| 英文摘要 |
The purpose of this project is to assist the Environmental Management Administration to achieve yearly goal of implementation of contaminated sediment management strategy. In total, 159 sediment sampling plans and 139 sediment quality survey reports were reviewed and revised. The project also consolidated and analyzed data from the first and second rounds of sediment quality assessments. Simultaneously, 11 water bodies exceeding contamination limits were selected for sediment investigations to identify pollution sources and assess the extent of high-pollutant concentration areas. Guidelines for investigating high-potential water bodies were established, along with recommendations for management measures and task allocations.
The project consolidated and analyzed methods and technologies for investigating environmental hazards in water body sediment. Field trials were conducted at three water bodies with contaminant levels exceeding regulatory limits, employing Diffusive Gradients in Thin Films (DGT) technology to assess the ecological risks of polycyclic aromatic hydrocarbons (PAHs) in sediment for aquatic life. Propose regulatory review and revision strategies based on historical challenges and experiences in sediment quality management. Additionally, further exploration of sediment-related issues was conducted. The project also involved upgrading the ‘Sediment Quality Information System’, which was enhanced with additional environmental geographic information layers and a regional analysis function. Additionally, the project included the creation of sediment protection flyers aimed at improving public understanding of sediment testing information and related scientific knowledge.
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