Water Journal : Water Journal May 2011
refereed paper biosolids water MAY 2011 93 processes such as anaerobic digestion at smaller scale, emerging pre-treatment methods such as biological processes can improve performance again to acceptable levels, while providing other benefits such as hygenisation and quality improvements. It is important to consider the way that the pre-treatment method fundamentally changes material properties, in particular whether it changes biochemical conversion speed, or ultimate extent. This can be used to assess design of downstream processes and inform expected performance under a wide range of possible future conditions. Acknowledgements Our research into biological pre-treatment was funded by the Queensland State Government under the Smart State Research-Industry Partnerships Program (RIPP), Meat and Livestock Australia and Environmental Biotechnology Cooperative Research Centre (EBCRC), Australia as P23 "Small-medium scale organic solids stabilisation". Huoqing Ge and Paul Jensen are recipients of an EBCRC postgraduate scholarship and postdoctoral award, respectively. The Authors Damien Batstone (email: damienb@awmc. uq.edu.au) is an Australian Research Fellow at the Advanced Water Management Centre, and is joint leader of the Anaerobic Biotechnology research group. Paul Jensen is an EBCRC research fellow and is joint leader of the biosolids research program at the Advanced Water Management Centre. Huoqing Ge has recently completed her PhD in biological pre-treatment, and particularly the impact of temperature and other factors on digester performance. References Batstone DJ, Tait S & Starrenburg D, 2009: Estimation of Hydrolysis Parameters in Full- Scale Anerobic Digesters. Biotechnology and Bioengineering 102(5): pp. 1513-1520. Carrère H, Dumas C, Battimelli A, Batstone DJ, Delgenès JP, Steyer JP & Ferrer I, 2010: Pretreatment methods to improve sludge anaerobic degradability: A review. Journal of Hazardous Materials 183(1-3): pp. 1-15. Ge H, Jensen PD & Batstone DJ, 2010: Pre- treatment mechanisms during thermophilic- mesophilic temperature phased anaerobic digestion of primary sludge. Water Research 44(1): pp. 123-130. Ge H, Jensen PD & Batstone DJ, 2011: Increased temperature in the thermophilic stage in temperature phased anaerobic digestion (TPAD) improves degradability of waste activated sludge. Journal of Hazardous Materials 187(1-3): pp. 355-361. Gossett J & Belser R, 1982: Anaerobic digestion of waste activated sludge. Journal of Environmental Engineering ASCE 108: pp. 1101-1120. Hudson JA, 1995: Treatment and Disposal of Sewage-Sludge in the Mid-1990s. Journal of the Chartered Institution of Water and Environmental Management 9: pp. 93-100. Murthy S, Higgins M, Chen YC, Peot C & Toffey W, 2006: High-solids centrifuge is a boon and a curse for managing anaerobically digested biosolids. Water Science & Technology 53: pp. 245-253. Novak JT, 2006. Dewatering of sewage sludge. Drying Technology 24(10): pp. 1257-1262. Warne M, McLaughlin M, Heemsbergen D, Bell M, Broos K, Whatmuff M, Barry G, Nash D, Pritchard D, Stevens D, Pu G & Butler C, 2009: Draft Position Paper Recommendations of the Australian National Biosolids Research Program on Biosolids Guidelines.
Water Journal April 2011
Water Journal July 2011