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1.
Synopsis The study deals with the entrapment of fishes in the intake of Karachi Nuclear Power Plant. A total of 62 species of marine
fishes belonging to 43 genera were observed entrapped in the seawater intake. Therapon puta, Liza waigiensis, Abudefduf septemfasciatus, and Lagoceptalus inermis were the most common. Mass mortalities of the juveniles of Sardinella sindensis were recorded in September and October of 1974, 1975, and 1977. Commercially important fishes such as sardines, mullets and
anchovies, were entrapped in the intake of the power plant in considerable numbers at various times of the year. The majority
of fishes removed from the screen washes of the power plants were killed by impingement. 相似文献
2.
Goal, Scope and Background The Flue Gas Desulphurization (FGD) system has been installed at the biggest lignite-fired power generation plant in Thailand
to reduce the large amount of SO2 emission. In order to understand the costs and benefits, both in ecological and economic terms, the lignite-fired plant was
studied both before and after the installation of the FGD system. The focus of this study is to consider not only the Life
Cycle Assessment (LCA) outcome but also the Life Cycle Costing (LCC) factors. The results can provide valuable information
when selecting appropriate technologies to minimize the negative impact that lignite-fired power plants have on the environment.
Methods The Life Cycle Assessment - Numerical Eco-load Total Standardization (LCA-NETS) system was used to evaluate the impact on
the environment of both the lignite-fired plant and the FGD system. Life Cycle Costing (LCC) was used to provide a comparison
between alternative before and after installation of FGD. LCC, a powerful analytical tool, examines the total cost, in net
present value terms, of a FGD system over its entire service lifetime.
Results and Discussion The results of the study are shown in the eco-load values over the entire life cycle of the lignite-fired plant. Comparative
models of the power plant, before and after the installation of the FGD system, are evaluated using the LCA-NETS system. The
results indicate that the installation of the FGD system can reduce the acidification problem associated with lignite-fired
plants by approximately 97%. The LCC estimation shows the major costs of the FGD system: capital investment, operating and
maintenance, and miscellaneous costs. The LCC provides the decision-making information when considering the cost of the FGD
system in terms of protecting the environment.
Conclusion and Outlook LCA is an important decision-making tool for environmental policies, especially with regard to the selection of pollution
control equipment for lignite-fired plants. Green coal technologies and strategies to reduce the negative impact on the environment
are essential to produce more environmentally-friendly power plants with a sustainable future. 相似文献