|
|||||
|
|
Risk management of BTEX contamination in ground water--an integrated fuzzy approach |
|
| Authors: | Qin X S Huang G H Li Y P |
| Institution: | Faculty of Engineering, University of Regina, Regina, Saskatchewan, Canada S4S 0A2.; Chinese Research Academy of Environmental Science, North China Electric Power University, Beijing, China 100012-102206.; College of Urban and Environmental Sciences, Peking University, Beijing, China 100871. |
| Abstract: | An integrated fuzzy simulation-assessment method (FSAM) was developed for assessing environmental risks from petroleum hydrocarbon contamination in ground water. In the FSAM, techniques of fuzzy simulation and fuzzy risk assessment were coupled into a general framework to reflect a variety of system uncertainties. A petroleum-contaminated site located in western Canada was selected as a study case for demonstrating applicability of the proposed method. The risk assessment results demonstrated that system uncertainties would significantly impact expressions of risk-level outputs. A relatively deterministic expression of the risks would have clearer representations of the study problem but may miss valuable uncertain information; conversely, an assessment under vaguer system conditions would help reveal potential consequences of adverse effects but would suffer from a higher degree of fuzziness in presenting the modeling outputs. Based on the risk assessment results, a decision analysis procedure was used to calculate a general risk index (GRI) to help identify proper responsive actions. The proposed method was useful for evaluating risks within a system containing multiple factors with complicated uncertainties and interactions and providing support for identifying proper site management strategies. |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |