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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1111

Bed filters for phosphorus removal in on-site wastewater treatment : Removal mechanisms and sustainability

Eveborn, David January 2010 (has links)
<p>For many surface waters, phosphorus (P) leaching is a serious problem that should be minimized to prevent eutrophication. In Sweden there is a demand for physical and technical development of high-performance P removal techniques to reduce phosphorus leaching from on-site wastewater treatment systems to the Baltic Sea. However, although these systems are designed to reduce eutrophication there are also other environmental impacts to be considered when implementing them in on-site systems; energy use and global warming potential are two examples. This study has investigated several bed filter materials (reactive media and natural soils) for their total environmental impact (in commercial applications) as well as for the predominating chemical phosphorus removal mechanisms. The use of life cycle assessment revealed that several reactive bed filters are relatively energy-consuming due to the material manufacturing process. Characterization of phosphorus compounds in used reactive media provided evidence for calcium phosphate precipitation as the predominating P removal mechanism in alkaline filter materials. However, in soil treatment systems with noncalcareous soils, batch experiments and extractions suggested that aluminium compounds were important for P removal. According to mass balance calculations that compared accumulated P with the estimated P load in a soil treatment system, the long term P removal capacity was very low; only 6.4 % of the applied phosphorus had been removed during 16 years of operation.</p>
1112

NATURAL RESOURCE VALUES IN REMOTE AREAS.

Orland, Brian Antony. January 1982 (has links)
No description available.
1113

The Impact of the Principles of International Environmental Law on Nuclear Law / Tarptautinės aplinkos teisės principų įtaka branduolinei teisei

Apolevič, Jolanta 22 September 2014 (has links)
The thesis presents an investigation of the direct and indirect impact of environmental legal principles on international nuclear law and the regulation of nuclear activities, seeking to offer an up-to-date material for decision-making institutions and society on the main challenges that are necessary to overcome in order to reach the situation where nuclear energy could in the most effective way contribute to the implementation of environmental aims and where the environment could be adequately protected against any risks of the possible transboundary damage caused by nuclear activities developed for peaceful purposes (the analysis carried out in the thesis adopts an ecocentric rather than anthropocentric approach). The environmental legal principles chosen as an object for the analysis are those that provide for the guidelines and directions for the development of the international norms of nuclear law as well as lay down the regime for protecting natural environment (environmental safeguards) and international liability for environmental damage caused as a result of nuclear activities (i.e., the principles of cooperation, sustainable development, prevention, precaution, polluter pays, and the principle of information). After defining the points of interaction between international environmental law and nuclear law, the analysis proceeds with the examination of problems related to the evolution of environmental legal principles and their perspectives in the area of the... [to full text] / Disertacijoje nagrinėjama tiesioginė ir netiesioginė aplinkos teisės principų įtaka tarptautinei branduolinei teisei ir branduolinės energetikos objektų reguliavimui, siekiant informuoti sprendimus priimančias institucijas ir visuomenę apie pagrindinius iššūkius, kuriuos reikia įveikti siekiant, kad branduolinė energetika kiek įmanoma veiksmingiau prisidėtų įgyvendinant aplinkosauginius tikslus, o aplinka būtų tinkamai apsaugota nuo taikiais tikslais vystomos branduolinės veiklos keliamos tarpvalstybinės žalos rizikos (analizės metu vyrauja ekocentrinis, o ne antropocentrinis požiūris). Analizės objektu pasirinkti tie aplinkos teisės principai, kurie numato gaires tarptautinėms branduolinės teisės normoms plėtotis, nustato gamtos apsaugos režimą (saugiklius) bei tarptautinę atsakomybę, atsirandančią dėl branduolinės energetikos objektų sukelto žalingo poveikio aplinkai (t.y. bendradarbiavimo, darnaus vystymosi, prevencijos, atsargumo, teršėjas moka ir informavimo principai). Nurodžius tarptautinės aplinkos teisės ir branduolinės teisės sąlyčio taškus, toliau nagrinėjamos problemos dėl aplinkos teisės principų raidos ir perspektyvų branduolinės energetikos objektų reglamentavimo srityje, pateikiama susijusi nacionalinių ir tarptautinių ginčų sprendimo institucijų dėl branduolinės energetikos objektų praktika, atsakoma į klausimą, kuris iš minėtų aplinkos teisės principų veikimo modelių – tiesioginis ar netiesioginis – yra veiksmingesnis siekiant įgyvendinti užsibrėžtus... [toliau žr. visą tekstą]
1114

