سال انتشار: ۱۳۸۱
محل انتشار: پنجمین همایش بین المللی سواحل، بنادر و سازه های دریایی
تعداد صفحات: ۱
A.A Pak – Assistant Professor Dept. of civil Eng. Sharif University of technology
M. Nowrooz Oliaie – Graduate Student, Dept. of civil Eng. Sharif University of technology
Environmental Management of dredged Materials is based on disposal on land or sea. Land Dosposal of the dredged sediments is carried out by discharging them into the areas surrunded by dikes or into landfills. The uncontaminated dredging materials can also used for beach nourishment, construction of artificial islands, or agricultural uses. On the other hand, offshore dosposal is discharging the dredged sediments in the sea, wherever the depth of water is 30 meters or more. if the materials are contaminated, they should be disposed in confined disposal facilities (CDF) in order to prevent possible environmental damage to the sea.
Investigations show that the dredged materials from Iranian ports, harbors, and approach channels are mainly disposed in the sea. However, the dredged materials from inland waterways are disposed in the riverbanks. At this time, there are no specific regulations to follow for managment of the dredges sediments in Iran. Only in Balmanshir river a kind of temporary stabilization method is used for the silty sediments.
In this paper, after reviewing the situation of the Iranian dredging industry, Solidification and Stabilization (S/S) methods for uncontaminated sediment are discussed. Also some methods for decontamination of the contaminated sediments are presented. Finally according to the Ecological and Environmental characteristics of the Iranian coastal area, suitable managements methods are discussed.