用水质指数评价印度拉姆萨尔湿地sastamkotta淡水湿地水质

Q4 Environmental Science
K. Shibu, S. Ayoob
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引用次数: 0

摘要

湖泊是多功能的生态系统,具有回收营养、减少洪水、补给地下水等宝贵功能,也满足了人类的用水需求。目前,由于过度取水和各种人为活动,地表水的质量正在迅速恶化。在本研究中,根据中央污染控制委员会国家卫生基金会水质指数确定了印度西南部淡水湿地、也是拉姆萨尔特湖的水质状况。该研究于2018年10月至2019年9月进行,分析了溶解氧、粪便大肠菌群、pH值和生化需氧量等参数,以确定湖泊的水质状况,并使用地理信息系统绘制了水质状况图。研究发现,该湖的主要部分属于良好类别(中央污染控制委员会国家卫生基金会水质指数[CPCB-NSFWQI]范围为78至80)。在Bharanikkavu和Anjalimooduan采样站观察到局部中等良好的水质(CPCB-NSFWQI,范围从76到78),在季风后和季风前季节,在喀拉拉邦水务局主泵站采样站发现非常良好的水质。研究还发现,在季风季节,湖泊东北部的主要部分水质处于中等良好状态。湖泊集水区人口稠密,湖泊的物理环境以三面陡坡为特征,降雨期间径流过多,这可归因于湖泊水质适中。在整个研究期间,所有采样站的水质参数,即粪便大肠菌群超过了印度标准局规定的饮用水允许限值。Sathamkotta湖的指定最佳用途属于A类(非污染源)类别(根据中央污染控制委员会根据研究期间获得的CPCB-NSFWQI值给出的各种类别)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
WATER QUALITY INDEX AS A TOOL TO ASSESS WATER QUALITY OF SASTHAMKOTTA FRESHWATER WETLAND, A RAMSAR SITE IN INDIA
Lakes are versatile ecosystems thatperform valuable functions such as recycling nutrients,attenuating floods, recharging groundwater and also serve the water needs of the human populace.Nowadaysthe quality of surface water is getting deteriorating at a rapid pace due to excess waterwithdrawal and various anthropogenic activities. In this study, the water quality status ofSasthamkotta lake, a fresh water wetland in the south western part of India which is also a Ramsarsite is determined in terms of Central Pollution Control Board National Sanitation FoundationWater Quality Index. The study was carried out from the month of October 2018 to the month ofSeptember 2019 and parameters namely dissolved oxygen, faecal coliform, pH and biochemicaloxygen demand were analysed to determine the water quality status of the lake and the same wasmapped using Geographical Information System. It was found that major part of the lake comesunder the category good (Central Pollution Control Board National Sanitation Foundation WaterQuality index [CPCB-NSFWQI] ranging from 78 to 80). Localised moderately good water quality(CPCB-NSFWQI ranging from 76 to 78) was observed at sampling stations namely Bharanikkavuand Anjalimooduand very good water quality(CPCB-NSFWQI ranging from 80 to 82) was foundat the sampling stationnamely Kerala Water Authority main pumping station during the postmonsoonand the pre-monsoon season respectively. It was also found that the major portion of thenorth eastern part of lake comes under moderately good water quality during the monsoon season.Densely populated catchment area of the lake, physical setting of the lake characterised by steepslopes on three sides and excess runoff during rainfall could be attributed to the moderately goodwater quality of the lake. Water quality parameters namely faecal coliform exceeded thepermissible limits as per the Bureau of Indian Standards for drinking purpose at all the samplingstations throughout the study period. The designated best use of Sathamkotta lake belongs to thecategory ClassA (non-polluted source) (as per the various classes given by the Central PollutionControl Board based on the CPCB-NSFWQI values obtained during the study period.
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来源期刊
Pollution Research
Pollution Research Environmental Science-Water Science and Technology
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期刊介绍: POLLUTION RESEARCH is one of the leading enviromental journals in world and is widely subscribed in India and abroad by Institutions and Individuals in Industry, Research and Govt. Departments.
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