Achieving Next Generation Environmental Impact Assessment Follow-up and Monitoring

Andronak, Brett 17 April 2017 (has links)
Despite growing scrutiny of Environmental Impact Assessment (EIA) in Canada and worldwide, the follow-up and monitoring component remains under practiced, leaving EIA decision-makers and practitioners with little understanding of the accuracy of impact predictions made and the effectiveness of mitigation measures developed during the EIA project-planning phase. The Minister’s Expert Panel further highlighted the importance of enhancing follow-up and monitoring during the recent review of EIA processes in Canada. The research identifies six leading edge practices for next generation EIA follow-up and monitoring: public and Indigenous participation, continuous learning, clear roles and responsibilities, independent oversight, adaptive management and traditional knowledge. Approaches to implement those practices in a Canadian context are explored and supported by guidance that captures the learning potential of EIA follow-up and monitoring. The six practices are intended as a package and are presented with practical guidance for proponents, regulators, consultants and others involved in EIA. / May 2017
1115

Influence de la phase d’usage dans les enjeux de la rénovation de bâtiments résidentiels écologiques : vers une approche diachronique

Patenaude, Mario 11 1900 (has links)
En Amérique du Nord, les pratiques actuelles de conception de l’industrie de la construction suscitent de nombreux et importants problèmes, tant au niveau environnemental, que social et économique. Certaines tendances conceptuelles, telles que l’industrialisation de la construction, le bâtiment vert, l’approche diachronique et la rationalisation spatiale proposent des moyens afin de répondre à cette problématique. La conception synchronique, qui ne se base encore que sur des besoins immédiats, produit des bâtiments statiques qui ne peuvent accommoder l’évolution des besoins. En plus de la phase d’usage qui se révèle la plus coûteuse en termes de consommation d’énergie, d’eau, de matériaux et de génération de déchets, le bâtiment statique est amené à subir de nombreuses rénovations, profondément délétères pour l’environnement et la situation économique des ménages. Dans une perspective d’opérationnalisation du développement durable, la problématique de recherche concerne la considération de la phase d’usage dans le processus conceptuel de l’habitation. Dans l’optique de favoriser une conception plutôt diachronique, 55 projets de rénovation résidentiels ont été analysés et comparés afin de décrire la nature et l’intensité des interventions effectuées. L’examen des plans avant/après rénovation a permis de quantifier le niveau d’intensité des interventions et ainsi, mettre en relief certaines tendances et récurrences des pratiques actuelles. Dans le but de valider si le bâtiment vert est en mesure de répondre aux enjeux environnementaux contemporains de l’habitation, les contenus de trois programmes de certification utilisés en Amérique du Nord, à savoir BOMA-BESt®, LEED®, et Living Building ChallengeTM, sont analysés. Une classification des stratégies proposées montre la répartition des préoccupations envers le bâtiment, les systèmes et l’usager. Une analyse permet de mettre en relief que les considérations semblent, de façon générale, cohérentes avec les impacts associés à l’habitation. Un examen plus ciblé sur la teneur et les objectifs des stratégies considérant l’usager permet l’émergence de deux ensembles thématiques : les cinq sources potentielles d’impacts (énergie, eau, matériaux, déchets et environnement intérieur), ainsi que les quatre thèmes reliés aux objectifs et aux finalités des stratégies (entretien et surveillance; sensibilisation et formation; modélisation et mesurage; comportement et habitude). La discussion a permis d’émettre des pistes d’écoconception pour permettre à l’habitation d’accommoder l’évolution des besoins des occupants, à savoir la « démontabilité », l’aptitude à l’évolution et l’accessibilité. Des recommandations, telles que la nécessité de mieux prendre en compte l’usager comme facteur d’influence des impacts occasionnés par la phase d’usage, sont ensuite proposées. D’autres suggestions appellent à une concrétisation de la performance en suscitant l’implication, l’engagement, la responsabilisation et l’autonomisation des occupants. Enfin, il semble que certaines modifications des programmes de certification et de la législation en