Septic tank Carat S

Three chambers septic tank

Septic tanks with partial biological processes are used to extract floating and removable substances. Due to the sizing of 1500 ltrs per inhabitant, the wastewater passes through the system in approx. 10 days. This allows the microorganisms that have emerged in the sludge to effect partial breakdown of the organic waste, in addition to pure mechanical purification (partial biological purification). These septic tanks require 1500 ltrs per inhabitant and must comprise at least 3 chambers.

Two/One chamber septic tank

Floating and removable material is extracted from domestic wastewater in mechanical septic tanks. This is pure mechanical cleaning, for which you need 500 ltrs of capacity per inhabitant. If you assume a volume of 150 ltrs, the wastewater passes through the system in 3 days. These septic tanks must have a total volume of at least 2000 ltrs. A 2000 ltr system is sufficient for 4 inhabitants, another 500 ltrs, must be incorporated for each additional inhabitant.