The main source of agricultural non-point source pollution in the Yellow River and the classification of control measures

2015 ◽  
pp. 3-8
Author(s):  
Yawei Hu ◽  
Qiangkun Li ◽  
Weiwei Chen
Keyword(s):  
Point Source ◽  
Yellow River ◽  
Control Measures ◽  
The Yellow River ◽  
Point Source Pollution ◽  
Non Point Source Pollution

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 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.

scholarly journals Numerical Simulations of Non-Point Source Pollution in a Small Urban Catchment: Identification of Pollution Risk Areas and Effectiveness of Source-Control Measures

Water ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 96
Author(s):  
Ye Pan ◽  
Jiaxun Guo ◽  
Long Yang ◽  
Qiqi Yuan ◽  
Zhihui Ren ◽  
...  
Keyword(s):  
Point Source ◽  
Numerical Simulations ◽  
Urban Environments ◽  
Control Measures ◽  
Source Control ◽  
Point Source Pollution ◽  
Urban Catchment ◽  
Pollution Risk ◽  
Risk Areas ◽  
Non Point Source Pollution

Urban non-point source pollution is becoming a serious issue under the context of rapid urbanization and its impacts on surface hydrologic processes. The identification of non-point source risk areas and the effectiveness of source-control measures provides important first steps to improve the degrading aquatic environment but is challenged by the complex dynamics and variabilities of surface pollutants in urban environments. In this study, we investigate the spatial and temporal variabilities of non-point source pollution in a small urban catchment based on numerical simulations and in-situ samplings. Our results show that residential, industrial, and commercial land contribute to the most pollutant loadings and are the main constituents of the pollution risk area. Rainfall duration and intensity are the main factors in determining the temporal variations of urban non-point source pollution. There is no correlation between early drought days and pollution load. Numerical simulations show that it is more effective to increase urban vegetation coverage than to enhance road cleaning for effective non-surface pollution control. For enhanced road cleaning, it is more effective to improve the frequency of road cleaning than its efficiency. Our results provide important guidance for effective controls of non-point source pollution as well as the establishment of long-term surface pollutant monitoring network in complex urban environments.

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