Bibliographies thématiques / NAJAFGARH DRAIN

Littérature scientifique sur le sujet « NAJAFGARH DRAIN »

Auteur : Grafiati
Publié le 11 septembre 2023

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Articles de revues sur le sujet "NAJAFGARH DRAIN"

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Singh, S. K., Priyanka Negi, Karan Arora et Monika. « Modelling of Pollutant Transport in Yamuna River from the Najafgarh Drain, NCT Delhi Using Matlab Software ». Journal of Climate Change 9, no 3 (1 septembre 2023) : 41–50. http://dx.doi.org/10.3233/jcc230023.

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When the river Yamuna leaves the National Capital Territory of Delhi, its situation further deteriorates. Despite accounting for only 1% of the river’s overall catchment area, this region is responsible for more than half of the pollutants discovered in the Yamuna. The river Yamuna, on the other hand, is Delhi’s only natural resource for maintaining all forms of life. The Yamuna River is currently experiencing a significant level of pollution problem, and in order to control pollution in the Yamuna River, continual analysis is essential. The Yamuna River is contaminated by the discharge of untreated municipal sewage and industrial effluent through seven major drains: Najafgarh, Yamunapur, Sen Nursing Home, Barathpula, Maharani Bagh, Kalkaji, and Tuglakabad. In terms of people and chemicals, continuous sampling takes time and money. The primary objective of this study is to analyse the wastewater samples collected by sub-drains and STP’s to predict the pollutant transportation in river Yamuna from Najafgarh Drain. The study focusses on the only pollutant, i.e., Biochemical Oxygen Demand from the starting point to after the confluence of Najafgarh Drain into river Yamuna. The prediction is to be done by using MATLAB software. This study would help to identify the main sources of sub-drains which are polluting Najafgarh Drain and eventually the river Yamuna. This shows how MATLAB may be used to calculate the pollution load caused by organic waste in the Yamuna River as it flows through Delhi, India’s National Capital Territory. The model numerically solves a series of differential equations to simulate the dissolved oxygen and biochemical oxygen demand parameters in two dimensions. MATLAB is an interactive programming language that may be used to develop algorithms, graphics, and user interfaces in other computer languages. MATLAB helps estimate future water quality using present data, which saves time, labour, and other costs associated with the continuous study. There are various software programmes available in the market for predicting river water quality, however, MATLAB GUI provides an accessible and convenient user interface (Graphical User Interface).
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Gola, Deepak, Arghya Bhattacharya, Priyadarshini Dey, Anushree Malik et Shaikh Ziauddin Ahammad. « Assessment of Drain Water Used for Irrigation in the Delhi Region ». Journal of Health and Pollution 10, no 26 (juin 2020) : 200610. http://dx.doi.org/10.5696/2156-9614-10.26.200610.

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Background. Industries such as electroplating, mining and battery production are major sources of heavy metal-rich waste entering nearby water bodies. Irrigation with heavy metal contaminated water can deteriorate soil quality as well as agricultural produce and have further toxic effects on human health. Objectives. The objective of the present study was to estimate the concentration of hazardous heavy metals such as chromium (Cr), cadmium (Cd), copper (Cu), nickel (Ni), zinc (Zn) and lead (Pb), as well as physico-chemical variables (pH, electrical conductivity, total dissolved solids, chemical oxygen demand and dissolved oxygen) at sampling locations along the Najafgarh and Loha mandi drains in Delhi, National Capital Region, India. Methods. The present study evaluated the quality of wastewater from the Najafgarh and Loha mandi drains, which are used for irrigational purposes in the Delhi region. Drain water quality was monitored for a period of 2 years for physico-chemical variables (pH, chemical oxygen demand, electrical conductivity and dissolved oxygen) as well as heavy metal concentrations (Cr, Cu, Cd, Zn, Ni and Pb). The two-year monitoring period (July 2012–March 2014) was chosen to represent three seasons: pre-monsoon, monsoon, and post-monsoon. Results. Varied concentrations of multiple heavy metals were found due to the extensive discharge of untreated industrial effluents into the drain water. Punjabi Bagh of Najafgarh drain was the most contaminated sampling site with the maximum concentration of Zn (12.040 ± 0.361 mg L−1), followed by Cr (2.436 ± 0.073mg L−1) and Cu (2.617 ± 0.078 mg L−1). Conclusions. Consumption of heavy metal-contaminated agricultural products can cause deleterious human health effects, leading to further health problems. The presence of multi-heavy metal ions above the Food and Agriculture Organization of the United Nations (FAO) permissible limits indicated that drain water was not suitable for irrigational purposes, and adequate measures are required to remove the heavy metal load from drain water. Competing Interests. The authors declare no competing financial interests.
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Kumar, Amit, et Sarita Rana. « Population abundance of Greater Flamingo Phoenicopterus roseus (Aves : Phoenicopteridae) in district Gurugram of Haryana, India ». Journal of Threatened Taxa 14, no 4 (26 avril 2022) : 20821–27. http://dx.doi.org/10.11609/jott.7607.14.4.20821-20827.

