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Download or read book Mathematical Models and Design Methods in Solid Liquid Separation written by A. Rushton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The separation of finely-divided solids from liquids constitutes an important stage in many industrial processes. Separation of mixtures ranging from highly concentrated slurries to slightly turbid liquids must be effected in circumstances where the solids, liquid or both phases may have value. Separations may be achieved by use of a membrane or filter medium which, positioned in the path of a flowing suspension, will allow passage of the fluid whilst retaining solids on the surface or within the medium. Alternatively the two phases may be separated by sedimentation processes involving gravitational or centrifugal force. In either mode, separation difficulties are sometimes experienced with the result that solid-liquid separation is often a bottleneck in commercial plants. Operational difficulties and plant failures are associated with the random nature of the particles being separated; variations in size, shape, states of aggregation, compressibility, etc. , produce a wide range of problems. Plugging of the filter medium or the collapse of the solids under applied stress lead to slow flowrates of liquid. The colloidal nature of some precipitates makes separation by settling virtually impossible without the use of chemical agents to enhance the size of basic units and to reduce repulsive surface forces. Unit operations such as filtration, comminution, etc. , involve a seemingly bewildering array of machines which makes plant selection a difficult step and reflects the uncer tainties attaching to operations involving the solid )hase. Many types of pressure, vacuum and centrifugal filter are available.

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Download or read book Water Treatment Principles and Design written by James M. Montgomery, Consulting Engineers and published by Wiley-Interscience. This book was released on 1985-09-03 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on the vast experience of the most respected firm in the industry, Water Treatment Principles and Design is the first major reference on the science of water treatment in several decades. It covers both the practical and theoretical aspects of water quality analysis, treatment plant operation, and facility design, and provides detailed descriptions of processes such as coagulation and flocculation, sedimentation, filtration, ion exchange, and adsorption. In addition, it offers one of the most extensive discussions ever published on design criteria, including component description and organization, aeration equipment, upflow clarifiers, disinfection, and materials.