Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

 
 
Session Overview
Session
Plenary 13: Sewer-System Impacts 1 - CSOs
Time:
Friday, 26/Aug/2022:
10:50am - 12:20pm

Session Chair: Jeroen Langeveld
Location: Lecture Hall BMT

BMTEG138 (HS BMT), Biomedical Engineering Building at Stremayrgasse 16, 8010 Graz, ground floor

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Presentations
10:50am - 11:10am

Verification of the Effectiveness of HydroSpin (WSCD)

Ingo Mayer1, Jörg Steinhardt2, Abel Tagne1

1Steinhardt GmbH - Wassertechnik, Germany; 2Steinhardt Consulting GmbH

HydroSpin ist ein Wasseroberflächenkontrollgerät (WSCD), das in CSO-Kammern installiert und entwickelt wurde, um das Einleiten von Schwimmfähigen in aufnehmende Gewässer zu reduzieren. HydroSpin induziert einen Wirbelstrom, der eingehende Floatables in Richtung des nachgeschalteten Abwasserkanals (Auslass) leitet. Dieses System wird ausschließlich durch den Abwasserstrom mit Strom versorgt, so dass keine Stromversorgung erforderlich ist.

In dieser Studie wurden sowohl Labortests als auch numerische Modellierungen durchgeführt, um den Einfluss von sich ändernden Wasserständen und installierten Durchflussreglern auf die Effizienz des HydroSpin-Systems zu untersuchen. Aus diesen Untersuchungen werden mögliche technische Anpassungen des Systems abgeleitet.



11:10am - 11:30am

HAPPy to Control: A Heuristic And Predictive Policy for RTC

Job Augustijn van der Werf1, Zoran Kapelan1, Jeroen Langeveld1,2

1Delft University of Technology, Netherlands, The; 2Partners2Urbanwater

Real Time Control (RTC) can improve the functioning of a sewer system and real-time optimisation tends to function best. However, for larger system, this optimisation-based, global form of control cannot always be applied due to computational limitations. Dynamically selecting the most relevant actuators for optimisation and thereby reducing the search space and model complexity is presented here as an effective potential: combining heuristic and model predictive control in a dynamic policy. This method was compared to a full-system MPC and shown only minor efficacy loss, whilst allowing for faster convergence to an optimal set op actuator settings.



11:30am - 11:50am

How do you sample annual pollution loads at sewer overflows and outlets during rainy weather?

Guenter GRUBER1, Markus PICHLER1, Thomas HOFER2, Roman MAIER3, Manfred CLARA4

1Graz University of Technology, Graz, Austria; 2Ingenieurgemeinschaft DI Anton BILEK und DI Gunter KRISCHNER GmbH, Graz, Austria; 3Holding Graz Wasserwirtschaft, Graz, Austria; 4Umweltbundesamt GmbH (Environment Agency Austria), Vienna, Austria

Stormwater runoff from urban areas can contain a large number of micropollutants. Within the Austrian TEMPEST project, volume-proportional annual composite samples were to be generated in order to be able to make a metrological estimation of the discharged annual micropollutant loads in the investigated sewer systems. The sampling strategy chosen, the experience gained during sampling and the results obtained from sampling in a combined and in a stormwater sewer in the TEMPEST investigation area South in Graz, Austria are described and discussed in this paper.



11:50am - 12:10pm

Bacteroides community fingerprints for SourceTracker: a powerful tool to track sewage contamination in recreational water

Yussi M. Palacios, Rebekah Henry, Christelle Schang, Peter Kolotelo, David T. McCarthy

Monash University, Australia

This study used SourceTracker (ST) to compare the proportion of contamination from raw sewage and animal faeces in recreational water, using the universal V3-V4 region of the 16S rRNA gene (MC) versus the Bacteroides specific 16 rRNA gene (BC). Positive correlation found between E.coli concentration and raw sewage contamination using Bacteroides communities (BC) as a fingerprint. Using BC, a higher faecal contamination attribution was observed than by using MC. These results have increased the capacity of ST for microbial source tracking, which is crucial for its possible implementation in management and mitigation strategies activities by public health authorities.



 
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