In 2018, approximately 4.13 million cubic metres of water was consumed: 4 million cubic metres of sea water and 0.13 million cubic metres of freshwater
Sea water is used to cool auxiliary systems in the liquefied natural gas regasification plant
Fresh water is used primarily for office use, firefighting equipment and the irrigation of green areas.
Water procurement and discharge in the activities of Snam represents a relatively insignificant environmental factor, in terms of both the quantities used and the type of discharges. In 2018, approximately 4 million cubic metres of sea water (the same amount as in previous years) and 0.13 million cubic metres of fresh water were consumed.
Sea water is used to cool auxiliary systems in the liquefied natural gas regasification plant, fresh water drawn from wells is used to irrigate green areas, and water taken from aqueducts is reserved for office use and fire-extinguishing systems.
The extraction of fresh water fell by 23.5% compared with 2017.
Fresh water consumption 103 m3
Fresh water discharge 103 m3
With regard to water discharges, the sea water is released into the sea as it is, without any treatment, since it is only used for cooling circuits, while the waste water is channelled into the sewage networks (58% of the total) or discharged, after treatment, into the soil and into surface water bodies (42% of the total).
The upstream storage activities produced approximately 5,913 cubic metres of process water (+20.6% compared with 2017). Of all this water, 2,185 cubic metres were re-injected as it is, while another (3,728 cubic metres) were sent to a purification plant for treatment.
To control the discharge of domestic waste water in the gas compressor stations, phytodepuration plants were installed over the years at corporate sites away from the sewage networks. These phyto-purification plants eliminate discharge since waste water is treated and fully absorbed by planted vegetation following the separation of sedimentable solids. In 2018 a phyto-purification plant was installed in the Masera gas compression station, with this latest installation all the compression stations, except for the Messina compression plant, which is connected to the national sewage system, are equipped with phyto-purification plant systems.
09 April 2019 - 13:13 CEST