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 is the flocculation process?
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 flocculation and explain their design?
Flocculation, a gentle mixing stage, increases the particle size from submicroscopic microfloc to visible suspended particles. Microfloc particles collide, causing them to bond to produce larger, visible flocs called pinflocs.
What is flocculation process in water treatment?
Flocculation is a water treatment process where solids form larger clusters, or flocs, to be removed from water. This process can happen spontaneously, or with the help of chemical agents. It is a common method of stormwater treatment, wastewater treatment, and in the purification of drinking water.
What is meaning of flocculated?
to form into flocculent masses. verb (used without object), floc·cu·lat·ed, floc·cu·lat·ing. to form flocculent masses, as a cloud or a chemical precipitate; form aggregated or compound masses of particles.
What is the meaning of a flocculant?
flocculant. / (ˈflɒkjʊlənt) / noun. a substance added to a suspension to enhance aggregation of the suspended particles.
What is flocculation and coagulation?
Coagulation is the destabilization of colloidal particles brought about by the addition of a chemical reagent called as coagulant. Flocculation is the agglomeration of destabilized particles into microfloc and after into bulky floccules which can be settled called floc.
What is flocculation separation?
flocculation, in physical chemistry, separation of solid particles from a liquid to form loose aggregations or soft flakes. These flocculates are easily disrupted, being held together only by a force analogous to the surface tension of a liquid.
What is another word for flocculation?
Flocculation synonyms In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for flocculation, like: gelation, recrystallisation, emulsification, crystallization, sorption, nitrification, solubilization and densification.
What is flocculent material?
floc·cu·lent (flok’yū-lĕnt) 1. Resembling tufts of cotton or wool; denoting a fluid, such as urine, containing numerous shreds or fluffy particles of gray-white or white mucus or other material.
What is flocculation in chemistry?
What is Flocculation? Flocculation meaning is a process that helps in forming large aggregates of particles. For this to occur, a chemical coagulant gets added to the liquid. This coagulant facilitates the bonding of the particles in the liquid.
What is coagulation and flocculation in water?
Coagulation and Flocculation. Groundwater and surface water contain both dissolved and suspended particles. Coagulation and flocculation are used to separate the suspended solids portion from the water. Suspended particles vary in source, charge, particle size, shape, and density.
Why can’t flocs attain equilibrium at small values of G?
It is shown that for small values of G, the flocs cannot attain equilibrium conditions because of the limited residence time. If the concentration would decrease by a factor 10, the shear rate at which equilibrium would be possible, would increase by the same factor. Fig. 4.11.
Can floc size be estimated from flocculation time?
If the flocculation time is large, the mean floc size throughout the water column can be estimated, assuming that the floc size is in equilibrium with near-bed hydrodynamic conditions (i.e. local G and c ). A limited residence time will also have implications on the floc size distribution.