Optimization of sand trap and settler designs for efficient deposition of suspended sediment.
- 19th International Conference on Transport and Sedimentation of Solid Particles. , TS (19) : 301-310
Résumé
Sediment traps are structures designed to allow the suspended sediment load, which enters river abstraction works or diversion canals, to deposit whilst relatively clean water passes through. The deposited sediment is then removed by making use of gravitational flushing. The sediment traps discussed in this paper are settlers and sand traps. The focus in this paper will be on optimizing the design of settlers and sand traps to propose a set of design guidelines for use in South Africa. This is done by investigating existing sediment traps within Southern Africa as well as numerically investigating some of the design properties of settlers and sand traps. A new concept of a sediment trap is also numerically investigated as a possible design.
Mots-clés
Sand trap, settler, settling velocity, settling length, numerical models, CFD