In-situ electric stratified remediation device and method for accurate position in remediation depth in sediment

An in-situ electric stratified remediation device for accurate position in remediation depth in sediment, comprising a telescopic rod, a porous cylinder, a water storage tank, a curing agent storage device, and a depth determining module;

• wherein the curing agent storage device is mounted at top of the porous cylinder and is connected to a bottom of the telescopic rod, and the water storage tank is disposed at bottom of the porous cylinder and is communicated with the porous cylinder;
• wherein the porous cylinder is embedded with a columnar electrode connected to a power source, and a permeable mudguard cloth is covered on the porous cylinder;
• wherein the water storage tank is configured to collect contaminants enriched in vicinity of the device and converged along a surface groove of the columnar electrode along with sediment pore;
• and the depth determining module is configured to send indication information in response to that the curing agent storage device is just inserted below a mud-water interface, so that the device is inserted to a specified depth below the mud-water interface by the telescopic rod, while the depth determining module triggers release of the curing agent from a curing agent shroud to fill a gap between a surface of the device and the sediment.