Treatment system and treatment process for removing polluted bottom mud of lakes, reservoirs and riverways

Abstract

The invention discloses a treatment system and a treatment process for removing polluted bottom mud of lakes, reservoirs and riverways. The treatment system comprises water body isolation equipment, slurry stirring equipment, centrifugal dewatering equipment and sludge storage and transportation equipment, wherein the water body isolation equipment, the slurry stirring equipment, the centrifugal dewatering equipment and the sludge storage and transportation equipment are communicated through pipelines, the water body isolation equipment comprises a plurality of isolation cavities capable of being spliced with one another and a crane for lifting and aligning the isolation cavities, the centrifugal dewatering equipment comprises a sludge conditioning and stirring system, a sludge-water separation system, a sludge dewatering system and a sludge cake spiral conveying and unloading system, the sludge storage and transportation equipment comprises a storage and transportation ship body, positioning piles for supporting the storage and transportation ship body and a mud bin located in the storage and transportation ship body, and a spiral discharging machine is arranged in the mud bin. According to the invention, the movable treatment station is adopted, all devices are arranged on a ship for operation, land resources are not occupied, the treatment method is simple, bottom mud and water body are directly separated, mud-water separation is implemented in real time, and the water content of dry mud is as low as 60%.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, in particular to a treatment system for removing polluted bottom mud from lakes, reservoirs and river courses. Background technique [0002] Water body sediment pollution is an environmental problem worldwide. Pollutants enter water bodies through atmospheric deposition, wastewater discharge, rainwater leaching and scouring, and finally deposit in the bottom mud and gradually enrich, causing the bottom mud to be seriously polluted. In fluvial environments, bed sediments are transported in the form of displacement and suspension, largely resulting in the physical interaction of overlying water and sediments. Rivers have a strong natural environment, which tends to be conducive to the desorption of sediment sediment in the river system, which will affect the water quality of the overlying water. Pollutants can persist, accumulate and migrate through biological metabolism to produce toxicit...

AI Technical Summary

Problems solved by technology

However, in the process of dredging sludge, it is usually necessary to use reamers, water guns and other devices to loosen the bottom mud to become mud, but the loose bottom mud is easy to diffuse with the flow of water, and the bottom mud with pollutants will spread in the water. As a result, the scope of pollution has been expanded. At the same time, the diffusion of loose sediment will increase the turbidity of the river, which increases the difficulty of river and lake governance.