EDI ultrapure water treatment

EDI ultrapure water treatment

Model: EDI-3000LPH
Capacity: 3000LPH
Edi stack: CP-3600S
Pure water resistivity: above 15
Feed water: RO product water
Feed water TEA: less than 35ppm
Feed water PH: 6.0-9.0
Temperature: 5-35C
Brand Name: CHIWATEC
Condition: New
Power: 1.1KW, 380V,50HZ,3phase
Size: 100KG
Weight: 810mm*870mm*1290mm
Packing Material: Wooden Case, stainless steel
Applicable Industries: Manufacturing Plant, Food & Beverage Factory, Retail, Food Shop, Construction works , Energy & Mining, Food & Beverage Shops



1. Brief introduction of EDI ultrapure water treatment

EDI ultrapure water treatment by cation ion exchange membrane for Pharmaceutical factory high pure fresh water treatment EDI module project for chemical making fresh water.  (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 EDI ultrapure 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 EDI ultrapure 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.
  12. SDI15<1.0
  13. color<5APHA

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.
Power and connections.

6. Main parts for EDI ultrapure water treatment

EDI unit
1permeate tank4m31set
liquid level switchKEY-52set
2EDI feed pumpCR5-71set
6EDI moduleCP-3600S1pc
8product flow meterZ30051pc
9flow switchCF-400L1pc
10flow switchCF-160L1pc
11feed water conductivity meterCCT33201pc
12product resistivity meterRCT32001pc
13product water solenoid valve/ unqualified product solenoid valveDN252pc
14feed water solenoid valve/ unqualified feed water solenoid valveDN252pc
15pressure gauge0-150psi5pc
16pressure switchJC-2061set
17eletrical control board1set

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:

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