vigueur pourraient favoriser l’émergence d’une vision nouvelle concernant la nécessaire réduction de la superficie habitable. Toutes ces opportunités d’amélioration ont le potentiel de mener ce secteur vers une démarche plus globale et systémique, tout en bonifiant de façon majeure les implications environnementales, économiques et sociales de l’habitation. / In North America, construction industry design practices are linked to varied and important environmental, economic, and social concerns. Conceptual trends, like the industrialization of construction, green building, the diachronic approach, and spatial rationalization have proposed to address these issues. Synchronic housing design, still based only on present-day needs, generates static buildings that cannot accommodate needs that evolve over time. Furthermore, during the use phase, which reveals itself as the most costly in terms of energy, water, materials consumption, and waste generation, static buildings may undergo various renovations that are profoundly deleterious, both to the environment and the household’s economic situation. From a perspective that seeks to operationalize sustainable development, the research problem concerns the consideration of the use phase in the housing design process. In order instead to foster diachronic design, fifty-five residential renovation projects were analyzed and compared in order to describe the nature and intensity of their interventions. A review of before/after renovation plans allowed quantification of intervention intensity and highlighted certain trends and recurrences among current practices. In order to determine if green building can respond to contemporary environmental issues in housing, a content analysis of strategies proposed by three certification programs used in North America—BOMA-BESt®, LEED®, and Living Building ChallengeTM—is conducted. Classification of these strategies reveals the distribution of concerns regarding building, systems, and user. An analysis shows, generally, that considerations seem consistent with the impacts associated with housing. An examination focused on the content and objectives of those design strategies which consider the user yields the emergence of two thematic clusters: five potential sources of impacts (energy, water, materials, waste, and indoor environment) and four themes linked to the design strategies’ objectives and purposes (maintenance and monitoring; awareness and training; modeling and metering; behaviour and habit). Discussion permitted the formulation of ecological design criteria, such as disassembly, updatability, and accessibility, to allow for housing that accommodates occupants’ changing needs. Recommendations are proposed, such as the need for better consideration of the user phase in order to make it more consistent with the impacts it generates. Other suggestions call for making building performance more concrete by encouraging the involvement, commitment, accountability, and empowerment of occupants. Finally, it seems that particular changes in certification programs and legislation could encourage the emergence of a new, much-needed vision for total floor area reduction. All these opportunities for improvement seek to lead the sector toward a more holistic approach and to improve significantly the environmental, economic, and social implications of housing.
1116

Posuzování vlivu na životní prostředí v judikatuře Evropského soudního dvora / Environmental impact assessment of projects in the case law of the Court of Justice of the European Union

Glatzová, Monika January 2013 (has links)
Environmental impact assessment of projects in the case law of the Court of Justice of the European Union Environmental impact assessment (EIA) is a horizontal tool of protection of the environment, based on principles of precaution and prevention and aimed at assessment of plans and programs, or projects. This thesis deals with assessment of projects only. At EU level, the legal basis for EIA of projects is provided for by the EIA Directive (Directive 2011/92/EU) which is expected to be amended in the near future. The thesis provides for an analysis of the EIA case law of the Court of Justice of the EU (CJEU), identifies the main problems encountered by the Member States when implementing the EIA Directive, identifies the key principles established by the CJEU for interpretation of the EIA directive, and in the light of the above it identifies the main issues in the transposition in the Czech law. 1
1117

