Searched for: subject%3A%22Disinfection%22
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Tan, C. (author)
Historically, viruses have always been the causative agent of most human diseases. As one of the most devastating pandemics in human history, the COVID-19 pandemic, associated with SARS-CoV-2, is responsible for tens of millions of casualties in the world since the end of 2019. Meanwhile, it also has destabilized global economics. Therefore, in...
doctoral thesis 2023
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Wang, Feifei (author), Hua, Yulin (author), Pan, Jiazheng (author), Zhou, Jie (author), Hea, Chiquan (author), Hofman, J.A.M.H. (author), Chu, Wenhai (author), van der Hoek, J.P. (author)
In drinking water treatment plants (DWTPs), the widely used biological activated carbon filters (BACFs), as the last barrier before disinfection, can remove dissolved organic matter (DOM) known as precursors of disinfection by-products (DBPs). Whether phosphate addition can improve water purification and DBP control of BACFs is still...
journal article 2023
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Zhang, Ruihua (author), Xiao, Rong (author), Wang, Feifei (author), Chu, Wenhai (author), Hu, Jinglong (author), Zhang, Yu (author), Jin, Wei (author), van der Hoek, J.P. (author), Xu, Zuxin (author)
The illicit connection of sewage pipes to stormwater pipes commonly occurs in urban stormwater systems. This brings problems that sewage might be directly discharges into natural water and even drinking water sources without treatment, posing risks to ecological safety. Sewage contains various unknown dissolved organic matter (DOM), which could...
journal article 2023
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Deng, Tianyi (author)
Bromate is a possible human carcinogen that does not naturally exist in surface or groundwater bodies. Its formation mostly results from ozonating bromide-containing water during wastewater treatment or drinking water production. Bromate is difficult to remove from water due to its high solubility and low reactivity in the aqueous environment;...
master thesis 2022
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Wang, Feifei (author), Pan, Jiazheng (author), Hu, Yulin (author), Zhou, Jie (author), Wang, Haoqian (author), Huang, Xin (author), Chu, Wenhai (author), van der Hoek, J.P. (author)
Biological activated carbon (BAC) filtration is usually considered to be able to decrease formation potentials (FPs) of disinfection by-products (DBPs) in drinking water treatment plant (DWTP). However, BAC filters with long running time may release microbial metabolites to effluents and therefore increase FPs of nitrogenous DBPs with high...
journal article 2022
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Bicudo, Bruno (author), Medema, G.J. (author), van Halem, D. (author)
Electrochemical ferrous iron (Fe<sup>2+</sup>) wastewater treatment is gaining momentum for treating municipal wastewater due to its decreasing costs, environmental friendliness and capacity for removal of a wide range of contaminants. Disinfection by iron electrocoagulation (Fe-EC) has been occasionally reported in full scale industrial...
journal article 2022
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Lu, Zhiwei (author), Li, Xiaoling (author), Wei, Jinxiu (author), Cai, Miao (author), Yang, Daoguo (author), Zhang, Kouchi (author)
UVC-LED is known as a deep ultraviolet LED. The application development and disinfection efficiency of UVC-LED modules are important problems encountered when UVC-LED products are rushed into commercialization. In this article, a specific disinfection experiment with a UVC-LED module was combined to analyze the disinfection efficiency. UVC-LEDs...
conference paper 2022
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Farhat, Nadia (author), Kim, Lanhee (author), Mineta, Katsuhiko (author), Alarawi, Mohammed (author), Gojobori, Takashi (author), Saikaly, Pascal (author), Vrouwenvelder, J.S. (author)
Monitoring the changes that occur to water during distribution is vital to ensure water safety. In this study, the biological stability of reverse osmosis (RO) produced drinking water, characterized by low cell concentration and low assimilable organic carbon, in combination with chlorine disinfection was investigated. Water quality at...
journal article 2022
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Poudel, Prakash (author), Sharma, S. (author), Ansari, Mohamed Nainar Mohamed (author), Kumar, Pushpendra (author), Ibrahim, Sobhy M. (author), Vaish, Rahul (author), Kumar, Rajeev (author), Thomas, Paramanandam (author)
In this study, a method for the bacterial disinfection of drinking water in the water storage systems based on the electric potential generated from a piezoelectric wind energy harvester is presented. First, an efficient galloping piezoelectric wind energy harvester is designed by adding curve- shaped attachments to the bluff body of the...
