@inproceedings{RichterWichernGroempingetal.2019,
  author    = {Richter, Lea and Wichern, Marc and Gr{\"o}mping, Markus and Robecke, Ulrich and Haberkamp, Jens},
  title     = {Ammonium recovery from process water of digested sludge dewatering by membrane contactors},
  series = {9th IWA Membrane Technology Conference 2019, Toulouse},
  booktitle = {9th IWA Membrane Technology Conference 2019, Toulouse},
  year      = {2019},
  language  = {en}
}
@inproceedings{RichterWichernGroempingetal.2019,
  author    = {Richter, Lea and Wichern, Marc and Gr{\"o}mping, Markus and Robecke, Ulrich and Haberkamp, Jens},
  title     = {Nitrogen recovery from process water of digested sludge dewatering with membrane contactors},
  series = {3rd IWA Resource Recovery Conference 2019, Venice},
  booktitle = {3rd IWA Resource Recovery Conference 2019, Venice},
  isbn      = {9788894470000},
  year      = {2019},
  language  = {en}
}
@inproceedings{RichterWichernGroempingetal.2019,
  author    = {Richter, Lea and Wichern, Marc and Gr{\"o}mping, Markus and Robecke, Ulrich and Haberkamp, Jens},
  title     = {Process water treatment by membrane contactors for nitrogen recovery from municipal wastewater treatment plants},
  series = {IWA Innovation Conference on Sustainable Wastewater Treatment and Resource Recovery 2019, Shanghai},
  booktitle = {IWA Innovation Conference on Sustainable Wastewater Treatment and Resource Recovery 2019, Shanghai},
  year      = {2019},
  language  = {en}
}
@article{RichterWichernGroempingetal.2020,
  author    = {Richter, Lea and Wichern, Marc and Gr{\"o}mping, Markus and Robecke, Ulrich and Haberkamp, Jens},
  title     = {Ammonium recovery from process water of digested sludge dewatering by membrane contactors},
  series = {Water Practice \& Technology},
  volume    = {15},
  journal   = {Water Practice \& Technology},
  number    = {1},
  issn      = {1751-231X},
  doi       = {10.2166/wpt.2020.002},
  pages     = {84 -- 91},
  year      = {2020},
  abstract  = {Membrane contactors are a promising alternative for nitrogen removal and recovery from process water compared to other physicochemical and biological sidestream treatment processes. M{\"u}nster wastewater treatment plant (WWTP) is the first municipal WWTP in Germany operating a full-scale membrane contactor system to improve the nitrogen elimination and recovery efficiency. Factors influencing the operation and membrane performance are investigated in an accompanying research project. Additional operational aspects of the applied membrane modules are investigated in detail using a bench-scale membrane contactor. First results of the full-scale application demonstrate a high nitrogen removal efficiency of >95\%.},
  language  = {en}
}
@inproceedings{RichterPaulsenWichernetal.2021,
  author    = {Richter, Lea and Paulsen, Svea and Wichern, Marc and Gr{\"o}mping, Markus and Robecke, Ulrich and Haberkamp, Jens},
  title     = {Hohlfaser-Membrankontaktoren zur Stickstoffr{\"u}ckgewinnung aus Prozesswasser einer kommunalen Kl{\"a}ranlage},
  series = {DGMT-Tagung 2021 - Membranen zum Schutz von Klima und Ressourcen},
  booktitle = {DGMT-Tagung 2021 - Membranen zum Schutz von Klima und Ressourcen},
  doi       = {10.25974/fhms-13748},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-137485},
  year      = {2021},
  language  = {de}
}
@article{RichterPaulsenWichernetal.2021,
  author    = {Richter, Lea and Paulsen, Svea and Wichern, Marc and Gr{\"o}mping, Markus and Robecke, Ulrich and Haberkamp, Jens},
  title     = {Hohlfaser-Membrankontaktoren zur Stickstoffr{\"u}ckgewinnung aus Prozesswasser einer kommunalen Kl{\"a}ranlage},
  series = {Chemie Ingenieur Technik},
  volume    = {93},
  journal   = {Chemie Ingenieur Technik},
  number    = {9},
  issn      = {1522-2640},
  doi       = {10.1002/cite.202100019},
  pages     = {1440 -- 1444},
  year      = {2021},
  abstract  = {Prozesswasser aus der Faulschlammentw{\"a}sserung von kommunalen Kl{\"a}ranlagen stellt eine zus{\"a}tzliche stoffliche Belastung der Anlage in Form von Stickstoff dar. Die Hauptkl{\"a}ranlage M{\"u}nster betreibt zur Stickstoffentfernung und -r{\"u}ckgewinnung aus Prozesswasser eine innovative Membrankontaktorenanlage im großtechnischen Maßstab. Im Rahmen dieser Studie werden Auswirkungen auf die Leistung und den Betrieb der Membran sowie die Verwertung des produzierten D{\"u}ngers untersucht. Erste Ergebnisse zeigen Stickstoffentfernungsleistungen von ca. 85 \% und eine regionale Verwertbarkeit des produzierten D{\"u}ngers.},
