Ion Exchange Column Design

Ion exchange plant design some basic principles you will not find here a complete plant design manual.

Ion exchange column design.

It is assumed that the breakthrough capacity remains the same. For example metal contaminants are. Ion exchange columns introduction ion exchange resins are used in columns in principle similar to those used for sand filters or activated carbon. Development of column design criteria 16 8 ion exchange process design case study problem definition treatment goals design criteria and constraints mwh s water treatment.

Each unit with a capacity of 120m3 hour average breakthrough capacity of 2 17 mg g 1606 mg l at 20 cm bed height is used for calculation for different bed heights. Rohm and haas ion exchange ion exchange introduction 4 fd sep 2008 to soften water you take a cation exchange resin on which the mobile ion inside the beads is sodium na and you pass the hard water through a column filled with the sodium form resin. Steps to design an ion exchange resin system accurate system design is critical to getting the most from a water treatment system. Usage examples continuous ion exchangers are used when it is imperative that product be continually generated.

Howe and george tchobanoglous. Design procedures the breakthrough curves for an ion exchange column and an adsorption column are similar. The hardness ions ca and mg move into the resin beads and each of these divalent. In an anion exchange column the packing is positively charged and therefore retains negatively charged molecules by coulombic interaction.

Ion exchange chromatography is used to separate charged molecules. These are pressure vessels usually made of rubber lined steel. Ion exchange column design assumptions. Continuous ion exchangers consist of two columns in parallel.

Therefore the same procedures used for the design of adsorption columns may be used for ion exchange columns. Anion exchange column design. The contacting techniques are almost identical. Principles and design third edition 1263 john c.

The bound molecules are eluted with an anion gradient. Since dozens of factors can impact the productivity of the system the cadix system design software program from dow offers precise design recommendations to optimize system performance. Only a few general recommendations to ensure that an ion exchange system is designed economically and to achieve good performance and a simple but detailed example. The ammonium concentration of permeate is 0 14 mg l.

Basic column types are shown in another page. Ion exchange takes place in one column while the resin in the second column is being regenerated resulting in continuous operation. Ion exchange column design free download as pdf file pdf text file txt or read online for free.