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Hao, X. (author), Nieuwstad, T.J. (author)Airlift-loop reactors have become competitive in treating municipal wastewater. Many studies have verified that high COD conversion efficiencies can be reached. When simultaneous nitrification and denitrification could be realised to the same degree as is possible in low loaded conventional activated sludge processes, their application would be...report 1993
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Scenario Studies into Advanced Particle Removal in the Physical-Chemical Pre-treatment of WastewaterVan Nieuwenhuijzen, A.F. (author)The research dealt with in this dissertation had the objective identifying the specific roles of particulate matter in wastewater influent and its inherent characteristics. In addition, advanced particle removal techniques for the development of more sustainable treatment scenarios based on physical-chemical pre-treatment of wastewater were...doctoral thesis 2002
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Roorda, J.H. (author)With a growing need for water for many purposes on one side and an increasing degree of wastewater treatment producing water with an improved quality on the other side, the necessity of water reuse will grow, especially in highly industrialised countries with restricted natural water sources. Improvement of advanced treatment schemes for...doctoral thesis 2004
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Meijer, S.C.F. (author)This thesis describes the full-scale validation and calibration of a integrated metabolic activated sludge model for biological phosphorus removal. In chapters 1 and 2 the metabolic model is described, in chapters 3 to 6 the model is tested and in chapters 7 and 8 the model is put into practice. Chapter 1 is a general introduction to this...doctoral thesis 2004
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Evenblij, H. (author)Causes of and remedies for membrane fouling in Membrane Bioreactors for wastewater treatment are only poorly understood and described in scientific literature. A Filtration Characterisation Installation and a measurement protocol were developed with the aim of a) unequivocally determination and quantification of the filterability of an activated...doctoral thesis 2006
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De Kreuk, M.K. (author)Most conventional wastewater treatment plants need a large surface area for the treatment of their sewage. This is due to the open structure of the biomass used to convert the polluting components in wastewater. Because of the flocculated growth, sludge concentrations in reaction tanks are low and settling times need to be long in order to keep...doctoral thesis 2006
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Van der Star, W.R.L. (author)The anoxic ammonium oxidation (anammox) process is the conversion of nitrite and ammonium under anoxic conditions- to form dinitrogen gas. The process is performed by deep-branching Planctomycetes. The startup of the first full-scale anammox reactor in the world is described in Chapter 2. The described full scale reactor was a granular sludge...doctoral thesis 2008
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Kampschreur, M.J. (author)Nitric oxide (NO) and nitrous oxide (N2O) emissions can be a serious threat to the environment. Rising levels of N2O in the atmosphere contribute to global warming and destruction of the ozone layer. This thesis describes an investigation on the emission of NO and N2O during nitrogen conversion processes. Emissions were measured at wastewater...doctoral thesis 2010
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Schilperoort, R.P.S. (author)The wastewater system in the Netherlands comprises approximately 100,000 km of sewer pipes and more than 350 wastewater treatment plants (wwtp). The system collects and treats the majority of domestic and industrial wastewater. A small amount of untreated wastewater, however, is occasionally discharged to rivers and lakes, often resulting in a...doctoral thesis 2011
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Velez Quintero, C.A. (author)In this research a considerable amount of scientific evidence had been collected which leads to the conclusion that the urban wastewater components should be designed as one integrated system, if the protection of the receiving waters is to be achieved cost-effectively. Even more, there is a need to optimize the design and operation of the...doctoral thesis 2012
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Krzeminski, P. (author)Despite continuous developments in the field of MBR technology, membrane fouling together with the associated energy demand and related costs issues remain major challenges. The efficiency of the filtration process in an MBR is governed by the activated sludge filterability, which is still limitedly understood and is determined by the...doctoral thesis 2013
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- Yang, J. (author) doctoral thesis 2013
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Daelman, M.R.J. (author)Since 1750, the year that commonly marks the start of the Industrial Revolution, the atmospheric concentrations of carbon dioxide, methane and nitrous oxide have risen about 40 %, 150 % and 20 %, respectively, above the pre-industrial levels due to human activity (IPCC (2013) Climate Change 2013: The Physical Science Basis. Working Group I...doctoral thesis 2014
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Van den Brand, T.P.H. (author)The depletion of fresh water sources forces to design innovative integral solutions for the urban water cycle. Usual practice in most cities is to use drinking water to transport waste outside the city via sewer system. For toilet flushing the water quality is less important and seawater could be used as alternative to use of drinking water. Due...doctoral thesis 2014
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Lin, Y.M. (author), Nierop, K.G.J. (author), Girbal-Neuhauser, E. (author), Adriaanse, M. (author), Van Loosdrecht, M.C.M. (author)To evaluate the possibility of utilizing polysaccharide-based biomaterial recovered from aerobic granular sludge as a coating material, the morphology, molecular weight distribution and chemical composition of the recovered biomaterial were investigated by atomic force microscopy, size exclusion chromatography and pyrolysis–GC–MS to have a...journal article 2015
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Van Lier, J.B. (author), Van der Zee, F.P. (author), Frijters, C.T.M.J. (author), Ersahin, M.E. (author)In the last 40 years, anaerobic sludge bed reactor technology evolved from localized lab-scale trials to worldwide successful implementations at a variety of industries. High-rate sludge bed reactors are characterized by a very small foot print and high applicable volumetric loading rates. Best performances are obtained when the sludge bed...journal article 2015
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Erşahin, M.E. (author)Anaerobic membrane bioreactors (AnMBRs) physically ensure biomass retention by the application of a membrane filtration process. With growing application experiences from aerobic membrane bioreactors (MBRs), the combination of membrane and anaerobic processes has received much attention and become more attractive and feasible, due to advantages...doctoral thesis 2015
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Hu, J. (author)In the recent years, the removal of micro-pollutants from treated wastewater has been highly advocated throughout Europe and the rest of the world. The relevant regulations and the suitable techniques have been proposed accordingly, which promoted the innovation of the conventional wastewater treatment plants (WWTPs). Activated carbon adsorption...doctoral thesis 2016
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Fischer, A. (author), ter Laak, T (author), Bronders, J. (author), Desmet, N. (author), Christoffels, E. (author), van Wezel, A (author), van der Hoek, J.P. (author)Water authorities and drinking water companies are challenged with the question if, where and how to abate contaminants of emerging concern in the urban water cycle. The most effective strategy under given conditions is often unclear to these stakeholders as it requires insight into several aspects of the contaminants such as sources, properties...journal article 2017
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Taghipour, Nader (author), Mosaferi, Mohammad (author), Shakerkhatibi, Mohammad (author), Jaafarzadeh, Neemat (author), Dehghanzadeh, Reza (author), Hassan HosseinNia, S. (author)In this paper, the performance of a submerged membrane electro-bioreactor with pre-anaerobic reactors containing anode electrodes (SMEBR<sup>þ</sup>) was compared with that of a membrane bioreactor (MBR) in municipal wastewater treatment. The new design idea of the SMEBR<sup>þ</sup> was based on applications of direct current (DC) on the...journal article 2017