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Gu, Chunping (author), Ji, Yongjie (author), Yang, Yang (author), Liu, Jintao (author), Ni, Tongyuan (author)Sewage sludge ash (SSA) is the combustion residue of the sewage sludge obtained from wastewater treatment plants. In China, SSA normally contains high content of SO3, which may cause detrimental effect on the volume stability of cement-based materials. This study investigated the effect of sulfate-rich SSA (SR-SSA) on the volume deformation and...conference paper 2021
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Avadhani, M. (author), van Rooyen, Roland (author), Infante Ferreira, C.A. (author)Buildings consume 40% of the total global energy and contribute to over 30% of all CO2 emissions. Space heating forms a significant part of energy consumption in buildings. A possible solution is to recover waste heat from sewage and to upgrade its exergy using a heat pump. Polymers reduce cost and energy required for manufacturing the heat...conference paper 2021
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Lotti, T. (author)Conventional wastewater treatment plants (WWTPs), like activated sludge systems, are energy demanding requiring a large electrical energy supply (e.g. 25 kWh PE-1 year-1) which, especially during peak-load periods, may account for an important quote of the grid installed power of the surrounding area. Only across the EU, there are 16000 WWTPs...doctoral thesis 2016
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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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Wilfert, P.K. (author)The scope of this thesis was to lay the basis for a phosphate recovery technology that can be applied on sewage sludge containing iron phosphate. Such a technology should come with minimal changes to the existing sludge treatment configuration while keeping the use of chemicals or energy as small as possible. The research focused on...doctoral thesis 2018
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Zwart, S.D. (author), Van de Poel, I. (author), Van Mil, H. (author), Brumsen, M. (author)In this paper we report on our experiences with using network analysis to discern and analyse ethical issues in research into, and the development of, a new wastewater treatment technology. Using network analysis, we preliminarily interpreted some of our observations in a Group Decision Room (GDR) session where we invited important stakeholders...journal article 2006
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Chaudhari, Bhavesh (author), Panda, Biranchi (author), Šavija, B. (author), Chandra Paul, Suvash (author)Microbiologically induced concrete corrosion (in wastewater pipes) occurs mainly because of the diffusion of aggressive solutions and in situ production of sulfuric acid by microorganisms. The prevention of concrete biocorrosion usually requires modification of the mix design or the application of corrosion-resistant coatings, which requires a...journal article 2022
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Calderon Franco, D. (author), Orschler, Laura (author), Lackner, Susanne (author), Agrawal, Shelesh (author), Weissbrodt, D.G. (author)The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemia has been one of the most difficult challenges humankind has recently faced. Wastewater-based epidemiology has emerged as a tool for surveillance and mitigation of potential viral outbreaks, circumventing biases introduced by clinical patient testing. Due to the situation...journal article 2022
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Calderon Franco, D. (author), Apoorva, Seeram (author), Medema, G.J. (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author)Wastewater treatment is challenged by the continuous emergence of chemical and biological contaminants. Disinfection, advanced oxidation, and activated carbon technologies are accessible in high-income countries to suppress them. Low-cost, easily implementable, and scalable solutions are needed for sanitation across regions. We studied the...journal article 2021
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van Loosdrecht, Mark C.M. (author), Hao, Xiaodi (author), Wu, Yuanyuan (author)摘要： 好氧颗粒污泥技术具有占地面积小、能耗低、剩余污泥量少、抗冲击性强等优点，是<br/>一种可持续的污水处理技术。以北京某污水处理厂实际生活污水作为基质，在中试规模（有效容积<br/>为2.5 m3）反应器中进行好氧颗粒污泥培养，研究了颗粒污泥在低温条件下的稳定性。中试自夏季<br/>开始运行到次年春季结束，共计运行260 d。结果表明，采用我国实际低碳源市政污水可以培养出好<br/>氧颗粒污泥，污泥颗粒化程度可达94%，SVI5/SVI30为1.1 ~ 1.3。冬季低温会造成颗粒污泥的枝状结<br/>构增多、丝状菌生长，进而引起颗粒化比例略有下降，为80%~91%，污泥平均粒径降低，SVI5/SVI30升<br/>高至1.5 ~ 1.8。在冬季低温条件下，通过优化调控进水流量...journal article 2022
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Mulder, K.F. (author)The metabolic flows of cities have to be reduced. Thus far, efforts have been mainly directed to providing the city with renewable resources, diminish resource consumption, and/or reuse the wastes and emissions. The dense fabric of urban infrastructures does not only provide a high level of services. By the proximity of infrastructures symbiosis...journal article 2016
