Urban Wastewater Treatment: R3Water Reuse and Recovery
Urban wastewater treatment can recover water, nutrients and energy. R3Water demos in three countries cut UV power use by up to half.
Urban wastewater treatment shifts from disposal to production when reuse and resource recovery are built into plant design. The European R3Water demonstration, funded under FP7 with grant 619093 and run from January 2014 to June 2017, tested a dozen technologies for water reuse and valuables recovery, according to CORDIS fact sheet updated April 20, 2022 and CORDIS Results in Brief published November 16, 2017. Total project cost reached EUR 7737542 as of the April 2022 CORDIS update, with EU contribution of EUR 5282867. Readers tracking circular economy water treatment can use those R3Water results to judge reuse options.
What Does Urban Wastewater Treatment Recover Under R3Water?
Urban wastewater treatment under R3Water recovered water for reuse and valuables including nutrients, in 3 countries, per CORDIS fact sheet updated April 20, 2022. Demonstration sites stood in Belgium, Spain and Sweden. Coverage in Industry News frames those plants as production units for reclaimed water and recovered materials rather than disposal-only works. Hydrothermal carbonisation improved sludge dewatering and allowed phosphate recovery while yielding biocarbon, according to CORDIS Results in Brief published November 16, 2017.
| Focus | What R3Water demonstrated | Operator takeaway |
|---|---|---|
| Water reuse | Monitoring plus disinfection control for variable flow | Lower chemical and energy load during reuse |
| Nutrient recovery | Phosphate capture from sludge carbonisation | Material stream for further use |
| Plant efficiency | Software-led energy and process control | Reduced contracted power and operating cost |
How Did Urban Wastewater Treatment Cut Disinfection Energy Use?
Urban wastewater treatment cut ultraviolet power use by up to 50 percent in Sweden and Spain demos, per CORDIS Results in Brief published November 16, 2017. Automated control adjusted disinfectant dose to flow conditions and avoided overdosing. Innowatt software tracked real-time and historical energy use to optimise contracted power, according to CORDIS Results in Brief published November 16, 2017. Ozone polishing and activated carbon removed drug residues and pathogens while keeping ozone dose low, according to the same November 16, 2017 CORDIS summary.
Where Did Urban Wastewater Treatment Tests Run and What Came Next?
Urban wastewater treatment tests ran in Belgium, Spain and Sweden over 42 months starting January 2014, per SusChem blog posted May 3, 2017. Twelve partners from seven European countries took part, according to CORDIS Results in Brief published November 16, 2017. The closing conference on water in the circular economy met in Brussels on May 30, 2017, according to SusChem blog posted May 3, 2017. Buyers comparing event lessons can review R3Water workshop site visits alongside the final conference record.
Urban Wastewater Treatment FAQ
What does urban wastewater treatment recover in the R3Water demos?
Urban wastewater treatment in R3Water recovers water for reuse and valuables from sludge. Demonstrations focused on monitoring, disinfection control and nutrient capture to lower plant costs and environmental load.
How does urban wastewater treatment lower energy use for disinfection?
Urban wastewater treatment lowers disinfection energy through automated dose control tied to flow. Software tracks use patterns and trims ultraviolet and chemical dosing without harming effluent quality.
Where can urban wastewater treatment operators see R3Water test results?
Urban wastewater treatment operators can review results from Belgium, Spain and Sweden demo plants. The Brussels final conference record summarises reuse, recovery and efficiency findings for plant planning.