The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Stephane Jedrzejak - One of the best experts on this subject based on the ideXlab platform.
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comparative life cycle assessment of water treatment Plants
Desalination, 2012Co-Authors: Alexandre Bonton, Christian Bouchard, Benoit Barbeau, Stephane JedrzejakAbstract:Abstract The production of drinking water from fresh surface water involves several processes, energy consumption and chemical dosing, all having global environmental impacts. These should be considered in the choice of water treatment processes. The objective of the present study was to conduct a comparative life cycle assessment of two water treatment Plants: one enhanced Conventional Plant and one nanofiltration Plant. One existing nanofiltration Plant was chosen and investigated in great detail, including its operation and construction phases. This Plant is located in the northern part of the Province of Quebec and has been in operation for over 10 years. A virtual Conventional Plant was designed for comparative purposes. The comparative life cycle assessment was performed using SimaPro software for inventory and impact assessment phases. The study revealed very different impacts for the two Plants, drawing attention to the importance of the choice of water treatment chemicals and energy source.
E Ayesa - One of the best experts on this subject based on the ideXlab platform.
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quantitative assessment of energy and resource recovery in wastewater treatment Plants based on Plant wide simulations
Water Research, 2017Co-Authors: T Fernandezarevalo, I Lizarralde, F Fdzpolanco, S I Perezelvira, J M Garrido, Sebastia Puig, M Poch, P Grau, E AyesaAbstract:Abstract The growing development of technologies and processes for resource treatment and recovery is offering endless possibilities for creating new Plant-wide configurations or modifying existing ones. However, the configurations’ complexity, the interrelation between technologies and the influent characteristics turn decision-making into a complex or unobvious process. In this frame, the Plant-Wide Modelling (PWM) library presented in this paper allows a thorough, comprehensive and refined analysis of different Plant configurations that are basic aspects in decision-making from an energy and resource recovery perspective. In order to demonstrate the potential of the library and the need to run simulation analyses, this paper carries out a comparative analysis of WWTPs, from a techno-economic point of view. The selected layouts were (1) a Conventional WWTP based on a modified version of the Benchmark Simulation Model No. 2, (2) an upgraded or retrofitted WWTP, and (3) a new Wastewater Resource Recovery Facilities (WRRF) concept denominated as C/N/P decoupling WWTP. The study was based on a preliminary analysis of the organic matter and nutrient energy use and recovery options, a comprehensive mass and energy flux distribution analysis in each configuration in order to compare and identify areas for improvement, and a cost analysis of each Plant for different influent COD/TN/TP ratios. Analysing the Plants from a standpoint of resources and energy utilization, a low utilization of the energy content of the components could be observed in all configurations. In the Conventional Plant, the COD used to produce biogas was around 29%, the upgraded Plant was around 36%, and 34% in the C/N/P decoupling WWTP. With regard to the self-sufficiency of Plants, achieving self-sufficiency was not possible in the Conventional Plant, in the upgraded Plant it depended on the influent C/N ratio, and in the C/N/P decoupling WWTP layout self-sufficiency was feasible for almost all influents, especially at high COD concentrations. The Plant layouts proposed in this paper are just a sample of the possibilities offered by current technologies. Even so, the library presented here is generic and can be used to construct any other Plant layout, provided that a model is available.
Alexandre Bonton - One of the best experts on this subject based on the ideXlab platform.
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comparative life cycle assessment of water treatment Plants
Desalination, 2012Co-Authors: Alexandre Bonton, Christian Bouchard, Benoit Barbeau, Stephane JedrzejakAbstract:Abstract The production of drinking water from fresh surface water involves several processes, energy consumption and chemical dosing, all having global environmental impacts. These should be considered in the choice of water treatment processes. The objective of the present study was to conduct a comparative life cycle assessment of two water treatment Plants: one enhanced Conventional Plant and one nanofiltration Plant. One existing nanofiltration Plant was chosen and investigated in great detail, including its operation and construction phases. This Plant is located in the northern part of the Province of Quebec and has been in operation for over 10 years. A virtual Conventional Plant was designed for comparative purposes. The comparative life cycle assessment was performed using SimaPro software for inventory and impact assessment phases. The study revealed very different impacts for the two Plants, drawing attention to the importance of the choice of water treatment chemicals and energy source.
Yousef N Dabwan - One of the best experts on this subject based on the ideXlab platform.
