Planning and Design of Kemah Arch Dam in a Very Strong Seismic Region
© Springer Vieweg | Springer Fachmedien Wiesbaden GmbH (6/2016)
The Kemah arch dam is situated in Turkey close to the Eurasian Seismic Zone, where the peak ground acceleration of a 2 500-year earthquake reaches to a value of 0.70g. In this paper, the planning and design of the arch dam are reported besides presentation of main features of the project. Based on the results of geological and geotechnical investigation including the karstic foundation, shape of the arch dam was optimized using the time-history approach to cope with the extraordinary seismic loading, and the stresses in the arch dam and foundation were analysed in each time step. Based on the determined tensile and compressive stresses, the required concrete classes were accordingly defined.
© Springer Vieweg | Springer Fachmedien Wiesbaden GmbH (6/2016)
The Kemah arch dam is situated in Turkey close to the Eurasian Seismic Zone, where the peak ground acceleration of a 2 500-year earthquake reaches to a value of 0.70g. In this paper, the planning and design of the arch dam are reported besides presentation of main features of the project. Based on the results of geological and geotechnical investigation including the karstic foundation, shape of the arch dam was optimized using the time-history approach to cope with the extraordinary seismic loading, and the stresses in the arch dam and foundation were analysed in each time step. Based on the determined tensile and compressive stresses, the required concrete classes were accordingly defined.
PVC geomembranes in pumped storage schemes
© Springer Vieweg | Springer Fachmedien Wiesbaden GmbH (5/2013)
Construction of pumped storage schemes is increasing in many European countries and around the world to implement/backup the energy production from windmills. To ensure efficient and safe operation, the storage reservoirs must be watertight and maintain watertightness over time. Traditional waterproofing solutions like concrete and bituminous concrete linings need periodical and/or accidental maintenance that may have significant impact on operation of the scheme. A viable alternative, based on well-proven systems adopted for new construction and rehabilitation of dams and reservoirs, is to use impervious flexible geomembranes, generally Polyvinylchloride (PVC) composite membranes embedding a backing geotextile for anti-puncture protection, which can be installed on fairly uneven base layers, reducing surface preparation.
© Springer Vieweg | Springer Fachmedien Wiesbaden GmbH (5/2013)
Construction of pumped storage schemes is increasing in many European countries and around the world to implement/backup the energy production from windmills. To ensure efficient and safe operation, the storage reservoirs must be watertight and maintain watertightness over time. Traditional waterproofing solutions like concrete and bituminous concrete linings need periodical and/or accidental maintenance that may have significant impact on operation of the scheme. A viable alternative, based on well-proven systems adopted for new construction and rehabilitation of dams and reservoirs, is to use impervious flexible geomembranes, generally Polyvinylchloride (PVC) composite membranes embedding a backing geotextile for anti-puncture protection, which can be installed on fairly uneven base layers, reducing surface preparation.
Wind Farm Development in the Belgian Part of the North Sea: A Policy Odyssey without Precedent
© Lexxion Verlagsgesellschaft mbH (12/2012)
Belgium has a coastline of 65 km and a territorial sea and continental shelf of 3 600 km,2 thus making it the smallest maritime area in North-West Europe. The Belgian marine environment is intensively used by different actors, competing with each other for limited space. Activities include recreation and tourism, shipping, fisheries, dredging, military activities, laying of cables and pipelines and mineral extraction.
© Lexxion Verlagsgesellschaft mbH (12/2012)
Belgium has a coastline of 65 km and a territorial sea and continental shelf of 3 600 km,2 thus making it the smallest maritime area in North-West Europe. The Belgian marine environment is intensively used by different actors, competing with each other for limited space. Activities include recreation and tourism, shipping, fisheries, dredging, military activities, laying of cables and pipelines and mineral extraction.
An Architecture for Referencing Hydrologic Concepts in Distributed Systems
© DIV Deutscher Industrieverlag GmbH (9/2012)
Water resource management involves multi-disciplinary and often cross-jurisdictional information exchange. Hence, interoperability of the information and communication (ICT) systems involved is a key requirement. Syntactic interoperability can be achieved by agreeing on communication protocols and information model standards such as those defined by the Open Geospatial Consortium (OGC), particularly those within the Sensor Web Enablement (SWE) framework. However, agreement on syntactic level is not sufficient. There is also a need to aim at interoperability on a semantic level, where data may be exchanged and integrated based on agreed upon meanings of specified concepts. In order to effectively exchange hydrologic information, a range of references must be commonly understood by data provider and receiver. Hydrologic concepts commonly referenced are varied, from natural features, management units, monitoring locations, physical properties, sensor types, measurement procedures and instruments and ancillary metadata.
