Performance of a Pilot-Scale Hydrolysis Acidification and Improved UASB Process for the Treatment of Alcohol Wastewater: Sludge Granulation and Treatment Efficiency

Abstract:

A system termed hydrolysis acidification-improved upflow anaerobic sludge blanket (HA-IUASB) was developed for alcohol wastewater treatment. The improvements of the UASB were that: a reflux pipe was set below the three-phase separator, and the mud mixture treated by the granular sludge bed returned into the water inlet.The improved UASB starts up completely after 61 days operation and the COD removal rate is between 70~96% during startup stage. The mature granule size reachs 3 mm and the methanogenic bacteria inside are mainly bacillus and cocci through Scanning Electron Microscope (SEM) observation. The treatment efficiency of the improved UASB is high and COD removal rate is 55%~80%. COD removal rate reachs 70%~87% by HA-UASB system under the condition of high concentration alcohol wastewater. CH₄ is the main constituent and the percentage is 81.61% according to the gas composition analysis. This study proves that HA-IUASB is a feasible and practical means to treat alcohol wastewater.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2246-2251
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2246
• Online since: August 2013
• Authors: Lu Ji Yu, Hui Ying Wang, Hong Jie Song, De Fang Kong, Tao Chen
• Keywords: Alcohol Wastewater, Granular Sludge, Hydrolysis Acidification, Improved UASB

References

[1] P.V. Vadlani, K.B. Ramachandran: Bioresource Technol. Vol. 99(2008), p.8231

[2] M.M. Ghangrekar, S.R. Asolekar, S.G. Joshi: Water Res. Vol. 39(2005), p.1123

[3] R. El-Mamouni, R. Leduc, S.R. Guiot: Appl. Environ. Microb. Vol. 479(1997), p.189

[4] G. Lettinga, A. Deman, A. Vanderlast, W. Wiegant: Water Sci. Technol. Vol. 27(1993), p.67

[5] H.Q. Yu, J.H. Tay, H.H.P. Fang: Water Res. Vol. 35(2001b), p.1052

[6] Y.B. Zhang, Y.G. Ma, X. Quan, Y.W. Jing, S.C. Dai: Chem. Eng. J. Vol. 155(2009), p.266

[7] APHA (American Public Health Association), AWWA (American Water Works Association), and WEF (Water Environment Federation). Standard methods for the examination of water and wastewater (20th ed.). Washington DC, USA(2005).

DOI: 10.1002/j.1551-8833.1932.tb18153.x

[8] M.M. Ghangrekar, S.R. Asolekar, K.R. Ranganathan, S.G. Joshi: Water Sci. Technol. Vol. 34(1996), p.421

[9] M.K. Tiwari, S. Guha, C.S. Harendranath, S. Tripathi: Appl. Environ. Microb. Vol. 71(2006), p.145

[10] G. Lettinga, L.W. Hulshoff Pol, S. Homba, P. Grin, P. Jong de, R. Roersma, P. Jspeert. The use of a floating settling granular sludge bed reactor in anaerobic treatment, in: van den Brink W (Ed.), Proceedings of the European Symposium on Anaerobic Waste Water Treatment, Noordwijkerhout, The Netherlands, (1983), p.411

DOI: 10.2166/wst.1983.0166

[11] L.W. Hulshoff Pol, S.I. Castro Lopes, G. Lettinga, P.N.L. Lens: Water Res. Vol. 38(2004), p.1376

DOI: 10.1016/j.watres.2003.12.002

[12] W. De Zeeuw. Granular sludge in UASB reactors, in: Lettinga G, Zehnder A, Grotenhuis J, Hulshoff Pol L (Eds.), Granular Anaerobic Sludge: Microbiol Technol, Pudoc, Wageningen, The Netherlands, (1987), p.132