Platby s ekologickým dopadem v rozpočtech obcí / Payments with environmental impact in the budgets of municipalities

Cahlík, Jakub January 2012 (has links)
This diploma thesis deals with the structure of local charges with environmental impact and evaluates their contribution into budgets of municipalities. The first part of the thesis analyses basic characteristic of this kind of payments, their mutual cohesion and their role in the budgets of municipalities. The summary of particular charges in relation to valid law, the height of them and their relation to ecological purposes is discussed in the analytical part of the thesis. The possibility of the replacement of local charges with uniform ecological rate and evaluation of currently system of charges from economical and inhabitants' point of view is analysed in conclusion.
1118

Impact matrix construction for determining siting options for electricity generation systems

26 August 2015 (has links)
M.Sc. / This report details the identification of potential sites suitable for both renewable and non-renewable electricity generating technologies in South Africa. Eskom through its Integrated Electricity Planning Process (IEP) determines future-planning scenarios based on demand and supply side options, while considering expected growth in demand for electricity. Site suitability can have a significant influence on the viability of options selected through IEP ...
1119

Sweden’s foreign aid in Afghanistan from an environmental perspective

Karlsson, Linnea January 2016 (has links)
Afghanistan has been in armed conflict for over 30 years. The many wars have severely affected the environment negatively. Sweden has between 2010-2015 been allocating 4,7 billion SEK in foreign aid to Afghanistan. This is a qualitative study with the purpose to critically analyse how this foreign aid has contributed to a sustainable environmental development in Afghanistan. To be able to answer this question a review of projects documents and Sida assessment was conducted. This was then supplemented by interviews with 14 people who in different ways had been working with these issues. In the analysis theories connecting to environment, poverty and conflict have been used. Sida is supporting two types of foreign aid in Afghanistan; humanitarian aid and development aid. The study found that the Sida’s humanitarian work in Afghanistan has a clear focus on environmental issues, whereas the development aid overall where lacking a focus on environmental issues. The larger focus within the humanitarian aid was explained by that environmental consideration is a part of the Sida’s strategy for the humanitarian aid in Afghanistan and humanitarian aid’s natural connection to environment, in for instance natural disasters. The lack of environmental focus within the development aid was found to have three explanations; the strategy did not have an environmental focus, the staff lacked the necessary environmental knowledge and environmental issues was not believed to be prioritized in Afghanistan. It was however believed to be possible to have more focus on the environment in Sida’s work in Afghanistan. The study shows that environmental issues are not believed to be a necessary component for creating a sustainable development or peace in Afghanistan. The study is arguing that one way to create more focus on environmental issues within the development aid would be to work closer with the humanitarian aid. The thesis was finally presenting an alternative way to look at environment and sustainable development; to focus on the environmental problems of the current generation and by doing so preserving the nature for the future generations.
1120

Consideration of space debris in the life cycle assessment framework / Considération des débris spatiaux dans le cadre de l’analyse de cycle de vie

