From different sources, the retention percentages are obtained, both the minimum and the maximum of sediments, nitrogen, and phosphorus for each of the processes that are carried out both in the collection and in the water treatment. The predefined percentage shown in the tables is taken as the average of the minimum and maximum percentages.
As can be seen in the tables in some processes, such as pumping, all removal efficiencies are zero, because this process does not retain sediments, nitrogen or phosphorus.
Removal efficiency in the intake related processes:
