Typically, sewage is fed into and stored in a wet well. When the level of the sewage rises to a predetermined point, a pump will be activated via integral level control, to lift the sewage under pressure through a discharge pipe system from where it is received into a gravity sewer manhole.
The level is monitored by level control equipment, this could be via a float switch or liquid level sensor. A float switch monitors the liquid level by floating on the top of the liquid present, an internal micro switch will turn the effluent pump station on and off when it has been moved by the liquid to the on/off switching point.
Once the pumps are switched on, they will pump the liquid through the pipework to a gravity sewer.