The Sewage Treatment Plant

The sewage treatment plant process is known to be the most environmentally friendly because it basically encourages the growth of bacteria to break down sewage by circulating air through the system to produce a much cleaner effluent.

This process isn’t seen as too dissimilar to the septic tank, but there are some key differences to both systems which set them apart from their predecessor, the Cesspit.

Depending on the size of the treatment plant, they can commonly treat large commercial properties or a number of domestic dwellings.

Not too dissimilar to the septic tank, a sewage treatment plant collects sewage from a property into its first of three chambers. It stays here until the solids have settled to the bottom and grease, oil and scum have floated to the top.

Once this separation process has taken place the liquids (or liquor) travel into the second chamber where the air pump is activated and the bacteria is encouraged to breakdown the contaminants in the water.

Finally, the third tank allows the remaining solids to sink to the bottom while the effluent is discharged into the soakaway. It is important that the process is complete before it is discharged into the environment.

The core benefit of a sewage treatment plant is that the system only needs to be emptied around once a year. This being said, there is an added financial cost for the air pump and the electricity it uses to complete the process. This is estimated to cost anywhere from £150 – £250 a year.

A sewage treatment plants tank range in size, see below:

  • 1000 Gallons / 4500 Litres
  • 2000 Gallons / 9000 Litres
  • 3000 Gallons / 13500 Litres
  • 4000 Gallons / 18000 Litres

If you would like to find out any more about our sewage treatment plant services, please click here to fill out one of our contact forms

Drainage and wet waste specialists

Room F1, Captain Superintendents Building, Admiralty Way, The Dockyard, Pembroke Dock SA72 6TD.
01646 629089