In 2020, approximately 6.36 million cubic metres of water was consumed: 6.05 million cubic metres of sea water and 0.31 million cubic metres of freshwater
Sea water is used to cool auxiliary systems in the liquefied natural gas regasification plant and the same volume was discharged back into the sea, at a higher temperature (within law terms)
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. Sea water and fresh water are used in the production process and offices respectively, resulting in total consumption of approximately 6.36 million cubic metres in 2020 (6.05 million cubic metres of sea water and 0.31 million cubic metres of fresh water).
Sea water is taken for the cooling of auxiliary plants at the Panigaglia LNG plant in Liguria, and is completely discharged into the sea in the same volume, with a higher temperature value (within the terms of the law). The withdrawal is in line with that had in 2019 and compared to 2018, increased by 33% as a result of increased operation of plant equipment.
The upstream storage activities produced approximately 6,050 cubic metres of process water (-1.8% compared with 2019), all sent to an external treatment plant for treatment.
The withdrawal of fresh water, mainly used for office activities, fire-combating systems and irrigation of green areas increased by 37% compared to 2019, while with regard to water discharges, wastewater is either conveyed to the sewerage system (78% of the total) or discharged, even after treatment, into the soil and surface water bodies (22% of the total).
Fresh water consumption 103 m3
Fresh water discharge 103 m3
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.
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.
11 May 2021 - 17:25 CEST