Flocculation: Physical processes such as mixing is used as a technique in flocculation. 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. Main Difference – Flocculation vs Precipitation. On the other hand, during flocculation, the solution is mixed gently, so that the small clumps formed during coagulation, gather together and form larger clumps. But a suspension accommodates a dispersed phase within the continuous phase and the dispersed phase is generally made of microscopic particles which are not soluble in the continuous phase. 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. In potable water treatment, clarification of water using coagulating agents has been practiced from ancient times. This is achieved by adding a coagulant that possesses an opposite charge to that of the suspended solids. There are three steps: 1. Available here, 1.’The coagulation and filtration processes at a drinking water treatment plant. What is a Coagulation      – Definition, Application, 3. 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. Coagulation involves the use of a coagulant which has the potential to de-stabilize the previously stabilized charged particles in the suspension. Thus, in terms of water treatment, both can be differentiated easily. Terms of Use and Privacy Policy: Legal. Coagulation is a process of making colloidal matter dispersed/suspended in a liquid to join in a coherent mass. This enables their removal by sedi-mentation, dissolved air flotation or filtration. Coagulants include inorganic salts of aluminum or iron. On the other hand, flocculation means to form flocs. 1. This allows the bridging and strengthening the floc which increases the weight of floc while also increasing the rate of settling. This knowledge will provide a basis for understanding the needs of the During the flocculation procedure, the solution which is coagulated already is mixed gently. There are three steps: 1. But there are differences between the two terms. Coagulation and flocculation steps are important aspects in the context of water treatment since it allows the separation of suspended particles present in water effectively. Flocculation is synonymous with agglomeration and coagulation / coalescence. Coagulation and Flocculation. Flocculation involves the formation of flocs. 1 CE 370 Coagulation and Flocculation Part 2 Rapid Mixing and Flocculation ¾Rapid mixing is used to: −Disperse chemicals uniformly throughout the mixing basin −Allow adequate contact between the coagulant and particles −Microflocs are produced ¾Flocculation is … In flocculation, the de-stabilization of the suspension is more or less a result of physical processes rather than chemical. These are also referred to as coagulant aids. Large, heavy particles settle out readily, but smaller and lighter particles settle very slowly or in some cases do not settle at all. Coagulation involves the use of a coagulant which has the potential to de-stabilize the previously stabilized charged particles in the suspension. Basically, coagulation is a process of addition of coagulant to destabilize a stabilized charged particle. These anti-coagulants are often used to ease blood clots to prevent artery blockage. The effects of a coagulant can be reversed by the use of an anti-coagulant. What is Flocculation in Water Treatment Once flocculation is completed, the water is eligible to undergo separation processes. This is mainly achieved through the physical and mechanical process that is involved with the already coagulated clumps to join together. FLOCCULATION • Process where colloids come out of suspension in the form of floc or flake • Due to : 1.the addition of a clarifying agent 2.spontaneously • Occur in successive steps intended to overcome the forces • Stabilizes the suspended particles, allowing particle collision and growth of floc. 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