Energy potential and alternative usages of biogas and sludge from UASB reactors: case study of the Laboreaux wastewater treatment plant

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Title: Energy potential and alternative usages of biogas and sludge from UASB reactors: case study of the Laboreaux wastewater treatment plant
Authors: Rosa, André Pereira | Conesa, Juan A. | Fullana, Andres | Lobato, Lívia Cristina da Silva | Borges, Jorge Martins | Melo, Gilberto Caldeira Bandeira de | Chernicharo, Carlos Augusto de Lemos
Research Group/s: Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos
Keywords: Biogas | Energy recovery | Sludge | Wastewater treatment | UASB reactors
Knowledge Area: Ingeniería Química
Issue Date: Apr-2016
Publisher: IWA Publishing
Citation: Water Science and Technology. 2016, 73(7): 1680-1690. doi:10.2166/wst.2015.643
Abstract: This work assessed the energy potential and alternative usages of biogas and sludge generated in upflow anaerobic sludge blanket reactors at the Laboreaux sewage treatment plant (STP), Brazil. Two scenarios were considered: (i) priority use of biogas for the thermal drying of dehydrated sludge and the use of the excess biogas for electricity generation in an ICE (internal combustion engine); and (ii) priority use of biogas for electricity generation and the use of the heat of the engine exhaust gases for the thermal drying of the sludge. Scenario 1 showed that the electricity generated is able to supply 22.2% of the STP power demand, but the thermal drying process enables a greater reduction or even elimination of the final volume of sludge to be disposed. In Scenario 2, the electricity generated is able to supply 57.6% of the STP power demand; however, the heat in the exhaust gases is not enough to dry the total amount of dehydrated sludge.
URI: http://hdl.handle.net/10045/65693
ISSN: 0273-1223 (Print) | 1996-9732 (Online)
DOI: 10.2166/wst.2015.643
Language: eng
Type: info:eu-repo/semantics/article
Rights: © IWA Publishing 2016
Peer Review: si
Publisher version: http://dx.doi.org/10.2166/wst.2015.643
Appears in Collections:INV - REMAN - Artículos de Revistas
INV - I4CE - Artículos de Revistas

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