The infrastructure, water, and energy group Lantania will be responsible for developing a specific treatment unit to be integrated into the Sagunto Municipal Wastewater Treatment Plant (EDAR) for the battery factory. This facility will treat water from the municipal treatment plant in Sagunto to adapt it as process water suitable for the factory, as reported by the company.
The plant will have a treatment capacity of 6,240 m³ per day and will use an advanced system to treat the effluent from the Sagunto EDAR, adapting it for industrial use. The treated water will primarily be used for the cooling towers of the battery factory and will form part of the auxiliary infrastructures that PowerCo is developing in Sagunto.
The technical solution will incorporate lamellar decantation with chemical reagent dosing to eliminate carbonates and bicarbonates, reducing water hardness. It will also include sand filtration and sludge dewatering, ensuring the quality of the regenerated water and the overall efficiency of the procedure. Thanks to this facility, the water will be decarbonated in an integrated manner, optimizing its performance in cooling circuits.
This solution will ensure a stable supply of process water for the gigafactory, which will significantly reduce its demand for potable water, a key factor in high-consumption industrial environments. Lantania has already begun the engineering phase of this water reuse plant. Construction work is expected to start next May, with the facility projected to be completed in the second quarter of 2027.
This hydraulic infrastructure is a relevant component for the operation of the PowerCo factory, considered strategic within the reindustrialization and energy transition process in the Valencian Community.




