Case study 1 - Dow, The Netherlands

Mild desalination of water streams for optimum reuse in industry or agriculture at affordable costs – Design, construction and start-up of demo facility
Led by Dow, Netherlands

Situation: relatively diluted (< 2 g/l salt) water streams (miscellaneous surface waters and effluents of both industrial and urban wastewater treatment facilities) with varying flows (up to 500m³/h in single streams, up to 8 million m³/year in total)

Industry site characteristics: Facilitate use of reclaimed water in industrial water management process due to shortage of fresh water

Success indicators: reduce fresh water dependency by > 20%; close loop process up to 90%; symbiotic integration of industrial, urban and agricultural sector


 The focus of the demo is a “mild desalination” of miscellaneous surface waters, process streams,  and effluents of both industrial and urban wastewater treatment facilities.

• The objective is to develop a new application based on existing innovative concepts and existing technologies that enable the reuse of water in industry or agriculture.

• By developing detailed understanding of processes and their impact on the functionality of each treatment step, the resulting configuration of technologies will be generically applicable.

• This development is a required enabler for the realization of the regional water cycle project in Zeeuws-Vlaanderen, the Netherlands, but can be utilized in each fresh water scarce and coastal urban/industrial area.

• A key metric for success is to produce an industrial grade water (characterized by a conductivity of 1 mS/cm) for less than 0.40 € /m³ (economic value) from used process and urban waters.

• Conversion cost vs. produced water quality required for the final application will be referenced to this financial objective.

The resulting configuration of different technologies will be tested, demonstrated and evaluated in the case study at the Dow site, it will be generically applicable as symbiotic reuse concept in coastal regions where industry, urban and agricultural use compete.

This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° 280756.

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