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Dissertations / Theses on the topic 'Disinfection technology'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Blazo, Christopher. "Wastewater Disinfection with HYDROFLOW Technology." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1611.

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Disinfection is the final and very important step of wastewater treatment to maintain healthy ecosystems. Although chlorination is the most prevalent wastewater disinfection method, there are serious safety concerns and ecological problems associated with its use. The purpose of this study was to test the feasibility of using a HydroFLOW 60i unit for wastewater disinfection, as an alternative to chlorination. The study was performed using two different reactors, namely, a bench-scale laboratory batch reactor, and a continuous flow, pilot unit. Using the batch reactor, it was found out that the

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2

Salih, Mayson. "Disinfection Procedures: Effects on the dimensional accuracy of Gypsum casts." Thesis, University of the Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_3067_1257931628.

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<p>The aim of the study was to assess the dimensional accuracy of Gypsum models following chemical disinfection of the impressions and to compare it with the accuracy of gypsum models exposed to microwave irradiation disinfection. Results indicated that the dimensional accuracy of the gypsum models disinfected in a microwave oven did not differ significantly from models in the control group. Except for models produced from SS white (SS White group, England) impressions where models irradiated in microwave exhibit significant improvement in the dimensional accuracy when compared with control gr

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3

Narsetti, Renuka. "Application of pulsed electric fields and magnetic pulse compressor technology in water disinfection." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/5842.

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Thesis (M.S.)--University of Missouri-Columbia, 2005.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (January 24. 2007) Includes bibliographical references.

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4

Pulido, Maria Elena. "Evaluation of an electro-disinfection technology as an alternative to chlorination of municipal wastewater effluents." ScholarWorks@UNO, 2005. http://louisdl.louislibraries.org/u?/NOD,283.

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Thesis (Ph. D.)--University of New Orleans, 2005.<br>Title from electronic submission form. "A dissertation ... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering and Applied Science"--Dissertation t.p. Vita. Includes bibliographical references.

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5

Velez, Rivera Edwin. "A review of chemical disinfection methods for minimally processed leafy vegetables." Thesis, Manhattan, Kan. : Kansas State University, 2005. http://hdl.handle.net/2097/103.

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6

Armioun, Shaghayegh. "Using Ultrasound as a Pretreatment Method for Ultraviolet Disinfection of Wastewaters." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20263.

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In this study, the effects of neutral particles addition on the breakage of wastewater flocs toimprove the efficiency of sonication pretreatment for UV disinfection process have been studied.Kaolin particles as a potentially useful material that is neutral, natural and cheap were added towastewater samples prior to sonication. Results obtained in this study indicated that hard andsmall kaolin particles do not have any significant effect on the particle breakage efficiency byultrasound. The addition of kaolin particles did not significantly increase the cavitation activity(as characterized by p

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7

Bush, Kelly Lynn. "Assesment of drinking water quality using disinfection by-products in a distribution system following a treatment technology upgrade." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2447.

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Chlorine is the most widely used disinfectant for drinking water treatment. Chlorine canreact with natural organic matter (NOM) in water sources resulting in the formation of potentially carcinogenic disinfection by-products (DBPs). The most common DBPs measured in chlorinated drinking water distribution systems are trihalomethanes (THMs) and haloacetic acids (HAAs). In 2005, the City of Kamloops, British Columbia upgraded the drinking water treatment system to ultrafiltration membrane treatment. The objective of this study was to determine the extent to which upgrades to a drinking water trea

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8

Xie, Mingyu. "Model predictive control of water quality in drinking water distribution systems considering disinfection by-products." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7207/.

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The shortage in water resources have been observed all over the world. However, the safety of drinking water has been given much attention by scientists because the disinfection will react with organic matters in drinking water to generate disinfection by-products (DBPs) which are considered as the cancerigenic matters. Although much research has been carried out on the water quality control problem in DWDS, the water quality model considered is linear with only chlorine dynamics. Compared to the linear water quality model, the nonlinear water quality model considers the interaction between ch

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9

Nordin, Annika. "Ammonia based sanitation technology : safe plant nutrient recovery from source separated human excreta /." Uppsala : Department of Biometry and Engineering, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/10626290.pdf.

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10

Mane, M. B. "Studies in newer methodologies and materials/ material modifications for environmental, pollution control applications specifically for water treatment and desulfurization." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune-411008, 2021. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/6063.

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Safe and clean environment is most essential for the ecosystem and Water and Air are two most critical components. The present research addresses two specific studies in this regard; one pertaining to the safe water and other pertaining to clean air, Disinfection of water and Desulfurization of transportation fuels. Safe drinking water is necessary to prevent occurrence of large number of waterborne diseases and to save millions of lives, one of the most priority subjects for developing country like India. The main objective of this research is to develop methodology which provides safe and he

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11

Chytil, Lukáš. "Řídící systém s HMI displejem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377145.

