Method for removing ionic rare earth ore ammonia nitrogen pollution in situ by using eluting agent

The invention provides a method for removing ionic rare earth ore ammonia nitrogen pollution in situ through an eluting agent, and belongs to the technical field of mine ecological environment restoration. According to the method, after the ammonium sulfate ore leaching process is completed, leacheate is added into a liquid injection well of the in-situ ore leaching process for leaching ionic rare earth ore. According to the method, one or more of calcium chloride, potassium chloride, sodium chloride, sodium carbonate, potassium carbonate, magnesium sulfate, aluminum sulfate, ferric sulfate, citric acid, saponin and saponin are used as the eluting agent, residual ammonium nitrogen in the waste ionic rare earth mine can be rapidly removed, the cost is low, the method is friendly to the soil environment, and secondary pollution is avoided; and the in-situ leaching mode is adopted, the ammonium sulfate liquid injection well used in the ammonium sulfate ore leaching process is used for leaching, extra manufacturi