Method and system for removing phosphorus from electroplating wastewater

The invention discloses a method and a system for removing phosphorus from electroplating wastewater, and belongs to the field of sewage treatment. The method for removing phosphorus from the electroplating wastewater comprises the following steps that S1, a phosphorus removal agent is added into the electroplating wastewater, filtering is conducted for the first time, first waste residues and first produced water are obtained, and the phosphorus removal agent comprises aluminum sulfate, basic aluminum chloride, rare earth metal salt and hydrogen peroxide; s2, adding caustic alkali into the first produced water, adjusting the pH value of the electroplating wastewater to be alkaline, adding CaO and sodium hypochlorite under mechanical stirring, carrying out an oxidation reaction, and filtering for the second time to obtain second waste residues and second produced water; s3, the second produced water is pumped into an adsorption column to be treated, treated electroplating wastewater is obtained, and the adsor