The industry used 98,870 million m3 of water in 2016. Most of the water (99%) was used for electricity, gas, steam and air conditioning supply. From industry to the environment 717 million m3 of wastewater was discharged.
In 2016, 98,870 million m3 of water was used in mining and quarrying, manufacturing, electricity supply and water supply, which is 26% more than in 2015.
Regarding the activity (B, C, D and E of NACE Rev. 2), in 2016 in industry most water (98,089 million m3) was used for electricity supply; the majority (99%) of this water was used for turbine drive in hydroelectric power plants. Not taking into account the water used in electricity supply for the turbine drive in hydroelectric power plants in 2016, 1,460 million m3 of water was used in industrial activities. Electricity, gas, steam and air conditioning supply used 679 million m3 of water, followed by the use of water in water supply (586 million m3 of water). In manufacturing 194 million m3 of water and in mining and quarrying almost a million m3 of water was used.
In 2016 more water used in electricity suppy and water supply than in 2015
Regarding sections of activity (B, C, D and E of NACE Rev. 2), the use of water was rather diverse. Compared to 2015, in 2016 more water was used in water supply, sewerage, waste management and remediation activities (by 29%) and in electricity, gas, steam and air conditioning supply (by 26%). In mining and quarrying and in manufacturing the use of water decreased compared to 2015: in the former by 3% and in the latter by 32%.
Industry discharged 717 million m3 of wastewater in 2016
In 2016, 717 million m3 of wastewater was discharged from industry, which is 7 million m3 less than in 2015. The majority of wastewater (649 million m3) was only heat-polluted. Of the rest of the wastewater 24 million m3 was treated before discharge and 44 million m3 was untreated before discharge.
Industrial wastewater treatment plants treated the largest amount of wastewater mechanically-chemically-biologically
By using and upgrading industrial wastewater treatment plants companies try to minimise the impact of wastewater on the environment. In 2016 most of the treated wastewater from industry was treated using mechanical-chemical-biological treatment (9.6 million m3) and mechanical-chemical treatment (7.3 million m3). Slightly less than a fifth of treated wastewater underwent only mechanical treatment (4.5 million m3). Mechanical-biological treatment was used on 1.2 million m3 of wastewater and biological treatment on 0.7 m3 of wastewater. The remaining 0.4 million m3 of wastewater was treated using chemical or chemical-biological treatment.
Table 1: Water used in industry, Slovenia
Table 2: Wastewater in industry, Slovenia, 2016
1) 96% of this wastewater was only heat-polluted.