Cutter-suction packing pumping method for cleaning contaminated sediments in river

Abstract

The invention relates to a cutter-suction packing pumping method for cleaning contaminated sediments in a river, which is characterized in that: the sediments are conveyed to a hydraulic separation tank by using a cutter-suction dredger, and the left coarse particles after screening are mechanically transported to a dump to be treated; liquid fine particles self-flows into a treatment pond and are packed and sealed from the top of the treatment pond by using a closed device; a water filtering system is arranged in the sealed body, a water filtering layer capable of adsorbing heavy metal ions is arranged at the bottom of the water filtering system, a pond bottom pipe network which is communicated with the water filtering layer is arranged in the sealed body, and a pumping passage is arranged in the water filtering layer; the gas-water mixture in the sealed body is forcibly absorbed from the pumping passage by using a jet pumping and water adsorbing device until the liquid fine particles are converted into a solid state from a liquid state; the solid fine particles are mechanically transported to a centralized stacking spot; and tail water is treated by using a chemical reagent and discharged into the river after meeting the emission standard. The method has the advantages of no diffusion of pollution because the mud water body is isolated from the outside in the treatment process, no derivative, less power consumption, high efficiency and environmental-friendly treatment of underwater contaminated sediments.

Description

technical field [0001] The invention relates to a twisting and wrapping air extraction method for cleaning river channel polluted sediments, and belongs to the technical field of water environment treatment. Background technique [0002] There is no report on cleaning river polluted sediments by means of suction, wrapping, and air extraction. Contents of the invention [0003] What the present invention proposes is a kind of twisting suction package air extraction method for cleaning river channel pollution sediments. Its purpose is to use air extraction under the condition of package sealing to generate negative pressure transmission in the inclusion body, so that the pores in the fine particle fluid The directional flow of water to the high place of negative pressure reduces the water content of the fine particles and solidifies them. [0004] The technical solution of the present invention: it is characterized in that the river channel pollution sediment is transported...

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Problems solved by technology

[0005] The invention has the advantages that the muddy water body is isolated from the outside world during the treatment process, the pollution does not spread, there is no derivative, the energy consumption is low, and the efficiency is high, which solves the problem of cleaning up the polluted sediments of the river channel in an environment-friendly way, and has high social benefits and economic value

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