نتایج جستجو برای: شاخص wqi
تعداد نتایج: 74972 فیلتر نتایج به سال:
The present work aims to assess the water quality index (WQI) of Manyad Storage tank, Aurangabad district, Maharashtra, India. surface sample were assessed for physico-chemical parameters namely pH, Electrical Conductivity, Total Dissolved Solid, Hardness, Bicarbonate, Chlorides, Sulphates, Nitrates, Calcium, Magnesium, Sodium, Potassium and Fluoride in post-monsoon season 2020. For calculating...
Various human activities have been the main causes of surface water pollution. The uneven distribution industrial enterprises in territories river basins Ukraine do not always allow real state quality to be assessed. This article has three purposes: (1) modification Ukrainian method for assessing WQI, taking into account level negative impact most dangerous chemical elements, (2) modeling WQI a...
Water quality indices (WQIs) are practical and versatile instruments for assessing, organizing, disseminating information about the overall status of surface water bodies. The use these may be beneficial in evaluating aquatic system quality. CCME (Canadian Council Ministers Environment) NSF (National Science Foundation) WQIs were used assessment (depth = 1 m) Lake Union, Washington State. These...
Economic expansion coupled with population growth and associated anthropogenic activities are a threat to water resources globally. This study assessed the dynamics in quality trophic status of one South Africa's hyper-eutrophic reservoirs, Hartbeespoort Dam. Spatio-temporal variability parameters was determined on historical data spanning period forty years (1980-2020), aim determining decadal...
there are several factors influencing the water quality based on its usage. the quality of drinking water is of the vital concern for human health and life. an essential attempt has to be done to develop a water quality index (wqi) corresponding with different conditions and characteristics of the relevant river or water body such as geographical, hydrological, discharge rate and pollution sou...
Aims of the Study: The physical, chemical and biological characteristics of Karaj River (near the city of Tehran, Iran), has been studied to evaluate the suitability of its water for domestic uses. Materials & Methods: Samples of water were collected from various localities before, in and after Karaj Dam Lake and were analyzed based on needs for Water Q...
بخش عظیمی از مناطق کشور با محدودیت منابع آب روبروست و استفاده نادرست از منابع محدود آب و ایجاد آلودگی در این منابع منجر به بروز بحران ها و فاجعه های زیست محیطی خواهد شد. روند رو به رشد توسعه کشور،گسترش مراکز صنعتی، استفاده بیش از حد از کود و سموم در کشاورزی، تخلیه پساب ها به منابع آبی پذیرنده، زه آب های کشاورزی و فاضلاب های بیمارستانی، خانگی و.کمیت و کیفیت منابع آبی محدود و ارزشمند کشور را به ش...
Enhancement of water quality index prediction using support vector machine with sensitivity analysis
For more than 25 years, the Department of Environment (DOE) Malaysia has implemented a water quality index (WQI) that uses six key parameters: dissolved oxygen (DO), biochemical demand (BOD), chemical (COD), pH, ammoniacal nitrogen (AN), and suspended solids (SS). Water analysis is an essential component resources management must be properly managed to prevent ecological damage from pollution e...
Water quality index (WQI) is a valuable arithmetic tool that depicts the overall status of water in single number to prioritize for management interventions. This study aims assess based on WQI provide insights into aquatic ecosystems Marshyangdi River basin, tributary Narayani River, originating from Himalaya. samples were collected twenty-one sampling locations covering four districts upstrea...
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