3.1. Three alternative scenarios for future in Kolari contrasted
with the status quo
The prevalent situation in Kolari is thatthe mixed waste is transported
to the local waste transfer station where the unsorted MSW
is compressed and packed to containers and transported 187 km to
landfill in Tornio (yellow arrow on Fig. 5). As the bio-waste collection
for composting in Kolari is only seasonal and regional, most of
the bio-waste is in the mixed waste fraction and taken to Tornio.
Due to the tightening legislation,theprevalent situationisnotlikely
to be continued.
In Scenario 1, all the MSW, including bio-waste, would be
transported 317 km to incineration plant with annual capacity of
120 000 t of feedstock in Oulu (blue arrow on Fig. 5). In this Scenario,
the nutrients of bio-waste would be lost in the incineration
process and the transportation distance would be longer than the
status quo.
In Scenario 2, bio-waste would be transported 165 km to
Rovaniemito be treated in larger-scale AD plant with annual capacity
of some 4000–5000 t of feedstock (green arrow on Fig. 5). In this
Scenario, bio-waste would be collected e.g. to the large containers
in the transfer station, from which they would be transported to
Rovaniemi. Nutrients would be utilized but they would be used in
Rovaniemi area, possibly for forestry purposes.
In Scenario 3, bio-waste would be collected and treated locally
in the small-scale AD plant with annual capacity of 1000–2000 t of
feedstock in Kolari. In this case, the bio-waste would be collected
and transported to theAD plant with garbage truck. The transportation
distances would be short and the nutrients of bio-waste as
digestate would be utilized locally in Kolari area.