(best examples and good practices) on household organic waste ...

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purchased by AGA <strong>and</strong> distributed to Stockholm. (Chemical Engineering <strong>and</strong>
Technology department KTH, 2007)
Picture 41.: The fast filling station for busses in Västerås
(Chemical Engineering <strong>and</strong> Technology department KTH, 2007)
The residue produced is KRAV-labeled <strong>and</strong> accepted in organic farming
according to EC-regulations. It is used as agricultural fertilizer by farmers, who
are also part of the Växtkraft project.
The idea to cooperate with the farmers started in the end of 1980s when
politicians <strong>and</strong> employees realized that a new treatment system for the organic
waste was needed. At the same time the local farmers considered an
improvement in the soil structure, as the region has a very sensitive soil.
Together with the Agricultural University in Uppsala the idea of digesting ley
crops to produce fertilizer <strong>and</strong> biogas was examined. The cooperation between
the farmers <strong>and</strong> Vafab started in the middle of the 1990s. Plans to build an
organic treatment plant for co-digestion of agricultural crops <strong>and</strong> household
waste started. (Chemical Engineering <strong>and</strong> Technology department KTH., 2007)
A condition for the Växtkraft project ( Picture 42) is that the digestion residuals
are accepted as a fertilizer. The farmers does not accept the residuals if the
purchasers of the crops does not. Therefore the farmers must be ensured the
purchasers accept the digestion residuals. A lot of work has been done to
guarantee that the residuals produced are accepted as fertilizers for
conventional farming, as well as organic farming. The participation by LRF (the
National Federation of Swedish Farmers) has been important for the