Suspended bacteria fluid-2 h

Suspended bacteria fluid-5 h

Immobilized bacteria spheres-4 h

Immobilized bacteria spheres-8 h

Removal rate of ammonia-nitrogen

32.67%

73.48%

1.97%

5.75%

Removal rate of total phosphorus

−18.28%

−19.62%

9.70%

11.64%