To resolve problems with the traditional air oxidation process for producing yellow iron oxide pigments, an integration of bipolar membrane electrodialysis (BMED) with the air oxidation process was proposed. Before the integration, both the individual air oxidation process and the BMED process were investigated. The matching conditions for the integration were found to be as follows: pH = 2.5-2.8, FeSO4 concentration = 50-75 g FeSO4 center dot 7H(2)O/L, current density = 60 mA/cm(2), distilled water flow rate = 0.3 L/h, etc., under which all the products generated were qualified as the same as those of the individual production process. In addition, economic evaluation of the integration was conducted. Even though the process cost is not as low as expected, it can achieve "zero waste discharge" because the produced inorganic base can be directly used in the air oxidation process and the cogenerated acid can be used in pickling industries. In conclusion, the integration is a feasible, effective, and environmentally friendly process.