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MEEF - Articles - Material Separation - Introduction - previous page


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Introduction

Solid-Liquid Separation is a major unit operation that exists in almost every flowscheme related to the chemical process industries, ore beneficiation, pharmaceutics, food or water and waste treatment. The separation techniques are very diverse and the objective of this site is to provide a platform for plant and design engineers, research personnel and students to discuss practices, experiences and new developments in this fascinating unit operation.

The site is still under construction and so far the following sections have been completed:

  • Vacuum Filters - the entire section.

  • Pressure Filters - the entire section.

  • Thickeners - the section on Conventional Thickeners and High-Rate Thickeners

Sections that will be soon added:

  • Lamella - to the Thickeners section

  • Clarifiers - the sections on Conventional and Sludge Blanket Clarifiers

The site, when completed, will review the following topics:

  • Filtration by vacuum and pressure filters.

  • Polishing by vacuum precoat filters and pressure filters.

  • Centrifugation by filtering and sedimenting centrifuges.

  • Sedimentation by conventional, storage and high-rate thickeners .

  • Clarification by conventional, solids-contact and sludge-blanket clarifiers.

  • Ancillary equipment, vacuum pumps, filtrate pumps, vacuum receivers, moisture traps

This site does not cover separation methods such as screening, hydrocycloning, froth flotation and dissolved-air flotation due to my limited experience in these applications.

Other related subjects that will be discussed are:

  • Coagulation and flocculation by bridging polymers.

  • Moisture reduction by wetting agents.

  • Particle analysis and its influence on performance.

  • Defining a Relative Filtration Index during the research phase.

  • Establishing diminishing returns on wash efficiencies and drying.

  • Filtering medium and its selection.

  • Evaluating long-term effects on separation rates.

Please do not hesitate to comment on any of the topics, your opinion, open discussion and criticism are most welcome!


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Website Created: Mar. 7th. 06  - Add MEEF to my Favorites