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  • 1
    Online Resource
    Online Resource
    Augmented Reality als Lernmedium: Potenziale und Implikationen
    Chemnitz University of Technology ; 2018
    In:  aw&I Conference Vol. 3 ( 2018-10-01)
    Details
    In: aw&I Conference, Chemnitz University of Technology, Vol. 3 ( 2018-10-01)
    Abstract: Durch den technischen Fortschritt der letzten Jahre rücken Augmented Reality – Anwendungen (AR) als Lernmedien immer mehr in den Fokus der aktuellen Lehr-Lern-Forschung. Aus didaktischer Sicht besitzt AR als Lernmedium Potenziale, die es von bisherigen Medien unterscheidet. Andererseits ergeben sich durch die Nutzung von AR jedoch auch neue Herausforderungen, die noch zu lösen sind. Am Beispiel eines konkreten Lernszenarios werden die didaktischen Potenziale von AR vorgestellt und die sich ergebenden Herausforderungen beschrieben. Das Lernszenario wurde mit Hilfe der App AugView realisiert und in die Lehre im Fachbereich Umweltingenieurwesen integriert. Die App stellt im Untergrund verborgene leitungsgebundene Wasserinfrastruktur dar. Zu den positiven didaktischen Eigenschaften zählt u.a. die zeitlich und örtlich kohärente, gemeinsame Darstellung von Objekt und erklärenden Zusatzinformationen (Kontiguitätsprinzip). Durch kollaboratives Arbeiten mit der App im Rahmen von Exkursionen wird situatives Lernen und gemeinsame Wissenskonstruktion gefördert. Zu den ungelösten Herausforderungen zählt aktuell noch der technische Aufwand. Da die GPS-Positionierung auf handelsüblichen Tablets nicht ausreichend genau ist, sind vergleichsweise teure Zusatzsysteme zur exakteren Positionierung notwendig. Weitere Herausforderung ist der Datenschutz. Digitale Repräsentationen der Leitungsnetze sind zwar beim lokalen Versorger vorhanden. Jedoch gibt es Sicherheitsbedenken, diese für die Lehre vollständig öffentlich verfügbar zu machen.
    Type of Medium: Online Resource
    ISSN: 2569-3468
    URL: Article
    DOI: 10.14464/awic.v3i0.282
    Language: Unknown
    Publisher: Chemnitz University of Technology
    Publication Date: 2018
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  • 2
    Online Resource
    Online Resource
    Photocatalytic ozonation in an immersion rotary body reactor for the removal of micro-pollutants from the effluent of wastewater treatment plants
    IWA Publishing ; 2022
    In:  Water Science and Technology Vol. 85, No. 1 ( 2022-01-01), p. 535-548
    Details
    In: Water Science and Technology, IWA Publishing, Vol. 85, No. 1 ( 2022-01-01), p. 535-548
    Abstract: Carrier-bound titanium dioxide catalysts were used in a photocatalytic ozonation reactor for the degradation of micro-pollutants in real wastewater. A photocatalytic immersion rotary body reactor with a 36-cm disk diameter was used, and was irradiated using UV-A light-emitting diodes. The rotating disks were covered with catalysts based on stainless steel grids coated with titanium dioxide. The dosing of ozone was carried out through the liquid phase via an external enrichment and a supply system transverse to the flow direction. The influence of irradiation power and ozone dose on the degradation rate for photocatalytic ozonation was investigated. In addition, the performance of the individual processes photocatalysis and ozonation were studied. The degradation kinetics of the parent compounds were determined using liquid chromatography tandem mass spectrometry. First-order kinetics were determined for photocatalysis and photocatalytic ozonation. A maximum reaction rate of the reactor was determined, which could be achieved by both photocatalysis and photocatalytic ozonation. At a dosage of 0.4 mg /mg DOC, the maximum reaction rate could be achieved using 75% of the irradiation power used for sole photocatalysis, allowing increases in the energetic efficiency of photocatalytic wastewater treatment processes. The process of photocatalytic ozonation is suitable to remove a wide spectrum of micro-pollutants from wastewater.
