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Eco Systems

Septic Tank - How does it work

A septic system consists of two major components: a septic tank and a drain field. Pipelife's Septic Tanks incorporate 2, 3 or 4 chambers. The chambers are separated by a dividing wall, which has openings located roughly midway between the bottom and top of the tank.

Wastewater enters the first chamber of the tank through an inlet hole. The chamber is designed to allow heavy solids to settle at the bottom, where they are anaerobically digested. This way the volume of solids is reduced and forms sludge. Meanwhile, grease and light particles float on top and form a layer of scum. Filters, installed at the inlet and outlet of the tank, prevent scum and solids from escaping. Afterwards, wastewater flows into the following chamber where further settlement takes place. Purified wastewater then drains from the outlet of the tank into the drain field.

The wastewater them flows to a distribution box where it is channelled into one or more perforated pipes laid in trenches of gravel. The water slowly filters into the underlying soil. The remaining impurities decompose in the soil, while the purified water is eventually taken up by the plants roots or continues into the groundwater and restarts its natural cycle.

Eco Pipelife has designed a perfect solution for situations when there is not enough space to set up a system of trenches. Pipelife Compact Cassettes occupy very little space and provide effective filtration of purified water into the ground.

Chamber 1: Waste water comes into chameber 1, where heavy particles fall to the bottom of the tank and light ones raise to the surface, thanks to the long separating distance. Most of the solid waste will remain in this chamber.

Chamber 2: Clarified waste water comes through the middle hole in the partition wall. Some of the sludge, which has fallen to the bottom, goes to the same chamber through a lower hole, and this gives the system additional space for the sludge so you can empty it less frequently.

Chamber 3: Water, which has been further purified, comes to the last separating chamber from beneath the partition wall. From this chamber the purest middle-layer water is led through a distribution well to the absorption pipes, where microbes eat dissolved nutrients.