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
Date: Friday, 26/Aug/2022
8:00am - 8:50amRegistration 3: Registration and Welcome Coffee
Location: Foyer BMT
8:50am - 10:20amPlenary 12: In-Sewer Processes 3 - Sediments
Location: Lecture Hall BMT
Session Chair: Kapil Gupta
8:50am - 9:10am

Improving sediment monitoring strategies based on SWMM-HEAT and temperature sensors

Manuel Regueiro-Picallo1,2, Alejandro Figueroa1, Jörg Rieckermann1

1Eawag, Swiss Federal Institute of Aquatic Science and Technology; 2Universidade da Coruña

  • A generally-applicable approach was developed to identify potential locations where sediment accumulation occur based on sewer network hydrodynamics.
  • Sewer network thermodynamics were used to simulate sewer temperature patterns from which sediment accumulation could be estimated.
  • The combination of previous analyses led to an effective strategy for determining the deployment of sediment accumulation monitoring devices.

9:10am - 9:30am

Validation of sediment transport models in a stormwater network using high-resolution turbidity data

Karen Lorena Rojas-Gomez1,2, Julian Reyes-Silva2, Jakob Benisch2, Björn Helm2, Manfred Schütze3, Peter Krebs2

1Helmholtz-Centre of Environmental Research – UFZ, Germany; 2Technische Universität Dresden, Institute of Urban Water Management; 3ifak e. V. Magdeburg, Department Water and Energy

Predicting sediment transport at urban catchment scale is a challenge. In this study we aimed to validated a new simplified approach to simulate sediment transport in a stormwater network. We used turbidity and discharge data measured at the outlet of a small urban catchment in Dresden, Germany. The high-resolution data was useful for calibration and validation of the couple model developed using the new approach. The representation of the mobilisation of sediments in the stormwater network was significantly improved. This simplified approach allows a more accurate prediction of the total transported mass of sediments during a rainfall event.

9:30am - 9:50am

First flush assumptions in pollution management for separate stormwater systems: debunking a classical urban (drainage) myth

Ditte Marie Reinholdt Jensen1,2,3, Santiago Sandoval4,5, Jean-Luc Bertrand-Krajewski4, Peter Steen Mikkelsen1, Luca Vezzaro1

1Technical University of Denmark, Denmark; 2Chinese Academy of Sciences, China; 3Sino-Danish Center for Education and Research, Denmark & China; 4Institut National des Sciences Appliquées, France; 5University of applied Sciences of Western Switzerland, Switzerland

We reviewed the various definitions of First Flush (FF) investigated in the last half century.

We applied the different FF definitions to a high-resolution dataset of 363 events.

We showed that First Flush is observed in only a minor fraction of the observed events, highlighting the environmental risks using the FF concept for pollution control.

9:50am - 10:10am

New approach for condition-based sewer inspection combined with demand-based sewer cleaning assisted through innovative tools

Thomas Walter Ertl1, Hanns Plihal2, Karsten Kerres3

1University of Natural Resources and Life Sciences, Vienna, Austria; 2AEP Consulting ZT GmbH, Achau, Austria; 3University of Applied Sciences, Aachen, Germany

In Austria and Germany many sewer operators want to turn from mandatory interval-based cleaning and inspection to demand-based cleaning and condition-based inspection strategies. This requires new tools and technologies. So-called manhole-zoom cameras have been developed for a quick view into sewers. The novel aspect of that approach is the combination of a demand-based cleaning strategy with a condition-based inspection strategy by using alternative inspection tools. To conclude the new approach is promising for optimization of operational issues in sewer management and should be implemented in sewer utilities.

10:20am - 10:50amCoffee 5: Coffee Break
Location: Foyer BMT
10:50am - 12:20pmPlenary 13: Sewer-System Impacts 1 - CSOs
Location: Lecture Hall BMT
Session Chair: Jeroen Langeveld
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.

12:20pm - 1:20pmLunch Break 3: Lunch Break - Buffet
Location: Foyer BMT
1:20pm - 2:30pmPlenary 14: Monitoring and Associated Technologies 3 - New Concepts
Location: Lecture Hall BMT
Session Chair: Slobodan Djordjević
1:20pm - 1:40pm

An innovative, low-cost, small MAD-AS sampler for wastewater sampling in the sewage network


Monash University, Australia

An innovative low-cost sampler is developed which can be easily installed in the sewage network to take time-weighted composite samples. The sampler can fulfil different sampling requirements by uploading a custom program to the Arduino based sampler. After the comparison between the innovative low-cost sampler and the traditional autosampler, the results showed that the innovative low-cost sampler is able to provide a reliable result in bacteria indicators (E.coli and Enterococci) and specific virus (SARS-CoV-2). In this case, the innovative low-cost sampler can be applied in wastewater sampling projects for high spatially distributed sewage sampling.

1:40pm - 2:00pm

Molecular analysis of soil and water from urban flood sites to identify seasonal changes in health risk from microbial communities

Sophie Scutt1, James Shucksmith1, Henriette Jensen1, Jacqueline Diaz-Nieto2, Isabel Douterelo1

1Univeristy of Sheffield, United Kingdom; 2Severn Trent Water, United Kingdom


  • Effects of climate change- causing extreme hydrological events- increases occurences of urban floods.
  • Floodwater contains potentially dangerous levels of disease causing pathogenic bacteria,
  • Lab and field work, along with flow cytometry and next generation DNA sequencing used to determine the behaviour of pathogens and their mobility and movement in urban soils.

2:00pm - 2:20pm

Characterisation and development of a novel low-cost radar velocity and depth sensor

Stephen Catsamas, Baiqian Shi, Miao Wang, David McCarthy

Monash Univserity, Australia

The monitoring of urban waste and stormwater systems is fundimental to the assesment of their health and functionality. Current commercial solutions for monitoring water depth and velocity are expensive and labour intensive to install. New low-cost sensing technologies achieve orders of magnitude improvements in deployment labour and costs, enabling monitoring of waterways at a higher resolution than previously feasible. Here we present the development and characterisation of a field-ready radar depth and velocity sensor. We find that the sensor presents a linear response with error in the gradient of less than 6% and 4% for velocity and depth respectively.

2:30pm - 3:00pmClosing Ceremony: Closing Ceremony
Location: Lecture Hall BMT
Session Chair: Dirk Muschalla
Session Chair: Albert Wilhelm König
3:00pm - 5:00pmTechnical Tour 3: Technical Tours Central Storage Tunnel 3
Location: Field trip
Session Chair: Guenter GRUBER

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