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Dissertations / Theses on the topic 'Urban effluents'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

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1

Tuckwell, Rebecca. "The impact on receiving waters of pharmaceutical residues and antibiotic resistant faecal bacteria found in urban waste water effluents." Thesis, Middlesex University, 2015. http://eprints.mdx.ac.uk/18521/.

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Pharmaceuticals intended for human use are frequently detected in the aquatic environment. This is predominantly from their excretion following ingestion and subsequent discharge in domestic sewage. Wastewater treatment provides an opportunity to control their release to surface waters however, their removal is often incomplete. This thesis addresses this pharmaceutical pathway and the potential impact on the aquatic environment. The progress of bezafibrate, carbamazepine, ciprofloxacin and clarithromycin were monitored through the treatment stages (screened sewage, settled sewage and final ef

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2

Crousier, Claire. "Etude d'un procédé d'ozonation catalytique pour l'élimination des micropolluants dans les effluents urbains." Thesis, Toulouse, INSA, 2015. http://www.theses.fr/2015ISAT0046.

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Les travaux menés au cours de cette thèse ont pour objectif d’étudier l’applicabilité du procédé d’ozonation catalytique TOCCATA® au traitement avancé d’eaux résiduaires urbaines pour le contrôle des émissions en micropolluants. Ce travail couvre la détermination des propriétés physico-chimiques, structurelles et de réactivité de deux catalyseurs et l’optimisation de leur conditionnement pour le procédé d’ozonation catalytique. La caractérisation hydrodynamique du réacteur à co-courant ascendant triphasique en lit fixe utilisé pour la mise en œuvre du procédé a été également réalisée. Les proc

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3

Gcilitshana, Onele. "Quality indices of the final effluents of two sub-urban-based wastewater treatment plants in Amathole District Municipality in the Eastern Cape Province of South Africa." Thesis, University of Fort Hare, 2014. http://hdl.handle.net/10353/d1019816.

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Worldwide, water reuse is promoted as an alternative for water scarcity, however, wastewater effluents have been reported as possible contaminants to surface water. The failure of some wastewater treatment processes to completely remove organic matter and some pathogenic microorganisms allows them to initiate infections. This manifests more in communities where surface water is used directly for drinking. To assess water quality, bacteria alone cannot be used as it may be absent in virus-contaminated water. This study was carried out to assess the quality of two wastewater treatment plant effl

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4

Millot, Yoann. "Use of alternative matrix materials and configurations for optimizing nitrogen removal in constructed wetlands." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI021/document.

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L’assainissement d’effluents résiduaires urbains par filtres plantés de roseaux (FPR) rencontre, depuis plus de trois décennies, un engouement croissant en raison de ses remarquables performances de traitement ainsi que de considérations technico-économiques et écologiques. Néanmoins, des objectifs de traitement de plus en plus contraignants, ainsi qu’un marché de plus en plus concurrentiel, amènent la nécessité d’une meilleure connaissance des processus afin d’en optimiser la conception en fonction du contexte. Une attention toute particulière a été portée au traitement de l’azote, au cours d

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5

Meng, Fanlin. "The impact of innovative effluent permitting policy on urban wastewater system performance." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/19393.

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This thesis investigates innovative effluent point-source permitting approaches from an integrated urban wastewater system (UWWS) perspective, and demonstrates that three proposed permitting approaches based on optimal operational or control strategies of the wastewater system are effective in delivering multiple and balanced environmental benefits (water quality, GHG emissions) in a cost-efficient manner. Traditional permitting policy and current flexible permitting practices are first reviewed, and opportunities for permitting from an integrated UWWS perspective are identified. An operationa

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6

Yahi, Hamid. "Floculation des effluents lagunaires et des eaux urbaines par régulation de Ph." Montpellier 2, 1994. http://www.theses.fr/1994MON20083.

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La floculation-decantation des matieres en suspension d'effluents lagunaires peut etre obtenue par co-precipitation avec l'hydroxyde de magnesium par alcalinisation a la soude ou a la chaux. L'etude systematique realisee en reacteur ferme et en unite continue a montre que la floculation depend principalement du ph. Des efficacites superieures a 90% sont obtenues a ph compris entre 11,5 et 11,8. La concentration en magnesium de l'effluent, egale a 100 mg/l, n'est pas limitante. L'etude a montre egalement que le rendement de la floculation n'est pas affecte par la concentration en matieres en su

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7

Simko, Andrew Jack. "Performance Analysis of an Urban Stormwater Best Management Practice Retrofit." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/64931.

