Iridium-based Coated Titanium Anode for Wastewater Treatment

​​​​​​​Iridium-based Coated Titanium Anode for Wastewater Treatment

In the electrochemical oxidation treatment of industrial wastewater, the catalytic activity and durability of the anode directly determine pollutant degradation efficiency and the long-term operating cost of the system. Our Iridium-based Coated Titanium Anode for Wastewater Treatment at Baoji City ShenAo Metal Materials Co., Ltd. is designed specifically for the electrochemical advanced oxidation treatment of various refractory industrial wastewaters. It uses Grade 1 or Grade 2 pure titanium as the substrate, with an iridium-based mixed metal oxide catalytic coating on the surface. The coating maintains stable electrocatalytic activity in complex wastewater systems containing organics, high salinity, and wide pH fluctuations, achieving deep oxidative degradation of organic pollutants through strong oxidizing species such as hydroxyl radicals generated at the anode surface. The anode maintains a stable chemical state during operation, minimizing the risk of metal ion dissolution, making it a reliable electrode solution for industrial wastewater electrochemical advanced oxidation processes.

This product is for B2B Industrial Use Only. Operators should follow relevant chemical safety protocols and wastewater treatment operation standards.

Technical Specifications

Why Choose Our Titanium Anodes?

• Exceptional Durability of Iridium-based Coating in Complex Wastewater
  Iridium-based oxides exhibit a very low corrosion rate at oxygen evolution potentials, attributable to the favorable chemical stability of iridium-based oxides under strongly acidic and high potential conditions. When treating complex industrial wastewater containing organic acids, inorganic salts, and various organic pollutants, the coating consistently maintains stable catalytic activity and structural integrity, making it suitable for long-cycle continuous electrochemical treatment systems and reducing treatment efficiency decline and maintenance frequency caused by coating degradation.
• High Oxygen Evolution Overpotential Promoting Hydroxyl Radical Generation
  The core of electrocatalytic oxidation technology lies in the generation of strongly oxidizing hydroxyl radicals at the anode surface. Iridium-tantalum coatings possess a high oxygen evolution overpotential, providing a wider potential window for hydroxyl radical generation before reaching the oxygen evolution potential. This means that when treating low-concentration organic pollutants, more current is directed toward the oxidation reaction rather than the oxygen evolution side reaction, contributing to improved current efficiency. For applications requiring higher treatment depth, the coating formulation can be adjusted for stronger oxidation capability.
• Chemical Stability in High-Salinity and Strongly Acidic Wastewater
  Wastewater from pharmaceutical, chemical, and landfill leachate sources often contains high concentrations of salts, strong acids, or various organic solvents, posing severe chemical attack on electrode materials. The iridium-based coating maintains a low corrosion rate in these extreme chemical environments, without significant passivation or dissolution due to drastic pH fluctuations or changes in salt concentration, making it suitable for long-term stable service under actual operating conditions with significant influent quality variations.
• Flexible Modular Expansion and Maintenance
  We can provide single or multiple anode modules in series-parallel combinations based on your treatment capacity and pollutant loading. Mesh and perforated plate anodes feature a high open area ratio, suitable for treating wastewater containing suspended solids; tubular anodes are suitable for flow-through reactors; plate anodes are suitable for immersion-type electrolytic cells. When anodes reach the end of their service life, they can be individually replaced. We also offer used anode inspection and recoating services, helping you reduce long-term operation and maintenance costs.

Real-World Applications

• Water Treatment and Disinfection: Used for the electrochemical advanced oxidation treatment of refractory organic pollutants in pharmaceutical wastewater, textile dyeing wastewater, chemical wastewater, and landfill leachate, covering the deep degradation and mineralization of industrial wastewater with high COD, high salinity, and toxic organic content.
• Industrial Wastewater Treatment: Used for the electrochemical oxidation treatment of toxic and hazardous wastewater containing phenols, aldehydes, and halogenated organics from the fine chemical, pesticide, and petrochemical industries, achieving compliance discharge or pretreatment of hard-to-treat wastewater.
• Hydrometallurgy and Metal Recovery: Used for the decomplexing pretreatment of metallurgical wastewater containing heavy metals and organic complexing agents, destroying the stable structure of metal-organic complexes through anodic oxidation to release metal ions for subsequent recovery or precipitation removal.
• Chlor-Alkali and Halogen Chemical Production: Used for the indirect electrocatalytic oxidation of saline organic wastewater, utilizing chloride ions in the wastewater to generate active chlorine at the anode for indirect oxidative degradation of organic pollutants, applicable to the comprehensive treatment of chloride-containing chemical wastewater.

The ShenAo Advantage

18 Years of Fabricating Excellence

Since 2008, we've specialized in valuable metal coated titanium anodes from our office in Baoji's "China Titanium Valley." Our develop bimetallic hazardous welding innovation and progressed coating forms provide items you can trust.

Customization for Your Correct Needs

Every generation line is diverse. We give custom fitted arrangements coordinating your particular current thickness necessities, electrolyte composition, and operational parameters. Whether you require little bunch testing or full-scale generation amounts, we convey on time.

Cost-Effective Lifecycle Management

When coating exhaustion happens, you do not dispose of the whole anode. Our proficient recoating benefit strips the ancient oxide layer, sandblasts the substrate, and reapplies new MMO coating. This expands resource life and decreases your add up to taken a toll of proprietorship considerably.

Frequently Asked Questions

Q: How do I select the appropriate iridium-based coating formulation based on wastewater type?
A: It primarily depends on the type and concentration of organic pollutants and the electrolyte composition in the wastewater. For wastewater containing aromatic pollutants such as phenols and dyes with moderate COD concentration, iridium-tantalum coatings offer a favorable balance between oxidation efficiency and service life. For wastewater with higher chloride ion content, iridium-ruthenium coatings can be used, utilizing the active chlorine generated from chlorine evolution for indirect oxidation. You can provide your wastewater quality report, and our engineers will recommend a matched coating solution.

Q: What factors are related to the consumption rate of iridium-based coated anodes?
A: The consumption rate is primarily related to wastewater pH, operating current density, temperature, and fluoride ion concentration in the wastewater. Strongly acidic and fluoride-containing wastewater will accelerate coating consumption. We recommend providing a detailed wastewater composition analysis during the selection stage so we can assess coating compatibility and provide a service life estimate. Periodically monitoring cell voltage trends during operation helps anticipate coating condition.

Q: How should scaling or fouling on the anode surface be addressed?
A: Wastewater with high hardness or containing iron and manganese ions may form inorganic scale or metal oxide deposits on the anode surface. Mild scaling can be removed by dilute acid online circulation cleaning, while organic fouling can be addressed with dilute alkaline cleaning. We recommend incorporating an online cleaning connection during the system design phase and periodically inspecting the anode surface condition.

Q: How should anodes be handled when the coating reaches the end of its service life?
A: The titanium substrate remains stable in the wastewater treatment environment. The old coating can be chemically stripped, and once the substrate passes inspection, it can be recoated to restore performance to new-anode levels. We offer a full-service process including incoming inspection of used anodes, coating stripping, substrate treatment, and recoating.

Contact Us

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Titanium Anode Manufacturer

Email: zh@baojiti.com.cn

WhatsApp: +86-15877696471 (updated)

Products: Titanium Anodes, MMO Titanium Anodes, DSA Coated Titanium Electrodes, Electrolysis Electrodes, Hydrogen Production Electrodes, Wastewater Treatment Titanium Anodes.