Author(s): Natsumi Okamine; Hitomi Sugimachi; Keiko Nakamuta; Kenji Jinno
Linked Author(s):
Keywords: Marine sediment pollution; Tributyltin; Treatment System; Coagulation; Filtration; Absorption
Abstract: Preliminary experiments and modeling were studied for a pilot plant of Tributyltin (TBT) contaminated sediments in prospect of a sequential treatment system. Flocculation test by four kinds of coagulant showed that PSI-100 is better than the other agents and that its optimal amount of applied coagulant was 0. 3 mL/L. The prototype treatment plant consisted of filtration by polyethylene fiber sheet, sand and activated carbon was tested in order to know the decrease in the TBT concentration through the filtering materials. The experiment showed that the outlet TBT concentration can be optimally controlled by designing the length of each material taking account for their cost. A quantitative evaluation that can reflect local conditions, for example, societal, geographical, and environmental characteristics, becomes indispensable for the systematic treatment when remediation of marine environment is planned. In order to satisfy these demands, the sensitivity analysis for a mathematical model was done. It was concluded that the adopted mathematical is applicable for designing the efficient treatment plant.
Year: 2005