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Title: An integrated solution to wastewater and biodegradable organic waste management by applying anaerobic digestion and membrane bioreactor processes
Authors: Solomou, N. 
Stamatoglou, Aimilios 
Malamis, Simos 
Katsou, Evina 
Costa, Costas 
Loizidou, Maria D. 
Keywords: Anaerobic digestion;Biodegradable organic waste;Membrane bioreactor;Wastewater
Category: Earth and Related Environmental Sciences
Field: Natural Sciences
Issue Date: 1-Jan-2014
Publisher: IWA Publishing
Source: Water Practice and Technology Volume 9, Issue 4, 2014, Pages 464-474
Abstract: An integrated system for the biological treatment of wastewater and biodegradable organic waste (BOW) was examined. The system consisted of a membrane bioreactor (MBR) for the treatment of sewage and an anaerobic digestion (AD) unit for the treatment of biowaste and sewage sludge. The ‘zero’ waste concept was the driving force for its implementation, targeting at the effective treatment of BOW, sewage sludge and wastewater and at energy and materials recovery. BOW and wastewater were fed to the integrated treatment system to produce treated effluent suitable for irrigation, energy and a stabilized solid to be used as soil improver. The system was operated for one year, from start-up to process optimization. After the start-up, five experimental stages were carried out for the MBR process and four phases for the AD process. Under optimized operating conditions, the MBR achieved 99% removal of ammonium nitrogen, 95% removal of nitrogen and 96% removal of chemical oxygen demand. The treated effluent satisfied the Cypriot water reuse standards. The energy balance showed that the AD required 5% of heat and 3.5% of electricity from the total energy of the produced biogas to maintain its operation. This resulted in 50% of excess heat and 31.5% of excess electricity.
ISSN: 1751231X
DOI: 10.2166/wpt.2014.051
Rights: © IWA Publishing 2014.
Type: Article
Appears in Collections:Άρθρα/Articles

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