recovery downstream via burning as a cake. However, this study highlighted the poor energy extraction capability of anaerobic digestion when considered in a plant-wide envelope.

Read the full article in the Water Journal, Australian Water Association.

 

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