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ACILYZER EDR
ACILYZER EDR
In electric dialysis (ED), EDR is well used for desalinations and removals of nitrate ions from underground water. The polarity is regularly converted in order to prevent from forming solid scales in the membranes.

Principle
The EDR is a kind of ED system, which is used to separate ionic substances from aqueous solution, and is operated by periodically changing its polarity to provide better performance in economics and maintenance work compared to those of conventional ED.

Fig.12 Principle
Fig.12 Principle

Feature
1
Scale Deposit can be prevented
Solid scale precipitated on ion exchange membranes while operating the system can be prevented by periodically changing polarity.
2
High Water Recovery
Raw water can be recovered as product water in higher ratio by its unique process and setting up an appropriate condition of polarity reversal to meet each raw water quality compared to that in the conventional ED system.
3
Saving Power Consumption
The EDR process can be operated in low power consumption. Because ion exchange membranes to be installed in the EDR are developed for salt production process which specially requires low electric resistance. In addition, each component of Electrodialyzer is designed to give low pressure drop while in operation and other equipments of the system are also designed to provide less power consumption.
4
It is a safety equipment with use of Ion Exchange Membrane called NEOSEPTA based on over 40 years of application for salt manufacturing.
5
Electrodes for the EDR are made by special material to give long life time. Quantity of chemicals for maintenance work is less compared to that of the conventional ED.
6
High SiO2 content water can be treated without forming precipitation on ion exchange membranes.
7
Desalination ratio of raw water can be easily controlled.
8
The EDR is operated in low pressure, noise and vibration to keep friendly environment.

Application
Desalination of underground water, removal of impurities and nitrate ions from underground water

lineup
Acilyzer EDR is available with a wide range of treatment capacities, each suited to the amount of processing.

Example
Example 1
Treatment: Removal of hardness and nitrate ions from underground water
Condition Underground Water: Total hardness - 320 mg/L
Product Water: Total hardness – 56 mg/L
Process flow Underground Water → Filtration →
EDR → Product Water (to be used for drinking water)
  Unit Underground Water Product Water
Sodium Ion (Na) mg/L 34 24
Chloride Ion (Cl) mg/L 56 11
Total Hardness mg/L 320 56
Nitrate Ion mg/L 6.1 1.8
Electric Conductivity µS/cm 750 220
Power Consumption Kwh/m3 - 0.30

Example 2
Treatment: Removal of hardness and TDS(Total Dissolved Solids) from underground water
Condition Underground Water: Total hardness - 567 mg/L
Product Water: Total hardness – 40 mg/L
Process flow Underground Water → Filtration →
EDR → Product Water (to be distributed)
  Unit Underground Water Product Water
Sodium Ion (Na) mg/L 236 42
Chloride Ion (Cl) mg/L 587 40
Total Hardness mg/L 567 40
Total Dissolved Solids mg/L 1500 180
Electric Conductivity µS/cm 2340 307
Power Consumption Kwh/m3 - 0.47


APPLICATION EXAMPLES OF ION EXCHANGE MEMBRANE
ELECTRONICS
* Production of High Purity Chemicals
* Production of Ultra Pure Water
* Battery Diaphragm
FOOD AND PHARMACEUTICAL
* Demineralization of Cheese Whey
* Demineralization of Organic Acids and Amino Acids
* Desalination of Soy-Sauce
* Stabilization of Wine
* Demineralization, Deacidification of Fruit Juice
* Demineralization of Natural Extract
* Demineralization of Poly-saccharide
* Demineralization of Betaine
* Demineralization and Purification of Pharmaceutical Intermediate
* Organic acid productions from organic salts.
EMVIRONMENTAL CONSERVATION
* Acid and base regeneration from salts.
* Desalination of Leachate
* Removal of Nitrate from Under-Ground Water
OTHERS
* Production of Salt from Sea water
* Production of Drinking Water from Brackish Water
* Desalination of Deep Sea Water
* Acid Recovery from Waste Acid
* Recovery of Valuable Metals
* Recovery of Acid from Pickling Waste



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