    Type of Medium: Online Resource
    ISSN: 0273-1223 , 1996-9732
    URL: Article
    DOI: 10.2166/wst.2021.617
    Language: English
    Publisher: IWA Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 764273-8
    detail.hit.zdb_id: 2024780-1
    SSG: 14
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    Online Resource
  • 3
    Online Resource
    Online Resource
    OPTIMIZING OPERATION OF WASTEWATER TREATMENT PLANTS BY OFFLINE AND ONLINE COMPUTER SIMULATION
    IWA Publishing ; 1994
    In:  Water Science and Technology Vol. 30, No. 2 ( 1994-07-01), p. 165-174
    Details
    In: Water Science and Technology, IWA Publishing, Vol. 30, No. 2 ( 1994-07-01), p. 165-174
    Abstract: Computer simulation of activated sludge plant for nitrogen removal has become a reliable tool to predict the behaviour of the plant Models including biological phosphorus removal still require some practical experience but they should be available soon. This will offer an even wider range than today's work with nitrogen removal. One major benefit of computer simulation of wastewater treatment plants (WTP) is the optimization of operation. This can be done offline if hydrographs of a plant are collected and computer work is done with “historical” analysis. With online simulation the system is fed with hydrographs up to the actual time. Prognosis can be done from the moment of the computer work based on usual hydrographs. The work of the authors shows how accuratly a treatment plant can be described, when many parameters are measured and available as hydrographs. A very careful description of all details of the special plant is essential, requiring a flexible simulation tool. Based on the accurate simulation a wide range of operational decisions can be evaluated. It was possible to demonstrate that the overall efficiency in nitrogen removal and energy consumption of ml activated sludge plant can be improved.
    Type of Medium: Online Resource
    ISSN: 0273-1223 , 1996-9732
    URL: Article
    DOI: 10.2166/wst.1994.0040
    Language: English
    Publisher: IWA Publishing
    Publication Date: 1994
    detail.hit.zdb_id: 764273-8
    detail.hit.zdb_id: 2024780-1
    SSG: 14
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    Online Resource
  • 4
    Online Resource
    Online Resource
    Characterization of domestic graywater and graywater solids
    IWA Publishing ; 2018
    In:  Water Science and Technology Vol. 77, No. 5 ( 2018-03-12), p. 1196-1203
    Details
    In: Water Science and Technology, IWA Publishing, Vol. 77, No. 5 ( 2018-03-12), p. 1196-1203
    Abstract: The knowledge of loads and concentrations is fundamental for the design of graywater treatment units, but the data on the characteristics of graywater and in particular graywater solids are weak. As general design values regarding graywater treatment facilities are not available for Germany, the objective of this article is to elaborate the characteristics of graywater and graywater solids. This paper describes the results of six sampling campaigns carried out on graywater systems in the German cities Berlin, Lübeck and Kiel. All graywater samples were collected proportional to the flow and the graywater solids were gathered separately. The collected data include graywater volumes and characteristics regarding the organic pollution (chemical oxygen demand (COD), 5-day biochemical oxygen demand (BOD5)) and nutrients (total nitrogen (TN), total phosphorus (TP)). The graywater volume fluctuated depending on the location. The specific average flow was 68 litre per inhabitant per day (L/inh.d). Inhabitant-specific loads of 49.3 gCODt/inh·d, 28 gBOD5/inh.d, 1 gTNt/inh.d and 0.38 gTPt/inh.d (subscript ‘t’ = total) were found. Information about the composition of graywater solids in terms of quantity and quality is seriously lacking. Therefore, graywater solids were examined with respect to organic matter (COD) and nutrients (TN, TP). The contribution of graywater solids with particle sizes over 200 microns in relation to the total inhabitant-specific load was approximately 3–8% depending on the parameter. The qualitative and quantitative characteristics of the investigated graywater fractions may serve as a base for the estimation of design values.
    Type of Medium: Online Resource
    ISSN: 0273-1223 , 1996-9732
    URL: Article
    DOI: 10.2166/wst.2017.627
    Language: English
    Publisher: IWA Publishing
    Publication Date: 2018
    detail.hit.zdb_id: 764273-8
    detail.hit.zdb_id: 2024780-1
    SSG: 14
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    Online Resource
  • 5
    Online Resource
    Online Resource
    Approaches and Processes for Material Separation from Wastewater Streams
    Wiley ; 2007
    In:  ChemInform Vol. 38, No. 14 ( 2007-04-03)
    Details
    In: ChemInform, Wiley, Vol. 38, No. 14 ( 2007-04-03)
    Type of Medium: Online Resource
    ISSN: 0931-7597 , 1522-2667
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.1002/chin.v38:14
    DOI: 10.1002/(ISSN)1522-2667
    DOI: 10.1002/chin.200714229
    Language: English
    Publisher: Wiley
    Publication Date: 2007
    detail.hit.zdb_id: 2110203-X
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  • 6
    Online Resource
    Online Resource
    Integrated urban water management: development of an adapted management approach : Case study area: Darkhan, Kharaa catchment, Mongolia
    Springer Science and Business Media LLC ; 2015
    In:  Environmental Earth Sciences Vol. 73, No. 2 ( 2015-1), p. 709-718
    Details
    In: Environmental Earth Sciences, Springer Science and Business Media LLC, Vol. 73, No. 2 ( 2015-1), p. 709-718
    Type of Medium: Online Resource
    ISSN: 1866-6280 , 1866-6299
    URL: Article
    DOI: 10.1007/s12665-014-3701-z
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2015
    detail.hit.zdb_id: 2493699-6
    SSG: 13
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  • 7
    Online Resource
    Online Resource
    Auswirkungen eines technischen Paradigmenwechsels auf die wasserwirtschaftliche Organisation in strukturschwachen ländlichen Räumen
    Oekom Publishers GmbH ; 2015
    In:  Raumforschung und Raumordnung | Spatial Research and Planning Vol. 73, No. 5 ( 2015-10-31)
    Details
    In: Raumforschung und Raumordnung | Spatial Research and Planning, Oekom Publishers GmbH, Vol. 73, No. 5 ( 2015-10-31)
    Abstract: Structurally weak rural areas in Germany partially are confronted with enormous challenges. It is becoming increasingly difficult to provide these regions with an adequate infrastructure to secure equivalent living conditions. Alternative concepts such as New Sanitation Systems (NASS) can offer an essential contribution. The main idea of NASS is the driving of resources within urban water circular paths. Therefore a separated collection of waste water flows through a technical re-design of infrastructure systems becomes necessary. Winning and utilizing resources offers a new perspective of value adding for urban water management. The paper addresses the organizational problems regarding the background and deficits of conventional sewage systems. Especially in the context of important changes, such as demographic development and climate change, new framework requirements for planning need to be taken into account. Therefore it is investigated which constraints and challenges influence the implementation of new technical and organizational solutions for sanitation systems.  
