A battery manufacturing facility in Sweden will use wastewater for its cooling needs. Northvolt is building a battery factory adjacent to a Volvo plant in Torsland. Using potable water for cooling is not ideal, so the company will use the effluent treated at the local sewage plant to fulfill its cooling requirements.
Northvolt and its local water treatment plant found a way to extend the benefits as well. While cooling the manufacturing process, that water will get hotter. Northvolt then will return the warm water to the treatment facility, where it will be used to heat the water used for district heating in the local community.