The main task of MULTI-ReUse was the development, demonstration and evaluation of a modular water treatment system.
The main task of MULTI-ReUse was the development, demonstration and evaluation of a modular water treatment system, in order to offer service water in different qualities and volumes for the different purposes and to competitive prices.
The following process chains were tested in the pilot plant:
1) Ultrafiltration – Desinfection: Water quality: free of undissolved substances and pathogenic germs; still contains dissolved nutrients and organic trace substances. Uses: industrially for washing processes (e. g. street cleaning) or for cooling processes with little requirements (e. g. regarding the concentration of dissolved salts).
2) Ultrafiltration – activated Carbon filtration – Desinfection: Water quality: free of undissolved substances and pathogenic germs; concentrations of nutrients and organic trace substances are considerably reduced. This increases the microbiological stability of the water (lower growth potential during storage and distribution. Uses: Industry: cleaning or cooling processes with higher quality requirements; urban or agricultural irrigation purposes;
3) Ultrafiltration – Reverse Osmosis – Desinfection/Stabilization: Water quality: free of undissolved substances and pathogenic germs; minimum in the concentration of salts and organic trace; a maximum of microbiological stability. Uses: MAR; process water for a broad spectrum, e. g. for the production of ultrapure water or as mixed water for dilution purposes
1,5 mio €; funded by the BMBF; engagement of stakeholders
Evidence of success
The pilot plant was successfully tested for 2,5 years.Reuse Water is an economic alternative to drinking water. Therefore OOWV is working on the realization of a large-scale plant.
Costs, risks, stakeholder management,
Potential for learning or transfer
Large wastewater treatment plants are often located near industrial hotspots. There, no water in drinking water quality is needed. Fit-For-Purpose solutions can also help to conserve drinking water resources at other locations. Especially since in the industrial sector money already has to be paid for fresh water.
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