Hydrodynamic treatment device

摘要

A hydrodynamic treatment device comprises a vessel 2 within which is disposed an inner partition 24. The inner partition 24 divides the interior of the vessel 2 into outer and inner regions 22, 28. Flow enters the vessel 2 through a tangentially oriented inlet 14 and establishes a complex circulating flow within the vessel 2. Settleable solids migrate to the bottom of the vessel 2 and are deposited in a sump 20 through a solids outlet opening 18. Flow enters the inner region 28 through apertures 34 in the inner partition 24, and is discharged through an outlet duct 8. The inner region 28 is closed at its lower end by a frusto-conical, downwardly diverging lower wall 30 which projects outwardly from a central cylindrical wall 26.