Investigation of Local Plants along Dagu Sewage River for Phytoremediation of Sediments

The study was aimed at investigating the local plants along two sides of Dagu River to achieve guidance on the harness, remediation or management of Dagu River. For this, the herbage plant species and their covering area, heavy metal contents in the plants, and the correlation analysis between metals in local plants and in nearby sediments were investigated. Results indicate that the dominant plants in the heavily polluted sections of Dagu River are mainly Humulus scandens, Polygoum orientale and Common reed. These three herbage plants are effective in phytoremediation of multi-metal contaminated sediments. Different planting or interplant can remediate multi-metal polluted sediments or be selected to cover the landfill sites of multi-metal polluted dredge-sediments. The results of this study may guide the current harness and remediation of Dagu River sediments and future scientific management of Dagu River.