Water Treatment Ion Exchange Process

As hard water passes through a softener the calcium and magnesium trade places with sodium ions figure 1.

Water treatment ion exchange process.

The terms ion exchange deionization and demineralization are often used synonymously to refer to the same process. Ion exchange is a water treatment process commonly used for water softening or demineralization but it also is used to remove other substances from the water in processes such as dealkalization deionization and disinfection. Rohm and haas ion exchange ion exchange introduction 1 fd sep 2008 ion exchange for dummies an introduction water water is a liquid. While the chemistry of individual ion exchange reactions varies from one application to the next ix is a treatment process where dissolved ions are replaced by other more desirable ions of a similar electrical charge.

Water is made of water molecules formula h2o. But what exactly is it. The exchange medium can be natural zeolites or synthetic resin beads that resemble wet sand. Although different water treatment products utilize this process in different ways the action itself remains the same.

Ion exchange describes a specific chemical process in which unwanted dissolved ions are exchanged for other ions with a similar charge. Aside from its use to purify drinking water the technique is widely applied for purification and separation of a variety of industrially and medicinally. Water softening water purification method. Ion exchange is a water treatment method where one or more undesirable ionic contaminants are removed from water by exchange with another non objectionable or less objectionable ionic substance.

Both the contaminant and the exchanged substance must be dissolved and have the same type of electrical charge positive or negative. All natural waters contain some foreign substances usually in small amounts. The ion exchange process can be used in a variety of ways when it comes to water purification and softening. However deionization and demineralization may be accomplished by technologies other than ion exchange see reverse osmosis ion exchange is a process used extensively in nuclear facilities industrial processes and medical and pharmaceutical operations to control the.

Removal of ions minerals from ha. In the ion exchange process sodium ions are used to coat an exchange medium in the softener. Unwanted ions that are dissolved in the water are replaced with new beneficial or harmless ions of an equivalent charge. Ion exchange usually describes a processes of purification of aqueous solutions using solid polymeric ion exchange resin more precisely the term encompasses a large variety of processes where ions are exchanged between two electrolytes.

The process of ion exchange is one of the most utilized techniques in water and wastewater treatment as well as in separation processes as chemical synthesis medical research food processing mining agriculture etc.