In the study, lab tests are carried out firstly. The specific objectives of lab test are (1) to determine the effects on pH, SS, chroma and concentration of Fe2þ of effluent with different dosage of NaOH and aeration time, (2) to determine the effects on iron oxide red product obtained by the new method (factors as temperature, reaction time and aeration) and acquire the optimal process parameters and (3) to explore whether properties of the iron oxide red product by the new method meet requirements of relevant industrial standards.