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Solar-powered aeration and disinfection, anaerobic co-digestion, biological CO2 scrubbing and biofuel production: the energy and carbon management opportunities of waste stabilisation ponds

Shilton, A.N., Mara, D.D., Craggs, R. and Powell, N. (2008) Solar-powered aeration and disinfection, anaerobic co-digestion, biological CO2 scrubbing and biofuel production: the energy and carbon management opportunities of waste stabilisation ponds. Water Science & Technology, 58 (1). pp. 253-258. ISSN 0273-1223

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Abstract

Waste stabilisation pond (WSP) technology offers some important advantages and interesting possibilities when viewed in the light of sustainable energy and carbon management. Pond systems stand out as having significant advantages due to simple construction; low (or zero) operating energy requirements; and the potential for bio-energy generation. Conventional WSP requires little or no electrical energy for aerobic treatment as a result of algal photosynthesis. Sunlight enables WSP to disinfect wastewaters very effectively without the need for any chemicals or electricity consumption and their associated CO2 emissions. The energy and carbon emission savings gained over electromechanical treatment systems are immense. Furthermore, because algal photosynthesis consumes CO2, WSP can be utilised as CO2 scrubbers. The environmental and financial benefits of pond technology broaden further when considering the low-cost, energy production opportunities of anaerobic ponds and the potential of algae as a biofuel. As we assess future best practice in wastewater treatment technology, perhaps one of the greatest needs is an improved consideration of the carbon footprint and the implications of future increases in the cost of electricity and the value of biogas.

Item Type: Article
Copyright, Publisher and Additional Information: © IWA Publishing 2008.
Keywords: aeration, anaerobic digestion, carbon management, disinfection, energy, high rate algal ponds, waste stabilisation ponds
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds)
Depositing User: Ms Caroline Wilson
Date Deposited: 19 Jan 2009 16:49
Last Modified: 08 Feb 2013 17:05
Published Version: http://www.iwaponline.com/wst/05801/0253/058010253...
Status: Published
Publisher: IWA Publishing
Refereed: Yes
Identification Number: 10.2166/wst.2008.666
URI: http://eprints.whiterose.ac.uk/id/eprint/5305

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