Searched for: author:"Langeveld, J.G."
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Meijer, D.H. (author), Post, Johan (author), van der Hoek, J.P. (author), Korving, Hans (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Drinking water distribution networks (WDNs) are a crucial infrastructure for life in cities. Deterioration of this ageing, and partly hidden from view, infrastructure can result in losses due to leakage and an increased contamination risk. To counteract this, maintenance strategies are required to maintain the service level. Information on...
journal article 2020
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Rietveld, M.W.J. (author), Clemens, F.H.L.R. (author), Langeveld, J.G. (author)
Gully pots are utilized for conveying runoff to drainage systems, as well as for reducing the system’s solids loading by retaining suspended solids. However, the accumulation of solids in gully pots reduces their removal efficiency, leading to an increase in solids transport towards the drainage system. This article aims to identify the main...
journal article 2020
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Tscheikner-Gratl, F. (author), Bellos, Vasilis (author), Schellart, Alma (author), Moreno Rodenas, A. (author), Muthusamy, Manoranjan (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author), Shucksmith, James (author), Heuvelink, Gerard B.M. (author)
This paper aims to stimulate discussion based on the experiences derived from the QUICS project (Quantifying Uncertainty in Integrated Catchment Studies). First it briefly discusses the current state of knowledge on uncertainties in sub-models of integrated catchment models and the existing frameworks for analysing uncertainty. Furthermore, it...
review 2019
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Rietveld, M.W.J. (author), Clemens, F.H.L.R. (author), Langeveld, J.G. (author)
Sewer and urban drainage systems deal with the runoff of areas that lack infiltration capacity. During wet weather, solids that are present on the street are (re)mobilised and transported to the drainage system by the runoff. These solids and their associated pollutants can have detrimental effects on receiving water quality. This paper presents...
conference paper 2019
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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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Tscheikner-Gratl, Franz (author), Caradot, Nicolas (author), Cherqui, Frederic (author), Leitão, Joao P. (author), Langeveld, J.G. (author), Scholten, L. (author), Lepot, M.J. (author), Stegeman, B. (author), Clemens, F.H.L.R. (author)
Sewer asset management gained momentum and importance in recent years due to economic considerations, since infrastructure maintenance and rehabilitation directly represent major investments. Because physical urban water infrastructure has life expectancies of up to 100 years or more, contemporary urban drainage systems are strongly influenced...
journal article 2019
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Moreno Rodenas, A. (author), Tscheikner-Gratl, F. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Receiving water quality simulation in highly urbanised areas requires the integration of several processes occurring at different space-time scales. These integrated catchment models deliver results with a significant uncertainty level associated. Still, uncertainty analysis is seldom applied in practice and the relative contribution of the...
journal article 2019
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Moreno Rodenas, A. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Water quality environmental assessment often requires the joint simulation of several subsystems (e.g. wastewater treatment processes, urban drainage and receiving water bodies). The complexity of these integrated catchment models grows fast, leading to potentially over-parameterised and computationally expensive models. The receiving water body...
journal article 2019
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Makris, K. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Polyvinyl chloride (PVC) has become one of the dominant construction materials for sewer systems over the past decades, as a result of its reputed merits. However, since PVC sewer pipes have operated for decades in a hostile environment, concern over their longevity has been lately raised by sewer managers in the Netherlands. Towards that...
journal article 2019
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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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Stegeman, B. (author), Langeveld, J.G. (author), Bogaard, T.A. (author), Clemens, F.H.L.R. (author)
Due to the ageing of our underground wastewater infrastructure, leakage of sewers and pressure mains and subsequent infiltration or exfiltration are becoming an increasingly important issue. Herein, we present a novel method to detect and potentially quantify exfiltration from sewer systems under variable flow conditions; the DEST method. The...
conference paper 2019
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Moreno Rodenas, A. (author), Bellos, V. (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
This work presents a method to emulate the flow dynamics of physically based hydrodynamic simulators under variations of time-dependent rainfall and parametric scenarios. Although surrogate modelling is often employed to deal with the computational burden of this type of simulators, common techniques used for model emulation as polynomial...
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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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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Cecinati, Francesca (author), Moreno Rodenas, A. (author), Rico-Ramirez, Miguel A. (author), ten Veldhuis, Marie-claire (author), Langeveld, J.G. (author)
In urban hydrological models, rainfall is the main input and one of the main sources of uncertainty. To reach sufficient spatial coverage and resolution, the integration of several rainfall data sources, including rain gauges and weather radars, is often necessary. The uncertainty associated with rain gauge measurements is dependent on...
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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Moreno Rodenas, A. (author), Cecinati, Francesca (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Integrated Catchment Modelling aims to simulate jointly urban drainage systems, wastewater treatment plant and rivers. The effect of rainfall input uncertainties in the modelling of individual urban drainage systems has been discussed in several studies already. However, this influence changes when simultaneously simulating several urban...
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 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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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
Searched for: author:"Langeveld, J.G."
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