Conversion of sludge from urban and industrial wastewater treatment plants into energy, fuel, organic soil conditioners for use in agriculture and inert products in the nature of ash, vitrified ash, char, clinker, minerals, inorganic sludge byproducts and organic sludge byproducts

Equipment and installations for treating sludge from sewage stations for urban and industrial wastewater, namely, sludge dehydration equipment in the nature of vacuum filters, belt pressure filters, filter presses, sand filters and dewatering machines, all of the foregoing for wastewater