نتایج جستجو برای: شاخص wqi

تعداد نتایج: 74972  

Journal: :Water 2022

Water quality indices (WQIs) are used for the simple assessment and classification of water surface sources. However, considerable time, financial resources, effort required to measure parameters their calculation. Prediction WQIs through supervised machine learning is a useful approach reduce cost analysis development predictive models with reduced number parameters. In this study, regression ...

Journal: :Water 2023

Given the complexity of water quality data sets, resources pose a significant problem for global public order in terms protection and management. In this study, surface drinking irrigation purposes was evaluated by calculating Water Quality Index (WQI) Irrigation (IWQI) based on nine hydrochemical parameters. The discriminant analysis (DA) method used to identify variables that are most respons...

Journal: :Egyptian Journal of Chemistry 2021

This study was carried out on Rosetta branch water and 3 drains (El-Rahawy, El-Soble El-Gezira) that discharging wastewater into it, to assess the Water Quality Index (WQI) of their waters. investigation performed during period starting from winter 2017 summer 2018. The mean annual averages WQI values were good poor for irrigation (up 55) very aquatic life 97) at stations exposed discharged bra...

Journal: :Journal of Ecological Engineering 2022

Journal: :Oriental journal of chemistry 2022

The current study was conducted to assess the water quality of Valley Duhok as a source for drinking livestock and poultry in region. Seventy-two samples were collected from six sites valley conduct physicochemical biological tests, sub-index model (WQI) applied quality.The results index indicated that Dam Lake (site N1) good poultry, while rest on category very poor animals, with WQI values ra...

Alireza Rahmani, Mohammad Hossien Saghi, Mohammad Taghi Samadi, Shahram Sadeghi,

Background: Survey of pollution and evaluation of water quality in rivers with Oregon Water Quality Index (OWQI) and GIS are effective tools for management of the impact of environmental water resources. The information in calculating the WQI of Moradbeik river allowed us to take our tests results and make a scientific conclusion about the quality of water. GIS can be a powerful tool for develo...

Journal: :Procedia Computer Science 2022

The practice of river quality classification usually uses Water Quality Index (WQI) to evaluate the WQI values river. However, due huge data collection on pollution with uncertain water parameter values, need a different approach classify quality. One supervised algorithms known as K-Nearest Neighbors (KNN) seems give new for where each points are classified according k number or closest neighb...

Journal: :Sustainability 2023

Groundwater is regarded as the primary source of agricultural and drinking water in semi-arid arid regions. However, toxic substances released from sources such landfills, industries, insecticides, fertilizers previous year exhibited extreme levels groundwater contamination. As a result, it crucial to assess quality for activities, both its current use potential become reliable supply individua...

Journal: :Applied Water Science 2021

Abstract Groundwater is an important source for drinking water supply in hard rock terrain of Bundelkhand massif particularly District Mahoba, Uttar Pradesh, India. An attempt has been made this work to understand the suitability groundwater human consumption. The parameters like pH, electrical conductivity, total dissolved solids, alkalinity , hardness, calcium, magnesium, sodium, potassium, b...

ژورنال: :سلامت و محیط زیست 0
امیر حسین جاوید amir hossein javid phd, associate professor, faculty of environment and energy, tehran science and research branch, islamic azad university, tehran, iranدکتری مهندسی محیط زیست، دانشیار دانشکده محیط زیست و انرژی ، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران سید احمد میرباقری seyed ahmad mirbagheri phd, professor, faculty of civil and environmental engineering, k.n. toosi university of technology, tehran, iranدکتری مهندسی عمران، استاد دانشکده عمران و محیط زیست ، دانشگاه صنعتی خواجه نصیرالدین طوسی تهران آرزو کریمیان arezoo karimian phd candidate, faculty of environment and energy, tehran science and research branch, islamic azad university, tehran, iranدانشجوی دکتری مهندسی محیط زیست،دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران

زمینه و هدف: سد دز بر روی رودخانه دز در استان خوزستان قرار دارد. در مطالعه میدانی پارامترهای هدایت الکتریکی (ec)، نیترات(no3)، آمونیوم (nh4)، فسفات (po4)، کدورت (turbidity)، کل جامدات(ts)، قلیاییت(alkalinity)، کلیفرم(coli)، دما، اکسیژن محلول(do)، اکسیژن مورد نیاز بیوشیمیایی(bod5)، کلروفیل آ  (colloropill) و دیسک سچی(secchi disk) در پنج ایستگاه در عمق های 0، 2/5، 5 ، 10، 25 و 50 برای سال آبی 90-...

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