Coagulation and Flocculation LOKESH SAINI M.Tech-I´st Semester Student ID 2015PCE5271 3/31/2016 1 2. This article provides an overview of the processes and looks at the latest thinking. Coagulation / Flocculation Physical and chemical processes to induce collisions and growth of particles, and to remove some soluble contaminants Coagulation: Formally, means making particles “sticky” (rapid mix step); colloquially, also refers to forming new particles that collect dissolved contaminants Flocculation: Causing … See our User Agreement and Privacy Policy. C. Coagulation and flocculation Controlling corrosion: Dissolved oxygen and carbon dioxide which contribute to corrosion can be removed by de-aeration (e.g., through heating water). See our Privacy Policy and User Agreement for details. Phosphoric acid – flocculating agent in scp process. PPTs online, safely and virus-free! If you continue browsing the site, you agree to the use of cookies on this website. There are two modes of particle-particle … • Flocculation: is the slow mixing technique which promotes the agglomeration of the stabilized particles. Looks like you’ve clipped this slide to already. Environmental Engineering-I. If you continue browsing the site, you agree to the use of cookies on this website. FLOCCULATION Depends on: choice of additive, dosage, and conditions for floc formation. Overview of Zeta Potential Concept, Measurement Use, and Applications, No public clipboards found for this slide. Sedimentation Flocculation Coagulation Coagulation and Flocculation Coagulation and flocculationconsist of adding a floc-forming chemical reagent to a water to enmesh or combine with nonsettleable colloidal solids and slow-settling suspended solids to produce a rapid-settling floc. After coagulation the destabilized particles can collide, aggregate so flocs can be formed. • The final step is flocculation. Material for this article was largely taken from reference1.Coagulation and flocculation are essential processes in various disciplines. This is then followed by sedimentation (see Sedimentation Chapter). 5/3/2012. clump together and settle out of the water, unless proper coagulation and flocculation is used. During flocculation, a process of gentle mixing brings the fine particles formed by coagulation into contact with each … Coagulation and flocculation are two processes commonly used in water treatment in order to get rid of unwanted suspended material in water. Overview of coagulation and flocculation 1 1.1. Many water treatment plants use a combination of coagulation, sedimentation, filtration and disinfection to provide clean, safe drinking water to the public. 3/31/2016 2 Why coagulation and flocculation? Environmental Engineering-I (Water Supply Engg.) Coagulation and flocculation occurs in successive steps, allowing particle collision and growth of floc. L-17 Coagulation and Flocculation Part-I Polyelectrolytes: act by charge neutralization and hydrophobic interaction to link cells to each other. Coagulation-Flocculation •In conventional coagulation-flocculation- sedimentation, a coagulant is added to the source water to create an attraction among the suspended particles. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Student ID 2015PCE5271 Dirt particles in the water then stick together or coagulate and continue to stick together until heavy particles are formed. Flocculation: The process of agglomeration of the destabilized particles to such a size that separation by sedimentation and filtration is possible. M.Tech-I´st Semester It involves the reduction of surface charges responsible for particle repulsions. Actions. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. These heavy dirt particles are called flocs. Coagulation … If you continue browsing the site, you agree to the use of cookies on this website. PPT – Coagulation and Flocculation in Water Treatment PowerPoint presentation | free to download - id: 6e7d4a-ZjYxM. The net resultant force is attractive out of the distance x. Source: Coagulation and Flocculation of Wastewater in Textile Industry using … Learn new and interesting things. View Coagulation Flocculation. Coagulation and Flocculation Flocculation Prismita Nursetyowati. Now customize the name of a clipboard to store your clips. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Get the plugin now. Coagulation and Flocculation in Water Treatment. Now customize the name of a clipboard to store your clips. Coagulation: Coagulation is the step where colloidal par ticles (similar t o spheres of a diameter of less than 1 micrometer) are destabilized. Flocculation basins are used to promote growth of the destabilized floc by promoting particle-particle contact. LOKESH SAINI 1. Ppt coagulation and flocculation 1. 04/27/16 water treatment 36 37. Coagulation, Flocculation, and Sedimentation Subject Area(s) Environmental Systems, Chemistry Associated Unit Drinking Water Treatment Process Lesson Title Drinking Water Treatment: Coagulation, Flocculation, and Sedimentation Header Grade Level 10 (9-12) Lesson # 2 of 3 Lesson Dependency Lessons: 1. In potable water treatment, clarification of water using coagulating agents has bee… You can change your ad preferences anytime. Aesthetics and health Colloids impart color and turbidity to water aesthetical acceptability Microbes are colloids too water treatment 2. Worldwide, a combination of coagulation, sedimentation and filtration is the most widely applied water treatment technology, and has been used since the … Coagulation and Flocculation In coagulation operations, a chemical substance is added to an organic colloidal suspension to cause its destabilization by the reduction of forces that keep them apart. This step is called flocculation. 