The Clean Water Technology Lab – CLEWATEC, a Helmholtz Innovation Lab located at Helmholtz-Zentrum Dresden-Rossendorf, is an interface between research and industry where new ideas for sustainable water treatment are continuously tested and developed into breakthrough technological applications.
Disruptive innovations for the water sector
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Latest CLEWATEC News:
PhD Robert Herrmann-Heber developed a flow camera as a handheld measurement tool for the in-situ characterization of the dispersed gas phase, i.e. the gas bubble size distribution and gas bubble velocity, and the mass transfer in aerated tanks. He tested the equipment in our activated sludge bubble columns down to 4 meters of immersion and validated the estimated volumetric mass transfer coefficient derived from the camera data with data from commercial oxygen probes during aeration with a rubber membrane sparger. Measurements with the flow camera in a large test facility at Air Liquide’s R&D Campus in Shanghai are upcoming in the next weeks.
CLEWATEC wishes all its project members, partners, friends and followers a happy & peaceful holiday season as well as a good & healthy start into the new year 2021!
CLEWATEC is now also listed in the Invention Store, the German web portal for cutting-edge inventions from German research. For more information, please click here.
In November 2020, the wastewater biological lab of CLEWATEC was upgraded with new features. The new equipment includes a spectrophotometer, a moisture analyser as well as some additional supplementary accessories. Therefore, CLEWATEC can now provide the investigation of wastewater samples including parameters like COD and Nitrogen together with important activated sludge parameters for further wastewater analysis.
Furthermore, Alejandro Parra participated in the DWA online event “Mitteldeutscher Gewässer- und Abwassertag 2020” on 17.11.2020 where CLEWATEC was also presented with an image page in the conference proceedings.
CLEWATEC conducted an Advanced Oxidation Processes Workshop in Krefeld with experts from Air Liquide and Friedrich-Schiller-Universität Jena. The team discussed new possibilities to use ozone and cavitation for applications in the fields of micro-pollutant removal and resource recovery. The participants also visited an ozonation facility operated by Air Liquide at a wastewater treatment plant.
Furthermore, on 13th October 2020, our Innovation Manager Uwe Pöpping introduced our Innovation Lab CLEWATEC to international investors and corporates at the High-Tech Venture Days in Dresden.
In September 2020, our Lab Scientist Florian Ristau and our Lab Engineer Mathias Menzel set up a sparger test module at a nearby wastewater treatment plant. The sparger test module is used to observe the long-term performance of spargers and other gas injection devices in real conditions of an activated sludge basin. Currently, a sparger concept with microperforated pipes of a partner is tested and its pressure drop and flow rate are logged in a digital control unit.
In August 2020, our Lab Scientist Nadine Matzke installed an inline spectrometer from CLEWATEC at the test facilities of our project partner Air Liquide in Krefeld, Germany. She furthermore calibrated the spectrometer and received some initial test results. The final goal is to use the spectrometer to detect the amount of micropollutants in the wastewater.
In July 2020, the Lab Coordinator Mr. Sebastian Reinecke gave a HZDR research talk video presentation about “Methods for more efficiency in water resource recovery”. The talk presented the current associated scientific topics in the fields of fluid dynamics and (bio-)chemical engineering and introduced the sustainable technological and system approaches covered by the new Helmholtz-Innovation Lab CLEWATEC.
Our Lab Scientist Mr. Ehsan Mohseni published a paper “Dynamics of bubble formation at micro-orifices under constant gas flow conditions” in the “International Journal of Multiphase Flow” where he investigated the dynamics of bubble formation from submerged orifices at a comprehensive range of gas flow rates for a system of air and deionized water. He discovered that the bubble formation at micro-orifices cannot be described by quasi-static force balance and the ratio of the bubble base expansion decreases by increasing the size of the orifice.
The CLEWATEC Team is now complete. Besides the Lab Coordinator Mr. Sebastian Reinecke, the project management is supported by the Innovation Manager Mr. Uwe Pöpping, the Marketing & Controlling Manager Mrs. Susann Riedel and the Business Development Manager Mr. Alejandro Parra. The expert team consists of three Lab Scientists, Mrs. Nadine Matzke, Mr. Florian Ristau and Mr. Ehsan Mohseni and the Lab Engineer Mr. Mathias Menzel.
In April 2020, CLEWATEC expanded its expert team with two new lab scientists, Mrs. Nadine Matzke and Mr. Florian Ristau. Mrs. Matzke studied chemical engineering and has an extensive knowledge in wastewater treatment, process engineering as well as sensor and measurement techniques. Mr. Ristau studied water management with a special focus on wastewater treatment systems and energy efficiency and has previously worked at wastewater treatment plants.
In March 2020, CLEWATEC recruited a new Business Development Manager, Mr. Alejandro Parra. He will be responsible for the search and acquisition of new partners for the CLEWATEC network. Mr. Parra studied water resource engineering and management and has a solid knowledge of sustainable wastewater treatment systems. He is interested in innovative and sustainable technologies and has already contributed with his skills in applied research and project management in previous projects.
In February 2020, students from TU Dresden specializing in Hydro Sciences visited HZDR where they learned about the CLEWATEC project and visited the CLEWATEC experimental facilities.
During a company visit to HZDR, the Clean Water Technology Lab was also presented to employees of Stadtentwässerung Dresden GmbH, the urban waste-water drainage service provider for the city of Dresden.
In January 2020, representatives from our project partner Air Liquide came to HZDR for a training in gas bubble size measurements and oxygen transfer measurements.
Official start of the project.
For more information, please read our Press Release from Sept. 2019.