How does a self-anchoring system work?
When installing a self-anchoring tank there is no need to use a concrete anchoring plate thanks
to the specific structure of the Carat S tank. The tank is made by using a casting method from a
special Duralen plastic mixture and the housing is corrugated. Thanks to the corrugated surface,
the area of the housing is multiplied and the weight of the ground imposed on this area is so big
that it exceeds vertical pressure generated by groundwater even when the tank is empty. The
tests carried out by the manufacturer allow the highest groundwater level to reach the upper
edge of the cylindrical part of the tank. This is because the seals in the well are not designed to
prevent water coming from the outside for an extended period.

Operating principle
One2Clean+ needs three treatment steps. Two treatment cycles per 24 hours. Wastewater
treatment – wastewater arrives directly in the treatment chamber by the force of gravity. At
the same time the air fan is operating, air is pumped into the tank and, with the help of fine
bubbles, the wastewater is bound with oxygen.
The micro-organism begins the biological cleaning process without delay. Setting phase –
aeration is interrupted by the control unit and the activated sludge sinks to the bottom of the
tank. Cleaned water rises to the upper part of the tank. In order to reduce the risk of mixing the
treated water with wastewater due to the flow of water in the setting phase, the setting phases
are planned to a time period when the probability of flow is less. Clean water extraction phase
– the treated clean water is pumped into the receiving body and the cleaning process can start
from the beginning.