Research Projects


  • SATELLITE - Process Technologies in Main and Satellite Operations of an Intermunicipal Recycling Center for an Optimized Regional Nutrient Recycling
    Led by: Dr.-Ing. Maike Beier
    Team: Arne Freyschmidt, Johannes Reiter, Kai Schumüller, Kasra Saadlou, Torben Martens
    Year: 2025
    Funding: BMBF - Federal Ministry of Education and Research
    Duration: 07/2020 - 06/2025
  • SeWAGE PLANT H -SeWAGE PLANT H - Sector-coupled production of hydrogen, oxygen and waste heat at the large-scale waste water treatment plant in Hannover-Herrenhausen, Germany
    Led by: Dr.-Ing. Maike Beier, PD Dr.-Ing. habil. Dirk Weichgrebe
    Team: Sara Zahedi Nezhad, Arne Freyschmidt
    Year: 2025
    Funding: Land Niedersachsen (niedersächsische Wasserstoffförderrichtlinie)
    Duration: 09/2021 - 12/2025
  • TransKOM - Integration of Resource-Optimised Separate Drainage through Transformation of Municipal Planning Processes for Existing Neighbourhoods
    Led by: Dr.-Ing. Maike Beier
    Team: Greta Hadler
    Year: 2024
    Funding: BMBF - Bundesministerium für Bildung und Forschung
    Duration: 09/2022 - 08/2025
  • OSCAR - Online Modeling, Simulation and Remote Control System for environmental technologies on-board (Cruise) Ships (OSCAR)
    OSCAR aims to take a decisive development step towards improving the quality of environmental protection on board (cruise) ships by extending maritime digitalisation to on-board environmental process technology. The aim is to develop and test a system that will enable monitoring and, in perspective, remote control of the complex, mainly biological treatment processes from the relevant environmental segments of waste water and organic waste on board (cruise) ships. Initial point for a later centralized fleet management of the treatment processes. Furthermore, the supply of an additive based on digestate for the direct de-NOxing of ship exhaust gases is included in the overall consideration.
    Led by: Prof. Dr.-Ing. Stephan Köster
    Team: Dagmar Pohl, M. Sc. & Kai Schumüller, M. Sc.
    Year: 2022
    Funding: BMWi - Maritimes Forschungsprogramm
    Duration: 07/2019 - 06/2022
  • KompaGG-N - Complete Treatment of Manure and Digestate: Process Developement in Consideration of Regional Substance Flow Concepts for Nutrients and Pollutants
    The goal of KompaGG-N is the development of a robust and economically viable process chain for a complete treatment of manure and digestate. The regional and case specific nutrient flows (mainly nitrogen) play an important role in this regard, for the process chain is to be locally embedded. Additionally the influence of treatment on the remain of pollutants such as genes and bacteria resistant to antibiotics is investigated.
    Led by: Dr.-Ing. Maike Beier
    Team: Johannes Reiter, M. Sc.
    Year: 2022
    Funding: Bundesministerium für Bildung und Forschung (BMBF) im Rahmen des Förderprogramms "KMU-Innovativ"
    Duration: 09/2019 - 08/2022
  • TransMiT - Resource-optimised transformation of combined and separate drainage systems in existing quarters with high population pressure
    Increasing heavy rainfall events and growing urban quarters bring major challenges for urban drainage systems. The example of three districts in the cities of Braunschweig, Hanover and Hildesheim shows how urban planning and water management aspects can be linked in the long term.
    Led by: Dr.-Ing. Maike Beier
    Team: Jessica Gerstendörfer, Kim Zieseniß, Nils Kabisch, Estefania Carpio
    Year: 2022
    Funding: BMBF - Bundesministerium für Bildung und Forschung
    Duration: 04/2019 - 03/2022
  • MiNzE: Minimization of the CO2 footprint through adapted process development in process water treatment - Testing of the MiNzE process in submerged fixed beds
    Process development and semi-technical testing for the reduction of nitrous oxide emissions from deammonification in the sidestream of municipal WWTPs.
    Led by: Dr.-Ing. Maike Beier
    Team: Arne Freyschmidt, M. Sc.
    Year: 2021
    Funding: BMBF / KMU-innovativ
    Duration: 12/2018 - 05/2021
    Led by: Prof. Dr. Ing. Regina Nogueira
    Team: Dr. Urda Düker, Estefania Carpio
    Year: 2021
  • EXPOPLAN - Development and implementation of a planning tool for the application of EXPOVAL results in plant design abroad
    In EXPOPLAN, the design algorithms developed in the previous EXPOVAL project are transferred to a planning tool and methods for economic and ecological evaluation are supplemented. The aim is to develop a planning tool for process chain evaluation.
    Led by: Dr.-Ing. Maike Beier
    Team: Nils-Kristof Kabisch, M.Sc.
