Dual-Bed De Ionizers
Standard Features
PakWater Care Services designed all sized of deionization for various Industrial and Commercial applications, these dependable units feature the same precision electronics and performance characteristics as their large-scale counterparts, all in a smaller, topmounted package. Applications cover the full spectrum of industrial, commercial applications.
- Auto and manual regeneration when water quality falls below pre-set limit
- Constant monitoring of water quality
- Solid-state reliability for trouble-free service
- No untreated by-pass water
- Compact, non-corrosive components
- Fiberglass tanks for corrosion resistance
- Convenient, modular construction
- Easy, economical installation
- Optional recirculation pumps
- Parallel or Series Regeneration
- Programmable purge prior to regeneration
- Delivers duplex PakWater Care water more economically than any other deionizer.
- No other PakWater Care controls offer so much performance at such a low price.
- A third tank polisher (Mixbed) can be accommodated under the single control to pick up sopakwater careum or silica leakage, allowing you to easily attain higher purity water at less expense.
- Modular construction reduces downtime and simplifies troubleshooting and service.
Manufacturing
- Pharma
- Paint
- Chemicals
- Cosmetics
- Electronics
- Textiles
- Plating
- Electrodeposition
- Metalworking lubricants
- Glass/Mirror
- Boiler feed
Laboratories
- Testing and materials
- Research and development
- Glassware rinse
- Hospitals/Medical and other facilities
Commercial
- Vehicle washes - cars to aircraft
- Film processing
- Ice plants
- Horticulture/Greenhouse
- Food/Beverage processing
- Printing
| Model No. | Nominal Capacity [gpg] | Service Flow Rate [gpm] | Mineral Tank Size | Resin Quantity [ft]3 | ||
| Cont. | Peak | Cation | Anion | |||
| DI18 | 100,000 | 2.0 | 18.0 | 18” * 65” | 5.0 | 5.0 |
| DI24 | 200,000 | 3.0 | 35.0 | 24" * 72" | 10.0 | 10.0 |
| DI30 | 300,000 | 5.0 | 50.0 | 30" * 72 " | 15.0 | 15.0 |
| DI36 | 400,000 | 7.0 | 70.0 | 36" * 72 " | 20.0 | 20.0 |
| DI42 | 600,000 | 10.0 | 100.0 | 42" * 72 " | 30.0 | 30.0 |
| DI48 | 800,000 | 12.0 | 135.0 | 48" * 72 " | 40.0 | 40.0 |
Deionizers - Demineraliser
Pakwater Care Services is a leading provider of deionization solutions. Our water deionizers are rugged, pre-engineered, pre-assembled, standardized units that minimize expensive installation and start-up costs. We have designed our Deionization systems to maximize the efficiency and repeatability of the unit during the service and regeneration modes
The Process of Deionization or Ion-Exchange
In the context of water purification, ion-exchange is a rapid and reversible process in which impurity ions present in the water are replaced by ions released by an ion-exchange resin. The impurity ions are taken up by the resin, which must be periodically regenerated to restore it to the original ionic form. (An ion is an atom or group of atoms with an electric charge. Positively-charged ions are called cations and are usually metals; negatively-charged ions are called anions and are usually non-metals).
The following ions are widely found in Raw Waters:
| Cations | Anions |
| Calcium (Ca2+) | Chloride (Cl-) |
| Magnesium (Mg2+) | Bicarbonate (HCO3-) |
| Sodium (Na+) | Nitrate (NO3-) |
| Potassium (K+) | Carbonate (CO32-) |
| Iron (Fe2+) | Sulfate (SO42-) |
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 alone can be employed to soften water by base exchange; secondly, anion-exchange resins alone can be used for organic scavenging or nitrate removal; and thirdly, combinations of cation-exchange and anion-exchange resins can be used to remove virtually all the ionic impurities present in the feedwater, a process known as deionization. Water deionizers purification process results in water of exceptionally high quality.
Deionization
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 deionization.The two most common types of deionization are:
- Dual-Bed Deionization
- Mixed-Bed Deionization
Dual-Bed Deionization
The two-bed deionizer consists of two vessels - one containing a cation-exchange resin in the hydrogen (H+) form and the other containing an anion resin in the hydroxyl (OH-) form. Water flows through the cation column, whereupon all the cations are exchanged for hydrogen ions.To keep the water electrically balanced, for every monovalent cation, e.g. Na+, one hydrogen ion is exchanged and for every divalent cation, e.g. Ca2+, or Mg2+, two hydrogen ions are exchanged. The same principle applies when considering anion-exchange. The decationised water then flows through the anion column. This time, all the negatively charged ions are exchanged for hydroxide ions which then combine with the hydrogen ions to form water (H2O).
