Horizontally two-dimensional analysis for a technology of controlling pollutant's dispersion

In this paper the authors investigated a technology controlling pollutant's dispersion by applying an artificial floating island consisted of the catalytic filter media, and proposed an neumerical method for planning this island. Basic characteristics of the catalytic filter media and informations for designing the media are investigated through experiment. It is found that Darcy law is applicable to the flow between these media because velocity varies in proportion to water level's gradient. We have to take into account of the distribution of gain size of pollutant to exactly predict the dispersion and settling of pollutant.