Voltea is developing CapDI for wastewater recycling, specifically for agricultural use. Voltea received a €1.2M order from the Dutch Ministry of Infrastructure and the Environment after successfully completing a feasibility study showing that CapDI technology can desalinate wastewater more efficiently than other competing technologies such as Reverse Osmosis (RO). The feasibility study was carried out in collaboration with the Delft Blue Water project consortium (Delfuent, Evides, Veolia, Hoogheemraadschap Delfland). As part of the project, Voltea is building a full scale treatment line, featuring CapDI technology, which will desalinate 5- 10 m3/hr of effluent from the Harnaschpolder Wastewater Treatment Plant near Delft. The project’s goal is to produce desalinated water that can be reused for irrigation of local greenhouses.
In recent years, regulations have become stricter regarding the quality of effluent discharged from wastewater treatment plants into rivers or the sea. Additionally, new restrictions have limited farmers in their use of surface water for irrigation. This regulatory environment makes wastewater reuse for agricultural purposes an attractive option for farmers, wastewater treatment plant operators, and companies providing wastewater reuse solutions.