Coagulation - FlocculationCoagulation 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 with water and wastewater treatment. New topics in this new edition include: activated sludge bulking and foaming control and enhanced bioflocculation;. The book presents the subject logically and sequentially from theoretical principles to practical applications. Successive chapters deal with, in turn, properties of materials present in waters and wastewaters; characteristics and types of coagulants commonly in use; mechanisms and practical implications of destabilization of waterborne material using metal coagulants and polyelectrolytes; considerations and requirements for coagulant addition at the rapid mixing stage; theoretical and practical considerations of flocculation; and details of experimental procedures for assessing primary coagulants, flocculant aids, sludge conditioners, and flocculation parameters. Numerous examples are included as appropriate. Treatment and disposal of sludges resulting from coagulation-flocculation related operations is dealt with in an Appendix.
Analysis and optimization of coagulation and flocculation process
Advanced Search? Then measure the final turbidity in each container. Abbasian The book presents the subject logically and sequentially from theoretical principles to practical applications.
The coagulation-flocculation process can be used as a preliminary or intermediary step between other water or wastewater treatment processes like filtration and sedimentation. However in many basins there is ample evidence that better results can be obtained if mixing and flocculation can be intensified. The tank should hold 24 hours supply and be duplicated so that one tank may be in service while the other is being replenished. In recent years much research has been done on both and sound theoretical rules have been laid down.
PDF | All waters, especially surface waters, contain both dissolved and suspended particles. Coagulation and flocculation processes are used.
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McGraw Hill, New York. Categories : Chemical engineering Water treatment Water technology Environmental engineering. Log In Sign Up. Iron and aluminium salts are the most widely used coagulants but salts of other metals such as titanium and zirconium have been found to be highly effective as well.
In water treatment, coagulation flocculation involves the addition of compounds that promote the clumping of fines into larger floc so that they can be more easily separated from the water. Coagulation is a chemical process that involves neutralization of charge whereas flocculation is a physical process and does not involve neutralization of charge. The coagulation-flocculation process can be used as a preliminary or intermediary step between other water or wastewater treatment processes like filtration and sedimentation. Iron and aluminium salts are the most widely used coagulants but salts of other metals such as titanium and zirconium have been found to be highly effective as well. Coagulation is affected by the type of coagulant used, its dose and mass; pH and initial turbidity of the water that is being treated; and properties of the pollutants present. In a colloidal suspension, particles will settle very slowly or not at all because the colloidal particles carry surface electrical charges that mutually repel each other.
My Notes. The book presents the subject logically and sequentially from theoretical principles to practical applications! Cookies are used by this site. These products proved to be not dependent on temperature or pH correction and alkalinity of the water to work efficiently Theodoro et al.
By ijesrt journal. Being from natural sources, presenting itself as a new source of income. Journal of Hazardous Materials. Kn coagulation-flocculation process can be used as a preliminary or intermediary step between other water or wastewater treatment processes like filtration and sedimentation.