Enhancement of Methane Productivity of Anaerobic Reactors of Wastewater Treatment Plants

Authors: Aare Kuusik, E. Loigu, O. Sokk, Argo Kuusik

Abstract:

This paper describes technological possibilities to enhance methane productionin the anaerobic stabilization of wastewater treatment plant excess sludge. This objective can be achieved by the addition of waste residues: crude glycerol from biodiesel production and residues from fishery. The addition ofglycerol in an amount by weight of 2 – 5% causes enhancement of methane production of about 250 – 400%. At the same time the percentage increase of total solids concentration in the outgoing sludge is ten or more times less. The containment of methane in biogas is higher in case of admixed substrate.

Keywords: Enhancement of methane production, fishery residues, waste glycerol

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1072355

References:

[1] Mousdale, D. M. (2008) Biofuels: biotechnology, chemistry, and Sustainable development, CRC Press, USA, 2008, p.328
[2] Miele, S., Bargiacchi,E. (2008) Chemistry Today (26) p. 30-31
[3] Hutňan, M., Koles├írov├í, N., Bodik, I., ┼ápalkov├í, V. and Lazor, M. (2009). Possibilities of anaerobic treatment of crude glycerol from biodiesel production, 36th International Conference of Slo-vak Society of Chemical Engineering, May 25 - 29, Slovakia
[4] Fountoulakis, M. P. (2010). Co-digestion of sewage sludge with glycerol to boost biogas production. Waste Management (30), 1849-1853.