Searched for: +
(1 - 20 of 25)

Pages

document
Pronk, Tessa E. (author), Fischer, A. (author), van den Berg, Annemijne E.T. (author), Hofman, Roberta C.H.M. (author)
A main focus of water managers with regard to micropollutants is the protection of aquatic ecology. However, micropollutants also have the potential to affect the production of clean drinking water. In this paper, we propose to consider the removal effort when assessing micro-pollutants with an ‘Effort Index’ (EI). Assessments using the EI...
journal article 2023
document
Masese, Frank O. (author), Wanderi, Elizabeth W. (author), Nyakeya, Kobingi (author), Achieng, Alfred O. (author), Fouchy, Kelly (author), McClain, M.E. (author)
Many streams and rivers outside conservation areas across the Afrotropics face multiple stressors from land use change, urbanization, and excessive water withdrawals. Thus, there is a need to develop cost-effective tools for assessing and monitoring ecological changes to inform management decisions. Studies utilizing macroinvertebrate...
journal article 2023
document
Pramana, K.E.R. (author), Ertsen, M.W. (author)
In the first decade of the 21st century, a water harvesting approach based on contour trenches—ditches to catch runoff—from Kenya was proposed as groundwater recharge technology in a semi-arid area in Ninh Phuoc district, Vietnam. In order to modify this solutions to tackle water scarcity, hydrological conditions at the site needed to be known....
journal article 2022
document
Eisfeld, R.C.M. (author), Schijven, Jack F. (author), van der Wolf, Jan M. (author), Medema, G.J. (author), Kruisdijk, E. (author), van Breukelen, B.M. (author)
Irrigation with surface water carrying plant pathogens poses a risk for agriculture. Managed aquifer recharge enhances fresh water availability while simultaneously it may reduce the risk of plant diseases by removal of pathogens during aquifer passage. We compared the transport of three plant pathogenic bacteria with Escherichia coli WR1 as...
journal article 2022
document
Kloosterman, Ritsche Anne (author), Herder, P.M. (author), van der Hoek, J.P. (author)
Long term uncertainties in combination with long lifetime of assets of drinking water infrastructures (DWIs) and changing expectations of stakeholders make strategic decisions in drinking water infrastructures (DWIs) complex. A framework with building blocks and design spaces was developed to support these decisions. Building blocks, divided in...
journal article 2022
document
Ji, Yiran (author), Zheng, Feifei (author), Du, Jiawen (author), Huang, Yuan (author), Bi, Weiwei (author), Duan, Huan Feng (author), Savic, Dragan (author), Kapelan, Z. (author)
Most of the contamination source localization methods for water distribution systems (WDSs) assume the availability of accurate water quality models and multi-parameter online sensors, which are often out of reach of many water utilities. To address this, a novel manual grab-sampling method (MGSM) is developed to effectively and efficiently...
journal article 2022
document
Pinel, I.S.M. (author), Kim, Lan Hee (author), Proença Borges, Vitor R. (author), Farhat, Nadia M. (author), Witkamp, Geert Jan (author), van Loosdrecht, Mark C.M. (author), Vrouwenvelder, J.S. (author)
Phosphate limitation has been suggested as a preventive method against biofilms. P-limited feed water was studied as a preventive strategy against biofouling in cooling towers (CTs). Three pilot-scale open recirculating CTs were operated in parallel for five weeks. RO permeate was fed to the CTs (1) without supplementation (reference), (2)...
journal article 2020
document
Wijdeveld, A.J. (author)
The management of sediment, soil and water in the Netherlands dates back to the first settlements in the lower Northern and Western parts of the Netherlands. Around 500 B.C. farmers constructed ‘terps’ (artificial dwelling mounds) to protect against floodwater. The Romans (50 B.C. – 250 A.C.) reshaped natural waterways, to improve transport by...
doctoral thesis 2019
document
Winter, Casper de (author), Palleti, Venkata Reddy (author), Worm, Daniel (author), Kooij, Robert (author)
Water distribution networks (WDNs) are critical to provide safe, clean drinking water around the globe. However, they are susceptible to accidental or deliberate contamination, potentially resulting in poisoned water, many fatalities and large economic consequences. In order to protect against such intrusions, an efficient sensor network...
journal article 2019
document
Zlatanovic, L. (author), Knezev, A (author), van der Hoek, J.P. (author), Vreeburg, Jan (author)
Drinking water and fire safety are strongly bonded to each other. Actual drinking water demand and fire flows are both delivered through the same network, and are both devoted to public health and safety. In The Netherlands, the discussion about fire flows supplied by the drinking water networks has drawn fire fighters and drinking water...
