Di Water Plant

Di Water Plant

Deionized Water Systems / DI Water SystemDeionized water, also referred to as DI water or grade 1, is water that has been purified of virtually of its mineral ions through the use of uniquely manufactured ion-exchange filters in accordance with ASTM D1193.

Additional Information:

• Item Code: INFI5484
• Production Capacity: 3
• Delivery Time: 1WEEK
• Packaging Details: WOOD

Demineralization or DI Water essentially refers to the ion removal process

Ions are electrically charged atoms or molecules found in water that have either a net negative or positive charge. For many applications that use water as a rinse or ingredient, these ions are considered impurities and must be removed from the water.

"Cations" are ions that have a positive charge, and "Anions" are ions that have a negative charge. Pure water (H20), which is not an ion, is created by exchanging unwanted cations and anions with hydrogen and hydroxyl, respectively, using ion exchange resins. The ions that are frequently detected in municipal water are listed below.

 DI Water Systems

The Process of Deionization or Ion-exchange

In water purification, ion exchange is a rapid and reversible process in which impurity ions present in water are replaced by ions released by an ion exchange resin. Impurity ions are absorbed into the resin and must be periodically regenerated to return to their original ionic form. An ion is an atom or group of atoms that has an electric charge. A positively charged ion is called a cation and is usually a metal. A negatively charged ion is called an anion and is usually a nonmetal.

The following ions are widely found in raw waters:

ION EXCHANGE RESINS

There are two basic types of resin-cation-exchange and anion-exchange resins. Cation exchange resins will release Hydrogen (H+) ions or other positively charged ions in exchange for impurity cations present in the water. Anion exchange resins will release hydroxyl (OH-) ions or other negatively charged ions in exchange for impurity anions present in the water.

The application of ion-exchange to water treatment and purification:

There are three ways in which ion exchange technology can be used in water treatment and purification. First, cation exchange resins can be used alone to soften water through base exchange. Second, anion exchange resins can be used alone to remove organic substances or to remove nitrates from water. Third, a combination of cation and anion exchange resins can be used to remove virtually all ionic contaminants present in the water supply. This process is known as deionization. The purification process of the deionizer provides very high quality water.

How Water Deionization Works

For many laboratory and industrial applications, high-purity water which is essentially free from ionic contaminants is required. Water of this quality can be produced by a di water system. The two most common types of deionization are:

• Two-bed deionization
• Mixed-bed deionization

TWO-BED DEIONIZATION

A dual-bed deionizer consists of two vessels. One contains a cation exchange resin in hydrogen form (H+) and the other contains an anion resin in hydroxyl form (OH-). Water flows through the cation column, after which all cations are exchanged for hydrogen ions. To maintain the electrical balance of water, one hydrogen ion is exchanged for every monovalent cation such as Na+, and two hydrogen ions are exchanged for every divalent cation such as Ca2+ or Mg2+. The same principle applies when considering anion exchange. The decationized water then flows through the anion column. During this time, all negatively charged ions are exchanged with hydroxide ions, which then combine with hydrogen ions to form water (H2O).

MIXED-BED DEIONIZATION

In mixed bed deionization equipment, cation and anion exchange resins are intimately mixed and housed within a single pressure vessel. By thoroughly mixing the cation and anion exchangers in one column, mixed-bed deionizers are comparable to long-line dual-bed systems. This means that the water quality in the mixed-bed deionizer is significantly higher than that in his two-bed system.

Mixed bed systems are more efficient in cleaning the feedwater, but are more susceptible to contaminants in the feedwater and require more complex regeneration processes. Mixed bed deionizers are typically used to "polish" water to a higher level of purity after first treating it with a dual bed deionizer or reverse osmosis system.

ELECTRODEIONIZATION

Electrodeionization systems are typically combined with reverse osmosis (RO) and other purification equipment to remove ions from a water stream. Our high-quality deionization module continuously produces up to 18.2 MW/cm of ultrapure water. EDI can run continuously or intermittently.

Deionized Water Systems Applications

Manufacturing plants utilize deionized water systems for its significant effectiveness in generating ultra pure water through the removal of unwanted impurities.

DEIONIZED WATER TREATMENT CAN ALSO BE BENEFICIAL IN:

• Cooling and anointing machines along with other applications
• Manufacturing pharmaceuticals, cosmetics, and processed foods
• Used in car washes for the final rinse
• Laboratory testing
• Power plants
• Boiler feed

WHY IS WATER DEIONIZATION IMPORTANT?

Deionized water systems determine the chemistry of the process in which deionized water is added. Deionized water equipment is in high demand due to its superior ability to provide decontaminated water on demand. This is a necessary feature because the purity of purified water decreases rapidly.