Searched for:
(1 - 16 of 16)
document
Heijman, S.G.J. (author)
report 2007
document
Heijman, S.G.J. (author)
patent 2009
document
Li, S. (author), Heijman, S.G.J. (author), Verberk, J.Q.J.C. (author), Van Dijk, J.C. (author)
A new treatment concept for drinking water production from surface water has been investigated on a pilot scale. The treatment concept consists of fluidized ion exchange (FIEX), ultrafiltration (UF), nanofiltration (NF), and granular activated carbon filtration (GAC). The FIEX process removed calcium and other divalent cations; the UF membrane...
journal article 2009
document
De Ridder, D.J. (author), McConville, M. (author), Verliefde, A.R.D. (author), Van der Aa, L.T.J. (author), Heijman, S.G.J. (author), Verberk, J.Q.J.C. (author), Rietveld, L.C. (author)
The occurrence of organic micropollutants in drinking water and its sources has opened up a field of study related to monitoring concentration levels in water sources, evaluating their toxicity and estimating their removal in drinking water treatment processes. Because a large number of organic micropollutants is currently present (although in...
journal article 2009
document
Lu, J. (author), Wen, H.Q. (author), Heijman, S.G.J. (author), Rietveld, L.C. (author)
journal article 2012
document
Van Lier, J.B. (author), Heijman, S.G.J. (author)
Congresbundel ‘De Watercyclus; daar zit wat in!’ van de 65ste Vakantiecursus Drinkwater en Afvalwater (VC2013), gehouden op 11 januari 2013 te Delft. Uitgave van de Sectie Sanitary Engineering van de Faculteit Civiele Techniek en Geowetenschappen van de TU Delft.
book 2013
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Hu, J. (author), Martin, A. (author), Siegers, W. (author), Cornellissen, E. (author), Heijman, S.G.J. (author), Rietveld, L.C. (author)
lecture notes 2013
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Mohd Amin, M.F. (author), Heijman, S.G.J. (author), Lopes, S.I.C. (author), Rietveld, L.C. (author)
This paper reports on the direct ability of two positively charged organic polyelectrolytes (natural-based and synthetic) to reduce the atrazine concentration in water. The adsorption study was set up using multiple glass vessels with different polymer dosing levels followed by ultrafiltration with a 1?kDa membrane. The addition of polymers...
journal article 2014
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Hu, J. (author), Aarts, A.L.F. (author), Shang, R. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)
Integrating powdered activated carbon (PAC) into wastewater tertiary treatment is a promising technology to reduce organic micro-pollutant (OMP) discharge into the receiving waters. To take advantage of the existing tertiary filter, PAC was pre-embedded inside the filter bed acting as a fixed-bed adsorber. The pre-embedding (i.e. immobilization)...
journal article 2016
document
Haidari, A.H. (author), Heijman, Sebastiaan (author), van der Meer, W.G.J. (author)
journal article 2016
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van Halem, D. (author), van der Laan, H. (author), Soppe, A. I.A. (author), Heijman, Sebastiaan (author)
Ceramic pot filters are considered safe, robust and appropriate technologies, but there is a general consensus that water revenues are limited due to clogging of the ceramic element. The objective of this study was to investigate the potential of high flow ceramic pot filters to produce more water without sacrificing their microbial removal...
journal article 2017
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Shang, R. (author), Goulas, A (author), Tang, CY (author), De Frias Serra, X. (author), Rietveld, L.C. (author), Heijman, Sebastiaan (author)
Tight ceramic nanofiltration (NF) membranes allow efficient separation of organic matter and ions for advanced water treatment. These membranes are typically produced by the sol-gel method. Recently, atomic layer deposition (ALD), a self-limiting gas phase coating technique, has been explored for membrane fabrication and modification. In this...
journal article 2017
document
Haidari, A.H. (author), Blankert, Bastiaan (author), Timmer, H. (author), Heijman, Sebastiaan (author), van der Meer, W.G.J. (author)
Depletion of fresh groundwater sources as the result of overdraft, salinization and pollution becomes a major problem in parts of the world. Desalination of brackish groundwater by membrane technology, e.g. reverse osmosis (RO), seems to be a promising solution to water scarcity problems. However, energy consumption and concentrate disposal...
journal article 2017
document
Haidari, A.H. (author), Heijman, Sebastiaan (author), van der Meer, W.G.J. (author)
Spiral-wound membrane (SWM) modules are the most common membrane configuration utilized in reverse osmosis (RO) and nanofiltration. The enhancement of SWM module design, particularly in the geometric design of the feed spacer, can play a crucial role in the cost and the potential for wider application of these modules. The feed spacer...
review 2018
document
Haidari, A.H. (author), Heijman, Sebastiaan (author), van der Meer, W.G.J. (author)
Making improvements to feed spacers of spiral-wound membrane (SWM) modules of reverse osmosis (RO) is a necessary step towards a wider application of these modules. This study sets out to evaluate the performance of six commercial feed spacers by comparing their actual velocity profiles and their pressure drop. Velocity profiles are obtained...
journal article 2018
document
Jiang, N. (author), Shang, R. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)
High-silica zeolites have been found to be effective adsorbents for the removal of organic micro-pollutants (OMPs) from impaired water, including various pharmaceuticals, personal care products, industrial chemicals, etc. In this review, the properties and fundamentals of high-silica zeolites are summarised. Recent research on mechanisms and...
review 2018
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