E-Cell StackTM Modello 3X
3X - EDI cell
The MK-3E module is an EDI cell capable of producing demineralised water with a very high level of purity. The ions are removed by means of an ion exchange resin, which in turn is regenerated on a continuous basis by means of electric current. Interruptions of the process and regenerating chemicals are thus not necessary to restore functionality.
Technical data:
| Design pressure of the E-CellTMmodule | 6.9 Bar |
| Working pressure | 4.1-6.9 Bar |
| Pressure drop | 1.4-2.8 Bar |
| Operating temperature | 5-40 ºC |
| Membrane | Asahi Glass Corporation (AGC) |
| Ion-exchange resin | Mitsubishi Chemical |
| Anode materila | IrOx/TiO2 su Ti |
| Cathode material | stainless steel |
| Dimensions | 310 x 710 x h 610 mm |
| Weight | 150 kg |
| Connections | TC (1" for feed - 3/4" for concentrate) |
Performance:
| Minimum flow rate | 2.27 m3/h |
| Maximun flow rate | 6.36 m3/h |
| Normal flow | 5 m3/h |
| Recovery | 90-95% |
| Supply Voltage | 400 V or 600 V DC (maximum) |
| Current | 0.5 - 4.5 A |
| Produced water quality | resistivity >16 MΩ-cm |
| Silica | < 5 ppb |
| Sodium | < 3 ppb |
| Boron | removal > 95% |
The water supplied must meet the following requirements:
| Constituent | Unit | Power supply |
| TEA* | ppm CaCO3 | < 25@5 m3/h |
| Conductivity | uS/cm | <43 |
| pH | from 5 to 9 | |
| Hardness | ppm CaCO3 | < 1 |
| Silica (reactive) | ppm | < 1 |
| TOC | ppm | < 0.5 |
| Total chlorine | ppm | < 0.05 |
| Fe, Mn, H2S | ppm | < 0.01 |
| SDI 15min. | < 1.0 | |
| Turbidity | NTU | < 1.0 |
| Oil and fats | Not detectable | |
| Oxidizing agents | Not detectable | |
| Colour | APHA | < 5 |
* TEA represents the total anionic load, thus including CO2
The module must under all circumstances be protected against components which might damage the resin or the membranes. The module must also be protected against excess pressure and water-hammer phenomena.
Note: the feed to the module must be a reverse-osmosis permeate or water presenting equivalent characteristics. In any case, the parameters indicated above are to be considered maximum values for each individual contaminant and the quality of the inlet water compatible with a specific application must be determined for each individual case.
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