Research on the Pattern of Comprehensive Improvement of Small Watershed Pollution in Guangxi Province

2014 ◽  
Vol 535 ◽  
pp. 394-398
Author(s):  
Hong Chen ◽  
Chun Yi Duan
Keyword(s):  
Point Source ◽  
Industrial Pollution ◽  
Control Measures ◽  
Small Watershed ◽  
Guangxi Province ◽  
Point Source Pollution ◽  
Pollution Remediation ◽  
Non Point Source Pollution

This paper concern the difficulties of comprehensive improvement of small watershed pollution. There were some patterns of comprehensive improvement of small watershed pollution, which include industrial pollution, domestic pollution, non-point source polluting, and rural non-point source pollution in small watershed. We put out control measures of these pollution and long-term mechanism of mall basin pollution remediation

scholarly journals Long-Term Effects of Anthropogenic Factors on Nonpoint Source Pollution in the Upper Reaches of the Yangtze River

2019 ◽  
Vol 11 (8) ◽  
pp. 2246 ◽  
Author(s):  
Xiaowen Ding ◽  
Lin Liu
Keyword(s):  
Point Source ◽  
Pollution Control ◽  
Yangtze River ◽  
Agricultural Land ◽  
Anthropogenic Factors ◽  
The Yangtze River ◽  
Long Term Effects ◽  
Point Source Pollution ◽  
Non Point Source Pollution

With the continuous enhancement of point source pollution control, non-point source (NPS) pollution has become an important factor in the deterioration of surface water quality. Meanwhile, due to the soaring global population, long-term effects of anthropogenic factors on non-point source pollution in large river basins have increasingly attracted worldwide attention. The Yangtze river is the largest river basin of China, and protecting its ecological environment has great significance on protecting the lifeline of the entire Yangtze river. In this study, the improved output coefficient and nutrient losses empirical model were used to conduct space–time simulations of non-point source pollution in the upper reaches of the Yangtze river (URYR) based on GIS during 1960–2003. This method reveals the anthropogenic effects of non-point source pollution in the upper reaches of the Yangtze river. The results indicate that the impacts of anthropogenic factors on dissolved pollutants increased significantly, while those on sediment and adsorbed pollutants increased first and then decreased during the simulation year. Agricultural land use and atmospheric deposition, as well as rural life, were the main sources of dissolved pollutants. In addition, dry land and paddy fields were the major sources of sediment and adsorbed pollutants. For the load intensities, the long-term effects of anthropogenic factors on dissolved pollutants increased rapidly, and those on the load intensity of sediment and adsorbed pollutants increased first and then decreased. Therefore, the study would propose some corresponding environmental management measures to strengthen environmental protection and non-point source pollution control in the upper reaches of the Yangtze river.

scholarly journals Evolution and Driving Forces of Non-Point Source Pollution in a Developing Megacity: Beijing as a Long-Term Case Study

2019 ◽  
Vol 29 (1) ◽  
pp. 763-777
Author(s):  
Hezhen Lou ◽  
Shengtian Yang ◽  
Fanghua Hao ◽  
Xiaoyu Ren ◽  
Changsen Zhao ◽  
...  
Keyword(s):  
Point Source ◽  
Driving Forces ◽  
Point Source Pollution ◽  
Non Point Source Pollution

Long-term monitoring and characterization of non-point source pollution from various land-use types in Korea

2021 ◽  
Vol 219 ◽  
pp. 369-378
Author(s):  
Jiyeon Choi ◽  
Jichul Ryu ◽  
Jinsun Kim ◽  
Jaehong Park ◽  
Dongseok Shin ◽  
...  
Keyword(s):  
Land Use ◽  
Point Source ◽  
Point Source Pollution ◽  
Land Use Types ◽  
Long Term Monitoring ◽  
Term Monitoring ◽  
Non Point Source Pollution

scholarly journals Cost-Effectiveness Analysis of Green–Gray Stormwater Control Measures for Non-Point Source Pollution

2020 ◽  
Vol 17 (3) ◽  
pp. 998
Author(s):  
Shi Qiu ◽  
Haiwei Yin ◽  
Jinling Deng ◽  
Muhan Li
Keyword(s):  
Cost Effectiveness ◽  
Point Source ◽  
Pollution Control ◽  
High Intensity ◽  
Control Measures ◽  
Point Source Pollution ◽  
Rainfall Events ◽  
Stormwater Control Measures ◽  
Stormwater Control ◽  
Non Point Source Pollution

The control of non-point source pollution (NPS) is an essential target in urban stormwater control. Green stormwater control measures (SCMs) have remarkable efficiency for pollution control, but suffer from high maintenance, operation costs and poor performance in high-intensity rainfall events. Taking the Guilin Road subwatershed in Rizhao, China, as a case study, a scheme for coupling gray and green stormwater control measures is proposed, and the gray SCMs are introduced to compensate for the shortcomings of green SCMs. The System for Urban Stormwater Treatment and Analysis Integration (SUSTAIN) model was employed to investigate the cost-effectiveness of three scenarios (green SCMs only, gray SCMs only, and coupled green–gray SCMs). The results show that the optimal solutions for the three scenarios cost USD 1.23, 0.79, and 0.80 million, respectively. The NPS control ability of the coupled green–gray scenario is found to be better than that of the other two scenarios under rainfall events above moderate rain. This study demonstrates that coupled green–gray stormwater control management can not only effectively control costs, but can also provide better pollution control in high-intensity rainfall events, making it an optimal scheme for effective prevention and control of urban non-point source pollution.

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