    Type of Medium: Online Resource
    ISSN: 1869-4179 , 0034-0111
    URL: Article
    DOI: 10.1007/s13147-015-0362-7
    RVK:
    PM 6970
    RVK:
    PM 100
    Language: Unknown
    Publisher: Oekom Publishers GmbH
    Publication Date: 2015
    detail.hit.zdb_id: 2523252-6
    detail.hit.zdb_id: 506141-6
    SSG: 20,1
    SSG: 8,1
    SSG: 3,8
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  • 8
    Online Resource
    Online Resource
    DataSheet1.docx
    Frontiers Media SA ; 2022
    In:  Frontiers in Environmental Science Vol. 10 ( 2022-11-30)
    Details
    In: Frontiers in Environmental Science, Frontiers Media SA, Vol. 10 ( 2022-11-30)
    Abstract: This work presents a modular Vertical Green System (VGS) for gray water treatment, developed at the Bauhaus-Universität Weimar. The concept was transformed into a field study with four modules built and tested with synthetic gray water. Each module set contains a small and larger module with the same treatment substrate and was fed hourly. A combination of lightweight structural material and biochar of agricultural residues and wood chips was used as the treatment substrate. In this article, we present the first 18 weeks of operation. Regarding the treatment efficiency, the parameters chemical oxygen demand (COD), total phosphorous (TP), ortho-phosphate (ortho-P), total bound nitrogen (TN b ), ammonium nitrogen (NH 4 -N), and nitrate nitrogen (NO 3 -N) were analyzed and are presented in this work. The results of the modules with agricultural residues are promising. Up to 92% COD reduction is stated in the data. The phosphate and nitrogen fractions are reduced significantly in these modules. By contrast, the modules with wood chips reduce only 67% of the incoming COD and respectively less regarding phosphates and the nitrogen fraction.
    Type of Medium: Online Resource
    ISSN: 2296-665X
    URL: Article
    URL: Article
    DOI: 10.3389/fenvs.2022.976005
    DOI: 10.3389/fenvs.2022.976005.s001
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2022
    detail.hit.zdb_id: 2741535-1
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  • 9
    Online Resource
    Online Resource
    Dezentrale Grauwasseraufbereitung mit schwerkraftbetriebenen Membransystemen
    Springer Science and Business Media LLC ; 2020
    In:  Wasser und Abfall Vol. 22, No. 7-8 ( 2020-08), p. 31-36
    Details
    In: Wasser und Abfall, Springer Science and Business Media LLC, Vol. 22, No. 7-8 ( 2020-08), p. 31-36
    Type of Medium: Online Resource
    ISSN: 1436-9095 , 2192-8754
    URL: Article
    DOI: 10.1007/s35152-020-0239-0
    Language: German
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 2389047-2
    detail.hit.zdb_id: 1467289-3
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  • 10
    Online Resource
    Online Resource
    Das Fernstudium „Wasser und Umwelt“ an der Bauhaus-Universität Weimar
    Springer Science and Business Media LLC ; 2016
    In:  Wasser und Abfall Vol. 18, No. 12 ( 2016-12), p. 19-23
    Details
    In: Wasser und Abfall, Springer Science and Business Media LLC, Vol. 18, No. 12 ( 2016-12), p. 19-23
    Type of Medium: Online Resource
    ISSN: 1436-9095 , 2192-8754
    URL: Article
    DOI: 10.1007/s35152-016-0121-2
    Language: German
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 2389047-2
    detail.hit.zdb_id: 1467289-3
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