Non-point source pollution and its impact on drinking water quality in River Nile- A case study of Juba South Sudan

2020 ◽  
Vol 10 (9) ◽  
pp. 483-496
Author(s):  
Harrison Henry Boying ◽  
Fang Ping
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Point Source ◽  
South Sudan ◽  
Drinking Water Quality ◽  
River Nile ◽  
Point Source Pollution ◽  
Non Point Source Pollution

scholarly journals Spatial-Temporal Change of Land Use and Its Impact on Water Quality of East-Liao River Basin from 2000 to 2020

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1955
Author(s):  
Mingxi Zhang ◽  
Guangzhi Rong ◽  
Aru Han ◽  
Dao Riao ◽  
Xingpeng Liu ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Land Use Change ◽  
Point Source ◽  
Water Body ◽  
Forest Land ◽  
Point Source Pollution ◽  
Construction Land ◽  
Unused Land ◽  
Non Point Source Pollution

Land use change is an important driving force factor affecting the river water environment and directly affecting water quality. To analyze the impact of land use change on water quality change, this study first analyzed the land use change index of the study area. Then, the study area was divided into three subzones based on surface runoff. The relationship between the characteristics of land use change and the water quality grade was obtained by grey correlation analysis. The results showed that the land use types changed significantly in the study area since 2000, and water body and forest land were the two land types with the most significant changes. The transfer rate is cultivated field > forest land > construction land > grassland > unused land > water body. The entropy value of land use information is represented as Area I > Area III > Area II. The shift range of gravity center is forest land > grassland > water body > unused land > construction land > cultivated field. There is a strong correlation between land use change index and water quality, which can be improved and managed by changing the land use type. It is necessary to establish ecological protection areas or functional areas in Area I, artificial lawns or plantations shall be built in the river around the water body to intercept pollutants from non-point source pollution in Area II, and scientific and rational farming in the lower reaches of rivers can reduce non-point source pollution caused by farming.

scholarly journals Evaluation of drinking water quality indices (case study: Bushehr province, Iran)

2017 ◽  
Vol 4 (2) ◽  
pp. 73-79 ◽  
Author(s):  
Nematollah Jafarzadeh ◽  
Maryam Ravanbakhsh ◽  
Kambis Ahmadi Angali ◽  
Ahmad Zare Javid ◽  
Darioush Ranjbar Vakil Abadi ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Drinking Water Quality ◽  
Quality Indices ◽  
Water Quality Indices

Using Arc GIS to explore the impact of environmental and ecological factors on water body

2021 ◽  
Vol 7 (6) ◽  
pp. 6247-6261
Author(s):  
Xiaoqing Liu ◽  
Juanfen Wang
Keyword(s):  
Water Quality ◽  
Numerical Model ◽  
Point Source ◽  
River Water ◽  
Ecological Factors ◽  
River Water Quality ◽  
Pollution Sources ◽  
Point Source Pollution ◽  
The Impact ◽  
Non Point Source Pollution

As water pollution is more and more serious, ArcGIS is proposed to explore the impact of environmental and ecological factors on water. Taking the river water quality as the research object, this paper simulates and analyzes the endogenous and non-point source pollution and water quality through indoor physical model experiment, hydrological and water quality numerical model and water quality numerical model, and analyzes the impact of different environmental changes on river water quality and pollution sources from micro and macro perspectives. The main contents include: experimental study on the influence mechanism of overlying water velocity, disturbance and water temperature on sediment endogenous release, construction and simulation of watershed non-point source pollution model, construction and simulation of watershed river water quality model, as well as the impact of environmental change on river water quality and quantitative analysis of river pollution sources.

Three essays on phosphorus runoff and water quality

2019 ◽  
Author(s):  
◽  
Seungyub Lee
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Point Source ◽  
Point Sources ◽  
Point Source Pollution ◽  
University Of Missouri ◽  
P Fertilizer ◽  
Limiting Nutrient ◽  
Phosphorus Runoff ◽  
Non Point Source Pollution

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Water pollution caused by nutrients, and the resulting eutrophication, have increased over time. This water pollution is increasingly caused by non-point source pollution, both nutrients and erosion. Controlling non-point pollution is important for water quality. However, non-point source pollution is not easy to track and control. In this case, management efforts can be solutions for these environmental issues in both urban and agricultural areas. In this dissertation, I focus on phosphorous (P) fertilizer because P is the limiting nutrient in freshwater systems. If we can reduce P runoff from urban and agricultural non-point sources, water quality can be improved. ... By analyzing national water quality and political economy data and by investigating a national survey of soybean producers, this dissertation found implications to increase adoption of environmentally friendly policies and practices. Solving this problem will require efforts to limit both residential and agricultural nonpoint source pollution. The results could be helpful policy makers to target specific regions to initiate environmental policies and extension efforts for designing educational programs to increase adoption rate as well as environmental quality.

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