Membrane Technology and Engineering for Water Purification, by Rajindar Singh

By Rajindar Singh

Membrane know-how and Engineering for Water Purification, 2d edition is written in a pragmatic variety with emphasis on: method description; key unit operations; structures layout and prices; plant apparatus description; gear set up; security and upkeep; technique keep an eye on; plant start-up; and operation and troubleshooting. it truly is supplemented by means of case experiences and engineering rules-of-thumb. the writer is a chemical engineer with vast event within the box, and his technical wisdom and sensible knowledge within the water purification are summarized succinctly during this new edition.

This e-book will tell you which membranes to take advantage of in water purification and why, the place and while to exploit them. it is going to assist you to troubleshoot and increase functionality and offers case reports to help realizing via real-life examples.

  • Membrane know-how part up-to-date to incorporate ahead osmosis, electrodialysis, and diffusion dialysis
  • Hybrid Membrane structures accelerated to hide 0 liquid discharge, salt restoration and elimination of hint contaminants
  • Includes a brand new part on plant layout, power, and economics

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Additional resources for Membrane Technology and Engineering for Water Purification, Second Edition: Application, Systems Design and Operation

Example text

Applicable where fouling tendency is high For removing solutes larger than 10À4 μm, carcinogens such as THM, heavy metal ions, bacteria and germs in household water Water softening; >98% rejection of divalent ions Removal or concentration of dyes, paints and food liquids Test Conditions: 1. 2. 3. 4. 5. 6. 0 pH; 10% recovery. 0 pH; 15% recovery. 0 pH; 15% recovery. 0 pH; 15% recovery. 0 pH; 15% recovery. 0 pH; 15% recovery. Source: CSM membrane catalogue. membrane rejection is typically <99%. , silica).

Bottom – traditional pleated filter with less surface area and non-uniform flow. 1–10 μm), low cost and simple operation, it is not uncommon to see microfilter cartridges cover the entire pore size range deployed at different process stages in a high-purity water plant. 3). Since concentration difference, ΔC is the sole driving force, the difference should be large and the membrane should be thin to reduce the diffusion path [3, 17]. The process is slow compared with pressuredriven membrane processes.

3. It is difficult to pick the 90% point on the S-shaped retention vs. molecular weight curve. 4. , linear polyacrylic acid passes through a membrane that retains a globular protein of the same molecular mass. In addition, the shape of the protein changes in the vicinity of the membrane surface. Hence, the feed concentration must be kept to a minimum to prevent CP. The definition is not absolute because the macromolecule to be retained may or may not be spherical. However, it is a useful tool for pre-screening and selecting UF membranes for a particular application.

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