© DIV Deutscher Industrieverlag GmbH (9/2012)
Water resource management involves multi-disciplinary and often cross-jurisdictional information exchange. Hence, interoperability of the information and communication (ICT) systems involved is a key requirement. Syntactic interoperability can be achieved by agreeing on communication protocols and information model standards such as those defined by the Open Geospatial Consortium (OGC), particularly those within the Sensor Web Enablement (SWE) framework. However, agreement on syntactic level is not sufficient. There is also a need to aim at interoperability on a semantic level, where data may be exchanged and integrated based on agreed upon meanings of specified concepts. In order to effectively exchange hydrologic information, a range of references must be commonly understood by data provider and receiver. Hydrologic concepts commonly referenced are varied, from natural features, management units, monitoring locations, physical properties, sensor types, measurement procedures and instruments and ancillary metadata.
WHYMAP â The New Global Map of River and Groundwater Basins
© DIV Deutscher Industrieverlag GmbH (9/2012)
A new map of âRiver and Groundwater Basins of the Worldâ has been prepared to help water resource policy makers and planners visualise, at the broad scale and in general terms, the potential interaction between surface water systems and the underlying groundwater resources for their conjunctive uses. It aims to promote the fact that groundwater has to play an equal part in the management of water resources, since aquifers are a major source for drinking water-supply, agricultural irrigation and industrial production, and are vital for sustaining the natural environment.
© DIV Deutscher Industrieverlag GmbH (9/2012)
A new map of âRiver and Groundwater Basins of the Worldâ has been prepared to help water resource policy makers and planners visualise, at the broad scale and in general terms, the potential interaction between surface water systems and the underlying groundwater resources for their conjunctive uses. It aims to promote the fact that groundwater has to play an equal part in the management of water resources, since aquifers are a major source for drinking water-supply, agricultural irrigation and industrial production, and are vital for sustaining the natural environment.
Urban Vulnerability in Lowland Areas
© DIV Deutscher Industrieverlag GmbH (9/2012)
BelĂ©m is the capital of the Brazilian Federal State ParĂĄ. It is located in the Amazonas river delta estuary at the mouth of GuamĂĄ River close to the GuajarĂĄ Bay. Geomorphologically, it is an alluvial plain less than four meters above sea level, suffering the effects of tides and creating difficulties to the urban drainage. Traditionally the occupation process took place in low areas close to the river and therefore highly vulnerable to floods, so called âribeirinhaâ, the typical small village structure close to rivers in the Amazonas region. This work is aimed to analyze the urban structure of BelĂ©m in order to propose flood control and mitigation strategies.
© DIV Deutscher Industrieverlag GmbH (9/2012)
BelĂ©m is the capital of the Brazilian Federal State ParĂĄ. It is located in the Amazonas river delta estuary at the mouth of GuamĂĄ River close to the GuajarĂĄ Bay. Geomorphologically, it is an alluvial plain less than four meters above sea level, suffering the effects of tides and creating difficulties to the urban drainage. Traditionally the occupation process took place in low areas close to the river and therefore highly vulnerable to floods, so called âribeirinhaâ, the typical small village structure close to rivers in the Amazonas region. This work is aimed to analyze the urban structure of BelĂ©m in order to propose flood control and mitigation strategies.
Overview of Material and Energy Flows in German Wastewater Infrastructures
© DIV Deutscher Industrieverlag GmbH (9/2012)
Today, Germany is moving to more sustainable energy systems. This challenges also the wastewater sector to improve energy balances of infrastructures. Besides energy efficiency, also reuse of resources from wastewater offers large energy potentials. While Germany represents a best practice example for wastewater management within the technical paradigm, there are large opportunities for energetic reuse of wastewater resources, which are not yet fully exploited. The purpose of this paper is to give an overview of material and energy flows in wastewater infrastructures in Germany today, and to present two eco-innovations for improved energy balances. Making full use of synergies between energy and (waste)water infrastructures is an important feature of sustainable cities of tomorrow.
© DIV Deutscher Industrieverlag GmbH (9/2012)
Today, Germany is moving to more sustainable energy systems. This challenges also the wastewater sector to improve energy balances of infrastructures. Besides energy efficiency, also reuse of resources from wastewater offers large energy potentials. While Germany represents a best practice example for wastewater management within the technical paradigm, there are large opportunities for energetic reuse of wastewater resources, which are not yet fully exploited. The purpose of this paper is to give an overview of material and energy flows in wastewater infrastructures in Germany today, and to present two eco-innovations for improved energy balances. Making full use of synergies between energy and (waste)water infrastructures is an important feature of sustainable cities of tomorrow.
