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EP Series - Electro De-Ionisation
Description
Description
The EP ultrapure water EDI plants are used to produce diluate with a typical conductivity < 0.2 μS/cm by treating reverse osmosis permeate via electrodeionisation (EDI). They are equipped with high quality EDI modules and a Siemens LOGO! controller.
Benefits
- Diluate with typical conductivity < 0.2 μS/cm
- Prepared for direct connection to an RO unit
- Piping in PP
Applications
- For further demineralisation of RO permeate
- For pharmaceutical or laboratory applications, power plants and microelectronics
Specifications
| Controller: | PLC Siemens Logo |
| Resistance diluate without CO2 binding: | 5 MΩ x cm |
| Resistance diluate with CO2 binding: | 10 MΩ x cm |
| Recovery: | 90 – 95 % |
| Diluate backpressure max.: | 1.0 bar |
| Ambient temperature: | 5 - 40 °C |
| Conditions of use: | The unit is designed for a permeate conductivity of 4-20 µS/cm, a CO2 concentration of 10 mg/l and free diluate discharge. The feed water must be softened (< 0.05 °dH) and treated via a reverse osmosis unit without a permeate buffer. The diluate quality depends on the permeate quality. In addition, the following parameters must be maintained in the feed water: |
| Free chlorine: | not detectable |
| Silica | 0.5 mg/l |
| Silt density index (SDI): | < 0.25 |
| Feed water temperature: | 5 – 35 °C |
| Feed water pressure: | 2 – 4 bar |
| Pressure fluctuation: | ± 0.5 bar |
| pH value feed water: | 5.0 - 9.5 |