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This master thesis describes the design of control unit, which has the task to operate industrial facilities for disinfection of swimming pools or living rooms. The designed control unit is trying to regulate power and flow rate, which is controlled by electronic valve with a flowmetr. The whole design is aimed at minimizing operating costs (mainly consumed liquid oxygen). Interaction with the operator is ensured by the HMI display. There is also an effort to highlight the importance of HMI applications in the industry.

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12

Oosthuysen, Jeanné. "Infection prevention and control audit-feedback instrument for oral health care in South Africa." Thesis, Bloemfontein: Central University of Technology, Free State, 2015. http://hdl.handle.net/11462/669.

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Thesis (D. Tech. (Biomedical Technology)) -- Central University of Technology, Free State, 2015<br>This study reviewed national and international literature to develop an audit-feedback instrument (AFI) to monitor adherence of South African oral health care facilities with compliance to infection prevention and control precautions. In a multi-phased literature search, existing infection prevention and control recommendations, guidelines and audit-feedback instruments were reviewed and broadened to include “dental audit tools”, as well as audit tools from other health care disciplines. Audit-fe

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13

Haaken, Daniela. "Innovative Desinfektionsverfahren zur Brauchwassergewinnung in der dezentralen Abwasserbehandlung - Elektrolyse und UV/Elektrolyse-Hybridtechnik." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-166834.

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According to estimates of the United Nations Environment Programme (UNEP), more than 1.8 billion people will be living in countries or regions with absolute water scarcity by 2025. The pressure on water resources is increased not only in arid and semiarid regions, but also in fast growing megacities around the world as a result of, amongst other factors, the changing nutritional and consumer behavior (rising living standards). Over 90 % of the annual water consumption of the newly industrializing and developing countries in the arid and semiarid climate zone is used for agricultural irrigation

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14

Mücke, Naieli. "Sensibilidade celular e de biofilme de Enterococcus sp. aos desinfetantes de uso industrial." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2184.

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CNPQ<br>Enterococcus sp. podem ser isolados de seres humanos, animais e ambiente; possuem alta tolerância a fatores extremos como pH, temperatura e concentração salina. Desempenham papel importante como cultura starter em vários produtos como iogurtes e queijos, além de serem produtores de enterocinas. Contudo, é crescente seu potencial como agentes causadores de sérias infecções, podendo adquirir alta resistência a antimicrobianos e biocidas. Os equipamentos na indústria alimentícia estão propensos à alta contaminação microbiológica devido à presença de substratos para os microrganismos, e

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15

Mogotsi, Lerato Bonolo. "An assessment of the lipopolysaccharide toxicity of rough and smooth escherichia coli strains cultivated in the presence of zygosaccharomyces bailli." Thesis, Bloemfontein : Central University of Technology, Free State, 2011. http://hdl.handle.net/11462/151.

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Thesis (M. Tech. Environmental health) -- Central University of technology, Free State, 2011<br>In nature microorganisms do not exist alone, but in association with one another. These kinds of associations can also be found in food industries, where cells of the same or different species can attach to pipes (biofilm formation) and a variety of surfaces in food processing environments and in food product such as yoghurt which can contain both yeast and bacteria originating from the starter culture as well as fruit. To control food spoilage organisms and food-borne pathogens preventative measur

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16

Trozell, Oskar, Daniel Wiman, Elis Wiggins, Elin Stigenberg, Alva Bergström, and Emilia Andersson. "Sustainable water treatment processes : Scenarios for a better environment in Håbo municipality." Thesis, Uppsala universitet, Institutionen för kemi - Ångström, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-448625.

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Clean drinking water is a vital part of our society and a basic human right. With an ever growing population and a decreasing quality of raw water, new methods need to be introduced to keep up with the demand for clean, biostable, and sustainable production of drinking water. The aim of this study is to evaluate Håbo municipality’s increasing usage of chemicals in their water treatment process and to investigate current and future possible technologies for water treatment for Håbo to make their process more sustainable. In this study four scenarios of different cost and change of today’s water

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17

"Utilization of ferrate as a disinfection technology for wastewater reuse." Tulane University, 2012.

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18

"Utilization of Ferrate as a Disinfection Technology for Wastewater Reuse." Tulane University, 2013.

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19

Vilarinho, Ana Margarida Inácio. "Innovative strategies for the disinfection of drinking water distribution systems: antimicrobial potential of fenton reaction." Dissertação, 2015. https://repositorio-aberto.up.pt/handle/10216/89448.

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20

LIN, JIAN-CHENG, and 林建丞. "Development of a Large-area, UV-C LED Disinfection Light Source on a Flexible Package Technology." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/xhnjmb.

