| 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% |