Titanium Anodes for Wastewater Treatment

Principle

The principle of electrolysis method for treating industrial wastewater: Titanium anode electrolysis method is used to treat wastewater, which can be divided into electrochemical oxidation, electrochemical reduction, electric flotation, electrocoagulation, and other methods based on the removal object and the generated electrochemical effect.

The electrolytic cell is equipped with an electrode plate. Take appropriate spacing between the electrode plates to ensure less power consumption and easy installation, operation, and maintenance. The electrolytic cell is divided into two types according to the way of the electrode plate connected to the power supply: unipolar and bipolar. After being electrified, under the action of an external electric field, the anode loses electrons and undergoes an oxidation reaction, while the cathode obtains electrons and undergoes a reduction reaction. Electrolytic water treatment technology is divided into direct electrolysis and indirect electrolysis:

Direct electrolysis: The wastewater flows through the electrolysis tank and serves as an electrolyte, where oxidation and reduction reactions occur at the anode and cathode respectively, removing harmful substances. This direct oxidation or reduction reaction on the electrode is called direct electrolysis.

Indirect electrolysis: Electrolytic treatment of wastewater can also adopt indirect oxidation and indirect reduction methods, which use electrode oxidation and reduction products to chemically react with harmful substances in the wastewater, generating insoluble precipitates to separate and remove harmful substances. It has a good removal effect on COD, ammonia nitrogen, and chromaticity in degraded water.

The types of industrial wastewater treated by electrolysis include electroplating wastewater, coking wastewater, organic wastewater, ammonia nitrogen wastewater, printing and dyeing wastewater, garbage leachate, fecal wastewater, oily wastewater, cyanide wastewater, oilfield reinjection water, recycled metal wastewater, hospital wastewater, and catering wastewater treatment

Advantages

1. Electron transfer is only carried out between electrolysis and waste water components, and no additional redox agent is required to avoid secondary pollution caused by additional agents.

2. The reaction conditions can be adjusted at any time by changing the applied current and voltage, with strong Controllability.

3. Free radicals that may be generated during the process react indiscriminately with organic pollutants in wastewater, degrading them into carbon dioxide, water, and simple organic matter, with little or no secondary pollution generated.

4. The reaction conditions are mild, and the electrochemical process can be carried out under normal temperature and pressure.

5. Reactor equipment and its operation are generally relatively simple, and if designed reasonably, the cost is not expensive.

6. If the scale of pollution discharge is small, on-site treatment can be achieved.

7. When metal ions are present in wastewater, the cathode anode can act simultaneously (cathodic reduction of metal ions, anodic oxidation of organic matter) to maximize treatment efficiency and recycle valuable chemicals or metals.

8. Titanium Anodes for Wastewater Treatment can be treated separately or combined with other treatments, such as pre-treatment, to improve the biodegradability of wastewater.

9. Titanium Anodes for Wastewater Treatment has the functions of air flotation, flocculation, and disinfection.

Features

Stability and Durability: One of the most significant advantages of using titanium anodes for wastewater treatment is their remarkable stability and durability. These anodes are engineered to withstand harsh operating conditions, including high temperatures and corrosive environments, which are common in wastewater treatment processes. Their ability to maintain structural integrity and electrical conductivity over extended periods of use ensures consistent performance, making them a reliable choice for wastewater treatment systems.

Compatibility with Various Electrolytes: Titanium anodes exhibit excellent compatibility with a wide range of electrolytes, functioning effectively in both acidic and alkaline conditions. This versatility is crucial for wastewater treatment, as it allows the anodes to be used in diverse processes such as electrocoagulation, electrooxidation, and electrochemical disinfection. Their adaptability to different electrolytic environments enhances the efficiency of removing pollutants and pathogens from wastewater.

High Surface Area: The design of titanium anodes can be optimized to achieve a high surface area, either through creating a porous structure or by applying surface modifications. This increased surface area is pivotal for improving the efficiency of electrochemical reactions involved in wastewater treatment. It provides more active sites for the electrochemical processes, facilitating faster and more effective removal of contaminants and disinfection.

Eco-Friendly Solution: Titanium anodes offer an environmentally friendly alternative to traditional wastewater treatment methods. By leveraging electrochemical reactions, they minimize the use of chemicals in the treatment process, reducing the risk of secondary pollution. This feature is particularly beneficial for industries looking to enhance their sustainability practices and comply with environmental regulations.