NA-06 - Cleaning: Design Measures to Avoid Deposits
Decentralised solid retention
Decentralised solid retention includes “measures for the retention of solids in the place of their formation before the sewage is fed into the sewage system”.
In the opinion of many authors ([Grott1991] [Giesl1997] [Kraut2000] [Stotz1998] [Somme2004a] [Somme2004] [Fraen2005] [Hilli2005] [SteinR05]) the runoff entering the sewage system from the surface via catch basins is the main source of mineral solids resulting in the formation of deposits in the sewer system.