Waste Processing and Separation

Goals

Describe the most common waste processing techniques.

Develop process flow charts for material separation.

Processing and Separation

Processing is used to alter the physical characteristics of the waste stream or to remove particular components from the stream

Separation is used to permit more efficient processing of waste components

Baling

Processing Operations

StoringConveyingCompactionSize ReductionPulpingRoll CrushingGranulating

Tub Grinder

Horizontal Grinder

Vertical Hammermill Shredder

Inside a Horizontal Hammermill Shredder

Separation Processes

Picking ScreeningAir ClassificationMagnetsOptical separationEddy currentFlotation

Hand Picking

Trommel Screen

Air Knife Air Classifier

Separating Steel Cans from Al Cans Using a Magnet

Optical Glass Sorter

Optical Glass Separator

MRF Feed

Conveyers

Commingled MSW

Collection vehicle

Receiving Areas

Front-end Loader Bulky itemsManual removal White goods

of wastes Cardboard

Front-end Loader, conveyor system

Shredding

Conveyor

air to atmos. Air Classification Heavy fraction conveyorMagnetic Separation Ferrous metals

Pneumatic Light fractionconveyor Residue to

Dust Cyclone separator landfill

collection ConveyorMainly

organic fraction

Dust

Return to Home Page

Return to Home Page

Last updated July 2007 by Dr. Reinhart