Double-ring vertical self-cleaning electric remediation device and method for in-situ dehydration and pollution reduction

Abstract

The invention discloses a double-ring vertical self-cleaning electric remediation device and method for in-situ dehydration and pollution reduction. The device comprises pore water collecting rings, cathode protection liquid releasing rings, water-diverting insulating anti-blocking cathodes, inert anodes, cathode protection liquid storage tanks, pore water storage tanks, pH sensors, peristaltic pumps and programmable controllers; the cathode protection liquid releasing rings and the pore water collecting rings are connected through the water-diverting insulating anti-blocking cathodes, the water-diverting insulating anti-blocking cathodes are arranged around the inert anodes, capillary water-diverting filtering pipes are arranged in the water-diverting insulating anti-blocking cathodes, the cathode protection liquid releasing rings communicate with the pore water collecting rings through the capillary water-diverting filtering pipes, the pore water collecting rings and the cathode protection liquid releasing rings are connected with the peristaltic pumps, and the peristaltic pumps communicate with the pore water storage tanks and the cathode protection liquid storage tanks; and thepH sensors are installed in the pore water storage tanks, and the pH sensors and the peristaltic pumps are connected with the programmable controllers. According to the double-ring vertical self-cleaning electric remediation device and method for in-situ dehydration and pollution reduction, with the intentions of maximumlly diverting and discharging pore water and separating out pollutants, electrode blocking and enrichment of pollutants of cathode regions are reduced.

Description

technical field [0001] The invention relates to the field of treatment and repair of polluted bottom mud, in particular to a double-ring vertical self-cleaning in-situ dehydration and pollution reduction electric repair device and method. Background technique [0002] Sediment is an important part of river and lake ecosystems, mainly composed of inorganic minerals, organic matter and mobile phase. There are many rivers and lakes in my country. In many economically developed and densely populated areas, human activities such as industrial and agricultural production have caused rivers and lakes to be polluted to varying degrees, and a large number of pollutants are enriched in the sediment, resulting in serious endogenous pollution. When the concentration of sediment pollutants is 2 to 3 times higher than the background value, it is considered to be a potential hazard to humans and aquatic ecosystems, and pollution release control needs to be carried out by in-situ covering a...

AI Technical Summary

Problems solved by technology

[0009] (1) The accumulation of OH- leads to the accumulation of pollutants near the cathode area, causing problems such as electrode scaling and blockage, poor pore water drainage and pollutant enrichment; during the electrodynamic repair process, pollutants migrate more, but are finally separated and removed not enough;

[0010] (2) Insufficient integrated consideration of pore water drainage, pH value monitoring and control in the cathode area, and cathode anti-scaling protection, resulting in interruption of the electric repair process or electrode replacement, etc.;

[0011] (3) The contact area between the sheet or rod electrode and the sediment is limited, the pore water conduction capacity is low, and the pollution separation and removal are insufficient

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