Hi there, clearly the system ...

Hi there, clearly the system is overloaded, with incoming load now more than 65% than original design. This will lead to under aeration as the oxygen demand increases in the process due to the increased load, the installed aerators have a maximum installed oxygen transfer rate. The under aeration will encourage the proliferation of filamentous bacteria that will result in poor sludge settling, leading to sludge carryover that will affect the final effluent quality.

In addition, the hydraulic retention will be compromised, contributing to poorer final effluent quality.

An extension to the existing works will be necessary to improve on the final effluent quality under the current load.

Regards