What is flocculation equilibrium?
What is flocculation equilibrium?
EQUILIBRIUM IN FLOCCULATED SYSTEMS (1) As previous investigations (2-4) indicated, the flocculation of suspen- sions by polymers is caused by the adsorption of polymer molecules which bind the particles together. According to this simple hypothesis, flocculation occurs by a crosslinking mechanism.
What does flocculation mean in chemistry?
4 Flocculation. Flocculation is a process by which a chemical coagulant added to the water acts to facilitate bonding between particles, creating larger aggregates which are easier to separate. The method is widely used in water treatment plants and can also be applied to sample processing for monitoring applications.
What is difference between coagulation and flocculation?
Coagulation and flocculation are two separate processes, used in succession, to overcome the forces stabilising the suspended particles. While coagulation neutralises the charges on the particles, flocculation enables them to bind together, making them bigger, so that they can be more easily separated from the liquid.
What are flocculated and Deflocculated suspension?
Definition. Flocculated Suspension: A flocculated suspension is a suspension in which particles have undergone flocculation. Deflocculated Suspension: A deflocculated suspension is a suspension where no flocculation has taken place.
What is meant by flocculated suspension?
Flocculation is a process whereby small particles in suspension are caused to aggregate, giving large clusters (flocs) that are much more easily separated than the original particles. The process is in widespread use in many industrial applications.
What is the purpose of flocculation?
As with coagulation, the purpose of flocculation is not to directly reduce turbidity or suspended solids, but to prepare the solids for subsequent removal. Flocculation reduces the number of suspended solids particles as smaller particles combine to form larger ones.
Is flocculation the same as precipitation?
Flocculation is the process of formation of solid aggregates from small particles. Precipitation is the process of formation of an insoluble solid mass. The main difference between flocculation and precipitation is that flocculation forms floccules whereas precipitation forms precipitates.
What is the difference between flocculation and precipitation?
What is the difference between Floculant and coagulant?
Coagulation is a chemical process. Flocculation is a physical process. Coagulants such as inorganic salts of aluminum or iron that neutralize the suspended particles are added during coagulation. Flocculant such as an organic polymer that involves in bridging and strengthening the flocs is added.
What causes flocculation?
In dispersed clay slurries, flocculation occurs after mechanical agitation ceases and the dispersed clay platelets spontaneously form flocs because of attractions between negative face charges and positive edge charges.
What is sedimentation process?
Sedimentation is the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity. The particles that settle out from the suspension become sediment, and in water treatment is known as sludge.