The move towards carbon neutrality in wastewater treatment plants is commendable but the energy cost of biological treatment is sometimes exaggerated which may lead to less cost-effective carbon reduction than that which could be achieved elsewhere. Wastewater treatment should be seen
as a resource for recovery of energy, nutrients and water for re-use. This paper tries to put energy use and green house gas (GHG) emissions at wastewater treatment plants in perspective by comparing outputs on a per capita basis. It is shown that the energy use for biological nutrient removal,
excluding pumping and other peripherals is less than 0.1% of all energy use and that overall reduction in water consumption is much more important in terms of energy savings and reduction of GHG emissions.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.