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首页> 外文期刊>Engineering Technology and Applied Science Research >Impact of Right Bank Outfall Drain-I (RBOD-I) / Main Nara Valley Drain (MNVD) on Manchar Lake, Sindh, Pakistan
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Impact of Right Bank Outfall Drain-I (RBOD-I) / Main Nara Valley Drain (MNVD) on Manchar Lake, Sindh, Pakistan

机译：右岸排污口-I（RBOD-I）/奈良河谷主要排污口（MNVD）对巴基斯坦信德省的曼沙尔湖的影响

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The lakes of Sindh are in poor environmental condition due to the massive disposal of effluents. This paper presents the impact of water quality in Manchar Lake due to climate change and anthropogenic intervention. The lake is one of the biggest natural lakes in Sindh, Pakistan. The lake has three major sources of water supply: Indus River, hill torrents from the Khirthar Mountain range and the Right Bank Outfall Drain (RBOD-I)/Main Nara Valley Drain (MNVD). The water supply of the lake from the first two sources has been reduced due to morphological and climate changes. Hence, there is only one, and polluted, water supply to the lake, the RBOD-I/MNVD. At the same time, the use of poisonous materials for fishing has further contaminated the lake’s water. The RBOD system is connected with RBOD-III, RBOD-I/MNVD, Indus Link and RBOD-II on the right side of Indus River for safe disposal of wastewater into the Arabian Sea, which is still not functioning. Hence, more than 4500 cusecs of wastewater from the catchment area of RBOD have directly been discharged into the lake causing severe impact on flora, fauna and the livelihood of locals. In order to analyze the lake water quality impact, the water quality index (WQI) model was used. The results indicate that the water quality of four samples was very poor, while the fifth sample was unsuitable for drinking. The results of statistical analysis of parameters such as TDS, EC, SO4, Cl, Na, and hardness are higher to their permissible limits. Consequently, lake water possesses a high potential risk to local consumers and aquatic ecology.
机译：由于大量处理废水，信德湖的环境条件恶劣。本文介绍了由于气候变化和人为干预对Manchar湖水质的影响。该湖是巴基斯坦信德省最大的天然湖泊之一。该湖有三个主要的水源：印度河，Khirthar山脉的山洪和右岸排污口（RBOD-I）/奈良河谷主排口（MNVD）。由于形态和气候变化，前两个来源的湖泊供水减少。因此，只有一个受污染的湖泊供水RBOD-I / MNVD。同时，使用有毒材料捕鱼还进一步污染了该湖的水。 RBOD系统与印度河右侧的RBOD-III，RBOD-I / MNVD，Indus Link和RBOD-II连接，用于安全地将废水排入阿拉伯海，而阿拉伯海仍无法正常工作。因此，来自RBOD集水区的4500多桶废水已直接排入湖中，对当地的动植物群和生计造成了严重影响。为了分析湖泊水质影响，使用了水质指数（WQI）模型。结果表明，四个样品的水质非常差，而第五个样品不适合饮用。对TDS，EC，SO4，Cl，Na和硬度等参数进行统计分析的结果高于其允许的极限。因此，湖水对当地消费者和水生生态具有很高的潜在风险。

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