Reusing water from urban wastewater treatment plants in our industrial complexes

Planta petroquímica y agua alrededor

Water reuse: A part of our strategy

Water is an increasingly scarce resource and at the same time essential for the operation of our production processes, and at Repsol we use it efficiently and sustainably. Therefore, working to reduce water withdrawal and reuse this resource as much as possible is part of our strategy and our commitment to the Circular Economy and the Sustainable Development Goals.

Tarragona Industrial Complex Project

An example of this commitment is the participation of our Tarragona Industrial Complex in a circular economy project aimed at reusing water from urban wastewater plants in the towns of Tarragona and Vilaseca. Even though this water is not suitable for human consumption, it's rather suitable for industrial processes, particularly in the complex's cooling towers and steam generation boilers.

This project, which has been in operation since 2012, first consists in collecting urban waste water at the discharge point before it reaches the sea. Then, after undergoing a treatment process followed by demineralization by reverse osmosis membranes, it is distributed to companies that consume it. This reduces water withdrawal from the Ebro and Gaià rivers, resulting in more water available to the communities in the area. 

Since we launched this project, we have used 40% of the total water treated, which reduced the overall fresh water consumption by around 10% in 2018 and 2019.

Circular benefits

  • Reduce consumption of fresh water from rivers, which results in greater availability for the population
  • Preserve a natural water resource in a potential water-scarce area.
  • Optimize scarce resource utilization through various organizations by promoting industrial symbiosis and circular economy.
  • Guarantee the quality and quantity of the water supply and reduce pressure on a scarce resource that competes with other priority uses.
  • Facilitates flow release in the Gaià river from the safety reserve of the Gaià Reservoir.
Water with tank in front

Classification by key lines and value chain

Our circular economy projects are aligned with the key lines of our strategy and are present throughout our entire value chain, from obtaining raw materials to commercializing products and services. 

Classification by key lines and value chain