The configuration of a MRF processing line is critical to
the overall quality of the materials marketed. It depends upon numerous factors
including the types and quantities of materials to be processed, desired
processing rates, and required specifications for the end products. While no
two MRFs are identical, they generally employ common design principles and
sequencing in the configuration of equipment and labor.
MRFs are designed in three dimensional space, taking
advantage of height to facilitate materials handling and storage as well as
minimize the facility footprint. As a general rule, incoming materials are
elevated by conveyor belts to above-ground platforms where equipment and
personnel separate out materials. It is also known as waste sorting system. which
then fall into or are conveyed to interim storage bunkers. Recyclables are then
processed (i.e. baled, densified, etc.) and placed into storage prior to being
transported to markets. The major processing steps in a typical single stream
or dual stream MRF are described in the following paragraphs.