Spec.
| Electrode type | plate electrodes (not meshed) |
| Substrate | Titanium Gr.1 /pure titanium |
| Model | CS- Anode |
| Size | Customized |
| Application | Water treatment |
Practical case (from Belgian customer)
The application will be an electro-dialysis reversal stack to
desalinate seawater
Electrode type: plate electrodes (not meshed),
Material: ruthenium or iridium MMO coated titanium, only a single
side.
Thickness: 1.5 mm
Current density: 300A/m²
Design as on the attached technical drawings.
Extra information:
Composition of the electrolyte: NaSO4 0.1M
Temperature of the electrolyte: 3-25°C
Amperes: 105A max total 35A/ electrode
Operation time: 22/7
Product details
1. Plate base material: Gr.1
2. Plate coating: ruthenium series, and adding rare and precious
metals to maximize the activation of the coating
3. Process: The coating is configured in strict accordance with the
confidential formula, brushed, dried and sintered in a certain
order. After brushing, the sampling is strictly tested according to
the anode rapid life measurement method to ensure the normal
operation of the electrode plate under harsh conditions.
4. In order to ensure the safety of operation and prevent the
terminal from being corroded by the material liquid, the terminal
is made of titanium-clad copper, which has good electrical
conductivity, safety and reliability.
5. Specifications: The size can be customized according to the
actual situation of the electrodialyser.
6. The anode can be designed to be reversed, which can
automatically clean the dirt formed on the surface of the ion
exchange membrane and the electrode, and improve the operating
current of the electrodialysis and the recovery rate of water. At
the same time, it also has lower overpotential, has power saving
performance, and has a longer service life than ordinary
ruthenium-iridium-coated metal anodes.
The principle of electrodialysis desalination:
Desalination of seawater by electrodialysis is achieved through
electrodialysis desalinators. Specifically, under the action of an
external DC electric field, when the raw water containing salt
flows through the compartment composed of anion and cation exchange
membranes and separators, the anions and cations in the water begin
to move directionally, the anions migrate to the anode direction,
and the cations migrate to the cathode direction. Due to the
selective permeability of the ion exchange membrane, the fixed
exchange group of the cation exchange membrane (referred to as the
cation membrane) is negatively charged, so it allows the cations in
the water to pass through and blocks the anions. The fixed exchange
group of the anion exchange membrane (anion membrane for short) is
positively charged, therefore, the anions in the water are allowed
to pass through and the cations are blocked, causing the ions in
the fresh water compartment to migrate to the concentrated water
compartment, so as to achieve the purpose of desalination.
Application range:
Electrodialysis devices have been widely used in electric power,
chemical industry, electronics, environmental protection, medicine,
textile, food and other industries, and have achieved satisfactory
economic benefits. The specific uses are:
1) Desalination of seawater and brackish water to produce drinking
water.
2) Preparation of beverage water such as beer, soda, purified
water, etc.
3) Preparation of low-pressure boiler water.
4) Electrodialysis and ion exchange are combined to produce
distilled water, high-purity water and ultra-pure water. This
water-making method can save 80-90% of acid and alkali, avoid
frequent regeneration of resin, and greatly reduce the cost of
water production.
5) Combined with other different processing units, it can be used
to make water for industries such as electronics, medicine, food,
and chemical industry.
6) Au, Ag, Cu and other precious metals in industrial wastewater
(liquid) such as electroplating and electronics
