Sammanfattning

In all the Nordic countries waste management strategies focus on waste minimization and on better utilisation of the resources in the waste. In all countries better handling of municipal waste is in focus, as it is a significant waste fraction with many unused potentials. In the resent years a number of full-scale systems and projects with source-sorting of the organic fraction of municipal solid waste have been made in order to get a better management. Composting and anaerobic digestion is used for the treatment of the organic waste but to a very different extent in the Nordic countries. Evaluation of pilot experiments and permanent systems has shown that the economy in the source sorting is very dependent on the collection system (Jørgensen, O. and Jansen, J.l.C, 2003) and that energy production (in case of anaerobic digestion) is significant for the environmental evaluation of the waste handling systems (Jansen J.l. C. and Christensen, T.H, 2003). A Danish project including four full-scale and large scale experiments has showed that the environmental benefits from household sorting is marginal under Danish conditions if the alternative to sorting and anaerobic digestion of the organic fraction is incineration with co-generation of heat and power. In contrast the benefits from digestion of the organic fraction is significant if the alternative do not include co-generation of energy and heat (Jansen J.l.C. and Christensen, T.H., 2003). In some international evaluations composting of source-sorted municipal organic waste is pointed out as an economical and environmental friendly handling strategy and internationally composting is one of the most widespread technologies for treatment of the organic fraction of municipal solid waste (Hoog, D, 2002). Local conditions will always play an important role in systems for handling of municipal waste where collection system and strategy, treatment method and final disposal and utilisation of the products and residues have to be taken into account. Further national conditions and priorities have to be considered too. A tool for support of local decisions about handling of the municipal organic solid waste should consequently be developed in order to cover the spectrum of technological solutions available today and further include the local conditions and priorities. The aim of the present project is to develop a computer based decision tool for Nordic municipalities with a wish to evaluate environmental consequences of systems for collection and treatment of the organic fraction of the municipal solid waste. The tool shall be applicable to Nordic conditions and the data requirement realistic compared to the possibilities of the individual municipalities to get sufficiently safe data without significant costs. The decision tool is made in collaboration between Swedish and Danish researchers. The group has together and individually made a lot of projects related to collection, treatment and final utilisation of the organic fraction of source-sorted municipal organic solid waste in national projects as well as in Swedish/Danish co-financed projects. Further group members are involved in the development of the elaborated Life Cycle Assessment tools for waste handling that are under constant development in Sweden and Denmark. The project is financed by the Nordic Council of Ministers and a steering committee is established with members from the Nordic Environmental Protection Agencies. Further a resource team with members from the Nordic Waste organisation is connected to the project

Publicerad i

Biowaste
2007, nummer: 2007:602ISBN: 978-92-893-1615-6
Utgivare: Nordic Council Ministers

SLU författare

• Jönsson, Håkan

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Miljö- och naturvårdsvetenskap


Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/18143