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Boogaard, F.C. (author), Van de Ven, F. (author), Langeveld, J.G. (author), Van de Giesen, N. (author)
Stormwaters, flowing into storm sewers, are known to significantly increase the annual pollutant loads entering urban receiving waters and this results in significant degradation of the receiving water quality. Knowledge of the characteristics of stormwater pollution enables urban planners to incorporate the most appropriate stormwater...
journal article 2014
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Van Mill, G. (author), Langeveld, J.F. (author), Sikkes, M. (author), Van Nieuwenhuizen, A. (author)
Het meten van hydraulisch functioneren van rioolstelsels is inmiddels gemeengoed in Nederland. Desondanks zijn de ervaringen niet onverdeeld positief en laat de dataopbrengst nogal eens te wensen over. Bij Waterschap De Dommel is in het kader van het Kallisto-project een omvangrijk meetnet met onder meer meetopstellingen bij ruim 200 overstorten...
journal article 2013
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Nieuwenhuis, E.M. (author), Cuppen, E.H.W.J. (author), Langeveld, J.G. (author), de Bruijn, J.A. (author)
Gedreven door ontwikkelingen zoals klimaatverandering, verstedelijking en digitalisering zien we in het stedelijk watersysteem steeds vaker oplossingen ‘buiten de buis’. Oplossingen zoals publieke pleinen met een waterbergende functie, polderdaken met een dynamische waterberging, zwembaden verwarmd met warmte uit (afval)water; het zijn allemaal...
journal article 2019
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Stanic, N. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Rioleringsbeheer is een eerste vereiste om het gewenste niveau van functioneren van de riolering te behouden. Welke inspanning op het gebied van rioleringsbeheer nodig is om een bepaald niveau van functioneren te bereiken is onduidelijk, omdat zowel de processen in als de structuur van de rioolstelsels complex zijn. Een belangrijke vraag hierbij...
journal article 2012
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Van Riel, W.A.P. (author), Langeveld, J.G. (author), Herder, P.M. (author), Clemens, F.H.L.R. (author)
Passend rioleringsbeheer is nodig om voldoende dienstlevering te balanceren met investeringskosten. Besluitvorming binnen rioleringsbeheer kan echter bemoeilijkt worden door gebrek aan data en interacties met verschillende actoren. Deze beperkingen zorgen veelal voor niet heldere en niet reproduceerbare besluitvormingsprocessen, die voornamelijk...
journal article 2013
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Kouijzer, Joop J.P. (author), Lattwein, Kirby R. (author), Beekers, Inés (author), Langeveld, Simone A.G. (author), Leon-Grooters, Mariël (author), Strub, Jean Marc (author), Oliva, Estefania (author), de Jong, N. (author), van der Steen, A.F.W. (author)
Bacterial biofilms are a huge burden on our healthcare systems worldwide. The lack of specificity in diagnostic and treatment possibilities result in difficult-to-treat and persistent infections. The aim of this in vitro study was to investigate if microbubbles targeted specifically to bacteria in biofilms could be used both for diagnosis as...
journal article 2021
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Rietveld, M.W.J. (author), Clemens, F.H.L.R. (author), Langeveld, J.G. (author)
Urban runoff remobilises solids and their associated pollutants from urban-built environments and transports them to drainage systems via gully pots. This study presents an extensive monitoring campaign on the solids loading to drainage systems, including 104 gully pots as sampling locations and lasting 2 years. The solids loading is modelled...
journal article 2022
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Post, J.A.B. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
The performance of lateral house connections has a direct impact on sewer serviceability. Despite the potential consequences of a blockage, these components are generally maintained with a reactive approach. As inspection data on the condition of lateral house connections are scarce, this study adopts a statistical procedure to support...
journal article 2016
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Stanic, N. (author), Langeveld, J.G. (author), Salet, Theo (author), Clemens, F.H.L.R. (author)
Drill core samples are taken in practice for an analysis of the material characteristics of concrete pipes in order to improve the quality of the decision-making on rehabilitation actions. Earlier research has demonstrated that core sampling is associated with a significant uncertainty. In this paper, the results of core samples are compared...
journal article 2016
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Post, J.A.B. (author), Pothof, I.W.M. (author), Dirksen, J. (author), Baars, E. J. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Gully pots are essential assets designed to relief the downstream system by trapping solids and attached pollutants suspended in runoff. This study applied a methodology to develop a quantitative gully pot sedimentation and blockage model. To this end, sediment bed level time series from 300 gully pots, spanning 15 months, were collected. A...
