Study On The Coordination Relation Of Eutrophication And POPs By Multimedia Environmental Models

Eutrophication and POPs are two serious environmental pollution problems. Some qualitative or semi-quantitative prediction models were built to study these problems. Eutrophication are existing in water always companied with POPs. The relation between them has been unknown and no prediction models were built up to date. So it is very important and nessassary to study the relationship between eutrophication and POPs in any water system.The Level â…¢ model and its feasibility were studied in this article. Based on the original Level â…¢ model, algae was separated from water phase as one of individual compartment in system. Through using the modified Level â…¢ model, the aquatic ecosystem had been simulated and the relationship between eutrophication and POPs was discussed. Through comparing the simulation results and measuring values, it could be concluded that the modified model brings out a new method to solve water environmental pollution problems more satisfactorily, and to get accurate and effective estimating.In order to describe the evolution process, transport mode, structural form and global dynamical beharvior of POPs in fluvial environment, this paper anlysised the act of algae in water environment, made clear the relation of algae and other environmental medias and modified the Level â…¢ model. This article revealed the relation among the eutrophication, algae and POPs and discussed the effect of eutrophication on the distribution of POPs. It could be theoretics base of evaluation and forecast of POPs' congregation, diffusion, distribution and evolution process. The results show that the method in this article might become a new method and tool for researching on the relation between eutrophication and POPs.At last, Based on the data of Taihu Lake ,Modified model was used to calculate the distribution of POPs in Taihu Lake, and through changing the eutrophication factors , we discussed the effect of them on the distribution of POPs. By comparing the simulation results and measuring values, it is suggested that the model about the relation between eutrophication and POPs has much reference value and could act as base of POPs pollution control.