Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study.
Identifieur interne : 000747 ( Main/Exploration ); précédent : 000746; suivant : 000748Net positive energy wastewater treatment plant via thermal pre-treatment of sludge: A theoretical case study.
Auteurs : Ehsan Farno [Australie] ; Jean Christophe Baudez [France] ; Rajarathinam Parthasarathy [Australie] ; Nicky Eshtiaghi [Australie]Source :
- Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering [ 1532-4117 ] ; 2017.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Sewage, Waste Water.
- chemical : Biofuels.
- methods : Waste Disposal, Fluid, Waste Management.
- Anaerobiosis, Humans, Models, Theoretical, Temperature.
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.
DOI: 10.1080/10934529.2016.1270674
PubMed: 28085558
Affiliations:
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