Searched for: contributor%3A%22Van+Dijk%2C+J.C.+%28mentor%29%22
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Haidari, A.H. (author)
Scaling is a major barrier in increasing recovery of RO installations. One of the major unresolved scaling problems in RO is silica scaling. Depending on pH and temperature, the safe operation practice to prevent silica scaling is to keep silica concentration below 150 [mg/l] in the concentrate. In this study, it was investigated whether it is...
master thesis 2011
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Derks, J.G. (author)
Drinking water company Dunea Duin en Water produces drinking water from the Meuse River, which contains a variety of organic micropollutants (OMPs) from upstream activity. OMPs found in Dunea’s source are plant protection products, pharmaceuticals, hormones and endocrine disruptors and X-ray contrast media. Continues development of measuring...
master thesis 2011
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Gude, J.C.J. (author)
Worldwide limestone (CaCO3) filtration is used in many treatment plants for the conditioning and (re)mineralization of drinking water. The goals are to increase the concentrations of Ca2+ and HCO3-, the pH and the Saturation Index (SI), thereby improving the quality of the water regarding corrosion control, buffering and taste. Typical...
master thesis 2010
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Bertelkamp, C. (author)
Dunea Duin en Water provides drinking water for 1.2 million people in de western part of the province Zuid-Holland. As a source, for their drinking water production, surface water from the river Meuse is used. Organic micro pollutants (OMPs), although in extremely low concentrations, have occasionally been detected in the river Meuse. Obviously,...
master thesis 2010
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Vidalis, I. (author)
Trimethylene glycol dimethyl ether (triglyme), a Polyethylene glycol (PEG)-like hydrophilic polymer, was deposited by plasma polymerization to reduce RO membrane’s organic fouling tendency. This method has the great advantage of achieving modification in one single step. A series of plasma deposition experiments were undertaken. The successful...
master thesis 2010
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Ibbotson, B. (author)
Directly coupling renewable energy to reverse osmosis may be the most cost effective solution to supply potable water to remote and isolated areas that lack infrastructure and safe drinking water. These systems do not use batteries but rather operate only when sufficient energy is available and store any excess energy as water. Since reverse...
master thesis 2010
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Yuan, X. (author)
Stimela is an environment for standardized mathematical models of drinking water treatment processes. It can be used to predict the future water treatment situation which may happen or change. In water treatment plant Wim Mensink, the Stimela model train was set up to compare with other alternative water control strategies. Before starting the...
master thesis 2009
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Van der Laan, H. (author)
High concentrations of arsenic in drinking water form a major threat for public health in more than 70 countries worldwide. The situation is Bangladesh is seen as the worst incidence of arsenic poisoning: it is believed that 30 million people in Bangladesh are exposed to an arsenic concentration exceeding 50 ?g/L. Recently subsurface treatment...
master thesis 2009
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Mikkers, Y. (author)
Research performed of the last decades in the waste water treatment field has shown the ability of zeolites to adsorb ammonium via ion-exchange. Recent research has proven that zeolites might also be capable to remove the lower concentrations of ammonium present in groundwater to the for drinking water required standards. This makes it a...
master thesis 2009
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Van Overveld, P.J.M. (author)
master thesis 2008
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Van Overveld, P. (author)
Organic micropollutants, like pesticides and pharmaceuticals, are frequently detected in surface water as a result of emissions from sources like agriculture, industry and households. Surface water is an important drinking water source. Due to their specific physical and chemical properties, micropollutants cannot be completely removed in...
master thesis 2008
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Gao, L. (author)
Desalinated water produced by reverse osmosis can generally be characterized as aggressive and corrosive water due to its low pH, low bicarbonate concentration and low hardness. Post treatment is required to remineralize desalinated water to comply with the Drinking Water Guidelines. Softening pellets, a “waste” product from the pellet softening...
master thesis 2008
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Guo, H. (author)
The topic of this thesis is a concept of zero liquid discharge for nanofiltration technology in drinking water treatment. Nanofiltration, defined as a process between Ultrafiltration (UF) and Reverse Osmosis (RO), is a rapidly emerging technology. The origin of NF membranes can be traced back to the late 1950s when it was developed to treat sea...
master thesis 2008
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Salmin, A. (author)
In Suriname groundwater is mostly used for drinking water production. Depending on the ground layers from which groundwater is extracted, groundwater is characterized as aggressive water. The disadvantage of aggressive water is its ability to cause corrosion of metal pipelines and cement bound materials. In drinking water practice this water...
master thesis 2008
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Kaeocha, A. (author)
Ion exchange resins have found an increasing application in the drinking water treatment sector over the last few decades. The ion exchange resins have a positive ability to remove the charged natural organic matter (NOM). To apply this process in full-scale treatment, the most suitable resin has to be selected and the hydraulic behaviour of the...
master thesis 2008
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Shao, L. (author)
Advanced Oxidation Processes (AOPs) are innovative, cost-effective, catalyzed chemical oxidation processes for treating pollutants in low or high concentration from contaminated soil, sludge and water. The common used AOPs in drinking water treatment include UV/H2O2 process, UV/Ozone Process, UV/Titanium Dioxide and Fenton’s Reagent. AOPs are...
master thesis 2007
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Teunissen, K. (author)
Iron is the primary source for discolouration problems in the drinking water distribution system. The removal of iron from groundwater is a common treatment step in the production of drinking water. Even when clear water meets the drinking water standards, the water quality in the distribution system can deteriorate due to settling of iron ...
master thesis 2007
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Van Halem, D. (author)
master thesis 2006
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Ross, P. (author)
master thesis 2006
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Ross, P. (author)
In 1987 Amsterdam Water Supply, Waternet, discovered the presence of pesticides in the drinking water. Because of this the production process at Weesperkarspel has changed in 1992. The coagulation and rapid sand filtration are replaced by activated carbon filtration. At Weesperkarspel the activated carbon filters are pre-oxidised by the use of...
master thesis 2006
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