The treatment of baker’s yeast wastewater by an up flow anaerobic sludge blanket (UASB) reactor

Abstract

The objective of the research is to study the ability of baker's yeast wastewater (BYW) treatment by a Up Flow - Anaerobic Sludge Blanket (UASB) reactor. The effect of the temperature of BYW on the efficiency of treatment in a UASB was investigated and the experiments showed that it is possible to achieve good removal efficiency of chemical oxygen demand (COD) (10200-16320) mg L^-1 when the temperature of BYW is about (35±2)°C and hydraulic retention time (HRT) = 24 h. The removal efficiency fit with temperature value of wastewater in UASB reactor for the following values of temperature of (11±2; 16±2; 26±2; 26±2; 31±2; 35±2) °C. The removal efficiencies of COD were: (36.6%; 37.9%; 43%; 44.2%; and 48.8%) respectively. The effect of changing the values of HRT on the efficiency removal at a temperature (35±2) °C value was investigated. The experiments illustrated that it is possible to achieve good removal efficiency for high concentrations of COD when the temperature of the BYW is fixed at (35±2) °C and HRT>=24 h. The removal efficiency fits with HRTs values. For the following values of HRTs: (18; 24; 30; 36) h, the removal efficiencies of COD were: (32.9%; 48.8%; 48.95%; 51.3%) respectively.

Keywords

• Anaerobic biological treatment,UASB reactor

References

1. [1]. A. Saghir, “Industrial wastewater treatment in Arabic world,” Arabic scientific publishers, Lebanon, 2017. [2]. R. Rajakumar, T. Meenambal, P.M. Saravanan, P. Ananthanarayanan, ”Treatment of poultry slaughterhouse wastewater in hybrid upflow anaerobic sludge blanket reactor packed with pleated poly vinyl chloride rings,” Bioresource Technology. Vol. 103 (1), pp. 116–122, 2012. [3]. E. Gengec, M. Kobya, E. Demirbas, A. Akyol and K. Oktor, “Optimization of baker's yeast wastewater using response surface methodology by electrocoagulation,” Desalination. Vol. 286, pp. 200–209, 2012. [4]. Y. Zhou, Z. Liang and Y. Wang, “Decolorization and COD removal of secondary yeast wastewater effluents by coagulation using aluminum sulphate,” Desalination. Vol. 225, pp. 301-311, 2008. [5]. A. Saghir. and S. Hajjar, “Anaerobic treatment for high organic load industrial wastewater by UASB reactor,” Research Journal of Aleppo university .Engineering series. Vol. 58, 2007. [6]. T. Ciftci. and I.Oztiirk, “Nine years of full-scale anaerobic-aerobic treatment experiences with fermentation industry effluent,” Water Science and Technology. Vol. 32, No.12, pp. 131-139, 1996. [7]. N. Deveci and G. Çiftçi, “A mathematical model for the anaerobic treatment of Baker's yeast effluents,” Waste Management. Vol. 21, No.1, pp. 99-103, 2001. [8]. S.K. Khanal, J.C. Huang, ”Effect of high influent sulfate on anaerobic wastewater treatment,” Water Environment Research. Vol. 77, No. 7, pp. 3037-3046, 2005. [9]. K.V. Lo, A. Chen and P.H Liao, “Anaerobic Treatment of Baker's Yeast Wastewater:II.Sulfate Removal,” Biomass: of British, Vol. 23, No. 1, pp. 25-37 ,1989. [10]. M. Koplimaa, A. Menert, V. Blonskaja, T. Kurissoo, S. Zub, M. Saareleht, E. Vaarmets and T. Menert, ”Liquid and gas chromatographic studies of the anaerobic degradation of baker’s yeast wastewater,” Procedia Chemistry. Vol. 2, No.1,pp. 120–129, 2010. [11]. M.E Ersahin, H. Ozgun, R.K. Dereli and I. Ozturk, “Anaerobic Treatment of Industrial Effluents:An Overview of Applications,” Available: https://www.intechopen.com/books/waste-water-treatment-and-reutilization/anaerobic-treatment-of-industrial-effluents-an-overview-of-applications, DOI: 10.5772/16032, 2011. [12]. E.W. Rice, “Standard Methods for the Examination of Water and Wastewater,” 22nd Edition, American Public Health Association, American Water Works Association and Water Environment Federation, Washington DC, USA, 2014. [13]. M.M. Ghangrekar, ”Design of an UASB Reactor,“ Available. https://docslide.net/documents/design-of-an-uasb-reactor.html, 2005. [14]. S. Sung, “Anaerobic Water Treatment Technologies,” Accessed: http://www.wpeiic.ncku.edu.tw/resources/Aeaerobic%20Water%20Treatment.pdf, (2008). [15]. M.M. Ghangrekar, ”Design of an UASB Reactor,“ https://www.scribd.com/document/86683056/Design-of-an-UASB-Reactor, 2002. [16]. L.F Burton and G. Tchobanoglous,“Wastewater Engineering-Treatment- Disposal- Reuse,” 3rd Ed, Metcalf and Eddy. Inc ,McGraw- Hill, New York, 1991