Processing system and processing technology for removing river pollution bottom silt in central urban area

Abstract

The invention discloses a processing system and processing technology for removing river pollution bottom silt in a central urban area. The processing system comprises a multi-functional desilting vessel, a silt storage and transportation vessel and a silt dehydrating and drying vessel, wherein the multi-functional desilting vessel, the silt storage and transportation vessel and the silt dehydrating and drying vessel are communicated through pipelines. The multi-functional desilting vessel comprises a machine body, wheel-type supporting legs, a coarse garbage collection tool / reamer tool arranged at one end of the machine body and a first hydraulic system used for driving the coarse garbage collection tool / reamer tool. The silt storage and transportation vessel comprises a storage and transportation vessel body, positioning piles and a silt cabin, wherein a plurality of stirrers are further arranged in the silt cabin, the silt cabin is connected to the silt dehydrating and drying vessel through a pipeline. The silt dehydrating and drying vessel comprises a dehydrating and drying vessel body, positioning piles, a second hydraulic system, a stirring cabin, a chemical feed device and a drying device. According to the processing technology, a mobile processing station is adopted, all the devices are arranged aboard for operation, and therefore land resources are not occupied. Moreover, a processing method is simple, a processing period is short, the silt processing is thorough, and operability is high.

Description

technical field [0001] The invention relates to a process for treating river channel silt, in particular to a treatment system and process for removing polluted sediment from river channels in central urban areas. Background technique [0002] There are many rivers and lakes in Shanghai with dense water networks. It is a typical tidal river network area with rich water resources, but the hydraulic gradient is gentle, the water flows back and forth, the self-purification ability is poor, the rivers are heavily silted, and the water quality is poor. In the central area, the density of surrounding residents is relatively high. Most of the rivers in the area are tidal channels, and the river water reciprocates with the tide. Some rivers have a prominent sedimentation phenomenon. The sediment contains dozens of heavy metals, organic pollutants and other harmful substances. Great impact on water quality and aquatic ecology. When the temperature is high in summer, the polluted sed...

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