The Tricel Septic Tank System is suitable for sewage treatment where sufficient land is available for an adequate drainage
field and approval is received from planning authorities.
Designed in accordance with BS 6297:1983 and constructed from hot pressed grp (glass reinforced plastic),
the tank is divided into two compartments.
Waste water flows by gravity into Chamber 1, where the solids and heavier material settle to the base of the unit.
A small amount of anaerobic breakdown occurs at this stage. The liquid along with the lighter waste material flow over
the baffle into the second chamber. A layer of scum forms at the top of the liquid. A specially designed outlet pipe is
fitted to the unit to ensure that only the liquid flows into the percolation area. This dip pipe prevents the scum from
passing into the percolation area which may block pipes.
Final improvement of the waste water occurs as it penetrates through a specially desinged percolation area.
As the majority of treatment occurs in the percolation area, a percolation test should be undertaken to determine the
composition of the drainage area. The test results also determines the drainage area and the length of percolation
trenches required. The waste flows by gravity into a distribution chamber which evenly disperses the liquid between the
percolation pipes. To ensure even distribution, it is important percolation pipes have a uniform gradient and constructed
in a loop format.
