Modules for ultrapure and high purity water systems Electrodeionization (EDI) Stacks E-Cell-3X
E-Cell*-3X is designed to:
l Provide Ultrapure Water for industrial applications including Power, Semiconductor, and General Industry.
l Produce Mixed Bed quality water on a continuous basis.
l Require no caustic or acid for regeneration of ion exchange resin within the stack.
l Be leak free, guaranteed.
l Eliminate brine injection and concentrate recirculation, simplifying system design.
Description and Use
E-Cell-3X stacks are electrodeionization (EDI) stacks which use electrical current to deionize and polish reverse osmosis (RO) permeate water. The product water for the E-Cell-3X is at an Ultrapure level required in today’s demanding applications.
Typical Applications
l Microelectronics
l Power Generation (NOx, Boiler Feed)
l General Industry
Quality Assurance
l CE, UL & CSA marked
l Manufactured in a ISO 9001:2000 facility
E-Cell*-3X, 1 to 12 Stacks
Base System Features
l ECell3X Systems with 1 to 12 stacks for flow range of 15 – 336gpm (3.4 - 76.3 m3/h)
l Rectifier compatible with 400VAC & 50Hz or 460VAC & 60Hz
l Individual stack current monitoring
l Flow & pressure transmitters, ability to connect to SCADA system
System Options
l Allen Bradley Micrologix PLC with Ethernet
n Includes Veolia 6” Color QuickPanel View HMI
l NEMA 4 Terminal Box - removal of PLC & HMI and all wiring terminated at terminal box
l Standard Instrumentation
n Burkert Paddlewheel flow sensors on Dilute, Concentrate, and Electrode Outlet
n Burkert pressure transmitters on all streams
n Burkert conductivity analyzer and sensor on Dilute Outlet
l Premium Instrumentation
n Rosemount vortex flow transmitters on Dilute and Concentrate Outlet
n Burkert Paddlewheel flow sensor on Electrode Outlet
n Burkert pressure transmitters on all streams
n Rosemount conductivity analyzer and sensor on Dilute Outlet
l Inlet Divert Valve
n Standard Instrumentation: Burkert
n Premium Instrumentation: Rosemount
l ANSI to DIN conversion kits
| Feed Water Requirements |
| Total Exchangeable Anions | < 25.0 ppm |
| (as CaCO3) (TEA) Including CO2 as calculated by ECalc pH | 4 – 11 |
| Hardness | < 1.0 ppm (as CaCO3) |
| Silica (Reactive) | < 1.0 ppm |
| SDI (15 min) | < 1 |
| TOC | < 0.5 ppm |
| Total Chlorine | < 0.05 ppm |
| Fe, Mn, H2S | <0.01 ppm |
| Operating Parameters |
| Outlet (Dilute) Product Quality | > 16 MOhm-cm |
| Outlet Product Silica Guarantee | Down to < 5ppb |
| Recovery | Up to 95% |
| Temperature | 40 to 104ºF (4.4 to 40ºC) |
| Feed Pressure | 60 to 100 psi (4.1 to 6.9 bar) |
| Dilute Pressure Drop | 20 to 40 psi (1.4 to 2.8 bar) |
| Input Voltage | 460VAC 60Hz, 400VAC 50Hz |
| Material of Construction & Ratings |
| Welded Frame | Painted Carbon Steel |
| Dilute Piping | Sch. 80 PVC |
| Concentrate Piping | Sch. 80 PVC |
| Flanges | ANSI |
| Rectifier | NEMA 4 |
| Control Panel | NEMA 4 |
| Control Panel Power | 24VDC |
Notes:
1. Actual performance may vary depending on site conditions. Reference Winflows projection software to verify expected product water quality as well as the resistivity, sodium, and silica performance guarantees that are offered for the design conditions. To obtain boron or other guarantees, contact Veolia.
2. Inlet pressure is determined by the downstream pressure requirements for the product and concentrate streams,the choice of counter-current or co-current operation, and stack pressure drop.
3. At nominal flow and 25°C. Reference Winflows projection software to verify for design conditions.
4. Reference the Winflows projection software and the E-Cell Stack Owner’s Manual to verify feed water specifications for the design conditions.
5. TEA (ppm as CaCO3) - Total Exchangeable Anion, this represents the concentration of all of the anions present in the feed water including contributions from OH-, CO2 and SiO2. Winflows must be used to confirm the feed water TEA is acceptable at the specific applications’ operating conditions. Table value is at minimum flow and maximum temperature.
6. 1.0 ppm as CaCO3 feed water hardness limit applies to standard counter-current flow operation only. Allowable feed water hardness decreases to 0.1 ppm as CaCO3 in co-current flow operation.
7. Allowable silica limit decreases above nominal flow. Allowable silica limit decreases to 0.5 ppm with feedwater hardness above 0.5 ppm as CaCO3.
8. The boron feed level is limited to 0.3 ppm as B whenever there is a silica guarantee requirement or resistivity guarantee requirement above 10 MOhm-cm, as higher boron levels could impact performance. Without these requirements the limit is 1.0 ppm boron.
9. Reverse Osmosis (RO) or equivalent feed water: RO provides EDI feed water that is substantially free of particulate matter, colloidal material and high molecular weight organic substances, which can foul ion exchange media. RO permeate quality is specified since EDI stacks contain packed beds of ion exchange medium that cannot be backwashed/fluidized to remove particulate matter.Systems with an open system between a RO system (or other source) and E-Cell (ex. tank, decarbonator) must be fitted with filters immediately preceding the E-Cell, to protect the E-Cell against contamination with particulate matter. Generally, a 5 µm absolute or 1 µm nominal filterwill be acceptable.
10. APHA - color standard/scale named for the American Public Health Association and defined by ASTM D1209.Veolia Water Technologies
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Modules for ultrapure and high purity water systems Electrodeionization (EDI) Stacks E-Cell-3X Images
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