Floating and removable material is extracted from domestic wastewater in mechanical septic tanks. This is pure mechanical cleaning, for which you need 500 l of capacity per inhabitant. If you assume a volume of 150 l, the wastewater passes through the system in 3 days. These septic tanks must have a total volume of at least 2,000 l. A 2,000 l system is sufficient for 4 inhabitants, another 500 l, must be incorporated for each additional inhabitant.
- Low weight: can also be installed in difficult local conditions without a crane
- Reasonable purchase and installation costs. Compare!
- Low maintenance: maintenance or cleaning work can be performed through the shafts
- Tanks can be used as rainwater harvesting systems after thorough cleaning
