Electrodeionization Edi Water Treatment

Edi stack:CP-1000S
Pure water resistivity:above 15
Feed water:RO product water
Feed water TEA:less than 35ppm
Feed water PH:6.0-9.0
Material:Wooden Case, stainless steel
Power:0.55KW, 380V,50HZ,3phase
Warranty:1 year
After-sales Service Provided:Video technical support, Field installation, commissioning and training, Field maintenance and repair service, Free spare parts, Online support



1. Brief introduction of electrodeionization edi water treatment

electrodeionization edi water treatment industry pure water by cation ion exchange membrane for Pharmaceutical factory high pure fresh water treatment EDI module project for chemical making fresh water. Electrodeionization (EDI) is a process that uses ion exchange resins to absorb ions from a dilute water stream and then transports the absorbed ions through ion-exchange membranes into a concentrate water stream under the influence of an applied electro field. Further more, the ions are removed continually on the direction of water flow. The conductivity value is get lower and lower. H+ and OH- are formed under the direct current to maintain the system current and regenerate the ion-exchange membrane. Thus to realize the continues and deep salt rejection. EDI system water treatment of ultrapure water for electric industrial use.

2. Application of electrodeionization edi water treatment

EDI typically may be used in any applications that require ultra pure water at a resistivity above 1 M9·cm. The typical industries that use ultra pure water include

1). Microelectronic and semiconductor production.

2). Pharmaceutical and biomedical industries.

3). Chemical production.

4). High pressure boiler such as the ones in power plants.

3. EDI module advatages

Feed water hardness can be 10mg/l

Does not consume salts in operating and need much lower operating expenses.

Does not need to recycle the concentrate, which makes the system much simpler.

The EDI systems require a little energy.

4. Running condition for electrodeionization edi water treatment

4.1running parameter

The product water quality of EDI is depended on the operation condition.    Which including system designing data, feed water quality, feed water pressure. etc.

The EDI unit is adopted CP-2000S EDI module, 2 pcs.

Unit module voltage range: 50-120V

Unit module current range: 0.5-6A

System product water flow rate: 2.00-4.00m3/r

System concentrate flow rate: 0.30-0.60m3/h

System electrolyte flow rate: 0.12m3/h

4.2 running current and voltage

Warning: the heat produced when current pass through EDI module must be take away by water. Thus, once EDI product and concentrate stream is blocked or stopped, the power should be cut off. Otherwise, EDI module will be burned thoroughly.

4.3 feed water requirement

1)feed water: RO product water

2)TEA< 35ppm.

3)  pH : 6.0-9.0

4)  Temperature:5-35oC

5)Feed water pressure<0.4Mpa

6) hardness<10.0 ppm.

7) organic glass matter<0.5 ppm.

8) CL2<0.05 ppm , O3<0.02 ppm.

9) conductivity<60US/CM

10)H2S<0.01 ppm.

11)SIO2<0.5 ppm.



5. EDI module introduction

5.1 Dilute chamber

Dilute chamber is the space for the dilute stream (product water) to pass

through. It is formed by a frame, one piece of anionic ion exchange membrane on one side of the frame and a piece of cationic ion exchange membrane on the other side of the frame. Inside the frame there is tightly packed with mixed ion exchange resins.

5.2 Concentrate chamber

Concentrate chamber is the space for the concentrate to pass through. It is

created by layers of two dilute chambers. It is also formed by anionic ion

exchange membrane, cationic ion exchange membrane and ion exchange


5.3 Electrolyte chamber

Electrolyte chamber is next to an anode and a catholyte chamber next to a cathode.

Isolation board and reinforcing plates.

6. Main parts for electrodeionization edi water treatment

Model Specification Main component
1000LPH EDI system Production:1000L/H (24m3/day) CNP SS304 booster pump

304SS Feed water solenoid valve

stabilized votage & current supply

Canpure EDI membrane

control system

CREATE resistivity meter

CREATE conductivity meter

3S low pressure switch

3S high pressure switch

permeate outlet flow meter

concentrate inlet flow meter

EDI permeate water pressure gauge

concentrate inlet pressure gauge

EDI membrane: Canpure  CP-1000S
Feed water: 2pass RO product water
Product water resistivity: >15MΩ
Designed Recovery:>95%
Frame: SS304
Dimension: 1.0×1.5×0.8m
Driving Motor:2.2KW

7. Certification:

ISO9001-2019 safety production licenseCE-certification of RO-water Filtration Drinking Plant

8. Comments from customers:

Comments From Customers

9. Package and transportation:

water Filtration Drinking Plant package and transportation

10. Finished projects:

    We will answer your email shortly!

    You may also like…


    Go to Top