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碩士<br>大葉大學<br>醫療器材設計與材料碩士學位學程<br>107<br>This dissertation focuses on the wavelength of 280nm, adjusts the thickness and area of the substrate, and combines the TracePro optical software to simulate the overall package structure, optical irradiation range and light intensity. Successfully obtained a large-area UV-C LED (Deep Ultraviolet Light-Emitting Diodes) disinfection light source on a flexible package with an area of 50×50 mm2 and a bend diameter of 3 cm. Finally, the disinfection light source was used to carry out the Escherichia coli disinfection test. The disinfection effect was achieve

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21

Malheiro, Joana Filipa Fernandes. "Development of Biocide Formulations Based on Phytochemical Products for Surface Disinfection." Doctoral thesis, 2020. https://hdl.handle.net/10216/130105.

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22

Malheiro, Joana Filipa Fernandes. "Development of Biocide Formulations Based on Phytochemical Products for Surface Disinfection." Tese, 2020. https://hdl.handle.net/10216/130105.

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23

Vilarinho, Ana Margarida Inácio. "Innovative strategies for the disinfection of drinking water distribution systems: antimicrobial potential of fenton reaction." Master's thesis, 2015. https://repositorio-aberto.up.pt/handle/10216/89448.

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24

Pinho, Silvia Cardinal. "Disinfection of healthcare waste (HCW) by alkaline hydrolysis, its efficiency and emissions." Doctoral thesis, 2015. https://repositorio-aberto.up.pt/handle/10216/78927.

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25

Pinho, Silvia Cardinal. "Disinfection of healthcare waste (HCW) by alkaline hydrolysis, its efficiency and emissions." Tese, 2015. https://repositorio-aberto.up.pt/handle/10216/78927.

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26

Anderson, Lindsay. "ANION EXCHANGE RESIN TECHNOLOGY FOR NATURAL ORGANIC MATTER REMOVAL FROM SURFACE WATER." 2013. http://hdl.handle.net/10222/42642.

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Natural organic matter (NOM) is present in all surface waters as a result of decaying vegetation, biological activity, and organic soil. Alternative NOM removal processes such as anion exchange resins (AERs) have shown NOM removals typically ranging between 50 to 90%, with up to 99% removal achieved in some cases. The first portion of this study evaluated the performance of two AERs; a conventional Type 1 AER and magnetic ion exchange resin (i.e. MIEX®) for NOM removal from surface water quantified by UV254, dissolved organic carbon (DOC), and specific UV absorbance (SUVA). Samples were also

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27

宋曉帆. "Apply Control Technology and High Speed Data Acquistion System monitor for Removal of the Functional Groups and Disinfection By-Products (DBPs) from Eutrophic Water Sources." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/66178964591966102356.

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碩士<br>東海大學<br>環境科學系<br>91<br>Abstract The objective of this study was to investigate the relationship among distribution of natural organic matter, functional groups and disinfection by-products formation potential during the pre-ozonation, granular activated carbon and membranes process. In this study, we used three resins: XAD-8, AG-MP-50 and IRA-93 to classify seven categories of NOM from eutrophic water taken from Te-Chi reservoir. Experimental results show hydrophobic fractions and hydrophobic fractions contribute 46.6% (humic acids was 8%, fulvic acids was 11%) and

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28

"Has ultraviolet disinfection technology reached critical mass in the wastewater treatment industry? A case study network analysis of facilities in Vermont and New Hampshire to determine the status of opinion leadership acceptance of ultraviolet light as a replacement for chlorine in the disinfection process." Tulane University, 2004.

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A critical mass of adopters, a majority of which are usually opinion leaders, is required for the diffusion of any innovation to become self-sustaining. All public wastewater facilities in Vermont and New Hampshire were surveyed to determine which facilities exchange information, which have adopted UV, and what characteristics are common among adopters, non-adopters, and opinion leaders. Two networks, based on the exchange of general information and information about disinfection technology, were constructed using UCINET; they indicate UV has likely been adopted by a critical mass. Opinion lea

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29

Venâncio, João Pedro Ferraz. "Combination of Coagulation/Flocculation and Fenton processes in a WWTP Tertiary Treatment: Disinfection of Treated Urban Effluents for Reuse." Master's thesis, 2021. https://hdl.handle.net/10216/135279.

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30

Venâncio, João Pedro Ferraz. "Combination of Coagulation/Flocculation and Fenton processes in a WWTP Tertiary Treatment: Disinfection of Treated Urban Effluents for Reuse." Dissertação, 2021. https://hdl.handle.net/10216/135279.

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31

Haaken, Daniela. "Innovative Desinfektionsverfahren zur Brauchwassergewinnung in der dezentralen Abwasserbehandlung - Elektrolyse und UV/Elektrolyse-Hybridtechnik." Doctoral thesis, 2014. https://tud.qucosa.de/id/qucosa%3A28686.

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According to estimates of the United Nations Environment Programme (UNEP), more than 1.8 billion people will be living in countries or regions with absolute water scarcity by 2025. The pressure on water resources is increased not only in arid and semiarid regions, but also in fast growing megacities around the world as a result of, amongst other factors, the changing nutritional and consumer behavior (rising living standards). Over 90 % of the annual water consumption of the newly industrializing and developing countries in the arid and semiarid climate zone is used for agricultural irrigation

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