It can be seen that during operation
TP concentration was fluctuated. However, after startup
the performance of phosphorus release in the system started
to improve.
Generally bulk liquid TP concentrations increasing
with high stability were achieved.
The organic matter concentrations in the supernatant zone
(above anaerobic zone in thickener) were monitored to evaluate
the behavior of microorganisms under the anaerobic zone
and study the effectiveness of phosphorus release operation
from microorganism cells on consumption rate of carbon
source from bulk liquid for biodegradation of phosphorus
inside cells to achieve the releasing operation of phosphorus
as an orthophosphate into bulk liquid.