Construction and Installation Archivy

Is it possible to install a WWTP in an old septic tank or cesspit?

Technically, it is possible but in practice it brings more complications than it seems at first glance. In most cases, neither the dimensions nor the material and construction of the original septic tank or cesspit are known. Then it is difficult to calculate the work associated with installing the WWTP in the existing tank. Therefore, we have found that the approach of installing the WWTP next to the existing cesspit or septic tank and then using it for the accumulation of treated water works well.

What material is the Topas WWTP made of and how is it manufactured?

Topas WWTPs are made from polypropylene (PP). This plastic is classified among thermoplastics, meaning it can be joined by melting and welding at appropriate temperatures. The material is stable, non-toxic (the same is used for drinking water pipes) and is only degraded by UV radiation, i.e., sunlight. Since the entire WWTP is buried, aging is minimal and the lid, which is exposed to the most degradation, is made of PP material with a UV filter thus having an extended lifespan even in direct sunlight.

What should be the gradient of the household sewage connection pipe?

Minimum 2-3% for connections. For sewage lines it is then a minimum of 1%.

How long does the installation of the Topas 5 WWTP take?

If everything is prepared, meaning the pit is excavated, a gravel-sand base is ready, machinery is available for lowering the WWTP into the pit and the inlet pipe, electricity, and water for testing are provided, then the installation itself usually takes from 2 to about 4 hours.