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