Phosphorus recovery from industrial wastewater is an important route for alleviating phosphorus resource depletion and reducing eutrophication risk. Acidified oil wastewater generated during vegetable oil refining is characterized by strong acidity, high organic load, and high phosphorus content, making conventional treatment both costly and chemically intensive. Herein, an Fe-C micro-electrolysis process was developed to achieve phosphorus recovery from acidified oil wastewater through in situ