TWO-DIMENSIONAL NUMERICAL, ECO-TOXICOLOGICAL MODELING OF CHEMICAL SPILLS
Chemical spills of various sizes happened everywhere in the world nowadays due to paramount production, storage, usage of chemicals. The safety and normal function of aquatic eco-system have thus been increasingly threatened by spilled chemicals. How to evaluate the effect of chemical spills on aquatic nontarget organisms has been a challenge due to the fact that aquatic coo-systems are an integrated entity with numerous organisms of varying species, body sizes and numbers. Based on a review of current three ecotoxicological models of chemical fate, i.e., ACQUATOX model of US-EPA, Hudson River Model of PCBs, and CBR model and DEBtox model, this paper presented an uncoupled ecotoxicological model in the sense that it simulates chemical transport and transformation of chemical spills and mortality of an organism caused by the chemical separately. The chemical fate was simulated by a chemical transport model. Organism killings were simulated by the extended threshold damage model, which was developed originally for experimental cases and extended here for natural water bodies. Due to extreme scarcity of data, this model was applied in a hypothetical case: a certain amount of pentachlorophenol spills upstream of a lake. Theoretical analysis and simulated results indicated that this model is capable of reasonably predicting acute effects of chemical spills on aquatic ecosystem or organism killings.
Chemical spills Acute Effects Aquatic Ecosystem Ecotozicological Modeling
Suiliang Huang Yafei Jia Sam S.Y.Wang
Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of Education,Tianjin Ke Nantional Center for Computational Hydroscience and Engineering, The University of Mississippi, USA National Center for computational Hydroscience and Engineering, The University of Mississippi, USA
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
699-704
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）