@inproceedings{PreussZahnThuermer, author = {Preuß, Volker and Zahn, Lena and Th{\"u}rmer, Konrad}, title = {Untersuchungen zur Entfernung von Humnistoffen in Trinkw{\"a}ssern durch Ultrafiltration}, series = {Begleitbuch zur 11. Aachener Tagung Wassertechnologie, 27. - 28. Oktober 2015, Verfahren der Wasseraufbereitung und Abwasserbehandlung}, booktitle = {Begleitbuch zur 11. Aachener Tagung Wassertechnologie, 27. - 28. Oktober 2015, Verfahren der Wasseraufbereitung und Abwasserbehandlung}, editor = {Pinnekamp, Johannes and Wessling, Matthias}, publisher = {Mainz}, address = {Aachen}, isbn = {978-3-95886-056-8}, pages = {399 -- 406}, language = {de} } @inproceedings{PreussZahnThuermer, author = {Preuß, Volker and Zahn, Lena and Th{\"u}rmer, Konrad}, title = {Untersuchungen zur Entfernung von Huminstoffen aus Trinkw{\"a}ssern durch Ultrafiltration}, series = {Verfahren der Wasseraufbereitung und Abwasserbehandlung, 11. Aachener Tagung Wassertechnologie, Begleitbuch, 27.-28. Oktober 2015}, booktitle = {Verfahren der Wasseraufbereitung und Abwasserbehandlung, 11. Aachener Tagung Wassertechnologie, Begleitbuch, 27.-28. Oktober 2015}, address = {Aachen}, isbn = {978-3-95886-056-8}, pages = {399 -- 406}, language = {de} } @inproceedings{SchoepkePreussZahnetal., author = {Sch{\"o}pke, Ralph and Preuß, Volker and Zahn, Lena and Th{\"u}rmer, Konrad}, title = {Modeling the changes in Water quality of AMD along the flow path}, series = {IMWA 2016 - Mining Meets Water - Conflicts and Solutions}, booktitle = {IMWA 2016 - Mining Meets Water - Conflicts and Solutions}, editor = {Drebenstedt, Carsten and Paul, Michael}, publisher = {TU Bergakademie Freiberg, Institute of Mining and Special Civil Engineering}, address = {Freiberg}, isbn = {978-3-86012-533-5}, pages = {1195 -- 1201}, language = {en} } @inproceedings{SchoepkePreussZahnetal., author = {Sch{\"o}pke, Ralph and Preuß, Volker and Zahn, Lena and Th{\"u}rmer, Konrad and Totsche, Oliver}, title = {Control of the remediation of anoxic AMD groundwater by sulphate reduction in a subsoil reactor}, series = {13th International Mine Water Association Congress - Mine Water \& Circular Economy, June 25-30, 2017 Lappeenranta, Finland, vol. 1}, booktitle = {13th International Mine Water Association Congress - Mine Water \& Circular Economy, June 25-30, 2017 Lappeenranta, Finland, vol. 1}, editor = {Wolkersdorfer, Christian and Sartz, Lotta and Sillanp{\"a}{\"a}, Mikka and H{\"a}kkinen, Antti}, publisher = {Lappeenranta University of Technology}, address = {Lappeenranta, Finland}, isbn = {978-952-335-066-3}, pages = {502 -- 509}, abstract = {Groundwater containing high amounts of products of pyrite weathering flows into receiving waters in consequence of lignite mining for a number of years. Iron hydroxides causing turbidity and silting will strongly affect the river Spree for many decades. In addition to liming acidic surface waters and the conventional treating of mine waters, microbial sulphate reduction of the inflowing anoxic AMD groundwater is tested for long-term remediation. During a pilot project at the location 'Ruhlm{\"u}hle' in north Saxony since end of 2014 glycerin as a carbon source and nutrient solutions of N and P are infiltrated in an anoxic AMD groundwater stream by lances ([1]). Planning and operation were carried out based on a model. The complex reaction mechanisms in the aquifer were formulated using phreeqc2. They were applied to the flow path from the infiltration to the measuring points as a mixed cell model. Based on literature research as well as laboratory experiments and pilot tests ([2], [3]), the biochemistry of the sulphate reduction was drafted as an extensive reaction term refined by adaption to experimental results later on. To describe the sorption processes on the solid matrix of the aquifer, the surface 'Sandw_OH' had to be defined and parameterized. The behavior of metabolites and humic substances could only be considered with the aid of new reaction models. On the basis of intensive preliminary investigations, the mixed cell model developed for the pilot sites can be applied to other glacial aquifers. Moreover, it was possible to elucidate numerous side reactions and to describe them in the model. Ultimately, the process of sulphate reduction is available for the treatment of groundwater containing high amounts of products of pyrite weathering. It can be applied at the source as well as on the flow path. Design and control of the variety of overlapping processes is only possible by means of the developed model approaches.}, language = {en} } @inproceedings{PreussZahnKoch, author = {Preuß, Volker and Zahn, Lena and Koch, Thomas}, title = {Verfahrenstechnische Optimierung einer Zweischichtfiltration - Untersuchungen zu den Ursachen erh{\"o}hter Filterwiderst{\"a}nde}, series = {Verfahren der Wasseraufbereitung und Abwasserbehandlung, 12. Aachener Tagung Wassertechnologie, 24.-25. Oktober 2017, Aachen, Eurogress}, booktitle = {Verfahren der Wasseraufbereitung und Abwasserbehandlung, 12. Aachener Tagung Wassertechnologie, 24.-25. Oktober 2017, Aachen, Eurogress}, publisher = {Druck- und Verlagshaus Mainz}, address = {Aachen}, isbn = {978-3-95886-186-2}, pages = {153 -- 158}, language = {de} }