Bathing Waters in Cities â The Vision of Joining Social Wants of Today with
Ecological Needs of Tomorrow
© DIV Deutscher Industrieverlag GmbH (9/2012)
Water is a fundamental and renewable resource that cannot get lost due to the natural water cycle. Despite this, it is a scarce resource in some regions and in many cases water is polluted more and faster than it can purify itself. The following paper plays with a scenario about water in urban areas to achieve a win-win situation for the environment as well as for anthropogenic demands. This idea is assessed by means of the Integrative Sustainability Concept of the German Helmholtz Association (ISCGH). The case of Santiago de Chile serves as an imagination of the nexus between todayâs social wants and ecological needs of tomorrow under the framework conditions of a threshold country.
© DIV Deutscher Industrieverlag GmbH (9/2012)
Water is a fundamental and renewable resource that cannot get lost due to the natural water cycle. Despite this, it is a scarce resource in some regions and in many cases water is polluted more and faster than it can purify itself. The following paper plays with a scenario about water in urban areas to achieve a win-win situation for the environment as well as for anthropogenic demands. This idea is assessed by means of the Integrative Sustainability Concept of the German Helmholtz Association (ISCGH). The case of Santiago de Chile serves as an imagination of the nexus between todayâs social wants and ecological needs of tomorrow under the framework conditions of a threshold country.
Photodegradation of Nonylphenol in Water under Both Natural and Simulated Sunlight
© PSP - Parlar Scientific Publications (12/2010)
The photodegradation of nonylphenol (NP) was investigated in ultra-pure water under natural and simulated sunlight separately, and both of them followed pseudofirst- order kinetics. The rate constants and half-lives were 2.25Ă10â2 hâ1 and 30.8 h under solar irradiation, and 1.68Ă10â2 hâ1 and 41.3 h under simulated sunlight, respectively.
© PSP - Parlar Scientific Publications (12/2010)
The photodegradation of nonylphenol (NP) was investigated in ultra-pure water under natural and simulated sunlight separately, and both of them followed pseudofirst- order kinetics. The rate constants and half-lives were 2.25Ă10â2 hâ1 and 30.8 h under solar irradiation, and 1.68Ă10â2 hâ1 and 41.3 h under simulated sunlight, respectively.
Petroleum Coke Fly Ash Use for Heavy Metals Removal from Acid Wastewaters
© Lehrstuhl fĂŒr Abfallverwertungstechnik und Abfallwirtschaft der MontanuniversitĂ€t Leoben (11/2010)
This work is focused on the characterizationof a Chilean petroleum coke fly ash (PCFA) from circulated fluidized bed combustion (CFCB), and its potential use in Cu2+ and Pb2+ removal from acid wastewaters (pH 4). CFBC-PCFA presents a high Ca and SO3 content, being anhydrite the major crystalline mineral phase. Regarding to their environmental characterization, despite of its high Ni and V content, leaching tests allowed concluding that CFBC-PCFA is a non-hazardous residue. Heavy metals removal tests indicate that CFBC-PCFA is able to remove Cu2+ and Pb2+ mainly due to a precipitation process, at high liquid to solid ratios. According to these results, CFBC-PCFA may be used to remove heavy metals and neutralize acid wastewaters, suggesting a possible replacement of pure and costly alkaline materials.
© Lehrstuhl fĂŒr Abfallverwertungstechnik und Abfallwirtschaft der MontanuniversitĂ€t Leoben (11/2010)
This work is focused on the characterizationof a Chilean petroleum coke fly ash (PCFA) from circulated fluidized bed combustion (CFCB), and its potential use in Cu2+ and Pb2+ removal from acid wastewaters (pH 4). CFBC-PCFA presents a high Ca and SO3 content, being anhydrite the major crystalline mineral phase. Regarding to their environmental characterization, despite of its high Ni and V content, leaching tests allowed concluding that CFBC-PCFA is a non-hazardous residue. Heavy metals removal tests indicate that CFBC-PCFA is able to remove Cu2+ and Pb2+ mainly due to a precipitation process, at high liquid to solid ratios. According to these results, CFBC-PCFA may be used to remove heavy metals and neutralize acid wastewaters, suggesting a possible replacement of pure and costly alkaline materials.