  language  = {de}
}
@article{WetterBrueggingWeideetal.2021,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar and Weide, Tobias and Petzmeier, Jens and Wichern, Marc},
  title     = {Comparison of thermophilic and hyperthermophilic dark fermentation with subsequent mesophilic methanogenesis in expanded granular sludge bed reactors},
  series = {International Journal of Hydrogen Energy},
  volume    = {2021},
  journal   = {International Journal of Hydrogen Energy},
  number    = {Vol.46, Issue 57},
  issn      = {0360-3199},
  pages     = {29142 -- 29159},
  year      = {2021},
  language  = {en}
}
@article{StrickerLittfinskiHeinzetal.2022,
  author    = {Stricker, Max and Littfinski, Tobias and Heinz, Eva and Pecher, Klaus-Hans and L{\"u}bken, Manfred and Gr{\"u}ning, Helmut and Wichern, Marc},
  title     = {Design-oriented evaluation of the hydrodynamics in a full-scale combined filter-lamella separator for urban stormwater treatment},
  series = {Water Science and Technology},
  volume    = {Vol 85},
  journal   = {Water Science and Technology},
  number    = {No 10},
  issn      = {0273-1223},
  doi       = {10.2166/wst.2022.135},
  pages     = {2854 -- 2868},
  year      = {2022},
  abstract  = {The development of compact treatment devices with high removal efficiencies and low space requirements is a key objective of urban stormwater treatment. Thus, many devices utilize a combination of sedimentation and upward flow filtration in a single system. This study, for the first time, evaluates the flow field inside a combined filter-lamella separator via computational fluid dynamics. Herein, three objectives are investigated: (i) the flow field for different structural configurations, (ii) the distribution of particulate matter along the filter bed and (iii) the dynamic clogging in discrete filter zones, which is addressed by a clogging model derived from literature data. The results indicate that a direct combination of a filtration stage with a lamella separator promotes a uniform flow distribution. The distribution of particulate matter along the filter bed varies with configuration and particle size. Clogging, induced by particles in the spectrum ,63 μm, creates gradients of hydraulic conductivity along the filter bed. After treating about half of Germany's annual runoff-efficient precipitation at a rainfall intensity of 5 L/(s·ha), the filtration rates increase in the front of the filter bed by þ10\%. Thus, long-term operating behavior is sensitive to efficient filter utilization in compact treatment devices.},
  language  = {en}
}
@article{RichterWichernHaberkamp2023,
  author    = {Richter, Lea and Wichern, Marc and Haberkamp, Jens},
  title     = {Prozesswasseraufbereitung - Erfahrungen aus dem Betrieb einer Membrankontaktorenanlage},
  series = {gwf Wasser + Abwasser},
  volume    = {2023},
  journal   = {gwf Wasser + Abwasser},
  number    = {10},
  issn      = {0016-3651},
  pages     = {71 -- 75},
  year      = {2023},
  abstract  = {Die R{\"u}ckf{\"u}hrung von Prozesswasser aus der Faulschlammentw{\"a}sserung kommunaler Kl{\"a}ranlagen f{\"u}hrt insbesondere durch dessen hohe Ammoniumkonzentration zu einer stofflichen R{\"u}ckbelastung der Abwasserbehandlung. Zur separaten Prozesswasserbehandlung wurde auf der Hauptkl{\"a}ranlage M{\"u}nster eine großtechnische Membrankontaktorenanlage mit Vorbehandlung installiert. Es wurden Stickstoffentfernungsleistungen von durchschnittlich ca. 74 \% erreicht. Betriebserfahrungen zeigen, dass neben pH-Wert, Temperatur und Volumenstrom insbesondere die Feststoffabscheidung durch die Vorbehandlung des Prozesswassers einen maßgeblichen Einfluss auf den stabilen Betrieb der Membrankontaktorenanlage hat. Mit den Membrankontaktoren konnte aus dem Prozesswasser Stickstoff als Ammoniumsulfatl{\"o}sung mit einem mittleren Stickstoffanteil von ca. 2,7 \% N zur{\"u}ckgewonnen werden.},
  language  = {de}
}