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We quantified the population abundance of Greater Flamingo Phoenicopterus roseus in Najafgarh Drain (Jheel), Basai Wetland, and Sultanpur flats of district Gurugram, Haryana from October 2018 to December 2020. A total of 72 visits were made to the study sites. In this study, we explored the uses of an unmanned aerial vehicle (UAV) equipped with a 5-megapixel camera to census the population and distribution of Greater Flamingos. The Nikon 10 x 50 field binoculars were used for observations. A photographic record was taken using a Canon Powershot sx70hs camera. To estimate the population size, point count method was used and videos and image analysis were carried out for a more accurate count in densely packed flocks. The mean population of Greater Flamingos was 267 ± 47 observed throughout the study period from the three sites. For three years, the highest mean population of Greater Flamingos recorded was 745 ± 76 at Najafgarh Drain and the lowest was 19 ± 8 at Sultanpur Flats. The Greater Flamingos were found to be residents at Najafgarh Drain. At the Basai Wetland, two major human activities were the construction of highways along wetlands and wetland drainage have been observed that resulted in habitat fragmentation and shrinkage, which is responsible for the huge decline in their population. While at Najafgarh Jheel fishing activities and overgrowth of water hyacinth were a major threat that affect the Greater Flamingo population. The findings in this study will be beneficial for the conservation efforts of the flamingos in this area.
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Kumar, Amit, et Sarita Rana. « Population abundance of Greater Flamingo Phoenicopterus roseus (Aves : Phoenicopteridae) in district Gurugram of Haryana, India ». Journal of Threatened Taxa 14, no 4 (26 avril 2022) : 20821–27. http://dx.doi.org/10.11609/jott.7607.14.4.20821-20827.

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We quantified the population abundance of Greater Flamingo Phoenicopterus roseus in Najafgarh Drain (Jheel), Basai Wetland, and Sultanpur flats of district Gurugram, Haryana from October 2018 to December 2020. A total of 72 visits were made to the study sites. In this study, we explored the uses of an unmanned aerial vehicle (UAV) equipped with a 5-megapixel camera to census the population and distribution of Greater Flamingos. The Nikon 10 x 50 field binoculars were used for observations. A photographic record was taken using a Canon Powershot sx70hs camera. To estimate the population size, point count method was used and videos and image analysis were carried out for a more accurate count in densely packed flocks. The mean population of Greater Flamingos was 267 ± 47 observed throughout the study period from the three sites. For three years, the highest mean population of Greater Flamingos recorded was 745 ± 76 at Najafgarh Drain and the lowest was 19 ± 8 at Sultanpur Flats. The Greater Flamingos were found to be residents at Najafgarh Drain. At the Basai Wetland, two major human activities were the construction of highways along wetlands and wetland drainage have been observed that resulted in habitat fragmentation and shrinkage, which is responsible for the huge decline in their population. While at Najafgarh Jheel fishing activities and overgrowth of water hyacinth were a major threat that affect the Greater Flamingo population. The findings in this study will be beneficial for the conservation efforts of the flamingos in this area.
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Sharma, Rahul, Pooja . et Rita Singh. « A Preliminary Study on the Floristic Diversity of the Najafgarh Drain, South West Delhi ». "Phytomorphology : Phytomorphology An International Journal of Plant Sciences" 71, no 1&2 (30 juin 2021) : 51–60. http://dx.doi.org/10.56024/ispm.71.1ampersand2.2021/51-60.

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Jamloki, Asha, Anuj Ranjan, Abhishek Chauhan, S. K. Tyagi et Tanu Jindal. « Comparative Assessment of Seasonal Variation in Size-Segregated Particulate Matters around Urban Drains ». Asian Journal of Chemistry 34, no 10 (2022) : 2757–62. http://dx.doi.org/10.14233/ajchem.2022.23885.

