The Secondary Pollution Risk of Environmental Dredging Project and Technical Measures
Type:
Presented during:
WODCON XXII - Enhance the Harmony between Dredging and Ecology
Authors:
Yang Xiaolong, Yue Shaolin, Jiang Xiaopeng, Lu Yang, Chen Wei, Chai Peihong
Abstract
"(Article in Chinese only) - Environmental Dredging is a technique of heterotopic restoration of polluted sediment through engineering measures. It is an economical,highly effective and complete measure to treat polluted sediment, which can effectively reduce the release of pollutants from sediment into water systems and create conditions for the recovery of water ecosystem. However, during the process of environmental dredging operations, the polluted sediment particles are prone to suspending and diffusing. Besides, inevitable leakage accident in the transportation process, improper disposal and smell of sediment, the difficulty to reach discharge standard for residual water, all of the problems above are possible to cause secondary pollutions to our environment. Accordingly, the optimization of dredging equipment, the research on resources utilization of dredged sediment containing pollutants have been widely carried out at home and abroad, which can effectively reduce the secondary pollution risk of the environmental dredging project to the ecological environment, providing innovations for management in ecological environment."
Keywords: environmental dredging,secondary pollution, suspended substance, sediment