Perspectives for anaerobic waste treatment using dry fermentation (System BEKON) to reduce CO2 emissions illustrated by the practical example of the island of Phu Quoc / S.R.Vietnam

M. Wittmaier, S. Langer, M. Schädlich, D.N. Quynh, N.D. Cuong, B. Bilitewski, P. Werner, H. Wiesmeth, A. Karragiannidis
Institute for recycling and enviromental protection, DE

Keywords:

biogas, biowaste, residual waste, renewable energy

Abstract:

Within the EU-founded programme “EC-ASEAN Energy Facility” the project “RENEW” was carried though by scientific institutes of Vietnam, Greece and Germany. Aim of the project was the development of practice-oriented guidelines for conducting feasibility studies into the production of renewable energy from waste materials in ASEAN countries. Anaerobic waste treatment plants do not only provide a CO2 neutral energy source for the production of electricity, but also drastically reduce the level of methane emissions that would otherwise result from landfill. A further positive aspect of this method of waste treatment is the production of organic fertilizer, i.e. compost, from the fermentation residue. Also, the introduction of a waste management regime can prevent uncontrolled waste disposal and the resulting negative effects, including unnecessary emissions of greenhouse gases. As an example of decentralized energy production from domestic waste, a feasibility study was conducted for Phu Quoc (Vietnam’s largest island), but not connected to the national grid. Energy demand from the island’s 88,000 inhabitants, as well as from its growing tourist industry, cannot nearly be met by the current diesel generators, which, despite enormous subsidies. The study assumed a 500 kW dry fermentation plant for 15,000 Mg/a domestic waste.


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