How can we convert an aqueous sodium sulfate solution into something useful?

A wastewater stream (2m3/hour) produced by the Carbogen Amcis plant in Veenendaal contains 2% sodium sulfate and 0.3% fatty acids. They dilute this wastewater with used cooling water from the production department before discharging it into the sewers.

The water used to dilute the wastewater is extracted groundwater. Carbogen Amcis expects that they will no longer be allowed to pump up groundwater in the future, at which point they will no longer be able to dilute the saline wastewater. They are not permitted to discharge undiluted saline wastewater, as the salt may affect the municipal sewage system. For this reason, the company would prefer processing the sodium sulfate (approx. 100 tonnes annually in a circular manner).

BioVoice is an initiative of REWIN West-Brabant, Green Chemistry Campus, the joint Rabobanks of Southwest Netherlands and the province of North Brabant. Dockwize, Impuls Zeeland, Centre of Expertise Biobased Economy and Midpoint Brabant have also joined as implementation partners. Together, we want to give innovative entrepreneurs and up-and-coming biobased/circular talents the space and opportunities to develop and market their idea/product, so as to achieve our common goal: accelerating the transition to a sustainable economy.

BioVoice is made possible by financial contributions from the Regional Deal for Central and Western Brabant, the Province of North Brabant, the Province of Zeeland and Rabobank.