There is a variety of methods for applying sedimentation and include: horizontal flow, radial flow, inclined plate, ballasted floc and floc blanket sedimentation. Generically, such solids-liquid separation processes are sometimes referred to as clarification processes. Sedimentation is one of several methods for application prior to filtration: other options include dissolved air flotation and some methods of filtration. When sedimentation is applied after coagulation, its purpose is usually to reduce the concentration of solids in suspension so that the subsequent filtration can function most effectively. In water treatment sedimentation might be used to reduce the concentration of particles in suspension before the application of coagulation, to reduce the amount of coagulating chemicals needed, or after coagulation and, possibly, flocculation. When consolidation of sediment, or sludge, is assisted by mechanical means then this is known as thickening. When a thick layer of sediment continues to settle, this is known as consolidation. The particles that settle out from the suspension become sediment, and in water treatment is known as sludge. Sedimentation is the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |