Effluent Pump-Out Systems (Bull. 9-20.B.1)


Function

AFL effluent pump-out systems provide automated discharge of water from the outlet chamber of a separator. The transfer may be to a sewer system, waterway, drainage ditch or storage. Pump-out will be necessary when positioning of the separator in the installation will not permit gravity discharge of the effluent.

In operation, a level control regulates effluent discharge. When the liquid in the outlet chamber reaches a predetermined height, the level controls starts the pump. The pump continues to operate until the effluent level is about 6 to 8 inches from the bottom. Then the level control stops the pump until the outlet chamber refills- after which the process repeats itself.

In a duplex system, the outlet chamber is supplied with two pumps. A second pump permits:

  1. Alternate operation to double the life of a single pump.
  2. One pump to serve as standby in the event of failure of the other.
  3. Extra pumping capacity to handle flows exceeding the rating of the separator and single pump.

Should the pump(s) fail and the level of the effluent exceed a predetermined height, a high level alarm alerts nearby personnel. If the installation is in an unattended area, the annunciator (light or buzzer), may be located remotely at a manned control panel.

Factory built and installed pump-out systems provide the most functional, cost-effective and dependable means of transferring effluent.