Most water treatment practices including coagulation, flocculation and clarification, date back hundreds and in some cases thousands of years. Sep 14, 2017 example problem for designing a flocculation basin. Coagulation and flocculation free download as powerpoint presentation. Flocculation is synonymous with agglomeration and coagulation coalescence. Coagulation is an essential component in water treatment operations. Meanwhile, flocculation is a mixing technique that promotes agglomeration and assists in the settling of particles. Flocculation is a physical process in which the fine solids produced by coagulation are brought together into. We can work with you to optimize the performance of your treatment program, including chemicals and equipment, which can dramatically minimize your overall costs and maximize return on investment. Standard jar test were used in screening the flocculants.
Ebook coagulation and flocculation in water and wastewater. Coagulation and flocculation are designed to remove infectious agents, remove toxic compounds that have adsorbed to the surface of particles, remove precursors to the formation of disinfection byproducts, and make the water palatable. Coagulation and flocculation are wellknown techniques within wastewater treatment. The purpose of the present article is to clarify and explain the. Coagulation results from an interaction among vessel walls, platelets and coagulation factors. Difference between coagulation and flocculation in water.
Ppt coagulation and flocculation linkedin slideshare. Coagulation and flocculation in water treatment title. Definitions, terminology and symbols in colloid and surface chemistry on page 609. Manual of symbols and terminology for physicochemical quantities and units, appendix ii. The suspended particles vary considerably in source, composition charge, particle size. Example problem for designing a flocculation basin. Water treatment plant waste sludge disposal is dealt with in considerable detail, in an appendix devoted to this subject. Various sizes of particles in raw water particle diameter mm type settling velocity 10 pebble 0. Suspended particles vary in source, charge, particle size, shape. Coagulation and flocculation constitute the backbone processes in most water and advanced wastewater treatment plants. Download coagulation and flocculation ebook pdf or read online books in pdf, epub, and mobi format. Click download or read online button to coagulation and flocculation book pdf for free now. Location in the treatment plant after the source water has been screened and has passed through the optional steps of prechlorination and aeration, it is ready for coagulation and flocculation. Earthen jars used to store water it is good to keep water in copper vessels, to expose it to sunlight and.
Key difference coagulation vs flocculation in water treatment water treatment is an important aspect which involves many different steps. 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. Coagulation and flocculation coagulation and flocculationconsist of adding a flocforming chemical reagent to a water to enmesh or combine with nonsettleable colloidal solids and slowsettling suspended solids to produce a rapidsettling floc. Ppt coagulation and flocculation in water treatment. Evaluation and optimization of the coagulation rapid mixing step of the water treatment process includes a variety of aspects. Coagulation and flocculation in water and wastewater treatment third edition start download portable document format pdf and ebooks electronic books free online rating news 20162017 is books that can provide inspiration, insight, knowledge to the reader. Evaluation of chemical coagulationflocculation aids for the removal. Pdf coagulation, flocculation, agglutination and hemaglutination. Coagulation and flocculation part 1 overview of the process.
Flocculation is the agglomeration of destabilized particles into a substantial size particles known as flocs which can be successfully expelled by sedimentation or buoyancy. Emerson water is clarified using the processes of coagulation and flocculation, which remove suspended solids turbidity from water by causing the suspended particles to aggregate into a slime, that settles out of the water. Download pdf coagulation and flocculation free online new. Coagulation flocculation chemistry physical sciences. Coagulation, flocculation and clarification of drinking water. Coagulation and flocculation process fundamentals 1 coagulation and flocculation.
Coagulation flocculation free download as powerpoint presentation. Download pdf coagulation and flocculation free online. Coagulation and flocculation for raw water nalco offers a comprehensive suite of organic and inorganic blended coagulants and organic flocculants. Download coagulationflocculation process for produced water treatment book pdf free download link or read online here in pdf. Coagulation and flocculation are two processes commonly used in water treatment in order to get rid of unwanted suspended material in water. It is a convenient reference handbook providing numerous examples and appended information and it is a vital text for course material for. Coagulation and flocculation in water and wastewater treatment provides a comprehensive account of coagulation and flocculation techniques and technologies in a single volume covering theoretical principles to practical applications thoroughly revised and updated this new edition has been progressively modified and increased in scope to cater for the requirements of practitioners involved. Scribd is the worlds largest social reading and publishing site. Coagulation and flocculation download coagulation and flocculation ebook pdf or read online books in pdf, epub, and mobi format.
Their objective is to enhance the separation of particulate species in downstream processes such as sedimentation and filtration. May 03, 2012 coagulation and flocculation free download as powerpoint presentation. Flocculation is a physical process in which the fine solids produced by coagulation are brought together into larger particles using controlled low levels of shear. The coagulation and flocculation process can occur naturally in some cases or be enhanced by the addition of coagulant and flocculants aids. Another type of tanks combine between flocculation and sedimentation in one tank and called solid contact flocculator clarifier.
But the phenomena are also wellknown from everyday life especially coagulation. Principles of coagulation and flocculation herman 1983. The floc is subsequently removed in most cases by sedimentation. This enables their removal by sedimentation, dissolved air flotation or filtration. Zeta potential is defined and its role in coagulation described. Flocculant and coagulant market global industry analysis. Coagulation and flocculation in water and wastewater. Coagulations and flocculation water treatment suez. Numerous substances have been used as coagulant and flocculation. Klaraid products are designed to function in a variety. Coagulation and flocculation in water and wastewater treatment. Dec 10, 2017 key difference coagulation vs flocculation in water treatment water treatment is an important aspect which involves many different steps. The removal of contaminants from these effluents involves the process of flocculation and coagulation. Coagulation and flocculation in water and wastewater treatment is a readable and useful resource for the water scientist and engineer.
In water treatment, coagulation is the result of the addition of chemical reagents to water. Coagulationflocculation process for produced water. Since water treatment is a very sensitive and important process it requires the presence of both physical and chemical processes. The inorganic flocculants used were ferric chloride fecl 3 and aluminium sulphate al 2so 4 3 a thermodynamic model is developed for understanding the coagulation and flocculation process for inorganic flocculants. Coagulation and flocculation water purification physical. Coagulation and flocculation in water and wastewater treatment provides a comprehensive account of coagulation and flocculation techniques and technologies in a single volume covering theoretical principles to practical applications. Coagulation and rapid mixing coagulation is the process by which particles become destabilized and begin to clump together. Coagulation involves the use of a coagulant which has the potential to destabilize the previously stabilized charged. Coagulation and flocculation processes are used to separate the suspended solids portion from the water. This knowledge will provide a basis for understanding the needs of the. It is a convenient reference handbook providing numerous examples and appended information and it is a vital text for course material for undergraduate and postgraduate students. Groundwater and surface water contain both dissolved and suspended particles. Mar 31, 2016 3312016 2 why coagulation and flocculation.
Consider the use of cationic polymers in a suspension of wood fiber fines with negative surface charges. Suez offers a comprehensive portfolio of coagulants, flocculants and customdesigned polymers that aid the clarification process. Coagulation and flocculation play a dominant role in many water and wastewater treatment, schemes. Invaluble for water scientists, engineers and students of this field, coagulation and flocculation in water and wastewater treatment is a convenient reference handbook in the form of numerous examples and appended information. Pdf coagulation, flocculation and agglutination are terms that usually cause confusion. Apr 27, 2016 042716 water treatment 59 g value for coagulation. Flocculation in the papermaking system is analogous to coagulation, except that a charged polymer is used either to decrease the repulsive forces or to act with several particles at one time bridging to achieve aggregation. Ppt coagulation and flocculation in water treatment powerpoint presentation free to download id. Basically, coagulation is a process of addition of coagulant to destabilize a stabilized charged particle. Coagulation is basically a synthetic procedure water treatment. From my course ees 3030, water treatment systems, in the department of environmental engineering and earth sciences at clemson university. Coagulationflocculation process for produced water treatment. Suspended particles vary in source, charge, particle size, shape, and density.
They are typically used for treatment of wastewater containing colloids suspended particles and metal ions. Coagulation and flocculation are used to separate the suspended solids portion from the water. The importance of flash mixing and slower agitating processes in flocculation are also emphasized. Pdf coagulationflocculation processes in waterwastewater. Flocculation is commonly confused with coagulation, and the terms are consequently used to some extent interchangeably but they are very different processes. Evaluation and optimization of the coagulationrapid mixing step of the water treatment process includes a variety of aspects. Flocculation refers to the process used to bring the coagulated particles together so that they can combine to form larger, settleable, and filterable masses of particles called floc. Coagulation, flocculation and clarification of drinking water terry l.
1520 955 213 1028 16 673 1425 523 772 584 1088 821 778 1355 809 650 500 486 803 136 435 1466 1415 116 1217 17 563 923 709 1411 330 431