Dissertation > Excellent graduate degree dissertation topics show

Empirical Studies on Risk Assessment System of Accidental Water Pollution Events in City’s Source Water Area

Author: ZhangYu
Tutor: YangKai
School: East China Normal University
Course: Environmental Science
Keywords: City’s Source Water Area Accidental Water Pollution Time Sequence Risk Assessment System Characteristic Time Index Huangpu River
CLC: X820.4
Type: Master's thesis
Year: 2006
Downloads: 1811
Quote: 26
Read: Download Dissertation

Abstract


Presently, most of domestic cities are under progress of rapid urbanization, meanwhile the conflicts between source water protection and city development are increasingly arising, and accidental pollution of source water is becoming as one of the focusing issues. As an opening water body, the upper watershed of Huangpu River would serve as No.1 source water area of Shanghai for a long time. However, the source water area has suffered from various pollutions over past few decades, especially including accidental pollution events. According to the current situation and future development, ship’s oil spill accident is expected to become one of the most dominant risk events threatening the safety of the source water area of Huangpu River. Therefore, it is meaningful to carry out empirical studies on the risk management theory and assessment method in terms of the accidental pollution events in source water area.The paper reviews both domestic and foreign researches regarding accidental water pollution, especially for the subject of accidental water pollution event in source water area. From the perspective of risk assessment, 7 typical risk sources causing accidental pollution events in source water area are identified and also be classified according to locations, polluting approaches and diffusing modes in the paper. Additionally, the major accidental water pollution events occurred in source water areas in China during the last 20 years are summarized and analyzed. Especially, characteristics of the accidental water pollution event in water source area are analyzed with the example of ship’s oil spill and leakage, and the detailed characteristics are including uncertainty of risk sources, vulnerability of risk acceptor, time sequence of risk process, emergency of risk assessment and complexity of emergency action.On the basis of traditional system of environmental risk assessment, the paper presents the "Time Sequence Assessment Systems" specially for assessing the risk of accidental water pollution event in water source area. According to "Time Sequence Assessment Systems", the event is divided into three time sections, which are respectively called as "Before Occurrence Section", "Under Occurrence Section" and "After Occurrence Section", and each section correspondingly matches up with "Risk Forecast Assessment", "Risk Emergency Assessment" and "Risk Impact Assessment". Concretely, "Risk Forecast Assessment" focuses on evaluating the "accident risk", "Risk Emergency Assessment" focuses on evaluating the "impact to intake", and "Risk Impact Assessment" focuses on evaluating the "risk to water and health".Supported by the project of National Natural Science Founding: Empirical Studies on Environmental Safety in Urban Water Source area and Emergency Mechanism for Accidental Pollution Events CNo.70403005) , and the project of Key Scientific Issue of Shanghai Science Committee: Research on Early-warning System for Accidental Water Pollution Events in Huangpu River and Decision-making Supporting Systems of Watercourse (04dzl2031), .the paper conducts "Risk Forecast Assessment" and "Risk Emergency Assessment" with the object of source water area in Huangpu River.The paper conducts risk identification and risk analysis on the accidental water pollution event in Huangpu River, and eventually has the following major conclusions: ship’s fuel oil leakage is the major risk event; Wujing section is the highest risk area; the most reliable event is the ship’s fuel oil leaking in Wujing section under the conditions of flood tide and south-east wind.

Related Dissertations

  1. Water environment based on multi- model remote simulation technology research,TP391.9
  2. Study on Inversion Model for Accidental Water Pollution Based on GST-MQ Collocation Method,X52
  3. Research on Environmental Risk Source Identification of Sudden Water Pollution Accident Based on Safety Theory,X820.4
  4. Urban Waterfront Tourism Development,F592
  5. The Research on Eco-compensation Mechanism in Water Source of Upper Huangpu River,TV213.4
  6. Research on Basin Sudden Water Pollution Accident Risk Prevention Systems,X52
  7. The Modern Shanghai Pudong urban change research,F127
  8. Utilization Characters and Functional Promotion of Bank Lines along Huangpu River in Urban Shanghai,F127
  9. Study on the Method and Index System of River Ecosystem Restoration Assessment,X171
  10. Port of Shanghai Huangpu River ship TV monitoring system planning and design,U691.6
  11. Study and Application of the Huangpu River Accidental Oil Spill Simulation Model,X522
  12. Research on Remote Sensing Based Water Quality Monitoring Models in Huangpu River Upstream Waters,X832
  13. Study on the Project in the Huanpu River Barray,TV66
  14. Study on the Structure of Phytoplankton Community and Its Indication of Environment in Suzhou Creek and Huangpu River,Q948.8
  15. Special Research on the Removal Pollutant by Ozonation and BAC Filtration,TU991.2
  16. Treatment of HuangPu River Water by Ultrafiltration Combined with Coagulation,TU991.2
  17. Study on the Simulation of Accidental Oil Spill in the Huangpu River,X522
  18. Application of Remote Sensing Monitoring in Water Quality and Landuse of Upstream Huangpu River,X87
  19. Study on Distribution of Low Molecular Weight PAHs in Huangpu River,X522
  20. The Research of Urban Space and Environment of Linear Waterfront,TU984.18
  21. Environmental Effects of Land Use and Cover Change on River Systems in Huangpu River Catchments,P461.8

CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > General issues > Risk Assessment
© 2012 www.DissertationTopic.Net  Mobile