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What happens at the recycling centre? (MRF)

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Definition:

it’s the waste that does not differentiate from the other.

For example they are part of it:
• CD/DVD
• Rubber objects
• Synthetic sponges
• dust
• waste composed several different materials (es. brush)
• Packaging
Usually everything that can not go into the separate collection containers

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The bags of the undifferentiated contain mixed waste for this purpose are brought to a sorting center, where they follow a path to divide the single type of waste.
Waste is put on a conveyor belt where organic waste is removed, Then a machine vibrating brings to the surface the paper that will be collected, With a magnet the metal parts will then be gathered, the plastic bottles will be selected (via a sensor) and collected will finally only be the glass.
At the end of the sorting process we will have a separate collection that will be sent to the individual recycling centers.

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What happens at the recycling centre? (MRF)

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CD and DVD are made for over 90 percent by polycarbonate a thermoplastic polymer obtained from carbonic acid, it is a primary second material much request for it’s high production costs of the new material and the ability to retain much of the property even after recycling, with the recycling of discs, it is possible to save non-renewable matter: petroleum.

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Incineration method

Solid waste control measures

The main purpose of solid waste management is to minimize the adverse effect on the environment. The steps involved are:

o Collection of solid wastes
o Disposal of solid wastes
o Utilization of wastes

Collection of wastes

• Collection of wastes includes gathering the waste,transporting it to a centralized location, and then moving it to the site of disposal.
• The collected waste is then separated into
• Hazardous
• Non-hazardous materials.

Disposal of solid wastes
• Before the final disposal of the solid wastes,it is processed to recover the usable resources and to improve the efficiency of the solid waste.

o The main processing technologies are
•Compaction
•Incineration
•Manual separation.

Utilizzation of wastes

•The solid wastes can be properly utilized to gather the benefits such as:

Conservation of natural resources
Economic development
Generate many useful products
Employment opportunationes
Control of air pollution

Incineration

Incineration is the process of control and complete combustion, for burning solid wastes. It leads to Energy recovery and destruction of toxic wastes.

In these plants rhe recyclable material is segregated and the rest of the material is burnt.

o Example: waste from hospitals

o In some newer incinerators designed to operate at temperatures high enough to produce a molten material, it may be possible to reduce the volume to about 5% or even less

Incineration can be useful for …

•STERILISATION OF WASTE: this is of of primary importance in the incineration of clinical or biomedical waste. Incineration of solid wastes will also ensure destruction of pathogens prior to final disposal.

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THOR it's a technology developed by the society CNR.
The system THOR it serves for transforming the urban solid refusals, with a process of refinement, in dust that then you will be used for the combustion.
This invention helps the state to save much money and to recover the spaces that you before were used for putting the refusals to exploit them in other ways.