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Historically, the primary objective of traditional stormwater best management practices (BMPs) was to attenuate peak runoff discharges from urban areas. There has been growing demand to construct BMPs that improve stormwater runoff quality to reduce pollutant loading into downstream water bodies. A BMP located in Herndon, Virginia was retrofitted in 2009. Previously a dry detention pond, the new BMP design contains permanent wet pools as well as elements of Low Impact Development practices. A performance analysis was conducted on the retrofit to determine if the BMP was removing pollutants fro

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8

Chevremont, Anne-Celine. "Optimisation multivariée d’un traitement des eaux usées par DEL-UV en vue d’une réutilisation pour l’irrigation Multivariate optimization of fecal bioindicator inactivation by coupling UV-A and UV-C LEDs Effect of coupled UV-A and UV-C LEDs on both microbiological and chemical pollution of urban wastewaters Impact of watering with UV-LED-treated wastewater on microbial and physico-chemical parameters of soil Fate of carbamazepine and anthracene in soils watered with UV-LED treated wastewaters." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4735.

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Le développement de nouvelles technologies pour le recyclage des eaux usées est une priorité pour les régions arides et semi-arides tels que les pays du bassin méditerranéen. L'objectif de ce travail a été, dans un premier temps, de développer un système de traitement tertiaire des eaux usées en testant l'efficacité de diodes électroluminescentes émettant des UV-A et/ou des UV-C (DEL-UV) sur l'inactivation de souches bactériennes indicatrices de pollution fécale (Escherichia coli et Enterococcus faecalis) puis sur des effluents urbains, en étudiant la diminution des pollutions microbiennes et

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9

Le, Bel Paul David. "Performance Evaluation of a Low Impact Development Retrofit for Urban Stormwater Treatment." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/48656.

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The goal of Low Impact Development (LID) is to mimic the pre-development hydrologic regime of a catchment through infiltration, filtration, storage, evaporation, and detention of post-development runoff using small-scale hydrologic controls close to the source. A LID facility located in Northern Virginia was examined for pollutant removal and hydrologic performance. The treatment train included four in-line grass swales followed by a bioretention cell with a gravel base. The facility retained 85% of the rainfall. Influent and effluent pollutant loads were calculated using three common substitu

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10

Slye, Jaime L. "Relationships of Benthic Macroinvertebrate Community Structure with Land-use, Habitat, In-stream Water Chemistry, Depositional Sediment Biofilm Fatty Acids, and Surfactants in the Effluent Dominated Texas Trinity River." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc407738/.

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The Trinity River is an urbanized, effluent-dominated river, and is heavily relied upon for drinking water. The benthic macroinvertebrate community has been monitored for over 20 years, with the focus of this dissertation on three studies (1987-88, 2005, and 2011). Water quality improvement following dechlorination resulted in increased benthic metrics. Overall habitat quality, in-stream cover, surface water total organic carbon, sediment total organic carbon, near-field urban land-use, near-field forested land-use, surface water surfactant toxic units, and depositional sediment biofilm fat

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11

Yeomans, William Easton. "The effect of treated sewage effluent (urban wastewater) on the trichodinid (protozoa: ciliophora) communities ectozoic on three-spined sticklebacks, Gasterosteus aculeatus L." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367184.

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12

ZAMBELLO, ELENA. "Occurrence of pharmaceuticals and personal care products in hospital effluent, urban wastewater and combined sewage overflow. Options for their management and treatment." Doctoral thesis, Università degli studi di Ferrara, 2016. http://hdl.handle.net/11392/2403379.

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E’ stato appurato che il consumo mondiale di farmaceutici ad uso umano e dei prodotti per la cura personale (FPCPs) è in aumento a causa dell'invecchiamento della popolazione e del miglioramento delle condizioni di vita delle persone. Una volta somministrati, i farmaci (FCs) vengono metabolizzati dal corpo umano e i loro residui vengono escreti attraverso l’urina e le feci. Anche i prodotti per la cura personale (PCPs), utilizzati per la pulizia e l’igiene, vengono scaricati nelle acque reflue dopo l'uso. Una volta raggiunto l'impianto di depurazione, questi composti possono subire modifiche a

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13

Bergheim, Kirtan, Alexander Dreuse, and Jakob Reif. "Ökonomische und ökologische Bewertung der Auswirkungen des demografischen Wandels auf die Siedlungsentwässerung." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-85077.

