Summary
Electrodialysis (ED) can concentrate or dilute charged ions and molecules in aqueous solution. Its principle is: under the action of direct current electric field, the ion passes through the selective ion exchange membrane, thus obtaining the desalting diluent fluid or concentrate fluid.
Main characteristics of electrodialysis technology:
A. D. high recovery of water;
B. E. no change of solution properties due to chemical action and thermal degradation;
C. Continuous operation, high degree of automation; F, no chemicals, low pretreatment requirements.
Electrodialysis is widely used in desalination of seawater and brackish water, electronics, medicine, food, chemical industry and organic matter recovery. Electrodialysis process is usually composed of pretreatment equipment, booster pump, rectifier, automatic control equipment, cleaning system and electrodialysis device, which can be controlled manually or automatically. Sed series electrodialysis unit of our company adopts high-quality ion exchange membrane components and advanced technology, so that the desalting rate of the equipment is improved, the system is easy to operate, with long service life and low power consumption.
Schematic diagram of electrodialysis
Selection Guide
technical parameter
| Water inlet pressure: ＜ 0.3MPa | Salt content of raw water: ＜ 4000mg / L | Preset time of electrode switching on: 0-99min |
| Working water temperature: 5-35 ℃ | Preset discharge time of electrode switching on: 0-90s |
| Model | Demineralized water yield (m3 / h) | Desalination rate (%) | Assembly type level x section | working voltage（V） | Working current（A） | Electrode spacing L×W×H（mm3) | Nozzle diametermm | 外形尺寸 L×W×H（mm3) | 放置形式 | 膜对数（对） | 本体重量（kg) |
SED-30 1×1/200 | 25-35 | 35-45 | 1×1 | 130～140 | 70 | 805×1600×0.9 | DN80 | 1195×1068×2535 | 立式 | 200 | 2000 |
SED-20 3×3/450 | 20-25 | 70-80 | 3×3 | 2245×1165×1975 | 卧式 | 450 | 3800 | ||||
SED-10 1×1/200
| 10-15 | 35-45 | 1×1 | 100～110 | 40 | 400×1600×0.9 | DN50 | 590×994×2208 | 立式 | 200 | 1000 |
| 590×1995×1045 | 卧式 | ||||||||||
SED-6 3×3/300
| 6-8 | 70-80 | 3×3 | 140～150 | 35 | 590×1380×2208 | 立式 | 300 | 1400 | ||
| 590×1995×1445 | 卧式 | ||||||||||
| SED-5 1×2/200 | 4-6 | 50-60 | 1×2 | 80～90 | 27 | 400×1200×0.9 | 590×994×1565 | 立式 | 200 | 1200 | |
| 590×1395×1045 | 卧式 | ||||||||||
| SED-4 3×3/200 | 3-5 | 65-70 | 3×3 | 140～150 | 590×1380×1565 | 立式 | |||||
| 590×595×1445 | 卧式 | ||||||||||
SED-3 3×6/300 | 2-4 | 75-95 | 3×6 | 75～80 | 20 | 400×600×0.9 | 22000×1400×1700 | 卧式 | 300 | 2100 | |
SED-2 3×6/300 | 1.5-2.0 | 80-90 | 3×6 | 80～90 | 400×800×0.9 | 590×995×1445 | 卧式 | 700 | |||
SED-1 2×4/200 | 1-1.5 | 70-80 | 2×4 | 卧式 | 200 | 2000 | |||||
SED-0.5 3×6/300 | 0.5-1.0 | 85-90 | 3×6 | 90～100 | 15 | 300×640×0.9 | 840×1460×797 | 卧式 | 300 | 450 |
Note: ① the electrode material is titanium coated ruthenium;
② The separator material is PP.
Typical process
The following process is for model selection reference, and the actual process will be designed according to the user's water quality data and water requirements.
Installation dimension drawing
1. Outline drawing of vertical electrodialysis device
Note: this type of electrodialyzer is horizontally assembled, turned over 90 ° after clamping, and operated vertically. The installation position shall be reserved in the design.
2. Outline drawing of horizontal electrodialysis device
Set instance
