METHOD FOR RECOVERY OF DEEP ANODE BED Russian patent published in 2016 - IPC C23F13/00 

FIELD: construction.

SUBSTANCE: invention relates to protection of underground structures and pipelines from electrochemical corrosion and can be used for recovery of deep anode beds. Method includes washing the bed, in-layer filling, sealing, moistening the activator in the well and connecting the bed to the cathodic protection station, herewith for access to the bed the wellbore is cleaned from soil to the upper electrode of the bed, when washing the bed the water is pumped through a gas outlet tube, water with impurities is extracted through the well head, after which the water pumping is continued till the moment of termination of the water spout through the well head, and prior to filling the activator process exposure is performed till drying of the well, herewith the activator is represented by granules of fraction of up to 5 mm of a current-conducting material with specific electric resistance of not more than 1·10^-2 Ohm·m.

EFFECT: technical result is upgraded efficiency of recovery of serviceability of an anode bed.

1 cl, 3 ex