The solid wastes have their physics and chemical attribute: granularity, shape, color, density, friction factor, magnetic, electrical property and wettability. Base on different attribute, the separation method is different.
1. Sorting: base on optical property and radiation property.
2. Reselection: base on difference of density.
3. Flotation: base on the physics and chemical attribute.
4. Magnetic Separation: base on the difference of magnetic.
5. Electric Separation: base on the difference of electrical conduction.