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Description of the process for working the wet fraction
Description of the process for working the dry fraction
In the section dedicated to the collection of wet U.S.W., the user will feed the material in through a hatch that is automatically opened with a special magnetic card. After being weighed, the material is dumped into a grinder that reduces the plastic to sufficiently homogeneous dimensions (18-20 mm).

The material is then placed on a conveyor belt fit with a magnetic separator to remove ferrous and non ferrous materials by drawing off the ferrous material and dropping it on a special conveyor and ejecting the other materials such as aluminum.

After the ferrous and non ferrous materials have been eliminated, the wet and dry materials are sent to a tank where the light parts that float are separated out using water and then taken up by an aspirator which eliminates the excess water and sends the dry material to storage. When full, the material is withdrawn and compressed into cylinders.
Production of cylinders of cellulose and waste-derived fuel

The parts of the wet wastes ― which, by force of their specific weight, will settle at established heights ― will be sucked up by a 1.1 kW vertical Borsetti pump and set into storage. At the moment of pick-up, they will undergo the same treatment as the dry material (uptake, compression and placement in specific storage).

The flow chart for the process is given below:



After an initial wash, the steel undergoes a second wash, subsequent grinding and then another wash before being sent to storage. The steel is picked up when the storage is 4/5 full.
This same process is followed for the aluminum which, after first grinding, is sorted, washed, minced, rewashed, sent to storage and picked up when the storage is 4/5 full.
All heavy materials, glass, pottery, heavy plastics, sand, soil, etc. settle to the bottom of the tank.
The lighter parts are separated by agitating the waters with a submerged spray and, at the same time, sucked up with a submerged, split impeller pump and/or a vacuum generator motor.
This operation only picks up the materials that are lighter than stones, glass and pottery.
The water and the lightest parts deposited on the bottom are sent to the dry bin. This operation is repeated at least 3 times, each time eliminating the moisture form the small container.
In the last phase only stones, glass and pottery remain at the bottom of the container. They are picked up when the volume reaches the setpoint defined by the computer and before they plug the pipe that takes up semi-heavy materials (heavy, dry part).
The excess water from the dry material storage is removed through an overflow fit with a filter.
The overflow pipe is fit with a filter that cleans itself by blowing air outward to stop any plugging of the filter holes.
The pipe is connected to the center of the container.

The excess water from the wet material is removed by a pump that draws the water off from the surface after the semi-heavy wet material has stabilized at average height. The water taken up is reused for the subsequent waste wash, for the semi-solid material agitation and for picking up the solids.



Reduction of volume and extremely clean material:
  

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