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Biowaste

Decision support tool for collection and treatment of source-sorted organic municipal solid waste

image of Biowaste

Waste management strategies focus on waste minimization and on better utilisation of the resources in the waste in all the Nordic countries. Better handling of municipal waste is in focus, as it is a significant waste fraction with many unused potentials. A tool for support of local decisions about handling of the municipal organic solid waste has been developed in order to cover the spectrum of technological solutions available today and further include the local conditions and priorities in the Nordic countries. The tool focuses on the most important environmental aspects without losing the national or global perspective. Further the tool is kept simple in order to secure that the necessary information can be provided locally.

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Anaerobic Digestion

Anaerobic digestion, or biogasification, has the purpose of producing biogas from organic household waste. This requires energy input (fuel, power and heat) and the yield depends on the organic content (VS) of the waste, the specific methane potential of the waste, and of the degradation ratio for VS for the given biogas plant. The degradation ratio defines how much of the methane potential that is obtained during digestion. Figure 14 shows an example of the needed data. Figure 15 shows the calculation of sediments and floating material that is removed prior digestion.

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