Septic tanks

Septic tanks

A septic tank is an underground plastic tank that collects wastewater and sewage water from houses and other buildings. In the individual chambers, which are formed by separating partitions, mechanical-biological treatment of wastewater takes place. 

In the first chamber, the solid parts of the waste remain, which settle to the bottom and gradually decompose. The roughly purified water flows into a second chamber where the process of decomposition continues. The third chamber receives only purified water that is free of solid particles.

This treated water is then discharged into surface water (stream or river) or through the soil layers into groundwater.

Septic tanks can be used for family houses, cottages and holiday homes in places where it is not possible to connect to the municipal sewerage system. They can also be used in places where the legislation allows the collection of treated wastewater.

If you do not know which type of tank is best for you, we will be happy to help you with your choice.

As standard, septic tanks are supplied with a Ø 800 mm inlet chimney and two hatches, the inner hatch being vapour-tight. Ø 160 inflow and outflow from pipe HT. 

We make the tanks in two variants:

  • Cylindrical
  • Rectangular

For each of these variants we offer 3 types of design:

  • Self-supporting

Designed to be excavated on a concrete slab base, backfilled with soil, sloping.

  • Unsupported

Designed to be excavated on a concrete base slab, concreted into a running surface or in areas with groundwater or clay subsoil.

  • Twintube

The design combines the advantages of plastic and concrete. At the same time, it is also a carrier for the reinforcement of the future concrete in the intermediate slab. The plastic walls perfectly protect the concrete structure against the aggressiveness of sewage and groundwater.
The tank thus acquires the static properties of concrete tanks – load-bearing capacity and resistance to soil pressure and loads from rolling stock.

Photo gallery of septic tank realisations

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