Without access to the sewage system, we consider storing sewage in a septic tank - the so-called septic tank or local treatment in a household sewage treatment plant.
Types of sewage treatment plants:
The above division is a major simplification, because each type of sewage treatment plant has a biological treatment stage, but this has been accepted on the market.
The purification processes are divided into two stages:
All stages take place both in drainage, biological and plant sewage treatment plants. Another variant is the division of the so-called biological treatment plants, among which we distinguish: