Study On The Early-Warning Index Screening And Index System Construction For Sudden Water Pollution Accidents

Recently,water pollution accidents occur frequently in China,contaminating environment seriously,threating population health and causing enormous economic losses.Abruptness and uncertainty of the accidents are difficult problems in preventing and controlling.Environmental warning technology emergence and develop on this background,which is the effective means for accident prevention and emergency treatment,and has great research value and broad application prospects.The paper reviews both domestic and foreign researches regarding water pollution accidents warming.On this basis,accident type of water pollution in china is statistical analyzed emphatically, providing evidence for choosing alarm source index.Important influence factors of water pollution accidents are summarized in the respects of pollution accident source,water environment situation, receptor features and social economic standard,providing reference for determining alarm aura index. Mainstream index screening technologies comparative studied to analyze the principle characteristics and the application scopes,providing methods for establishing alarm index system.Establishing flow of early-warming index in water pollution accidents which is applied to the raw-leaking simulating accident in storage tank zone of KOREA Polyol Company in nanjing chemical industry is built up with reference value.The findings get such conclusions as follows:equipment＆process defaults,hazard products transportation accidents and human factors are major causes for water pollution accidents which account for 91.7%of the research cases,and they should be key concerned in risk sources Identification. Understand and grasp environmental-risk basic information of research area using risk-source identification lists which are specially designed.Influencing factors of pollution accident source,water environment situation,receptor features and social economic standard describe the whole water pollution accidents,and the induction and conclusion provide reference for researching water pollution accidents process.AHP method has advantages in scientific,accuracy,simple algorithm and so on comparing to other celected methods,which should be used as the first choice for index screening in some cases.The established universal index system of water pollution accidents includes alert degree index,alert source index and alert aura index which reflect damage grade,ancident causes and influence factors to provide reference for early-warning work.