3/31/2016 1. An operator cannot just set a dose and “hope” everything works out. Water quality can change frequently and operators must ensure they are on top of changing conditions. - TE (CIVIL) Course material by PROF S S JAHAGIRDAR, NKOCET, SOLAPUR. of Engineering & Tech.. Coagulation and Flocculation Dr Zuhaib Siddiqui Hamilton Water Treatment Plant Has a rated capacity of Coagulation Flocculation - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Because of this, the sedimentation step is usually preceded by a chemical process known as coagulation. Coagulation and Flocculation The Figure 8.4 shows the interparticulate forces acting on a colloidal particle. Get ideas for your own presentations. Effective agents: Mineral colloids and polyelectrolytes. Basic introduction of equipments used in dairy industry, No public clipboards found for this slide. The floc is subsequently … Flocculation Rapid mix (coagulation ) is followed by flocculation where there is slow, enhanced contact between destabilized (coagulated) particles. The repulsive forces are due to the electrostatic ZP The attractive forces are due to van der Waals forces acting between the particles. 1.1.1. Beyond this point the net … Remove this presentation Flag as Inappropriate I Don't Like This I like this Remember as a Favorite. Large, heavy particles settle out readily, but smaller and lighter particles settle very slowly or in some cases do not settle at all. Basic principle of coagulation: Coagulation comes from the latin word ˙ coagulare ¨ which means ˙ to agglomerate ¨. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. You can change your ad preferences anytime. Chemical additives like sodium hydroxide and sodium hexametaphosphate (SHMP) may be added to water to reduce corrosion. This reduction in charge causes flocculation … Clipping is a handy way to collect important slides you want to go back to later. Water supply system - Water supply system - Coagulation and flocculation: Suspended particles cannot be removed completely by plain settling. Many are downloadable. 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. See our Privacy Policy and User Agreement for details. 5/3/2012 04/27/16 water treatment 37 Slide 13 of 27 38. Looks like you’ve clipped this slide to already. Main Difference – Coagulation vs Flocculation. •The mixture is slowly stirred to induce particles to clump together into “flocs.” •The water is then moved into a quiet sedimentation … View 6 Coagulation_Flocculation (1).ppt from CIVIL GI EN at NED Univ. J(Hans) van Leeuwen. A jar test simulates the coagulation and flocculation processes Fill the jars with raw water sample (500 or 1000 mL) – usually 6 jars Adjust pH of the jars while mixing using H 2 SO 4 or NaOH/lime (pH: 5.0; 5.5; 6.0; 6.5; 7.0; 7.5) Add same dose of the selected coagulant (alum or iron) to each jar water treatment Introduction The need to clarify water. 1. Share yours for free! Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Water Treatment Companies in UAE - Types of Water Treatment Processes Coagulation or Flocculation In this process, liquid aluminum sulphate or polymer is added to water. Clipping is a handy way to collect important slides you want to go back to later. If coagulation is incomplete, flocculation step will be … Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Process Description Coagulation and. Coagulation and flocculation are an essential part of drinking water treatment as well as wastewater treatment. If you continue browsing the site, you agree to the use of cookies on this website. Differences • Coagulation: is a chemical technique which is directed towards the destabilization of the charged colloidal particles. Academia.edu is a platform for academics to share research papers. Types of Water Treatment Processes Coagulation or Flocculation In this process, liquid aluminum sulphate or polymer is added to water. This knowledge will provide a basis for … Dirt particles in the water then stick together or coagulate and continue to stick together until heavy particles are formed. In flocculation one can make a distinction between … However, they can be commonly adopted for de-stabilizing any suspension system. Topics of Discussion • The place of flocculation within a water treatment process • The use of coagulation and flocculation in the water industry • Softening • Separation of flocs by settling and flotation 04/27/16 water treatment 35 36. See our User Agreement and Privacy Policy. The coagulation and flocculation process requires a great amount of attention to detail along the way. The Adobe Flash plugin is needed to view this content. 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 … Coagulation, Flocculation and Clarification of Drinking Water Terry L. 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