journal article 2022
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Bicudo, Bruno (author), Van Der Werff, Bart Jan (author), Medema, G.J. (author), van Halem, D. (author)
Electrochemical water treatment is gaining increasing popularity due to its wide range of potential applications, its decreasing costs, and its suitability as a decentralized treatment alternative, but mainly due to it being considered a "green technology". In the field of municipal wastewater treatment, the use of iron electrocoagulation (Fe...
journal article 2022
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Spit, Tiza (author)
As antibiotics now save millions of human and animal lives annually, the World Health Organisation (WHO, 2019) declared Antibiotic Resistance (AR) as the number five most dangerous risk to global health. Several researchers mention WWTPs to be an important source for AR as the growth of bacteria is stimulated in an environment with a selective...
master thesis 2021
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van der Werff, Bart-Jan (author)
Due to the quick growth in human population and subsequently a high rate of urbanization, fresh water sources are under pressure. Estimated 1.8 billion people drink water from potentially sewage-contaminated sources and also the presence of antibiotic resistant bacteria in sewage has made the improper treatment of wastewater effluent an emerging...
master thesis 2021
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Balasubramanian, S. (author), Yu, K. (author), Vasquez Cardenas, D. (author), Aubin-Tam, M.E. (author), Meyer, Anne S. (author)
Biofilms are three-dimensional (3D) bacterial communities that exhibit a highly self-organized nature in terms of their composition and complex architecture. Bacteria in biofilms display emergent biological properties, such as resistance to antimicrobials and disinfectants that the individual planktonic cells lack. Bacterial biofilms possess...
journal article 2021
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Peng, Liqi (author), Wang, Feifei (author), Zhang, Di (author), Fang, Chao (author), van der Hoek, J.P. (author), Chu, Wenhai (author)
The high chlorine dosages in wastewater treatment plants during the COVID-19 pandemic may result in increased formation of disinfection by-products (DBPs), posing great threat to the aquatic ecosystem of the receiving water body and the public health in the downstream area. However, limited information is available on the effect of biological...
journal article 2021
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Shi, Haoran (author)
Drinking water safety is of great concern all around the world. Two strategies can be pursued to maintain biological stable drinking water during distribution in the network: (i) without a residual disinfectant, in which bacterial growth is controlled by very low biodegradable nutrients in the water by extensive pre-treatment and a well...
master thesis 2020
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Willemsen, Mark (author)
Introduction: Smart Medics Company is a startup from the Delft University of Technology, looking to bring an affordable Video laryngoscope (VL) into hospitals in low-resource regions. This research aims to seek the best suitable transparent material to act as a lens, sealing off a compartment containing an endoscope, as well as, bring forth a...
master thesis 2020
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Wu, HAO (author)
Microorganisms may cause problems in drinking water distribution system (DWDS). It is hard to control and always forms the biofilm, which can result in the deterioration of drinking water quality. At household’s tap, due to the favorable conditions, which incurs an easier formation of biofilm. Therefore, the idea of secondary disinfection at...
student report 2020
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van der Poel, Suzanne (author)
Due to increasing water consumption and stress on natural water resources, enhanced treatment of wastewater and reuse of water are becoming more important. Treated municipal wastewater has potential to be used for irrigation purposes, but pathogens are a major concern to protect environmental and human health. Therefore, an advanced treatment...
student report 2020
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Floriana Ayumurti Kukuh, Ayu (author)
The quality of treated drinking water in the distribution network might deteriorate even though the quality of water leaving the treatment plant has been set to be at the highest level. Regrowth of microorganisms or known as microbiological instability is found to be one of the responsible causes for the change of the water quality. This...
student report 2019
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Keuten, M.G.A. (author)
As swimmers enter a swimming pool, they release micro-organisms, particles and soluble substances. While chlorine is often used to inactivate micro-organisms, a side-effect of chlorination is the formation of unwanted disinfection by-products. In order to reduce these by-products, more knowledge is needed on the release of pollutants by bathers...
doctoral thesis 2018
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