AbflussSystem

AbflussSystem is a term used to describe the system responsible for collecting, transporting, and discharging wastewater and stormwater from buildings and connected properties. It includes interior and exterior components, such as pipelines, fittings, traps, cleanouts, venting elements, backflow preventers, pumps, and inspection shafts. The goal is to ensure safe, hygienic removal of waste water while preventing sewer gases and backflow.

The system comprises various components and materials. Interior drainage typically uses pipes made of PVC, PVC-U, or cast iron, connected by fittings and sealed to prevent leaks. Traps (Fallen) maintain water seals to block sewer gases. Vent pipes provide airflow to prevent siphoning and excessive pressure. Cleanouts allow access for inspection and cleaning. Exterior sections may include larger-diameter pipes, manholes, stormwater channels, and, where necessary, pumping stations or sump basins to move water from lower to higher elevations.

Operation and design principles focus on gravity-driven flow, appropriate slope, and venting. Horizontal piping generally requires a continuous, adequate fall to ensure waste is transported without stagnation. Proper venting prevents trap siphonage, while appropriate pipe diameters and cleanouts facilitate maintenance. In mixed systems, clear separation of sanitary wastewater from stormwater is common to prevent overload of sewer networks.

Applications and standards vary by country. Typical systems serve buildings, courtyards, and outdoor areas, incorporating components to handle normal wastewater and rainfall runoff, with considerations for backflow protection and accessibility for inspection. Maintenance tasks include removing blockages, inspecting seals, and testing for leaks, ensuring long-term reliability and compliance with local regulations.