关键词: 流域水污染; 应急处理技术; D-S证据理论; 决策方法;

Abstract: As a sudden pollution accident occurs in a river basin,decision makers need to quickly select the optimal emergency treatment technology according to the actual accident characteristics.In order to solve the problem that the optimal emergency treatment technology can not be selected by the Case-Based Reasoning method due to the insufficient case base of sudden water pollution accidents,so a distance function of the Dempster–Shafer evidence theory between the identification indexes of the emergency treatment technology for sudden water pollution accidents was proposed.The Dempster–Shafer evidence theory can effectively resolve the conflict between the expert opinions,thus the identification indices relationship of the emergency treatment technology is determined.Finally,taking the cadmium pollution incidents in Beijiang,Guangdong Province and the leakage accident of crude phenol tanker in Funing County,Yunnan Province as examples,the optimal emergency treatment technology for the accident was identified successfully.The results showed that the decision-making method of emergency treatment technology was scientific and feasible,which could improve the efficiency of emergency decision-making for sudden pollution accidents in river basins,and provided decision support for the selection of emergency treatment technology.

Key words: river basin water pollution accidents; emergency treatment technology; Dempster–Shafer evidence theory; decision-making method;