Waste Water Treatment
Small-scale WWTP units hold significant importance in regions with low population density, particularly where the economic feasibility of channeling sewage to a central WWTP via a drainage system is unviable.
Building extensive drainage conduits is impractical for two main reasons: exorbitant expenses and the risk of wastewater stagnation.
According to the Council Directive 91/271/EEC regarding urban wastewater treatment, in cases where the establishment of wastewater collection systems lacks economic or environmental justification, individual systems are recommended.