@article{HoernschemeyerSoefkerRienietsNiestenetal.2022,
  author    = {H{\"o}rnschemeyer, Birgitta and S{\"o}fker-Rieniets, Anne and Niesten, Jan and Arendt, Rosalie and Kleckers, Jonas and Klemm, Christian and Stretz, Celestin Julian and Reicher, Christa and Grimsehl-Schmitz, Winona and Wirbals, Daniel and Bach, Vanessa and Finkbeiner, Matthias and Haberkamp, Jens and Budde, Janik and Vennemann, Peter and Walter, Gotthard and Flamme, Sabine and Uhl, Mathias},
  title     = {The ResourcePlan — An Instrument for Resource-Efficient Development of Urban Neighborhoods},
  series = {Sustainability},
  volume    = {14},
  journal   = {Sustainability},
  number    = {3},
  publisher = {MDPI},
  doi       = {10.25974/fhms-14854},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-148545},
  year      = {2022},
  abstract  = {In Germany, the current sectoral urban planning often leads to inefficient use of resources, partly because municipalities lack integrated planning instruments and argumentation strength toward politics, investors, or citizens. The paper develops the ResourcePlan as (i) legal and (ii) a planning instrument to support the efficient use of resources in urban neighborhoods. The integrative, multi-methodological approach addresses the use of natural resources in the building and infrastructural sectors of (i) water (storm- and wastewater) management, (ii) construction and maintenance of buildings and infrastructure, (iii) urban energy system planning, and (iv) land-use planning. First, the development as legal instrument is carried out, providing (i) premises for integrating resource protection at all legal levels and (ii) options for implementing the ResourcePlan within German municipal structures. Second, the evaluation framework for resource efficiency of the urban neighborhoods is set up for usage as a planning instrument. The framework provides a two-stage process that runs through the phases of setting up and implementing the ResourcePlan. (Eco)system services are evaluated as well as life cycle assessment and economic aspects. As a legal instrument, the ResourcePlan integrates resource protection into municipal planning and decision-making processes. The multi-methodological evaluation framework helps to assess inter-disciplinary resource efficiency, supports the spatial identification of synergies and conflicting goals, and contributes to transparent, resource-optimized planning decisions.},
  language  = {de}
}
@article{MuellerHagemannAlbayrakAueletal.2020,
  author    = {M{\"u}ller-Hagemann, M. and Albayrak, I and Auel, C and Boes, RM},
  title     = {Field Investigation on Hydroabrasion in High-Speed Sediment-Laden Flows at Sediment Bypass Tunnels},
  series = {Water 12 (2)},
  journal   = {Water 12 (2)},
  publisher = {MDPI},
  address   = {Basel},
  doi       = {10.25974/fhms-15126},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-151268},
  year      = {2020},
  abstract  = {Wear due to sediment particles in fluid flows, also termed hydroabrasion' or simply 'abrasion', is an omnipresent issue at hydraulic structures as well as in bedrock rivers. However, interactions between flow field, particle motion, channel topography, material properties and abrasion have rarely been investigated on a prototype scale, leaving many open questions as to their quantitative interrelations. Therefore, we investigated hydroabrasion in a multi-year field study at two Swiss Sediment Bypass Tunnels (SBTs). Abrasion depths of various invert materials, hydraulics and sediment transport conditions were determined and used to compute the abrasion coefficients kv of different abrasion models for high-strength concrete and granite. The results reveal that these models are useful to estimate spatially averaged abrasion rates. The kv-value is about one order of magnitude higher for granite than for high-strength concrete, hence, using material-specific abrasion coefficients enhances the prediction accuracy. Three-dimensional flow structures, i.e., secondary currents occurring both, in the straight and curved sections of the tunnels cause incision channels, while also longitudinally undulating abrasion patterns were observed. Furthermore, hydroabrasion concentrated along joints and protruding edges. The maximum abrasion depths were roughly twice the mean abrasion depths, irrespective of hydraulics, sediment transport conditions and invert material.},
  language  = {en}
}
@article{TophoffKreyenschulteSchuettrumpfetal.2022,
  author    = {Tophoff, Lukas and Kreyenschulte, Moritz and Sch{\"u}ttrumpf, Holger and Heimbecher, Frank},
  title     = {Verockerung wasserbaulicher Filteranlagen: Stand der Wissenschaft und notwendige Untersuchungen},
  series = {Grundwasser - Zeitschrift der Fachsektion Hydrogeologie},
  journal   = {Grundwasser - Zeitschrift der Fachsektion Hydrogeologie},
  doi       = {10.25974/fhms-15293},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-152930},
  pages     = {1 -- 14},
  year      = {2022},
