The effects of such variable uptakes on the nutrient removal
efficiency are presented in Fig. 6. 73.07 ± 0.61% N and
59.27 ± 4.12% P were removed at high nitrogen and phosphorus
levels (experiment Nh-Ph). As the initial N-NO3
concentration
was reduced with high P-PO4
3 levels, the N-removal efficiency
increased (97.11 ± 2.65% for Nm-Ph and 83.57 ± 17.55% for Nl-Ph).
The decline in the efficiency for Nl-Ph was due to very high initial