Septic Tanks

A Septic Tank is a multi-chamber storage tank allowing liquid and solid waste to separate: The liquid is allowed to flow out of the tank and be disposed of separately.

Firstly the sewage enters a settlement chamber, allowing solid waste (sludge) to sink and the liquid to rise to the surface. The surface liquid makes contact with oxygen and the organic matter starts to breakdown biologically. This liquid still contains sewage but in small enough particles to be carried through the discharge outlet and into the ground (soakaway).

Septic Tanks only partially treat sewage, and the treated is often low quality and smelly. Many areas of the UK and Ireland prohibit the installation of Septic Tanks and recommend a Sewage Treatment Plant instead. 


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