Titanium anode for COD removal

​​​​​​​ Titanium Anode for COD Removal

In the electrochemical oxidation treatment of industrial wastewater, the electrocatalytic activity and durability of the anode directly determine COD removal efficiency and the long-term operating cost of the system. Our Titanium Anode for COD Removal at Baoji City ShenAo Metal Materials Co., Ltd. is designed specifically for the electrochemical oxidation treatment of various high-COD industrial wastewaters. It uses Grade 1 or Grade 2 pure titanium as the substrate, with a noble 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, reducing the COD in wastewater to levels suitable for compliance discharge or subsequent biochemical treatment. The anode maintains a stable chemical state during operation, minimizing the risk of metal ion dissolution, making it suitable for the electrochemical treatment of high-COD wastewater from pharmaceutical, textile dyeing, chemical, electroplating, and landfill leachate industries, serving as a reliable electrode solution for ensuring COD removal efficiency and long-term stable system operation.

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?

• High Oxygen Evolution Overpotential Promoting Deep Organic Oxidation
  The core of electrochemical COD removal lies in the generation of strongly oxidizing hydroxyl radicals at the anode surface, mineralizing organic pollutants into carbon dioxide and water. Our iridium-tantalum and iridium-tin 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 to medium concentration organic pollutants, more current is directed toward the oxidation reaction rather than the oxygen evolution side reaction, contributing to improved current efficiency and COD removal rate. For wastewater with higher chloride ion content, ruthenium-iridium coatings can be selected to utilize active chlorine generated from chlorine evolution for indirect oxidation.
• Coating Formulation Customization for Different Wastewater Types
  Different industrial wastewaters vary significantly in organic pollutant types and coexisting ions, each placing distinct demands on the catalytic selectivity and chemical stability of the anode coating. Wastewater containing aromatic pollutants such as phenols and dyes is preferably treated with iridium-tantalum coatings, balancing oxidation efficiency with service life. Wastewater with higher chloride ion content uses ruthenium-iridium coatings for efficient COD removal through active chlorine indirect oxidation. Wastewater containing high salinity and complex organics can use iridium-tin coatings for a wider potential window. Simply provide your wastewater quality parameters, and we will match the most suitable coating solution.
• Chemical Stability in Complex Wastewater Environments
  Industrial wastewater often contains acids, alkalis, salts, and various inorganic ions, exerting continuous chemical attack and physical erosion on electrode materials. Our coating formulation is optimized to maintain a low corrosion rate and good structural integrity in wastewater with wide pH fluctuations, high salinity, and complex compositions, making it suitable for long-cycle continuous COD treatment systems.
• Flexible Modular Expansion and Maintenance
  We can provide single or multiple anode modules in series-parallel combinations based on your treatment capacity and COD 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

• Advanced COD Reduction in Refractory Industrial Organic Wastewater
  Used for electrochemical oxidation COD removal from wastewater containing high-concentration non-biodegradable organic pollutants in the chemical, pharmaceutical, dyeing, and pesticide industries, covering aromatic ring-opening and chain scission with COD mineralization degradation of phenolic and ether-containing process wastewater from fine chemical manufacturing, simultaneous reduction of residual COD and biotoxic substances in pharmaceutical fermentation broth and antibiotic residue wastewater, deep COD removal associated with halogenated organics and residual chroma in textile dyeing wastewater, and organic load reduction with biodegradability enhancement pretreatment of pesticide intermediate production wastewater.
• Compliance COD Treatment of Landfill Leachate and Membrane Filtration ConcentrateUsed for electrochemical oxidation treatment of recalcitrant COD components in municipal solid waste landfill leachate and various membrane separation concentrates, covering oxidative degradation of COD associated with inert organic matter such as humic and fulvic acids in biologically treated tail water from mature landfill leachate, electrocatalytic chain scission and mineralization of non-biodegradable COD components in nanofiltration and reverse osmosis concentrates, deep COD reduction in membrane concentrates within full-quantification leachate treatment processes, and synergistic electrochemical removal of total nitrogen and recalcitrant COD from concentrates for discharge compliance.
• COD Reduction and Resource Recovery Pretreatment for High-Salinity Industrial Wastewater
  Used for COD reduction and resource recovery integration pretreatment of high-salinity refractory wastewater from the petrochemical, coal chemical, dyeing, and seawater utilization industries, covering organic load reduction and downstream biological treatment feasibility enhancement of refinery electric desalting wastewater and reverse osmosis brine, degradation and transformation of COD associated with polycyclic aromatic hydrocarbons and heterocyclic compounds in coal chemical high-salinity organic wastewater, decolorization and deep COD purification pretreatment of high-salinity dyeing wastewater prior to reuse, and electrochemical degradation of organic pollutants in seawater desalination brine and seawater utilization tail water.
• COD Treatment for Organic Additive-Containing Wastewater from Electroplating and HydrometallurgyUsed for electrochemical COD removal from wastewater containing organic additives and complexing agents in the electroplating, printed circuit board, and hydrometallurgical industries, covering oxidative decomposition of COD in electroplating line rinse water containing surfactants and brighteners, synergistic removal of COD and total phosphorus associated with hypophosphite and organic acid complexing agents in spent electroless nickel plating solutions, deep COD reduction in printed circuit board developing, stripping, and micro-etching organic wastewater under specific operating conditions, and COD pretreatment of mining hydrometallurgical wastewater containing organic extractants and flotation reagents.

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 coating formulation based on wastewater type?
A: It primarily depends on the type of organic pollutants, chloride ion concentration, and COD concentration in the wastewater. Wastewater containing aromatic pollutants with low chloride ion content is preferably treated with iridium-tantalum coatings for COD removal through direct oxidation. Wastewater with higher chloride ion content uses ruthenium-iridium coatings for indirect oxidation through active chlorine generated from chlorine evolution. Wastewater with high salinity and complex organics can use iridium-tin coatings. You can provide your wastewater quality report, and our engineers will recommend a matched coating solution.

Q: What factors are related to the energy consumption of electrochemical COD removal?
A: It is primarily related to wastewater conductivity, COD concentration, organic pollutant type, and current density. Higher conductivity leads to lower cell voltage and lower energy consumption. Higher COD concentration requires greater electrical charge. Easily degradable organics (such as phenols) have higher current efficiency than refractory organics (such as halogenated hydrocarbons). Optimizing the current density and anode area ratio is key to controlling energy consumption. We can provide parameter optimization suggestions based on your wastewater quality and effluent requirements.

Q: What should be noted when treating wastewater containing suspended solids with anodes?
A: It is recommended to install a pretreatment unit (such as a screen or sedimentation tank) at the inlet to control suspended solid particle size and concentration. During operation, periodically inspect the anode surface for solid deposit accumulation and arrange online or offline cleaning as needed. Mesh and perforated plate anodes feature a high open area ratio, resisting clogging when treating wastewater with suspended solids, but a reasonable cleaning schedule should still be established based on water quality conditions.

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.