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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Comparison between LTTD and RO process of sea-water desalination: an integrated economic, environmental and ecological framework
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Comparison between LTTD and RO process of sea-water desalination: an integrated economic, environmental and ecological framework

机译：海水淡化LTTD和RO工艺的比较：经济，环境和生态综合框架

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摘要

Sea-water desalination has emerged as the key alternative to overcome demand-supply gap of potable water, worldwide. This paper aims to carry out a technology review of sea-water desalination, technologies in an integrated framework of economic, environmental and ecological analyses. The economic analysis here refers to a project/technology development effort analysis in the context of national economy. The cost per unit output from this perspective is the economic cost. In an environmental analysis, the higher specific energy consumption in a process vis-a-vis the best technology option in the project area is measured in terms of certified emission reduction. In ecosystem analysis, the accent is to find out whether the technology disrupts the existing eco-system. Such a disturbance entails a huge ecological cost. The cost quantified per unit output is arrived at as the reduction in GDP in the project affected area due to the direct and indirect effects of adverse ecological effects; these effects are deduced using specifically developed I-O tables 'with and without' technology options, for the project area. The choice of technology is the one with the minimum composite cost per unit output. The composite cost in the context is the sum of economic cost, the environmental cost and the ecological cost per unit output. The framework is applied in the technology review of low-temperature thermal desalination process and its impact on project areas of Lakshadweep islands and Thoothukodi district vis-a-vis the alternative RO process of sea-water desalination technology.
机译：海水淡化已成为克服全球饮用水供需缺口的主要替代方法。本文旨在对经济，环境和生态分析的综合框架中的海水淡化技术进行技术审查。这里的经济分析是指在国民经济背景下进行的项目/技术开发工作量分析。从这个角度来看，每单位产出的成本就是经济成本。在环境分析中，相对于项目区域的最佳技术选择，过程中较高的单位能耗是根据经过认证的减排量来衡量的。在生态系统分析中，重点在于确定技术是否会破坏现有的生态系统。这种干扰带来巨大的生态代价。由于不利的生态影响的直接和间接影响，单位产出的量化成本是项目受影响地区国内生产总值的减少;这些效果是使用专门开发的I-O表（带有和不带有）技术选项推论得出的。选择的技术是每单位产出的复合成本最低的技术。这里的综合成本是经济成本，环境成本和每单位产出的生态成本之和。相对于海水淡化技术的替代性反渗透工艺，该框架适用于低温热淡化工艺的技术审查及其对Lakshadweep群岛和Thoothukodi区项目区的影响。

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