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World Waste Technologies, Inc has announced it has filed a provisional patent covering an energy self sufficient process for the treatment of municipal solid waste (MSW) into the production of mixed alcohols (including ethanol) through a synthetic gas and catalyst process. The process also includes the co-generation of renewable electricity …

Legislative Decree 22/97 (Italy) defined waste disposal as: storage on or in the ground; treatment in terrain (ex. Biodegradation of liquid waste or sludge in the soil); depth injection; lagoonage; dumping in landfills; disposal of solid waste in bodies of water except for immersion; immersion, including interment under the sea …

The definition of Waste in Italy is governed by Legislative Decree 22/97 that adopts European Directives 91/156 and 91/689. Waste is defined as any substance or object of which the holder disposes or has the intention to dispose or is obliged to dispose. Whether a substance qualifies as waste depends …

Thermal desorption is a physical separation process that does not involve the thermo-destruction of organic compounds but rather their volatilisation from the contaminated materials (soil, sludge, sediment). The contaminated terrain is heat-treated, at temperatures of between 200°C and 600°C, to convert the water and the organic pollutants it contains into …

This term refers to the maximum potential of a furnace, expressed in terms of calories/hour of waste fed into the furnace. Source: Courtesy of Ambiente, an Eni Group Company

This technique captures organic vapours present in the unsaturated zones of the terrain utilised in remediation. It includes a system to treat the gases captured. Source: Courtesy of Ambiente, an Eni Group Company

This is the tower in which combustion flue gasses are brought into contact with currents of liquid (water or water and soda) that absorb the acid pollutants (HCI, HF, SOX) Source: Courtesy of Ambiente, an Eni Group Company

Sedimentation takes place in tanks that are round or rectangular basins, made of concrete or iron, with a bottom that slopes slightly toward an area where sludge is directed by means of special sludge collectors. Sedimentation can take place at various phases of the wastewater treatment process. Normally, sedimentation takes …

Any substance that when introduced into the environment can alter the chemical, physical or biological characteristics of that environment, posing a potential risk to human health and the ecosystem is called a pollutant. Source: Courtesy of Ambiente, an Eni Group Company

In this type of treatment, the water is extracted and transported to treatment systems that are generally made up of activated carbons, bio-reagents and stripping towers. Source: Courtesy of Ambiente, an Eni Group Company