Working group for Mechanical-Biological Treatment

The Working Group for the Mechanical-Biological Treatment is formed by Prof. Francesco Di Maria and by Ing. Roberto 03
Damiano, who are the responsible respectively for Dipartimento di Ingegneria and GESENU s.p.a., as well as others collaborators from Dipartimento di Ingegneria and GESENU s.p.a.

For several reasons, the amount of waste that will continue to be conveyed in a undifferentiated or mixed way is yet an important "mine" from which other amounts of recyclable materials could be extracted.

For this reason one of the activities of the TreatmenWorking Group for the Mechanical-Biological Treatment is to analyze the possibility to extract further recyclables trough the Mechanical Selection of the undifferentiated or mixed waste by using advanced technologies borrowed from industrial modern systems, based on optical recognition, dimensional separation, gravimetric separation, and other technologies able to "recognize" and to separate a lot of different materials that are in the fluxes of waste. For this aim, several experimental tests are in progress at the Mechanical Selection facility of GESENU s.p.a. to evaluate the qualitative and quantitative performances, of the implemented facility, in different waste flux separation, sorted by material and ready  to be recycled.

Another important fraction in waste is the organic fraction that consists in food waste and green waste. This fraction represents about one third of the total amount of waste produced. If this fraction is not well managed, it could be a considerable danger for environment.

The Working Group for the Mechanical-Biological Treatment is working also about the benefits that could derive from the correct management of this type of urban waste, trough several experimental tests performed at the LAR5 laboratory of Dipartimento di Ingegneria and at GESENU s.p.a. The aim of these tests is to evaluate as the combination of anaerobic biological processes, to produce energy, and  aerobic processes, to produce fertilizers, could also lead to enhance the concentration of organic carbon in final compost. The use of the final compost on land allows to operate the reconstitution of the carbon-sink.