INVESTIGATION OF GREENHOUSE GAS EMISSIONS FROM DISSOLVED AIR FLOTATION PROCESS

Industrial wastewater treatment facilities have been regarded as one of the greenhouse gas (GHG) emission sources. Dissolved air flotation (DAF) process which is carried out to remove fats, oil and grease and carbonaceous materials in a dairy wastewater treatment plant is considered as one of the major GHG generator sources. This paper investigated the GHG emissions of a DAF unit operated in an industrial wastewater treatment facility. The direct emission was estimated from FOG and organic materials removal from wastewater. A new estimation tool was developed, in this study. The indirect emission was figured out from electricity and chemical depletion for DAF process. This study aimed to estimate the greenhouse gas emissions from a dissolved air flotation tank using a new developed model based on IPCC approach. The results showed that electricity depletion was the main resource of the GHG emissions in DAF unit with the value of 3752.35 kg CO2e/d. For the reduction of greenhouse gas emission, electricity consumption should be taken under control.

Keywords:

greenhouse gas, wastewater treatment plant, dissolved air flotation, direct emission indirect emission.,

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[1] IPCC. Climate Change 2014 Mitigation of Climate Change, Cambridge University Press, Cambridge, England, 2014.
[2] Kyung, D., Kim, M., Chang, J. & Lee, W. (2015). Estimation of greenhouse gas emissions from a hybrid wastewater treatment plant. Journal of Cleaner Production, 95,117–123.
[3] Corominas, L., Flores-Alsına, X., Snip, L. & Vanrolleghem, P.A. (2012). Comparison of different modeling approaches to better evaluate greenhouse gas emissions from whole wastewater treatment plants. Biotechnology and Bioengineering, 109(11), 2854–2863.
[4] Yapıcıoğlu, P. (2018). Greenhouse Gases Emissions Minimization of Wastewater Treatment, MSc thesis, Harran University Graduate School of Natural and Applied Sciences Department of Environmental Engineering, 96pp.
[5] Metcalf & Eddy, (2014). Wastewater Engineering: Treatment and Resource Recovery 5th ed, Boston, USA, McGraw-Hill.
[6] Parravicini, V., Svardal, K. and Krampe, J. (2016). Greenhouse gas emissions from wastewater treatment plants. Energy Procedia, 97, 246–253.
[7] Yapıcıoğlu, P., & Filibeli, A. (2017). Proceedings from IATS '17: The 8th International Advanced Technologies Symposiu. Elazığ, Turkey.
[8] Falletti, L., Conte, L., Zaggia, A., Battistini, T. & Garosi, D. (2014). Food industry wastewater treatment plant based on flotation and MBBR. Modern Environment Science and Engineering, 1, 562-566.
[9] Pereira, M.S., Borges, A.C., Heleno, F.F., Squillace, L.F.A. & Faroni, L.R.D. (2018). Treatment of synthetic milk industry wastewater using batch dissolved air flotation. Journal of Cleaner Production, 189, 729-737.
[10] Castillo, A., Vall, P., Garrido-Baserba, M., Comas, J. & Poch, M. (2017). Selection of industrial (food, drink and milk sector) wastewater treatment technologies: a multi-criteria assessment. Journal of Cleaner Production, 143, 180-190.
[11] Behin, J. & Bahrami, S. (2012). Modeling an industrial dissolved air flotation tank used for separating oil from wastewater. Chemical Engineering and Processing, 59, 1– 8.
[12] Edzwald, J.K. (2010). Dissolved air flotation and me. Water Research, 44, 2077-2106.
[13] American Public Health Association, American Water Works Association, (1999). Standard Methods for the Examination of Water and Wastewater, USA.
[14] IEA, 2016. World Energy Statistics 2016. Key world energy statistics http://www.iea.org/statistics/topics/energybalances/.
[15] Ashrafi, O., Yerushalmi, L. & Haghighat, F. (2013). Application of dynamic models to estimate greenhouse gas emission by wastewater treatment plants of the pulp and paper industry. Environmental Science and Pollution Research, 20(3), 1858–1869.
[16] Yerushalmi, L., Ashrafi, O. & Haghighat, F. (2013). Reductions in greenhouse gas (GHG) generation and energy consumption in wastewater treatment plants. Water Science and Technology, 67( 5), 1159–1164.
[17] Masuda, S., Suzuki, S., Sano, I., Li, Y.Y., Nishimura, O. (2015). The seasonal variation of emission of greenhouse gases from a full-scale sewage treatment plant. Chemosphere, 140, 167-173.
[18] Rodriguez-Caballero, A., Aymerich, I,, Poch, M., Pijuan, M. (2014). Evaluation of process conditions triggering emissions of green-house gases from a biological wastewater treatment system. Science of The Total Environment, 493, 384-391.
[19] Shahabadi, M.B., Yerushalmi, L., Haghighat, F. (2009). Impact of process design on greenhouse gas (GHG) generation by wastewater treatment plants. Water Research, 43(10), 2679-2687.