大型城市内湖环保疏浚工程设计

Engineering Design of Environmental Dredging for Large Muncipal Lake

受外源输入性污染影响,某城市内湖底泥淤积较为严重,淤泥层厚度0.5~1.8 m,成为水体水质污染的潜在污染源。为削减底泥污染物的蓄积和释放,清除湖泊表层污染底泥,实施了湖泊底泥环保疏浚工程。介绍了环保疏浚总体方案的制定和淤泥处理场的具体设计,主要包括疏浚范围及规模、疏浚设备选型、疏浚施工工序、淤泥处理工艺和主要生产构筑物等建设内容。工程竣工后,湖泊水质显著改善,实现了疏浚淤泥的“减量化、稳定化、资源化”,其实施经验可为其他类似工程提供借鉴和参考。

Due to the impact of external pollution, that heavily silt with a depth of about 0.5~1.8 m at the bottom of the lake has become a potential source of water pollution. In order to reduce the accumulation and release of sediment pollutants and remove the polluted layer on the surface of lake sediment, the environmental dredging project of lake sediment was carried out. The overall scheme and the specific design of sludge treatment plant of the municipal lake are introduced, including dredging scope and scale, selection of dredging equipment, dredging construction operation, sludge treatment process, the main production structures and so on. After the completion, the lake water quality is improved significantly, and the dredging sludge is reduced, stabilized and recycled. The implementing experience can provide reference for other similar projects.