Overview
FrançaisABSTRACT
Reducing the energy consumption of urban and industrial wastewater treatment plants is a real issue for the development of the future sustainable city. This article discusses bacterial battery technology that could help treatment plants become self-sufficient in energy. The principle of operation and the first development steps of this emerging technology are described. The production of electrical energy from wastewater and the potential for exploiting bacterial batteries in treatment plants are then developed, before concluding on the prospects offered by this new technology.
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Read the articleAUTHOR
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Naoufel HADDOUR: Senior Lecturer - Ampère Laboratory, Ecole Centrale de Lyon, Ecully, France
INTRODUCTION
Sector: Water treatment
Degree of technology diffusion: Emergence
Technologies involved : Bacterial cells
Applications: Water treatment, waste-to-energy, renewable energy
Contact: [email protected]
Wastewater treatment plants consume large quantities of energy, most of which is purchased from the network, even though wastewater contains more energy in chemical form than is required for its own treatment. The energy potential of wastewater can be judiciously exploited by new technologies such as bacterial cells to reduce the energy consumption of treatment plants. These can convert organic matter in wastewater directly into electricity, using bacteria as biocatalysts. This innovative technology has been attracting growing interest since the 2000s, and has great potential to help limit the operating costs of wastewater treatment plants, and even lead to plants with a positive energy balance.
This article presents bacterial cell technology as applied to wastewater treatment in wastewater treatment plants. It discusses the theoretical and practical principles of this technology, and compares its performance with competing technologies. The methodology to be followed, from laboratory to industrial scale, is also presented, outlining the reactor architectures and materials used. Examples of industrial pilots are given, illustrating the different implementation options and the costs involved. Finally, the outlook for this technology is discussed in the context of a new generation of wastewater treatment plants.
At the end of the article, readers will find a table of the notations used.
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KEYWORDS
water treatment | energy | wastewater | bacteria
CAN BE ALSO FOUND IN:
Home Environment - Safety Water technologies Bacterial batteries: clean energy with dirty water
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Bacterial cells: clean energy from dirty water
Bibliography
- (1) - PAITIER (A.), MOREL (H.) - Etude de la mise à l'échelle des piles à combustible microbiennes : collecteurs de courant et hydrodynamique, - 2017, [Online]. Available: http://www.theses.fr/2017LYSEI107/document .
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Standards and norms
- Water quality – Determination of chemical oxygen demand (COD) (Classification number : T90-101). - NF T90-101 - février 2001
Regulations
Law no. 83-634 of July 13, 1983 on rights and obligations... (consolidated version of March 3, 2002).
Décret n° 2000-44 du 13 janvier 2000 portant... (version consolidée au 5 octobre 2007) JO n° 11 du 14 janvier 2000 page 369 NOR : FPPA9910013D.
Patents
Biofilm production on biopile electrode, electrode and biopile obtained WO2009153499 A3.
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
– Developer of bacterial cell reactors (Electrogenic BioReactor)
Fluence
– Supplier of electrochemical equipment
Origalys
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