  abstract  = {In den letzten Jahrzehnten kam es in Einzelf{\"a}llen zu schweren Sch{\"a}den an wasserbaulichen geotextilen Filteranlagen infolge der Verstopfung durch ausgeflockte ockerhaltige Produkte. Durch eine starke Verminderung der Durchl{\"a}ssigkeit der Geokunststoffe in Kombination mit einem hohen hydrostatischen Druck wurden unter anderem die Deckschichten verschiedener Deckwerke in den tidebeeinflussten Wasserstraßen Ems und Weser angehoben und besch{\"a}digt. Bisher wurden die Milieubedingungen, d.h. Grundwasser- und Oberfl{\"a}chenwasserbeschaffenheit sowie Aquifer- und Deckwerksmaterial, unter denen die Ockerbildung in geotextilen und mineralischen Filteranlagen auftritt, noch nicht systematisch untersucht. Im Rahmen des vorliegenden Beitrags werden im ersten Schritt aus theoretischen Untersuchungen und Datenanalysen von Grundwasser- und Oberfl{\"a}chenwasseruntersuchungen Kriterien zur Bewertung der Verockerungsneigung abgeleitet. Diese Kriterien bzw. DOCP (decisive ochre clogging parameters) zeigen in den {\"A}stuaren Ems, Weser und Elbe Betr{\"a}ge an, die Verockerungserscheinungen beg{\"u}nstigen bzw. erm{\"o}glichen. Auf Basis dieser Untersuchungen werden im zweiten Schritt Randbedingungen f{\"u}r zuk{\"u}nftige systematische in-situ Untersuchungen an wasserbaulichen Filteranlagen sowie im experimentellen Modell abgeleitet.},
  language  = {de}
}
@article{BaslerMaehnerFischeretal.2023,
  author    = {Basler, Felix and M{\"a}hner, Dietmar and Fischer, Oliver and Hilbig, Harald},
  title     = {Influence of early-age vibration on concrete strength},
  series = {Structural Concrete},
  journal   = {Structural Concrete},
  issn      = {1464-4177},
  doi       = {10.25974/fhms-17205},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-172052},
  pages     = {6505 -- 6519},
  year      = {2023},
  abstract  = {This report examines the strength of young and early age concrete that has been systematically exposed to horizontal, sinusoidal vibrations with varying vibration parameters. Specimens were subjected to vibrations of predefined vibration times (4-14 h) and the compressive strength was determined after a period of 28 days. It was found that the different parameters have no critical influence on compressive strength and that vibration prior to initial setting of the concrete can increase its strength. Additional information to examine the reasons for this increase was obtained by further investigations (nuclear magnetic resonance, x-ray diffraction, and thermogravimetric analysis).},
  language  = {en}
}
@article{DittmannSeeligThalmannetal.2024,
  author    = {Dittmann, Daniel and Seelig, Alina H. and Thalmann, Mogens and Wilkes, Theresa and Junghans, Veikko and Zahn, Daniel and Klitzke, Sondra and Peters, Andre and Haberkamp, Jens and Reemtsma, Thorsten and Ruhl, Aki S.},
  title     = {Potential and risks of water reuse in Brandenburg (Germany) - an interdisciplinary case study},
  series = {Water Reuse 14},
  journal   = {Water Reuse 14},
  issn      = {2709-6092},
  doi       = {10.25974/fhms-17949},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-179497},
  pages     = {1 -- 15},
  year      = {2024},
  abstract  = {For Brandenburg, a region in Germany with increasing water shortage and drought events, water reuse can counteract competition scenarios between drinking water supply, agricultural irrigation, and industrial use. Centralized and decentralized sources for reclaimed water are found to potentially substitute 245 or 28\% of irrigation water, respectively, in agriculture production in Brandenburg. For such a reuse scenario, the fate of organic micropollutants is examined for diatrizoate (DZA) and carbamazepine (CBZ). Retention in local sandy soil and transfer into roots and leaves of arugula are analyzed in lysimeter studies and greenhouse pot experiments. Vertical transport was found for DZA and accumulation in or on arugula roots with a root concentration factor of 1,925+34\% but a low bioconcentration factor due to intrinsic molecule properties. CBZ was not found to be mobile in the sandy soil but accumulates in arugula roots and leaves by factors of 70+7\% and 155+12\%, respectively. Further research on potential plant uptake and groundwater enrichment for more substances is highly recommended as well as tertiary wastewater treatment prior to water reuse.},
  language  = {en}
}
@article{KleckersAbadiBrandhermetal.2024,
  author    = {Kleckers, Jonas and Abadi, Abbas and Brandherm, Katrin Marie and Haberkamp, Jens},
  title     = {Wastewater generation model to predict impacts of urine separation on wastewater treatment plants},
  series = {Water Science \& Technology 89 (5)},
  journal   = {Water Science \& Technology 89 (5)},
  issn      = {0273-1223},
  doi       = {10.25974/fhms-17950},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-179502},
  pages     = {1312 -- 1324},
  year      = {2024},
  abstract  = {Wastewater treatment plants (WWTPs) are under increasing pressure to enhance resource efficiency and reduce emissions into water bodies. The separation of urine within the catchment area may be an alternative to mitigate the need for costly expansions of central WWTPs. While previous investigations assumed a spatially uniform implementation of urine separation across the catchment area, the present study focuses on an adapted stochastic wastewater generation model, which allows the simulation of various wastewater streams (e.g., urine) on a household level. This enables the non-uniform separation of urine across a catchment area. The model is part of a holistic modelling framework to determine the influence of targeted urine separation in catchments on the operation and emissions of central WWTPs, which will be briefly introduced. The wastewater generation model is validated through an extensive sampling and measurement series. Results based on observed and simulated wastewater quantity and quality for a catchment area of 366 residents for two dry weather days indicate the suitability of the model for wastewater generation and transport modelling. Based on this, four scenarios for urine separation were defined. The results indicate a potential influence of spatial distribution on the peaks of total nitrogen and total phosphorus.},
  language  = {en}
}