Titanium anode for coking wastewater treatment

​​​​​​​Titanium Anode for Coking Wastewater Treatment

Coking wastewater contains high concentrations of refractory pollutants such as phenols, polycyclic aromatic hydrocarbons, ammonia nitrogen, and cyanides, placing stringent demands on the catalytic activity and anti-fouling capability of electrode materials. Our Titanium Anode for Coking Wastewater Treatment at Baoji City ShenAo Metal Materials Co., Ltd. is designed specifically for the electrochemical oxidation treatment of coking wastewater. 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 the complex coking wastewater system containing phenols, cyanides, high salinity, and high COD, achieving deep oxidative degradation of refractory organics such as phenols and polycyclic aromatic hydrocarbons through strong oxidizing species such as hydroxyl radicals generated at the anode surface, while simultaneously achieving efficient removal of ammonia nitrogen through active chlorine generated by the chlorine evolution reaction. The anode maintains a stable chemical state during operation, minimizing the risk of metal ion dissolution, making it suitable for advanced treatment of biochemically treated coking wastewater effluent, pretreatment of ammonia distillation wastewater, and treatment of coking wastewater membrane concentrate, serving as a reliable electrode solution for ensuring coking wastewater compliance discharge 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?

• Efficient Oxidative Degradation of Phenols and Polycyclic Aromatic Hydrocarbons
  The most abundant organic pollutants in coking wastewater are phenols and their derivatives, along with structurally stable refractory organics such as polycyclic aromatic hydrocarbons. Our iridium-tantalum and iridium-tin coatings possess a high oxygen evolution overpotential, enabling efficient generation of hydroxyl radicals when treating low to medium concentration organic pollutants, carrying out electrophilic attack on the benzene ring structure of phenolic compounds and achieving ring-opening mineralization. For coking wastewater with higher chloride ion content, ruthenium-iridium coatings can be selected to utilize active chlorine for indirect oxidation, synergistically enhancing COD and color removal efficiency.
• Dual-Function Activity for Simultaneous COD and Ammonia Nitrogen Removal
  Biochemically treated coking wastewater often still contains residual concentrations of COD and ammonia nitrogen, requiring advanced treatment for compliance discharge. Our coating formulation balances direct oxidation activity (generating hydroxyl radicals for organic degradation) and chlorine evolution activity (generating active chlorine for ammonia nitrogen oxidation), achieving simultaneous COD and ammonia nitrogen removal within a single electrolytic unit, simplifying the treatment process flow and reducing equipment footprint.
• Chemical Stability and Anti-Fouling Capability in Complex Coking Wastewater
  Coking wastewater contains tar, oils, and suspended particulate matter, posing dual challenges of physical fouling and chemical attack on the electrode surface. Our coating formulation is optimized to maintain a low corrosion rate and good structural integrity in such complex media. Mesh and perforated plate anodes feature a high open area ratio, resisting clogging when treating coking wastewater containing suspended solids and oils, reducing treatment efficiency decay caused by surface fouling.
• Flexible Modular Expansion and Maintenance
  We can provide single or multiple anode modules in series-parallel combinations based on your treatment capacity and influent COD/ammonia nitrogen loading. Coking wastewater typically has large flow volumes and significant water quality fluctuations; the modular design facilitates flexible adjustment of operating parameters and expansion of treatment capacity according to influent variations. 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

• Industrial Wastewater Treatment: Used for the electrochemical advanced treatment of coking wastewater from coking plants, integrated steel plant coking workshops, and coal chemical enterprises, covering the simultaneous removal of COD and ammonia nitrogen from biochemically treated effluent, pretreatment of ammonia distillation wastewater, and advanced oxidation treatment of coking wastewater membrane concentrate.
• Water Treatment and Disinfection: Used for the electrochemical oxidation treatment of toxic and hazardous industrial wastewater containing phenols, polycyclic aromatic hydrocarbons, and high COD, covering the compliance discharge and resource recovery pretreatment of refractory organic wastewater from coal chemical industries such as coal-to-gas, coal-to-liquid, and coal tar processing.
• Hydrometallurgy and Metal Recovery: Used for the cyanide destruction pretreatment of cyanide-containing coking wastewater, converting highly toxic cyanides into cyanates and nitrogen gas through anodic oxidation, creating safe water quality conditions for subsequent biochemical treatment.
• Chlor-Alkali and Halogen Chemical Production: Used for the indirect electrocatalytic oxidation of saline coking wastewater, utilizing the chloride ions inherently present in the wastewater to generate active chlorine at the anode for the synergistic oxidative degradation of organic pollutants and ammonia nitrogen.

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: What coating is suitable for coking wastewater treatment?
A: It depends on the treatment stage and water quality characteristics. For advanced treatment of biochemically treated effluent, where COD and ammonia nitrogen typically coexist, iridium-tantalum coatings can be selected to balance direct oxidation and chlorine evolution activity. For stages with higher chloride ion content, such as ammonia distillation wastewater pretreatment or membrane concentrate treatment, ruthenium-iridium coatings can be selected to utilize active chlorine for efficient indirect oxidation. For front-end wastewater with higher oil and suspended solids content, mesh or perforated plate anodes are recommended to reduce clogging. You can provide us with a full water quality analysis report for your coking wastewater, and our engineers will recommend a matched coating solution and anode structure.

Q: How do oils and suspended solids in coking wastewater affect the anode?
A: Oils and suspended solids may form a fouling layer on the anode surface, hindering contact between active sites and the wastewater, leading to decreased current efficiency and increased cell voltage. It is recommended to install pretreatment measures such as oil separation and sedimentation before the electrochemical treatment unit to control influent oil content and suspended solids concentration. Additionally, mesh or perforated plate anodes with high open area ratios should be selected, and periodic online or offline cleaning should be scheduled to maintain anode treatment efficiency.

Q: What factors are related to the COD and ammonia nitrogen removal efficiency of the anode?
A: It is primarily related to wastewater conductivity, chloride ion concentration, current density, pH, and hydraulic retention time. Higher conductivity leads to lower cell voltage; higher chloride ion concentration leads to higher ammonia nitrogen indirect oxidation efficiency; current density and hydraulic retention time directly influence COD and ammonia nitrogen removal rates. Coking wastewater quality fluctuates significantly; it is recommended to configure adjustable power supplies and online monitoring instruments during system design to flexibly adjust operating parameters according to influent variations.

Q: How should anodes be handled when the coating reaches the end of its service life?
A: The titanium substrate remains stable in the coking 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.