Assessing water quality management options in the Upper Litani Basin, Lebanon, using an integrated GIS-based decision support system
Assessing water quality management options in the Upper Litani Basin, Lebanon, using an integrated GIS-based decision support system
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DOI：
10.1016/j.envsoft.2008.03.006
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发表时间：
2008-10-01
影响因子：
4.9
通讯作者：
Saadeh, Mark
中科院分区：
文献类型：
--
作者：
Assaf, Hamed;Saadeh, Mark
在黎巴嫩，未经处理的废水广泛而无情地排入上利塔尼河流域（ULB）河流系统，其排放量已达到惊人的水平，使其水不适合大多数用途，特别是在一年中干旱的时候。尽管政府和非政府机构呼吁建立若干废水处理厂和污水网络，以努力控制这一问题，这些努力似乎没有得到协调，也没有建立在对该流域当前和预测条件的全面综合评估的基础上。本文概述了综合决策支持系统（DSS）的开发和实施旨在帮助政策制定者和其他利益相关者更清楚地了解污水导致的地表水水质退化的关键因素和过程，并制定，评估和评估替代管理计划。该决策支持系统基于WEAP模型，提供了一个基于GIS的可视化仿真环境和情景管理与分析功能。决策支持系统被用来评估两个主要的水质管理计划，同时考虑到水文，空间和季节变化。进行了增量成本效益分析，以确定最佳购买计划。调查结果证实了这一问题的严重性，并表明必须立即采取行动，遏制对这一宝贵而稀缺的淡水资源的冲击。(c)2008爱思唯尔有限公司保留所有权利。
The widespread and relentless discharge of untreated wastewater into the Upper Litani Basin (ULB) river system in Lebanon has reached staggering levels rendering its water unfit for most uses especially during the drier times of the year. Despite the call by governmental and non-governmental agencies to develop several wastewater treatment plants and sewage networks in an effort to control this problem, these efforts do not seem to be coordinated or based on comprehensive and integrated assessments of current and projected conditions in the basin.This paper provides an overview of the development and implementation of an integrated decision support system (DSS) designed to help policy makers and other stakeholders have a clearer understanding of the key factors and processes involved in the sewage induced degradation of surface water quality in the ULB, and formulate, assess and evaluate alternative management plans. The DSS is developed based on the WEAP model, which provides a GIS based and visual simulation environment and scenario management and analysis capabilities. The DSS was used to assess two main water quality management plans taking into consideration hydrological, spatial and seasonal variabilities. An incremental cost-effectiveness analysis was conducted to identify best buy plans. The results have confirmed the gravity of this problem and demonstrated the importance of taking immediate action on curbing this onslaught on this valuable and scarce fresh water resource. (c) 2008 Elsevier Ltd. All rights reserved.