Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study

Farno, E, Baudez, J, Parthasarathy, R and Eshtiaghi, N 2016, 'Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study', Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering, vol. 52, no. 5, pp. 429-432.


Document type: Journal Article
Collection: Journal Articles

Title Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study
Author(s) Farno, E
Baudez, J
Parthasarathy, R
Eshtiaghi, N
Year 2016
Journal name Journal of Environmental Science and Health. Part A: Toxic Hazardous Substances and Environmental Engineering
Volume number 52
Issue number 5
Start page 429
End page 432
Total pages 4
Publisher Taylor and Francis
Abstract In a wastewater treatment process, energy is mainly used in sludge handling and heating, while energy is recovered by biogas production in anaerobic digestion process. Thermal pre-treatment of sludge can change the energy balance in a wastewater treatment process since it reduces the viscosity and yield stress of sludge and increases the biogas production. In this study, a calculation based on a hypothetical wastewater treatment plant is provided to show the possibility of creating a net positive energy wastewater treatment plant as a result of implementing thermal pre-treatment process before the anaerobic digester. The calculations showed a great energy saving in pumping and mixing of the sludge by thermal pre-treatment of sludge before anaerobic digestion process.
Subject Wastewater Treatment Processes
Keyword(s) Mixing
net positive energy
pumping
thermal pre-treatment
DOI - identifier 10.1080/10934529.2016.1270674
Copyright notice © 2017 Taylor and Francis Group, LLC
ISSN 1093-4529
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