journal article 2018
document
El Chakhtoura, J. (author), Saikaly, Pascal E. (author), van Loosdrecht, Mark C.M. (author), Vrouwenvelder, J.S. (author)
We sampled the tap water of seven unique, full-scale drinking water distribution systems at different locations as well as the corresponding treatment plant effluents to evaluate the impact of distribution and the potential presence of a core drinking water microbiome. The water was also sampled during network flushing to examine its effect on...
journal article 2018
document
Prest, E.I.E.D. (author), Weissbrodt, D.G. (author), Hammes, F (author), van Loosdrecht, Mark C.M. (author), Vrouwenvelder, J.S. (author)
Large seasonal variations in microbial drinking water quality can occur in distribution networks, but are often not taken into account when evaluating results from short-term water sampling campaigns. Temporal dynamics in bacterial community characteristics were investigated during a two-year drinking water monitoring campaign in a full-scale...
journal article 2016
document
Moreno Rodenas, A. (author), Cecinati, F. (author), ten Veldhuis, Marie-claire (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
This study addresses the effect of spatial and temporal resolution of rainfall fields on the performance of a simplified integrated catchment model for predicting dissolved oxygen concentrations in a river. For that purpose we propose a procedure to generate rainfall products with increasing spatial information at different time step...
conference paper 2016
document
Vermeulen, L.C. (author), Kraker, J. (author), Hofstra, N. (author), Kroeze, C. (author), Medema, G. (author)
Cryptosporidium is a protozoan parasite that can cause diarrhoea. Human faeces are an important source of Cryptosporidium in surface waters. We present a model to study the impact of sanitation, urbanization and population growth on human emissions of Cryptosporidium to surface waters. We build on a global model by Hofstra et al (2013 Sci. Total...
journal article 2015
document
Poças, A. (author)
The main objective of the thesis is to contribute to a better understanding of the possible origins and development processes underlying tap water discolouration. With that purpose, qualitative and practical approaches were used for collecting loose deposits samples from distribution networks, i.e., methodologies that may be used together with...
doctoral thesis 2014
document
Donchyts, G. (author), Baart, F. (author), Van Dam, A. (author), De Goede, E. (author), Icke, J. (author), Putten, H. (author)
An overview paper, describes motivation and main deliverables of the Next Generation Hydro Software (NGHS) project. Important technological innovations include development of the new computational core Delft3D Flexible Mesh, as well as the open modelling environment Delta Shell.
conference paper 2014
document
Hut, R. (author), Van de Giesen, N. (author), Houtman, C.J. (author)
The relation between pharmaceutical residues along the river Rhine and the demographic characteristics of the upstream population was studied. A sampling campaign was performed in which water samples from the Rhine were taken at 42 locations. Measurements were compared to a two parameter model with regional demographic data as main input. For 12...
journal article 2013
document
Xu, M. (author)
Fresh water supply and flood protection are two central issues in water management. Society needs more and more fresh water and a safe water system to guarantee a better life. A more severe climate will result in more droughts and extreme storms. As a consequence, salt water intrusion will increase. Therefore, clean and fresh water is becoming...
doctoral thesis 2013
document
Mostert, E. (author)
Lecture notes in DUTCH for course CIE5500, providing a detailed overview of Dutch and European water law concerning surface and groundwater, the North Sea and the Wadden Sea, water services, flood protection, spatial planning, nature protection, water management organizations (e.g. the water boards), financing and legal protection....
journal article 2012
document
Bakker, M. (author), Verberk, J.Q.J.C. (author), Palmen, L.J. (author), Sperber, V. (author), Bakker, G. (author)
Half of all water supply systems in the Netherlands are controlled by model predictive flow control; the other half are controlled by conventional level based control. The differences between conventional level based control and model predictive control were investigated in experiments at five full scale water supply systems in the first half of...
conference paper 2011
Searched for: +
(1 - 20 of 25)

Pages