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optimal integration of linear fresnel reflector with gas turbine cogeneration power Plant
Energy Conversion and Management, 2017Co-Authors: Yousef N Dabwan, Esmail Mohamed Ali MokheimerAbstract:Abstract Solar energy is an abundant resource in many countries in the Sunbelt, especially in the middle east, countries, where recent expansion in the utilization of natural gas for electricity generation has created a significant base for introducing integrated solar‐natural gas power Plants (ISGPP) as an optimal solution for electricity generation in these countries. ISGPP reduces the need for thermal energy storage in traditional concentrated solar thermal Plants and results in dispatchable power on demand at lower cost than stand-alone concentrated thermal power and much cheaper than photovoltaic Plants. Moreover, integrating concentrated solar power (CSP) with Conventional fossil fuel based thermal power Plants is quite suitable for large-scale central electric power generation Plants and it can be implemented in the design of new installed Plants or during retrofitting of existing Plants. The main objective of the present work is to investigate the possible modifications of an existing gas turbine cogeneration Plant, which has a gas turbine of 150 MWe electricity generation capacity and produces steam at a rate of 81.4 at 394 °C and 45.88 bars for an industrial process, via integrating it with concentrated solar power system. In this regard, many simulations have been carried out using Thermoflow software to explore the thermo-economic performance of the gas turbine cogeneration Plant integrated with LFR concentrated solar power field. Different electricity generating capacities of the gas turbine and different areas of solar collectors have been examined. Thermoflow software simulation results have been used to identify the optimal configuration and sizing of the gas turbine and the solar field of the integrated solar gas turbine cogeneration Plant (ISGCPP) required to achieve the required steam generation with the minimum cost and environmental impact. The study revealed that ISGCPP can reduce the levelized electricity cost by 76–85% relative to the fully-solar-powered LFR power Plant. Moreover, the study identified the configuration of ISGCPP with a gas turbine size of 50 MWe capacity and 93 ha of LFR solar field as the optimally integrated Plant. It reduces the annual CO 2 emission by 100 k Tonne (18%) in comparison with that emitted by the corresponding Conventional Plant with 50 MWe and 400 k tonne (43.75%) compared with that emitted by the original Conventional Plant with a gas turbine if 150 MWe power generation capacity. The study revealed also that integrating the LFR technology with a gas turbine cogeneration power Plant in locations with high solar insolation was proved to have more economic feasibility than CO 2 capturing technology. Under Dhahran weather conditions, the LEC of about 5 USȻ/kW h is obtained using the proposed optimally configured ISGCPP compared with about 7.5 USȻ/kW h obtained by the corresponding Conventional cycle integrated with carbon capture technology. In other words, the ISGCPP reduces the LEC by 50% while achieving the same reduction of CO 2 emission by an equivalent Conventional Plant integrated with carbon capture technology.
T Fernandezarevalo - One of the best experts on this subject based on the ideXlab platform.
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quantitative assessment of energy and resource recovery in wastewater treatment Plants based on Plant wide simulations
Water Research, 2017Co-Authors: T Fernandezarevalo, I Lizarralde, F Fdzpolanco, S I Perezelvira, J M Garrido, Sebastia Puig, M Poch, P Grau, E AyesaAbstract:Abstract The growing development of technologies and processes for resource treatment and recovery is offering endless possibilities for creating new Plant-wide configurations or modifying existing ones. However, the configurations’ complexity, the interrelation between technologies and the influent characteristics turn decision-making into a complex or unobvious process. In this frame, the Plant-Wide Modelling (PWM) library presented in this paper allows a thorough, comprehensive and refined analysis of different Plant configurations that are basic aspects in decision-making from an energy and resource recovery perspective. In order to demonstrate the potential of the library and the need to run simulation analyses, this paper carries out a comparative analysis of WWTPs, from a techno-economic point of view. The selected layouts were (1) a Conventional WWTP based on a modified version of the Benchmark Simulation Model No. 2, (2) an upgraded or retrofitted WWTP, and (3) a new Wastewater Resource Recovery Facilities (WRRF) concept denominated as C/N/P decoupling WWTP. The study was based on a preliminary analysis of the organic matter and nutrient energy use and recovery options, a comprehensive mass and energy flux distribution analysis in each configuration in order to compare and identify areas for improvement, and a cost analysis of each Plant for different influent COD/TN/TP ratios. Analysing the Plants from a standpoint of resources and energy utilization, a low utilization of the energy content of the components could be observed in all configurations. In the Conventional Plant, the COD used to produce biogas was around 29%, the upgraded Plant was around 36%, and 34% in the C/N/P decoupling WWTP. With regard to the self-sufficiency of Plants, achieving self-sufficiency was not possible in the Conventional Plant, in the upgraded Plant it depended on the influent C/N ratio, and in the C/N/P decoupling WWTP layout self-sufficiency was feasible for almost all influents, especially at high COD concentrations. The Plant layouts proposed in this paper are just a sample of the possibilities offered by current technologies. Even so, the library presented here is generic and can be used to construct any other Plant layout, provided that a model is available.