All transfer stations in Tehran were analyzed
with respect to their potential for optimization.
There are 12 active transfer stations in the Tehran
metropolitan area that handle the most part of the
household waste generated in the city. A negligible
amount of waste is carried directly to the landfill
which is currently located in Kahrizak. In table 1
the coding of transfer stations and their distance
to the current Tehran landfill is mentioned (OWRC,
2001). As it can be deduced from Table 1 the
transfer stations are scattered all over the city and
so the distances between transfer stations and the
landfill vary a lot (OWRC, 2003).