EGREEN system patented

EGREEN system patented

The proposed Comprehensive Treatment System is basically to recover and to segregate from the organic fraction of MUNICIPAL SOLID WASTE (MSW) all recyclable materials by optical separators based on Artificial Multispectral Vision and complementary technologies.

This system can be implemented with two variations:

Municipal Solid Waste (MSW) is deposited in a single container, i.e. the organic fraction and the recyclable materials are mixed.

Or, the urban collection system MSW is based on two containers: one of them recyclable materials mainly are deposited, and the other for the organic fraction.

The first of these is simpler from the point of view of urban collection but its profitability is lower. The second involves a greater effort by the municipalities in terms of awareness campaigns, logistics, etc. However, this effort is richly rewarded because a system whose profitability is higher is obtained.

To recycle we must first recover recyclable materials from flow MSW (option 1) and then separate them by composition. Both operations are performed automatically by means of optical sorters. In variant 2 recyclables are already separated at source as well as the organic fraction, thanks to the availability of two containers for the collection of MSW.

The materials that can be recovered and separated now automatically are:

Ferrous metals

Metals once recovered and separated into ferrous and non-ferrous metals, can be sold to companies engaged in the manufacture of metals.

Non-ferrous metals

Metals that do not contain iron in appreciable amounts, such as aluminum, copper, nickel, titanium, precious metals ...


The separation is carried out by means of a pneumatic blowing system controlled by a machine vision system. Glass can be separated by color as well as removing the impurities with the optical sorters machines.

Plastics and Packaging

The separation is performed by a blowing system controlled by a multispectral machine vision system processing the spectrograms that allows the separation of plastics by chemical composition like PET, HDPE, LDPE, PP, etc.

Paper and paperboard

They are processed in a dedicated line, with optical separation, of cardboard, paper and the latter in its varieties of white paper, magazine paper ...

Comprehensive treatment system of MSW

Comprehensive treatment system of MSW

Comprehensive treatment system of MSW

Comprehensive treatment system of MSW


The disposal of MSW in landfills is better than doing nothing, but it is not a sustainable solution as CH4 methane emissions and leachate generated by organic matter, pollute the air and surface waters respectively. There is another important factor: we throw out the economic value of all components of the MSW.


There are currently 3 types of incineration:

1.Traditional Incineration for the production of electricity.

2.Incineration in low oxygen contens atmosphere to generate syngas which is a mixture of H2 + CH4 + CO to produce electric power fundamentally.

3.Technology is the latest application that uses temperatures between 2000 – 3000 ºC.

The three are considered incineration systems by the European Community and the Environmental Protection Agency EPA of USA with production of toxic pollutants and carcinogens such as dioxins and furans, in addition to producing toxic ash and heavy metals contamination.

Besides being a polluting and dangerous system for Environment and public health, it is a system that requires an investment of 2 to 3 times higher than the patented EGREEN system, for the same processing capacity in Ton MSW/year and also a 'gate fee "or treatment rate from 80 to 125 euros/Ton, versus only 15 to 25 euros/Ton required by EGREEN system.

(*) Según la normativa de la Comunidad Europea y la Environmental Protection Agency EPA de USA.


If instead of disposing the MSW in landfills and/or incinerate it, we separate its components and recycle them, MSW goes from being a problem, to become an environmental solution to pollution problems, as well as a source of raw materials generating significant incomes.

If we follow the above process the MSW are no longer waste, but raw materials with significant economic value to produce new raw materials.

Our environmentally and economically sustainable proposal, involves the application of new technologies for the treatment of Municipal Solid Waste, in order to solve an environmental problem while generating wealth and employment.


Application of new technologies


By optical spectroscopic separators based on multispectral vision technology, it is also possible to recover plastics, separated from each other by chemical composition.


Spectroscopic multispectral vision technology



· These plants generate the following income:

· Revenue from the sale of recyclable materials recovered as metals, glass, plastics, paper and cardboard.

· Biofertilizer sales revenues for agricultural use and/or gardening.

· Carbon credit income (saving CO2 emissions).

· Revenue from the sale of electricity Kwh.

· Electrical energy savings for selfconsumption.

· Savings of thermal energy selfconsumption.

· Savings from the reduction in tonnage disposed to landfill.

From the economic point of view, the project is profitable and typically, the payback period of these Treatment Plants is between 7-8 years.




Where we are

Igualada - Barcelona - SPAIN


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