EDI stack MK-7
MK-7 is designed to
• Provide ultrapure water for industrial applications including power and general industry.
• Produce mixed bed quality water on a continuous basis.
• Require no caustic or acid for regeneration of ion exchange resin within the stack.
• Be leak free, guaranteed.
• Eliminate brine injection and concentrate recirculation, simplifying system design.
description and use
MK-7 are high flow electrodeionization (EDI) stacks which use electrical current to deionize and polish reverse osmosis (RO) permeate water. MK-7 product water is at an ultrapure level required in today’s most demanding applications.
typical applications
• Power Generation (NOx, Boiler Feed)
• General Industry
quality assurance
• CE, RoSH & CSA marked
• Manufactured in an ISO 9001 and ISO 14001 facility
Stack Specifications |
Flow | 4.2 - 7.8 m3 /hr | 8 - 34 gpm |
Maxmium flow | 7.8 m3 /hr | 34 gpm |
Nominal flow | 6.0 m3 /hr | 26 gpm |
Shipping weight | 137 kg | 300 lb |
Dimensions (width x length x height) | 31cm x 61cm x66cm | 12’’ x 24” x 26” |
Typical Performance |
Product Quality |
Resistivity | > 16 MOhm-cm |
Sodium | < 3 ppb |
Silica (SiO2) Removal | Up to 99% / < 5 ppb |
Boron Removal | > 95% |
Operation Parameters |
Recovery | Up to 97% |
Concentrate Flow (vs. Product Flow) | Countercurrent, hardness ≥0.10 ppm as CaCO3 Cocurrent, hardness |
Voltage | 0 - 400 VDC |
Amperage | 0 - 5.2 ADC |
Inlet Pressure Cocurrent | 3.1 - 6.9 bar | 45 - 100 psi |
Inlet Pressure Countercurr | 4.1 - 6.9 bar | 60 - 100 psi |
Pressure Drop | .0 - 3.8 bar | 15 - 55 psi |
Maximum Feed Water Specifications |
Feed Water - Total Exchangeable Anions (TEA as CaCO3) | < 25 mg/l | < 25 ppm |
Feed Water – Conductivity, NaHCO3 equivalent | < 43 μS/cm | < 43 μS/cm |
Temperature | 5 - 40˚C | 41 - 104˚F |
Total Hardness (as CaCO3) | < 1.0 mg/l | < 1.0 ppm |
Silica (SiO2) | < 1.0 mg/l | < 1.0 ppm |
Total Organic Carbon (TOC as C) | < 0.5 mg/l | < 0.5 ppm |
Total Chlorine | < 0.05 mg/l | < 0.05 ppm |
