We have designed an outfall with pumps well above sea level. When the pumps stop the sewage level drops to sea level. That cannot be changed.
Normally the pumps would be started slowly to allow the air to back up and release through an air valve close to the pumps.
The client wants to start the pumps at full rate which will trap the air and force it out through the offshore end of the Outfall.
The question is how do I calculate the flow rate required to carry the air down the outfall and out through the diffuser?
Stephen A
Normally the pumps would be started slowly to allow the air to back up and release through an air valve close to the pumps.
The client wants to start the pumps at full rate which will trap the air and force it out through the offshore end of the Outfall.
The question is how do I calculate the flow rate required to carry the air down the outfall and out through the diffuser?
Stephen A