Maury, Thibaut 05 April 2019 (has links)
L’analyse de cycle de vie environnementale (ACV), d’après l’ISO 14040/44, a été identifiée par l’agence spatiale Européenne, ArianeGroup et plusieurs acteurs de l’industrie spatiale européenne comme la méthodologie la mieux adaptée pour réaliser l’évaluation environnementale des missions spatiales. Cependant, le secteur spatial est un domaine d’activité dont la particularité est de s’étendre au-delà des limites de l’environnement terrestre. Ainsi, s’il est possible d’évaluer les impacts sur l’environnement classique via la méthodologie ACV, les impacts générés sur l’environnement orbital ne sont aujourd’hui pas considérés dans son cadre de référence.Par conséquent, il s’agit ici d’étendre le champ des études ACV dans le domaine du spatial afin de caractériser les étapes du cycle de vie ayant lieu en orbite, c’est-à-dire la phase d’usage pendant la mission spatiale et la phase de fin de vie (ou Post-Mission Disposal). L’anticipation de cette dernière est devenue une étape cruciale dans la conception des missions spatiales du fait des règlementations visant à limiter la prolifération des débris spatiaux. En effet, seulement 6% de la population en orbite autour de la Terre sont des satellites actifs, le reste étant considéré comme des débris, résultat des missions et activités spatiales passées. Etant donné cet enjeu de durabilité majeur pour l'industrie spatiale, les études environnementales se doivent de mettre en évidence les transferts de pollution potentiels non seulement entre les impacts environnementaux classiques tels que Changement Climatique ou la Toxicité mais aussi ceux relatifs à l’environnement orbital, au premier rang desquels figurent les débris spatiaux.Afin de caractériser cet impact sur l’environnement orbital, nous proposons de définir une nouvelle catégorie d’impact en ACV dénommée ‘Orbital Space Use’. La conformité avec le cadre de référence de l’ACV est assurée au travers de la construction de chaines de cause-à-effet (ou impact pathways) reliant les flux élémentaires du système d’étude aux mécanismes environnementaux (indicateur midpoint) et au dommage final (indicateur endpoint) au sein de l’Aire de Protection ‘Ressources Naturelles’. En effet, les orbites proches de la Terre qui supportent les activités spatiales sont considérées à ce titre comme une ressource pouvant être impactée par des ‘stresseurs’. Les débris spatiaux sont aujourd’hui identifiés comme les principaux ‘stresseurs’ vis-à-vis de l’accès et de la pleine utilisation de la ressource orbitale. Ainsi, le développement d’un modèle de caractérisation a été entrepris. Il permet d’évaluer l’impact potentiel d’une mission spatiale sur la population des débris déjà présente en orbite. Les facteurs de caractérisation obtenus sont appliqués à un cas d’étude comparant trois scénarios de fin de vie différents dans le but de prouver l’applicabilité du modèle. En outre, une première approche s’intéressant à la quantification des externalités économiques négatives engendrées par la prolifération des débris est développée. Elle constitue une étape préliminaire en vue d’un développement d’une catégorie de dommage dite ‘endpoint’. Enfin, les challenges méthodologiques restants et les potentiels développements complémentaires sont abordés. / Several actors of or related to the European space industry, such as ArianeGroup and the European Space Agency (ESA), have identified life cycle assessment (according to ISO14040/44) as the most appropriate methodology to measure and minimise their environmental impact. Nevertheless, space systems deal with a strong particularity which adds new aspects considering the scope of the LCA framework. Space missions are the only human activity that crosses all segments of the atmosphere and stays “out” of the natural environment and ecosystems. Regarding space systems with a holistic approach, environmental impacts could occur not only in the conventional ecosphere but also in the outer space (i.e. the orbital environment).Consequently, the current scope of LCA studies should be broadened to take into account the on-orbit lifetime as well as the end-of-life disposal of the spacecraft. Yet, it is becoming a crucial point of the space mission design due to the future increase of the orbital population composed in a major part by space debris. In this way, LCA studies of space missions could indicate trade-offs not only between typical impact categories (toxicity and climate change for example) but also with regard to impacts generated in the orbital environment with a particular focus on space debris related impacts.Hence, the priority has been given to the integration of a new impact category called orbital space use in the life cycle impact assessment framework. To address the environmental burdens comprehensively in this new category, impact pathways linking elementary flows to environmental mechanisms (midpoint) and damages (endpoint) are developed within the Area-of-Protection ‘Natural resources’. Space debris is identified as the main stressor of the orbital environment. Thus, ‘characterisation factors’ are defined and calculated at midpoint level to assess the potential impact of a space mission on the orbital environment. The methodology is applied to a case study to prove its applicability: the potential impact of a theoretical space mission is addressed through the comparison of three disposal scenarios. Also, a first attempt regarding the characterisation of the endpoint damage is provided taking into account the economic externalities caused by space debris. Finally, remaining methodological challenges and perspectives for future work are provided.

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