Wastewater Treatment for a Sustainable Future: Overview of Phosphorus Recovery

Abstract:

Intensified agriculture in response to the growing population has led to excessive nutrient discharges to natural waters causing environmental problems in the form of eutrophication and its associated risks. Treatment options for this adverse effect include removal and recovery of soluble phosphorus by chemical precipitation, biological uptake, and struvite crystallisation. Chemical precipitation is the most common method due to its simplicity, but the chemical requirements can be prohibitive and the removed phosphorus is less reusable. Biological uptake requires less chemicals but the process is complex and prone to seasonal variations. Phosphorus removal and recovery from wastewater by struvite crystallisation is an attractive option since the crystallisation process converts phosphorus into struvite crystals, i.e. phosphate minerals which have proved to be good fertilizer, hence potentially reduces fertilizer production and the subsequent greenhouse gas emissions. Moreover, struvite crystallisation helps prevent scaling of wastewater treatment facilities. A number of struvite crystallisation projects utilising primarily agricultural wastewater is already operational at industrial scale.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 2043-2048
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.2043
• Online since: October 2011
• Authors: S. Muryanto, A.P. Bayuseno
• Keywords: Crystallization, Phosphorus, Renewable, Struvite, Wastewater

References

[1] L.E. de-Bashan and Y. Bashan: Water Research, 38 (2004), pp.4222-4246.

[2] M.I. Ali and P.A. Schneider: Chemical Engineering Science, 61 (2006), pp.3951-3961.

[3] L. Shu et al.: Bioresource Technology, 97 (2006), pp.2211-2216.

[4] Anonymous: Urban Waste Water Treatment Directive- European Commission on Environment, Council Directive of 21 May 1991 concerning urban wastewater treatment (91/271/EEC) (1991).

DOI: 10.1017/cbo9780511610851.054

[5] J. Wang et al.: Journal of Environmental Engineering, (Oct. 2005), pp.1433-1440.

[6] D. Cordell: The Story of Phosphorus. Sustainability implications of global phosphorus scarcity for food security, a joint PhD thesis of University of Technology Sydney, Australia, and Linkӧping University, Sweden, (2010).

[7] A. Britton and R. Baur: Journal AWWA, (Sept. 2010), pp.117-118.

[8] D. Baetens: Enhanced Biological Phosphorus Removal: Modelling and Experimental Design, PhD thesis, Ghent University, Belgium, (2000).

[9] S.A. Parsons and J.A. Smith: Elements, 4 (2008), pp.109-112.

[10] K. Keplinger et al.: SCOPE Newsletter, 70 (Feb. 2008), p.3.

[11] T. Mino: Biochemistry (Moscow), 65(3) (2000), pp.341-348.

[12] Anonymous: How the Cone Technology Works, on-line: www. multiformharvest. com (accessed 12/02/2011).

[13] R. Prasad: Creating Value from Waste, on-line: www. ostara. com (accessed 14/01/2011).

[14] K.S. Le Corre: Understanding Struvite Crystallisation and Recovery, PhD thesis, Cranfield University, the UK, (2006).