journal article 2016
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van Daal-Rombouts, P.M.M. (author), Sun, Siao (author), Langeveld, J.G. (author), Bertrand-Krajewski, J.-L. (author), Clemens, F.H.L.R. (author)
Optimisation or real time control (RTC) studies in wastewater systems increasingly require rapid simulations of sewer systems in extensive catchments. To reduce the simulation time calibrated simplified models are applied, with the performance generally based on the goodness of fit of the calibration. In this research the performance of three...
journal article 2016
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van Riel, W. (author), Post, J.A.B. (author), Langeveld, J.G. (author), Herder, P.M. (author), Clemens, F.H.L.R. (author)
Operational decision-making processes for networked infrastructure management often occur as a multi-actor planning problem, implying these are based on negotiations between different stakeholders in addition to available system quality information. As such, does more accurate data about actual structural condition lead to other or better...
journal article 2016
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Hendriks, A.T.W.M. (author), Langeveld, J.G. (author)
journal article 2017
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van Daal-Rombouts, P.M.M. (author), Benedetti, L (author), Jonge, J (author), Weijers, S (author), Langeveld, J.G. (author)
Real time control (RTC) is increasingly seen as a viable method to optimise the functioning of wastewater systems. Model exercises and case studies reported in literature claim a positive impact of RTC based on results without uncertainty analysis and flawed evaluation periods. This paper describes two integrated RTC strategies at the wastewater...
journal article 2017
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van Daal-Rombouts, P.M.M. (author), Gruber, Günter (author), Langeveld, J.G. (author), Muschalla, Dirk (author), Clemens, F.H.L.R. (author)
Real time control (RTC) is generally viewed as a viable method for optimising the performance of urban wastewater systems. A literature review on the performance evaluation of RTC demonstrated a lack of consensus on how to do this. Two main deficiencies were identified: omitting uncertainty analysis and applying limited evaluation periods. A...
journal article 2017
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van Bijnen, J.A.C. (author), Korving, J.L. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Due to a variety of contaminants in floodwater, exposure to urban pluvial flooding may pose a health risk to humans. In-sewer defects may cause increased pluvial flooding, possibly increasing health risks. This paper addresses the impact of in-sewer defects on urban pluvial flooding and, subsequently, on infection probabilities for humans. As...
journal article 2018
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Nieuwenhuis, E.M. (author), Post, J.A.B. (author), Duinmeijer, S.P.A. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
The accumulation of FOG (Fat, Oil and Grease) deposits in sewer pumping stations results in an increase in maintenance costs, malfunctioning of pumps and, a potential increase of wastewater spills in receiving open water bodies. It is thought that a variety of parameters (e.g. geometry of the pump sump, pump operation, socioeconomic...
journal article 2018
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Meijer, D.H. (author), van Bijnen, J.A.C. (author), Langeveld, J.G. (author), Korving, J.L. (author), Post, J.A.B. (author), Clemens, F.H.L.R. (author)
Underground water infrastructure is essential for life in cities. The aging of these infrastructures requires maintenance strategies to maintain a minimum service level. Not all elements are equally important for the functioning of the infrastructure as a whole. Identifying the most critical elements in a network is crucial for formulating...
journal article 2018
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Langeveld, J.G. (author), van Daal-Rombouts, P.M.M. (author), Schilperoort, Remy (author), Nopens, Ingmar (author), Flameling, Tony (author), Weijers, Stefan (author)
Wastewater treatment plants (WWTP) typically have a service life of several decades. During this service life, external factors, such as changes in the effluent standards or the loading of the WWTP may change, requiring WWTP performance to be optimized. WWTP modelling is widely accepted as a means to assess and optimize WWTP performance. One of...
journal article 2017
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Panasiuk, Oleksandr (author), Hedström, Annelie (author), Langeveld, J.G. (author), de Haan, Cornelis (author), Liefting, Erik (author), Schilperoort, Remy (author), Viklander, Maria (author)
Infiltration and inflow (I/I) into sewers cause negative effects on the sewer system, wastewater treatment plant and environment. Identifying the causes and locating the inflows is necessary in order to address the I/I problem. This paper focuses on using distributed temperature sensing (DTS) for identifying, locating and characterising I/I...
journal article 2019
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