This thesis examines the impact of urban water infrastructure on the Ottawa River through an exploration of the City of Ottawa's historical development from the early modern period to the present. The primary aim is to explain how the Ottawa River came to be removed or ignored from the City of Ottawa's urban development strategy. The thesis focuses on the periods of 1910-1920 (early modernity) and 1999-2012 (present). The theories applied are risk, risk management, normal accident theory and the politics of infrastructure. The data and information for this thesis were primarily retrieved from the City of Ottawa website as well as from the archives of the City of Ottawa. The thesis identifies several factors explaining why the Ottawa River has been mistreated over time, as well as the challenges involved in reforming present-day practices and infrastructure. Several recommendations to fix the situation are advanced.

Submitted by Biblioteca Central (biblioteca@unicap.br) on 2018-02-16T17:32:38Z No. of bitstreams: 1 rodrigo_almeida_galdino.pdf: 1745526 bytes, checksum: 6dcdee092fcba3b3b09ac36498989ac9 (MD5) / Made available in DSpace on 2018-02-16T17:32:38Z (GMT). No. of bitstreams: 1 rodrigo_almeida_galdino.pdf: 1745526 bytes, checksum: 6dcdee092fcba3b3b09ac36498989ac9 (MD5) Previous issue date: 2017-11-27 / The state of Pernambuco is becoming increasingly industrialized and diversified array, with projects in the areas of petroleum refining, petrochemical, steel, shipbuilding and offshore industry, automotive, and electrical equipment. In the current global context, where one strives for environmental preservation, the major challenge faced by these large developments has been to ensure the quality and continuous development of its processes without compromising local environmental quality. Therefore it is of paramount importance to reduce the amount and / or improve the quality of wastewater generated by various industries and their production processes. The systems of dissolved air flotation (DAF) are more compact than alternative systems in water-oil separation, and they allow the recovery of raw materials in the treatment of these industrial effluents. In this sense, the goal of this project is to develop an effective strategy for automation and process control for a type of FAD, in the treatment of oily waters. The findings demonstrate that it is possible to maintain the level of the fluid at a reference value established by the operator using the software program LabVIEW through the application of classic proportional integral derivative controllers. Using this control tool, the efficiency of water-oil separation in the pilot flotation chamber prototype was increased to nearly 98%. / O estado de Pernambuco está se tornando cada vez mais industrializado e com matriz diversificada, com empreendimentos nas áreas de refino de petróleo, petroquímica, siderurgia, indústria naval e offshore, automobilística, e de equipamentos para energia elétrica. No contexto mundial atual, onde se prima pela preservação ambiental, o grande desafio enfrentado por esses grandes empreendimentos tem sido garantir a qualidade e o desenvolvimento contínuo de seus processos, sem comprometer a qualidade ambiental local. Portanto é de suma importância reduzir a quantidade e/ou melhorar a qualidade dos efluentes gerados pelos mais diversos setores industriais e seus respectivos processos de produção. Os sistemas de flotação por ar dissolvido (FAD) são mais compactos que os sistemas alternativos na separação água-óleo, além de possibilitarem a recuperação de matéria-prima no tratamento desses efluentes industriais. Neste sentido, o objetivo deste projeto é desenvolver uma estratégia eficiente de automação e controle de nível para um processo do tipo FAD, no tratamento de águas oleosas. Os resultados obtidos demonstram que a partir da aplicação de técnicas de controladores clássicos PID, foi possível manter o nível do líquido em um valor de referência estabelecido pelo usuário a partir do software LabVIEW. Com a adoção da referida ferramenta de controle, a eficiência de separação água-óleo na câmara de flotação do protótipo piloto ficou próximo a 98 %, validando a estratégia de controle adotada.

With a population of over 13 million, Istanbul is one of the biggest city in Europe. The possible increase of population in the future may bring serious problems of water supply after a few decades. Therefore, it is crucial to look for good solutions to problems and potential challenges in water supply and water demand. This paper intended to investigate the currently existing problems in water and wastewater management practices in Istanbul from a supply-demand-reuse perspective; and to look for possible opportunities for a future improvement in order to achieve a sustainable urban water management system in Istanbul by promoting its wastewater management system. In this paper, two interviews of professionals, and a survey in Istanbul city area were conducted for obtaining gather primary data. Analysis of relative literatures is applied for grasping an accurate picture of water and wastewater management in Istanbul. According to the study, authorities are making great efforts to meet the ever increasing demand for water. From a supply-demand-reuse management perspective, Istanbul is still at the stage of supply management with sufficient wastewater treatment. However, there is not much sign of a demand management model, as inadequate effort has been devoted to controlling the increase of water demand. Although reuse management may still be a distant goal for Istanbul to achieve, a good preparation can be started by promoting and further improving the current wastewater management system, as wastewater reuse, if properly managed, will be the best solution that will lead to achieving long-term benefits.

