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Identification of Major Risk Sources for Surface Water Pollution by Risk Indexes (RI) in the Multi-Provincial Boundary Region of the Taihu Basin, China.

Yao H, Li W, Qian X - Int J Environ Res Public Health (2015)

Bottom Line: Environmental safety in multi-district boundary regions has been one of the focuses in China and is mentioned many times in the Environmental Protection Act of 2014.The procedure proposed could be included in the integrated risk management systems of the multi-district boundary region of the Taihu basin.It could help decision makers to identify major risk sources in the risk prevention and reduction of surface water pollution.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China. yaohong80@126.com.

ABSTRACT
Environmental safety in multi-district boundary regions has been one of the focuses in China and is mentioned many times in the Environmental Protection Act of 2014. Five types were categorized concerning the risk sources for surface water pollution in the multi-provincial boundary region of the Taihu basin: production enterprises, waste disposal sites, chemical storage sites, agricultural non-point sources and waterway transportations. Considering the hazard of risk sources, the purification property of environmental medium and the vulnerability of risk receptors, 52 specific attributes on the risk levels of each type of risk source were screened out. Continuous piecewise linear function model, expert consultation method and fuzzy integral model were used to calculate the integrated risk indexes (RI) to characterize the risk levels of pollution sources. In the studied area, 2716 pollution sources were characterized by RI values. There were 56 high-risk sources screened out as major risk sources, accounting for about 2% of the total. The numbers of sources with high-moderate, moderate, moderate-low and low pollution risk were 376, 1059, 101 and 1124, respectively, accounting for 14%, 38%, 5% and 41% of the total. The procedure proposed could be included in the integrated risk management systems of the multi-district boundary region of the Taihu basin. It could help decision makers to identify major risk sources in the risk prevention and reduction of surface water pollution.

No MeSH data available.


Sketch map of the study area.
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ijerph-12-10150-f001: Sketch map of the study area.

Mentions: The multi-provincial boundary region of the Taihu basin was determined by the region’s contribution to the water quality of national controlled cross-sections on the pollutant loads, which was calculated by water quality model of the basin (Figure 1). The area of the inter-provincial boundary region is about 7712 km2 and there are 31 water quality conventional monitoring points controlled by the nation (Figure 1). The region studied has complex river networks. The flow is mainly from west to east and from north to south in Jiangsu province, and from south to north on the border of Zhejiang province and Shanghai. Water quality in the region is in a poor state and none of the 31 points mentioned above could meet the national water quality requirements [20,21].


Identification of Major Risk Sources for Surface Water Pollution by Risk Indexes (RI) in the Multi-Provincial Boundary Region of the Taihu Basin, China.

Yao H, Li W, Qian X - Int J Environ Res Public Health (2015)

Sketch map of the study area.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555335&req=5

ijerph-12-10150-f001: Sketch map of the study area.
Mentions: The multi-provincial boundary region of the Taihu basin was determined by the region’s contribution to the water quality of national controlled cross-sections on the pollutant loads, which was calculated by water quality model of the basin (Figure 1). The area of the inter-provincial boundary region is about 7712 km2 and there are 31 water quality conventional monitoring points controlled by the nation (Figure 1). The region studied has complex river networks. The flow is mainly from west to east and from north to south in Jiangsu province, and from south to north on the border of Zhejiang province and Shanghai. Water quality in the region is in a poor state and none of the 31 points mentioned above could meet the national water quality requirements [20,21].

Bottom Line: Environmental safety in multi-district boundary regions has been one of the focuses in China and is mentioned many times in the Environmental Protection Act of 2014.The procedure proposed could be included in the integrated risk management systems of the multi-district boundary region of the Taihu basin.It could help decision makers to identify major risk sources in the risk prevention and reduction of surface water pollution.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China. yaohong80@126.com.

ABSTRACT
Environmental safety in multi-district boundary regions has been one of the focuses in China and is mentioned many times in the Environmental Protection Act of 2014. Five types were categorized concerning the risk sources for surface water pollution in the multi-provincial boundary region of the Taihu basin: production enterprises, waste disposal sites, chemical storage sites, agricultural non-point sources and waterway transportations. Considering the hazard of risk sources, the purification property of environmental medium and the vulnerability of risk receptors, 52 specific attributes on the risk levels of each type of risk source were screened out. Continuous piecewise linear function model, expert consultation method and fuzzy integral model were used to calculate the integrated risk indexes (RI) to characterize the risk levels of pollution sources. In the studied area, 2716 pollution sources were characterized by RI values. There were 56 high-risk sources screened out as major risk sources, accounting for about 2% of the total. The numbers of sources with high-moderate, moderate, moderate-low and low pollution risk were 376, 1059, 101 and 1124, respectively, accounting for 14%, 38%, 5% and 41% of the total. The procedure proposed could be included in the integrated risk management systems of the multi-district boundary region of the Taihu basin. It could help decision makers to identify major risk sources in the risk prevention and reduction of surface water pollution.

No MeSH data available.