Method for repairing underground water through polymer flooding reinforced in-situ chemical oxidation

The invention provides a method for repairing underground water by polymer flooding reinforced in-situ chemical oxidation, which comprises the following steps: injecting a solution containing hydrolyzed polyacrylamide and an oxidizing agent into organic polluted underground water, and removing organic pollutants in the underground water after full reaction. According to the invention, hydrolyzed polyacrylamide is used as a polymer flooding to improve the diffusivity of the oxidation agent between layers with different permeability, so that a more uniform forward injection front edge is formed, and the contact between a co-injection repairing agent and dispersed pollutants is increased; and the problems that the oxidizing agent in a low-permeability layer is difficult to reach and organic pollutants are difficult to remove in a traditional chemical oxidation technology are solved, and a new method is provided for repairing the organic pollutants in a heterogeneous aquifer system through in-situ chemical oxidat