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Der demografische Wandel in Sachsen stellt Unternehmen der Siedlungsentwässerung vor neue Herausforderungen und innovative Lösungsansätze. Eine Abnahme der Siedlungsdichte infolge rückgängiger Bevölkerungszahlen bringt neue Anforderungen an das Ver- und Entsorgungsnetz für Wasser mit sich. In den nächsten Jahren werden sich im Bereich der Siedlungsentwässerung des Freistaates aufgrund der Wasserrahmenrichtlinie, nach der bis 2015 alle sächsischen Grundstücke an eine Abwasserentsorgungsanlage angeschlossen werden müssen, weitreichende Veränderungen ereignen. Die Lebensdauer verschiedener Bestan

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14

Bergheim, Kirtan, Alexander Dreuse, and Jakob Reif. "Ökonomische und ökologische Bewertung der Auswirkungen des demografischen Wandels auf die Siedlungsentwässerung: Teil 2: Ökonomische Bewertung." Technische Universität Dresden, 2011. https://tud.qucosa.de/id/qucosa%3A24928.

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Der demografische Wandel in Sachsen stellt Unternehmen der Siedlungsentwässerung vor neue Herausforderungen und innovative Lösungsansätze. Eine Abnahme der Siedlungsdichte infolge rückgängiger Bevölkerungszahlen bringt neue Anforderungen an das Ver- und Entsorgungsnetz für Wasser mit sich. In den nächsten Jahren werden sich im Bereich der Siedlungsentwässerung des Freistaates aufgrund der Wasserrahmenrichtlinie, nach der bis 2015 alle sächsischen Grundstücke an eine Abwasserentsorgungsanlage angeschlossen werden müssen, weitreichende Veränderungen ereignen. Die Lebensdauer verschiedener Bestan

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15

Silva, Sónia Raquel Lopes Sequeira Santos. "Degradation of anticancer drugs in urban effluents by ozonation." Master's thesis, 2019. https://hdl.handle.net/10216/122762.

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16

Silva, Sónia Raquel Lopes Sequeira Santos. "Degradation of anticancer drugs in urban effluents by ozonation." Dissertação, 2019. https://hdl.handle.net/10216/122762.

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17

Cerqueira, Paulo Ricardo Gonçalves. "Microalgae for the tertiary treatment of urban effluents in a pilot-scale system." Master's thesis, 2020. http://hdl.handle.net/10400.1/16862.

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Este estudo relata o primeiro teste piloto dos fotobiorreatores GreenDune. No tratamento terciário de águas residuais urbanas, blooms naturais de microalgas foram em duas condições sazonais diferentes: outono e inverno. Foram realizados o isolamento e identificação de estirpes de microalgas, avaliação da eficiência de remoção de nutrientes pelas microalgas e avaliação das melhores condições operacionais e composição bioquímica da biomassa produzida. Na fase de caracterização do bloom, as principais classes que compuseram o consórcio foram: Cyanophyceae, Chlorophyceae e Bacillariophyceae. Para

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18

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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19

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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20

Chevremont, Anne-celine. "Optimisation multivariée d’un traitement des eaux usées par DEL-UV en vue d’une réutilisation pour l’irrigation." Thesis, 2012. http://www.theses.fr/2012AIXM4735.

Full text

Abstract:

Le développement de nouvelles technologies pour le recyclage des eaux usées est une priorité pour les régions arides et semi-arides tels que les pays du bassin méditerranéen. L'objectif de ce travail a été, dans un premier temps, de développer un système de traitement tertiaire des eaux usées en testant l'efficacité de diodes électroluminescentes émettant des UV-A et/ou des UV-C (DEL-UV) sur l'inactivation de souches bactériennes indicatrices de pollution fécale (Escherichia coli et Enterococcus faecalis) puis sur des effluents urbains, en étudiant la diminution des pollutions microbiennes et

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21

Mason, Bram. "The study of pollutant removal from urban stormwater using a constructed wetland." Thesis, 1994. https://vuir.vu.edu.au/32998/.

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The purpose of this investigation was to examine the Shankland Valley Wetland for its ability to treat urban stormwater pollutants. Monitoring was conducted during two moderate storm events and two non-storm events. Pollutant concentration was measured at 24 hour intervals over periods of approximately one week.

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