Study on Removal of Low Concentration Phosphate in Wastewater by Al Cross-linked Modified Bentonite

Aiming at low concentration of phosphate-containing wastewater,the modified bentonite was applied to remove phosphate from wastewater in this study.The bentonite was modified by Al cross-linked method and the removal performance of low phosphate concentration by the modified bentonite was studied.The results showed that the removal efficiency of phosphate in the low concentration wastewater was high.The optimum condition for addition of modify bentonite was 1 g/100 mL wastewater,and the stir time was 30 min and the value of pH was 7.