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A platform for research: civil engineering, architecture and urbanism
Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study
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.
Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study
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.
Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study
Farno, Ehsan (author) / Baudez, Jean Christophe (author) / Parthasarathy, Rajarathinam (author) / Eshtiaghi, Nicky (author)
Journal of Environmental Science and Health, Part A ; 52 ; 429-432
2017-04-16
4 pages
Article (Journal)
Electronic Resource
English
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