In this study, new porous waste lime support carriers were developed and their removal efficiency of nutrient from wastewater in the biological aeration reactor was investigated. The effect of waste lime addition on the phosphate removal efficiency was investigated and the optimal waste lime concentration was found to be 8 g/L for 100 mg/L of PO4-P solution. Cubic support carriers were prepared in the following order; mixing waste lime with curdlan solution, decreasing pH from 12 to 7, heating the samples at 120 ℃ for 30 min, and finally, dehydrating the samples at - 70 ℃ for 48 hrs. When the volume percentage of the waste lime carriers increased from 10% to 30%, the removal efficiency of nitrogen significantly increased from 60% to 88%, and that of phosphate from 10% to 88%. These results indicate that the application of this new waste lime support carrier for wastewater treatment in very promising.