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Title: Operational experiences of industrial scale AD: lessons for the future
Authors: Radu, Tanja
Smedley, Vincent
Wheatley, Andrew D.
Blanchard, Richard E.
Theaker, Helen
Issue Date: 2014
Publisher: © IEEE
Citation: RADU, T. ... et al., 2014. Operational experiences of industrial scale AD: lessons for the future. IN: Proceedings of 2014 1st IEEE International Conference on Non-Conventional Energy: Search for Clean and Safe Energy (ICONCE 2014), Kalyani, India, 16-17 January 2014, pp.131-135.
Abstract: In this paper we discuss operational experiences of two large industrial anaerobic digestion facilities processing brewery waste and maize. The raw effluent from the brewery waste has COD ranging from 5500 mg/l to 41400 mg/l, with variable flow rate and suspended solids up to 4800 mg/l. The Anaerobic Digestion (AD) treatment uses 900m 3 EGSB reactor. The two-year monitoring of data includes Ripley's Ratio, Volatile Fatty Acids, and pH. These parameters indicate lower performance and certain instability before the planned maintenance works, followed by the much improved performance afterwards. The average biogas production is 3540 Nm 3 /day but the variance of the biogas flow remains an issue. The combined Heat and Power (CHP) production from energy crops uses ensilaged, purposely grown maize with 28-34% dry matter and chop length of 6-9mm. The available three-year data for this AD facilities indicate great process stability. It uses 150 t/day of maize, and result in energy production of 21 GW/year which is 7000 homes equivalent. This energy is evenly split between the sewage treatment works and injection to the public electricity grid. Depending on the dry solids content, the digestate is either stored and spread on the land, or sold to farmers.
Description: © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Version: Accepted for publication
DOI: 10.1109/ICONCE.2014.6808705
URI: https://dspace.lboro.ac.uk/2134/26756
Publisher Link: http://dx.doi.org/10.1109/ICONCE.2014.6808705
ISBN: 9781479933402
Appears in Collections:Conference Papers and Presentations (Architecture, Building and Civil Engineering)

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