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Updated: Aug 16, 2026

Mesocosm-Scale Constructed Wetland Design for Wastewater Treatment
Published on: May 2, 2025
Constructed wetlands for CSO treatment: an overview of practice and research in Germany
1Laboratory of Water Resources Management, University of Applied Sciences Muenster, Corrensstrasse 25, D-48149 Muenster, Germany. uhl@fh-muenster.de
Abstract:
Vertical flow treatment wetlands have been developed as very useful tools for treatment of combined sewage overflow. Several systems have been in operation for over 15 years. Based on recent research work, new technical guidelines now recommend systems with a drained filter of sand 0/2 mm and a throttled outflow. COD, NH4-N and SS removal rates of 85-99% can be expected from this type of filter. SS loadings that are too high and very long or frequent inundation affect the performance adversely. Information for successful long-term operation were derived from various existing plants.
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