Due to the long-term discharge of industrial,agricultural and domestic pollutants into Mayuan River,the pollutants in the river channel are deposited in the bottom mud of the water body along with sediment,resulting in serious pollution of the river channel sediment,which not only affects the water ecological environment,but also reduces the flood control and drainage capacity of the river.Based on the current situation of the river,several different treatment schemes of sediment dredging are proposed and compared in terms of construction,cost and effect.Finally,the integrated process of cutter suction dredger combined with mechanical dewatering and consolidation is selected as the sediment dredging and treatment scheme of Mayuan River.After the implementation of this program,the Mayuan River has achieved good governance effect and social and economic benefits.
river dredgingsediment treatmentscheme comparisondredgerdehydration and consolidation
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