A very interesting project has been carried out by Lombardy region: the creation of a water phyto-depuration plant whose final stage consists of plant farming for the production of biomass to produce energy. The creation of a phyto-depuration installation is based on the “reconstruction” or “creation” of wet areas for the treatment of waste water (urban waste). In this systems, pollutants are removed by a combination of chemical, physical and biological processes, among which plant sedimentation, precipitation, absorption, assimilation and microbial activity are the most efficient activities. With this project plants are used to produce biomass in order to produce energy: an ecological and sustainable cycle that allows to save fossil fuels.

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