    Year: 2019
    Funding: BMBF
    Duration: 08/2017 - 07/2019
  • EEWBrueden: Scientific concept study for the treatment of exhaust vapour condensates from the thermal drying of municipal sewage sludge
    Led by: Dr.-Ing. Maike Beier
    Team: Dipl.-Ing. Alicja Yogendran, Dagmar Pohl, M.Sc.
    Year: 2019
    Funding: eew Energy from Waste GmbH
    Duration: 09/2018 - 11/2019
  • WaReIp - Water-Reuse in industrial parks
    Led by: Dr.-Ing. Maike Beier
    Team: Dagmar Pohl, M.Sc., Dipl.-Ing. Alicja Yogendran
    Year: 2019
    Funding: BMBF - Fördermaßnahme WavE
    Duration: 10/2016 – 09/2020
  • Smart Technologies for Sustainable Water Management in Urban Catchments as KEY Contribution to Sponge Cities
    In close coordination with local implementation partners, the KEYS joint project in the capital Beijing addresses the "sponge city concept" that is being pursued with great energy in China. Another wastewater technology focus is being pursued in the metropolis of Shenzhen.
    Led by: Prof. Dr.-Ing. Stephan Köster
    Team: Manig, N.; Feng, T.; Elsner, K.; Kabisch, N.; Itani, H.; Feldkämper, I.;
    Year: 2018
    Funding: Bundesministerium für Bildung und Forschung (BMBF) im Rahmen der Initiative "CLIENT II - Internationale Partnerschaften für nachhaltige Innovationen"
    Duration: 08/2018 - 01/2022
  • MoHaOrg - Ertüchtigung von vorhandenen dezentralen Regenwasserbehandlungssystemen am Beispiel des Nassschlammfangs Modell Hannover unter besonderer Berücksichtigung des Einflusses von Organik
    Led by: Dr.-Ing. Maike Beier
    Team: Kristina Elsner, M.Sc., Dipl.-Ing. Franziska Verworn
    Year: 2018
    Funding: DBU
    Duration: 02/2017 – 11/2018
  • Potential and limitations of phosphorus recovery for wastewater treatment plants with enhanced biological phosphorus removal in Lower Saxony
    Led by: Dr.-Ing. Maike Beier
    Team: Dr.-Ing. Yvonne Schneider; Christian Lorek, M.Sc.
    Year: 2016
    Funding: Ministerium für Umwelt, Energie und Klimaschutz Niedersachsen
    Duration: 05/2014 – 01/2016
  • Reduction of N2O emissions from wastewater treatment plants - measurements, modeling and process optimization (RENEMO)
    Recently, a more integrated view of greenhouse gas emissions from WWTPs has gained more and more attention. Preliminary studies indicated that apart from indirect emissions from electricity production the direct emissions of nitrous oxide (N2O) and methane (CH4) from biological processes at WWTPs might also play a major role in the CO2-footprint and should be included in life-cycle assessments. Lacking reliable scientific quantification of nitrous oxide from specific treatment processes, currently standard factors (developed by the IPCC) are used to estimate N2O emissions from municipal wastewater treatment plants for the National Greenhouse Gas Inventories required by the United Nations‟ Climate Convention and Kyoto Protocol. For this purpose it is important to close the current research gaps of reliable quantification of N2O and improving the understanding of the biological processes.
    Led by: Dr.-Ing. Maike Beier
    Team: M. Eng. Celso Cristino da Silva, Dipl.-Ing. Benjamin Vogel
    Year: 2012
    Funding: BMBF within the context of promoting bilateral research projects in the field of sustainability in cooperation with Poland
    Duration: 05/2012 - 04/2014
  • The development of a deammonification treatment to remove nitrogen from recirculated water used in aquaculture (DeamRecirc)
    DeammRecirc aims at the development of a deammonification treatment to remove nitrogen from recirculated water used in aquaculture.
    Led by: Dr.-Ing. Maike Beier
    Team: Klaus Nelting, M.Sc., Dipl.-Ing. Yvonne Schneider
    Year: 2011
    Funding: European Union
    Duration: 01/2011 - 12/2012
  • AKIZ - Integrated Wastewater Concept for Industrial Zones (German-Vietnamese joint research project)
    Using containerized pilot plants for different branches in Tra Noc Industrial Zone, high-tech solutions for pre-treatment of wastewaters, generation of energy from wastewater and recuperation of valuable substances are adapted and verified by on-site pilot systems, taking into consideration the local conditions. Concepts for sewage sludge management are investigated. Monitoring surveys create the database for control mechanisms especially in terms of toxic wastewaters. Furthermore, sociological and ecological aspects are researched. The sustainable implementation of AKIZ shall be supported through capacity building for stakeholders and local partners.
    Led by: Dr.-Ing. Maike Beier
    Team: Dipl.-Ing. Niklas Trautman
    Year: 2010
    Funding: Federal Ministry of Education and Research (BMBF); Vietnamese Ministry of Science and Technology (MOST)
    Duration: 2010 -2014