Difference Between Coagulation and Flocculation Ppt

Coagulation is a process to neutralize charges and then to form a gelatinous mass to trap or bridge particles thus forming a mass large enough to settle or be trapped in the filter. Aggregation based on reducing inter-particle repulsion forces is known as coagulation and the aggregates are called coagula.

Coagulation And Flocculation Ppt Download Water Treatment Brownian Motion Macromolecules

Difference between Coagulation and Flocculation.

. When aggregation is achieved as a result of the action of an. These particles form clumps with the help of a coagulant. Flocculation takes the coagulation process a step further by gently agitating the microfloc-containing water at varying speeds to encourage more particle adhesion.

Figures 319 and 320 illustrate the layout of a water treatment plant with coagulation flocculation and sedimentation tanks. The PowerPoint PPT presentation. If coagulation is incomplete flocculation step will be unsuccessful and if flocculation is incomplete.

It basically refers to a chemical process in which the destabilization of non-settleable particles takes place. The final step is flocculation. Dirt particles in the water then stick together or coagulate and continue to stick together until heavy particles.

During flocculation a process of gentle mixing brings the fine particles formed by coagulation into contact with each other. Precipitation has many applications in both laboratory scale and industrial scale. Types of Water Treatment Processes Coagulation or Flocculation In this process liquid aluminum sulphate or polymer is added to water.

After coagulation the destabilized particles can collide aggregate so flocs can be formed. Coagulation is a chemical process and flocculation is a physical process In coagulation the process involves the utilization of a coagulant that has the ability to destabilize the charged particles which are not settleable whilst flocculation involves a similar destabilization process that is achieved through physical mixing and by adding organic polymers. Flocculants are used in water treatment processes to improve the sedimentation or filterability of small particles.

But there are differences between the two terms. The coagulate which is frequently a salt decomposes to release charges. There are four main mechanisms for coagulation.

There are three steps. Coagulation and flocculation occurs in successive steps allowing particle collision and growth of floc. The process of flocculation is a physical one.

Coagulation and Flocculation LOKESH SAINI MTech-Ist Semester Student ID 2015PCE5271 3312016 1 2. Ppt coagulation and flocculation 1. Coagulation is the neutralization of the electronic charge on suspended particles.

This is the key difference between coagulation and. During Flocculation the solution is mixed gently providing time and energy so the clumps will gather together and form larger clumps. If coagulation is induced by a polymer-bridging action the process is called flocculation and the aggregates are called flocs.

This is then followed by sedimentation see Sedimentation Chapter. On the other hand flocculation means to form flocs. In flocculation one can make a distinction between perikinetic and.

See Figures 317 and 318. The process of Coagulation is a chemical one. Overview of coagulation and flocculation 1 11.

Particles in water such as clay usually have a negative charge. This step is called flocculation. Flocculation Process The flocculation process takes treated water from the coagulation stage and mixes it slowly to increase the collision rate between suspended microfloc particles.

Do you have PowerPoint slides to share. Coagulation the coagulant chemicals neutralize the electrical charges of the fine particles in the water allowing the particles to come closer together and form large clumps. The main difference between flocculation and precipitation is that flocculation forms floccules whereas.

Coagulation is the step where colloidal par ticles similar t o spheres of a diameter of less than 1 micrometer are destabilized. Flocculation allows forming floc in quiescence slow. The flocculant is usually a polymer that causes particles to settle and gradually expand into larger flakes.

Flocculants flocculating agents - Also known as flocking agents - Chemicals that promote flocculation by causing colloids and other suspended particles in liquids to aggregate forming a floc. Another type of tanks combine between flocculation and sedimentation in one tank and called solid contact Flocculator Clarifier. The process of agglomeration of the destabilized particles to such a size that separation by sedimentation and filtration is possible.

Clump together and settle out of the water unless proper coagulation and flocculation is used. Coagulation and Flocculation in Water Treatment is the property of its rightful owner. During coagulation the coagulant alum are added to destabilize the surface charge of particles in order to promote the formation of microflocs during the collision.

CoagulationFlocculationPhysical Removal Designed to remove Microorganisms Toxic compounds that are sorbed to particles NOM because it is a precursor of DBPs Designed to make the water more palatable Coagulant properties Non-toxic and relatively inexpensive Insoluble in neutral pH range - do not want high concentrations of metals left in treated water. Theres a difference between coagulation and flocculation and the mechanism that causes particles to aggregate and come together so that they can be filtered or settled. Coagulation comes from the latin word coagulare which means to agglomerate.

Double layer compression adsorption and charge neutralization sweep flocculation and inter-particle bridging. How the Difference Between Hot and Cold Explains the Universe Paul Sen 455 Free. Coagulation means to curdle.

Basic principle of coagulation. Coagulation is the destabilization of colloids by addition of chemicals that neutralize the negative charges The chemicals are known as coagulants usually higher valence cationic salts Al3 Fe3 etc Coagulation is essentially a chemical process - - - - - - - - - - - - - - - - - - - - - - - - - - - - water treatment What is Flocculation. Sweep flocculation is the primary.

Flocculation is gentle stirring or agitation to encourage. The key difference between coagulation and flocculation in water treatment is that the coagulation is a chemical process while flocculation is a physical process. First process in drinking water treatment coagulation is to destabilize the particles and allow them the potential to collide and stick together.

Coagulation involves the use of a coagulant which has the potential to de-stabilize the previously stabilized charged particles in the suspension. In contrast in flocculation the de-stabilization is brought about by physical techniques such as mixing of the solution and also sometimes by the addition of polymers. Flocculation is used in water treatment plants along with coagulation techniques in order to remove suspended particles in water.

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