How to carry out solid waste treatment for selective recycling

With the increase of products produced in industries, from food to other items for personal or industrial use, also increased the number of disposable packaging and other types of solid waste in the form of garbage.

But with the increase in the production of these wastes, there has also been an increase in the knowledge of how to treat these wastes so that they are reused and have a reduced impact on the environment.

What we are going to talk about: Recycling

The recycling of materials such as metals, glass, paper, plastics and organic waste aims to allow the reuse of these solid wastes for the manufacture of new materials, generate energy or compost.

Recycling, in addition to promoting resource savings through its reuse, also promotes a large decrease in the amount of waste disposed of in landfills, garbage dumps, avoiding the burning of garbage, thus reducing the impact on the environment.

Thus, recycling is a very important socioeconomic factor. The selective collection for example is carried out by several companies around the country, thus generating a greater number of jobs, also can be carried out the sorting of solid waste from the conventional collection, separating the different types of waste for the future recycling.

What can be recycled?

It is possible to recycle a wide variety of materials such as metals, glass, plastics, wood, foam, paper, pruning debris and others.

These residues can come from factory remnants of production, residential garbage or even pruning of trees within cities.

What are the first steps to proceed with recycling?

First the waste must be separated by type, this can be done through the selective collection or through waste sorting plants.

Thus the waste is separated from the tailings and classified by type, allowing the recycling of the different types of materials.

After this, each type of waste will receive a different type of treatment:


The glass has labels and covers removed, leaving the glass as pure as possible for the next step. Then the glass is separated by color, transparent, green and amber. After this the glass is shredded until reaching the ideal granulometry for its reuse. Then this shredded material can be melted and used to produce new glassware.

A major advantage of glass recycling is that it can be completely reused, in this case 10 kg of shredded glass will produce 10 kg of new glassware.

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Metal is another material that can be 100% recycled and reused. Today, a large amount of metallic waste is produced, such as juice cans, soft drinks and food, damaged electronics, household appliances, factory waste and others.

First the metal waste is separated by type and characteristics such as ferrous metals, copper, aluminum, bronze, etc. and then can be shredded and melted directly, or even transformed into briquettes for melting on a larger scale.

Plastic Products

Coming from the large volume of packaging, it can be shredded, transforming the plastic into raw material again, and then it can be used for the production of new plastic articles or even in the energetic burning, taking advantage of the calorific power of plastic.


Wood has its impurities removed, such as stones and metals, and then wood from construction debris, pallets and other sources can be chipped to produce wood chips, a material with a much higher calorific value than ordinary firewood. It can then be used in the burning in boilers and furnaces.


It can be shredded to achieve a lower particle size to be used as a filler for various applications, or even can be used in the production of polyurethane resin, which can be used in floor and concrete applications.


Coming from newspapers, notebooks, business papers, packaging and others can be fragmented for the production of recycled paper.

The recycling of paper is of extreme importance to the environment, since it is necessary for its manufacture the use of trees. Thus, with recycling it is possible to reduce the cutting of trees for the production of paper, benefiting the environment and consequently the population.


Coming from urban and rural areas, it can be completely reused as a soil cover or by composting. First the organic waste is chipped by the use of a brush chipper, which can perform this operation directly at the pruning site, reducing the volume of the material by up to 80%, requiring only one transport vehicle to carry the chipped material where it would take 8 vehicles for the transport of the raw material.

After this, the material produced can be applied in organic composting, producing a rich organic fertilizer for the soil, generating a great saving by reducing or even eliminating the need to buy artificial fertilizers.

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But what are the equipment needed for recycling?

First, a waste sorting plant is required, so that they can be categorized by type and then sent to a waste disposer, where a suitable shredded must be used for the different types of material. Then the resulting material can be routed to its beneficiation.

What are the advantages of recycling?

Recycling allows the reuse of solid waste in several sectors such as industrial and urban sources, reducing the volume of waste deposited in landfills, promoting a significant improvement in the health of the environment, consequently improving the quality of life of the entire population.


Recycling, beyond a necessity, is an act of citizenship. We must all realize that it is only with the participation of the whole society that movements in favor of the rational use of energy and matter can become reality, thus improving living conditions on our planet.