This diploma thesis is focused on the topic of membrane technologies used in wastewater treatment. The research part of the thesis deals with membrane separation of activated sludge, and the focus is on the submerged membrane modules. The thesis contains basic principles of MBR systems, an overview of used membrane modules, modes of operation, advantages and disadvantages of using this process. The practical part of the thesis proposes the intensification of WWTP Perná with using MBR technology. This part includes the technical-economic assessment of the activation WWTP with the third stage of treatment and activation WWTP with MBR.

The diploma thesis deals with the design of variants of sewerage and wastewater disposal in the selected municipality. Solved area for this work is the village Rovečné with the local part of Malé Tresné. The aim of this work is to propose a suitable variant and to assess it from the economic point of view with regard to grant titles. The author deals with the selection of a suitable method of sewerage of the area of interest and subsequent waste water disposal, based on the relevant standards and related regulations. The proposed options are then assessed from an economic point of view and a suitable solution option is recommended.

This diploma thesis presents reader with current knowledge in the field of gray wastewater reuse. The theoretical part describes the current state of water in the world, thus characterizes wastewater and describes its treatment. Further, this section describes the possibility of obtaining thermal energy from wastewater. At the end of the theoretical part, the reader is presented with some existing buildings in the Czech Republic that use the wastewater re-use technology system. In the following practical part, all the knowledge from the theoretical part are applied for a concrete project of construction of a graywater re-use technology system in the area of Vlněna in Brno city.

The diploma thesis deals with the possibilities of sewerage and wastewater disposal in the recreational centre near Vřesovice. The purpose of the diploma thesis is the elaboration of variant solutions of sewerage, including the proposal of possibilities of wastewater treatment, economic evaluation of variants, their subsequent comparison and recommendation of the most suitable variant. The diploma thesis deals with the design of variants of wastewater treatment with subsequent discharge into surface waters. Finally, the advantages and disadvantages of the individual variants of sewerage are summarized with a comparison of costs and subsequent recommendation of the variant.

This master thesis deals with the design of a wastewater treatment plant, which will be controlled by a PLC. The theoretical part describes the types of wastewater and sewage systems that are important in the design of wastewater treatment plants. The thesis also describes programmable logic controllers, theirs programming languages, SCADA (Supervisory Control And Data Acquisition) systems and automation.The thesis also deals with theoretical description of wastewater treatment plants, their functions and security. Next part describes the design of the wastewater treatment plant. The last part of the thesis describes implementation of the wastewater treatment plant controlled by a PLC.

This work deals with factual building, which is a sewerage in the town of Rokytnice nad Rokytnou. The aim of this work is to propose measures to reduce inflow of redundant water to the local wastewater treatment plant. A method chosen to achieve it is an assesment the most problematic location and making a plan. This work includes among other outputs from the primary exploration and a condition survey, hydrological analysis and designing of two measures. These designs are complemented by the calculation of investment costs and their comparison. Appendix to this work contains drawings and the sheets from condition survey.

Antibiotics are one of the greatest discoveries in medicine, and emerged resistances have become a global threat. It is theorized that a big part of the antibiotic resistance genes come from the environment, and wastewater treatment plants and hospitals are considered a great breeding ground for the spread of these. The aim of this project is to analyse the microbiome and resistome of the wastewater of Uppsala and to evaluate the efficiency in the elimination of antibiotic resistance genes and bacteria. Samples from the University Hospital and the influents, sand filter and effluent of the Wastewater Treatment Plant were collected, DNA was extracted and sequenced to be analysed through metagenomics to explore them taxonomically and looking for resistance genes. Bacteria were also isolated, and their resistances were analysed. Taxonomical differences became noticeable in Order, Family, Genus and Species, with an increase of diversity in the Effluent samples. A total of 233 resistance genes were found in all the samples. There was a clear reduction in the number of resistance genes in the Effluent samples. However, there was an important number of genes carried in these and some prevail through all the path. Within all the isolates collected, from a total of 11, three E. coli isolates, one C. freundii and one E. cloacae presented resistances. Our study shows that the effluent of the wastewater treatment plant of Uppsala is potentially causing a negative impact on the environment, flushing out water not completely free of antibiotic resistance genes and resistant bacteria.