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Wilfert, P.K. (author), Mandalidis, A. (author), Dugulan, A.I. (author), Goubitz, K. (author), Korving, L. (author), Temmink, H. (author), Witkamp, G.J. (author), van Loosdrecht, Mark C.M. (author)Iron is an important element for modern sewage treatment, inter alia to remove phosphorus from sewage. However, phosphorus recovery from iron phosphorus containing sewage sludge, without incineration, is not yet economical. We believe, increasing the knowledge about iron-phosphorus speciation in sewage sludge can help to identify new routes...journal article 2016
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Kouba, V. (author), D, Vejmelkova (author), E, Zwolsman (author), K, Hurkova (author), K, Navratilova (author), M, Laureni (author), Pabst, Martin (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author)Anammox bacteria enable efficient removal of nitrogen from sewage in processes involving partial nitritation and anammox (PN/A) or nitrification, partial denitrification, and anammox (N-PdN/A). In mild climates, anammox bacteria must be adapted to ≤15 °C, typically by gradual temperature decrease; however, this takes months or years. To...journal article 2022
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Wei, P. (author), Uijttewaal, W.S.J. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Accurate rheological characterisation of sewage waste activated sludge (WAS) is of high importance for downstream processing related to optimised sludge pumping and mixing, assessment of energy demands and overall process design. However, to elaborate rheological behaviour is often challenging under dynamic operational conditions in practice....journal article 2021
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Pryce, David (author), Memon, Fayyaz Ali (author), Kapelan, Z. (author)With the aim of reducing the environmental burden of decentralized wastewater treatment plants in India, this project investigated five primary materials (stainless steel (SS), mild steel (MS), glass fibre reinforced polymer (GFRP), high density polyethylene (HDPE), and reinforced concrete cement (RCC)) in terms of the relative environmental...journal article 2021
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Illathukandy, Biju (author), Saadabadi, S.A. (author), Kuo, P.C. (author), Wasajja, H. (author), Lindeboom, R.E.F. (author), Vijay, V. (author), Aravind, P.V. (author)This study is particularly aimed at investigating the influence of hydrogen chloride traces in biogas on direct internal reforming in solid oxide fuel cells (SOFCs). The experiments are performed with simulated biogas containing methane to carbon dioxide ratio of 3:2, the usual average proportion in biogas. To the best of our knowledge, there...journal article 2022
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Langeveld, J.G. (author), Schilperoort, Remy (author), Heijnen, Leo (author), Elsinga, Goffe (author), Schapendonk, Claudia E.M. (author), Fanoy, Ewout (author), de Schepper, Evelien I.T. (author), Koopmans, Marion P.G. (author), de Graaf, Miranda (author), Medema, G.J. (author)Over the course of the Corona Virus Disease-19 (COVID-19) pandemic in 2020–2022, monitoring of the severe acute respiratory syndrome coronavirus 2 ribonucleic acid (SARS-CoV-2 RNA) in wastewater has rapidly evolved into a supplementary surveillance instrument for public health. Short term trends (2 weeks) are used as a basis for policy and...journal article 2023
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de Graaf, Miranda (author), Langeveld, J.G. (author), Post, Johan (author), Carrizosa, Christian (author), Franz, Eelco (author), Izquierdo-Lara, Ray W. (author), Elsinga, Goffe (author), Heijnen, Leo (author), Medema, G.J. (author)Despite high vaccination rates in the Netherlands, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to circulate. Longitudinal sewage surveillance was implemented along with the notification of cases as two parts of the surveillance pyramid to validate the use of sewage for surveillance, as an early warning tool, and to...journal article 2023
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Gonzales, A. (author), Hendriks, A.T.W.M. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Pre-treatments for waste activated sludge (WAS) are, in most cases, an attempt to increase the biodegradation and/or improve hydrolysis rate of WAS after anaerobic digestion. This review presents an extensive analysis of WAS pre-treatments effectiveness focusing on increasing the biodegradability. In the first part of the review, WAS is...journal article 2018
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Vernay, A.L. (author), Mulder, K.F. (author)Urban symbiosis is a strategy to create a more efficient metabolism of cities. However, urban symbiosis requires the integration of different systems, which is hard to achieve. Actors involved in existing systems can hardly develop ‘the bridges’ that are required to connect the thus far unrelated worlds of pre-existing systems. This paper...journal article 2016
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