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The rapidly growing urbanization has resulted in increased environmental pollution and degradation that has equally affected the quality of air and wastewater. Urban drains that carry wastewater from households and industries are also carrying loads of pollutants. The current study was conducted to compare the trend in the concentration of particulate matter (PM) in the air, across the seasons near the urban drains in Delhi, a metropolitan city. The air samples were taken from Najafgarh drain, which is the biggest drain of Delhi city and has a contribution of about 60% of the total wastewater released from Delhi city into river Yamuna. The Indian Standard method IS 5182 Part 24:2019 was used for PM2.5 & IS 5182 Part 23:2006 was used for PM10 monitoring and analysis. The results of the analysis showed that the variation in particulate matter (PM) is observed with changes in relative humidity and with seasonal changes. The variation in PM2.5 levels was seen in a range of 55.30-118.42 μg/m3 from June 2020 to February 2021 & in PM10 levels were seen in the range of 77.54-261.99 μg/m3 during June 2020 to February 2021 for location L1. The variation in PM2.5 levels was seen in a range of 23.84-76.94 μg/m3 from June 2020 to February 2021 & in PM10 levels were seen in the range of 42.06-149.48 μg/m3 during June 2020 to February 2021 for location L2. Few studies have shown that contaminants can enter into the fresh air from the municipal wastewaters and open drains.
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SHEKHAR, SHASHANK, et ADITYA SARKAR. « Hydrogeological characterization and assessment of groundwater quality in shallow aquifers in vicinity of Najafgarh drain of NCT Delhi ». Journal of Earth System Science 122, no 1 (février 2013) : 43–54. http://dx.doi.org/10.1007/s12040-012-0256-9.

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Haq, M. Anul, et P. C. Rishinandan Yoga. « RIVER REJUVENATION WITH THE AID OF GIS AND REMOTE SENSING FOR SAHIBI WATERSHED ». International Journal of Engineering Applied Sciences and Technology 5, no 8 (1 décembre 2020). http://dx.doi.org/10.33564/ijeast.2020.v05i08.017.

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Sahibi River is the ephemeral, seasonal river flowing through Rajasthan, Haryana and ends in Najafgarh drain in Delhi. But, it is facing drought for more than a decade due to Climate change, Irregular irrigation and improper Land use management around the Sahibi watershed. To solve this problem, construction of water structures can be helpful to trap the rainfall and increase the water table which will lead to the restoration of the Sahibi River.
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Nehra, Vaishali, et SK Singh. « Assessment of Water Quality of Najafgarh Drain and Its Impact on River Yamuna ». SSRN Electronic Journal, 2020. http://dx.doi.org/10.2139/ssrn.3577270.

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Rohit Mayur Patole. « Realtime Monitoring Source Tracking Water Pollution in Najafgarh Drain Before During COVID-19 Outbreak with FOREMS ». International Journal of Engineering Research and V9, no 06 (19 juin 2020). http://dx.doi.org/10.17577/ijertv9is060246.

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Thèses sur le sujet "NAJAFGARH DRAIN"

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NEHRA, VAISHALI. « ASSESSMENT OF WATER QUALITY OF NAJAFGARH DRAIN AND ITS IMPACT ON RIVER YAMUNA ». Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16417.

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Water is one of the basic amenities of life and Yamuna is a major source of water supply for Delhi and nearby states of Haryana, Uttar Pradesh, Rajasthan etc. Due to the rapid growth of industries and advanced agricultural activities in and around national capital territory Delhi, the deterioration of Yamuna river has become a major concern. The objective of this study is to assess the Water Quality Of Najafgarh drain and unveil the present deteriorated condition of Yamuna river in Delhi. A comparison has been made between the water quality of river Yamuna before and after the confluence of Najafgarh Drain into it. The present situation and contamination level of River has been analysed due to various drains present in the Delhi stretch. The effect of pollution load and waste water added to Yamuna in Delhi is studied by comparing the water quality in river Yamuna at palla( before entering in Delhi) and at Okhla barrage (the downstream point from where the river Yamuna meets Agra canal and leaves Delhi.). For the study, water samples were collected from six different locations in river and Najafgarh Drain. Experimental results indicated that the water quality of river was comparable with the Drain as most of the parameters were exceeding the prescribed standards for surface water. The WQI is calculated for the various locations of Yamuna river and it indicated that tremendous efforts are required to improve the water quality of river Yamuna. As Yamuna water is used for irrigation so the suitability of water for irrigation is analyssed using different irrigation parameters. Overall the study concluded that Yamuna river has been converted into a Drain in Delhi stretch and its water is not suitable for any other purposes without proper and highly efficient treatment system.
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