Choosing the appropriate replacement time for MMO (Mixed Metal Oxide) titanium anodes requires balancing performance stability, operational efficiency, and cost-effectiveness. The decision is guided by performance indicators, visual inspections, and operational history.
Key Performance Indicators to Monitor
A noticeable decline in these metrics signals the need for replacement:
Cell Voltage Increase: Track the baseline voltage when the anode is new. If the operating voltage rises by ≥20% (e.g., from 3.0V to ≥3.6V) and remains elevated even after cleaning, it indicates irreversible coating degradation. The MMO layer can no longer reduce reaction overpotential, increasing energy consumption.
Reduced Electrocatalytic Efficiency:
In wastewater treatment: A drop in pollutant removal (e.g., COD, cyanide, or phenol reduction) by ≥15–20% (despite consistent operating conditions) suggests the coating’s active sites are depleted.
In disinfection/chlor-alkali processes: Lower chlorine/hypochlorite production rates (e.g., 10–15% less than initial output) at the same current density indicate diminished catalytic activity.
Current Density Limitations: If the anode can no longer operate at its rated current density (e.g., overheating or voltage spikes occur at 80% of the original limit), the coating’s integrity is compromised.
Visual Inspection Clues
Physical damage to the MMO coating or titanium substrate is a clear trigger for replacement:
Coating Degradation:
Peeling, cracking, or flaking of the MMO layer (visible as uneven patches or bare spots).
Discoloration (e.g., from metallic gray to dull black, white, or rust-colored), indicating oxidation or dissolution of the coating.
Exposed Titanium Substrate: Shiny silver or rust-like areas on the surface mean the protective MMO layer is completely worn away. The titanium base will corrode rapidly in electrolytes, risking contamination and system failure.
Structural Damage: Bending, warping, or cracks in the titanium substrate (from mechanical stress or thermal shock) disrupt current distribution and cannot be repaired.
Service Life Benchmarks
While MMO titanium anodes typically last 3–7 years, actual lifespan depends on operating conditions. Replace proactively if approaching these thresholds:
Harsh Environments: High current density (>1000 A/m²), acidic/alkaline electrolytes (pH <2 or >12), or high levels of coating poisons (e.g., sulfides) shorten life to 3–5 years.
Mild Conditions: Lower current density (<500 A/m²), neutral electrolytes, and pre-treated feed water (low impurities) extend life to 5–7 years.
Preventive Replacement Timing
To avoid unexpected downtime, plan replacement when:
Performance metrics show a gradual decline (e.g., 10–15% voltage increase over 6 months), even if not yet critical.
Visual inspections reveal early coating wear (e.g., minor discoloration or thinning) in high-stress areas (e.g., near electrical connections).
The anode reaches 80% of its expected service life (based on historical data or manufacturer specifications), especially in mission-critical systems (e.g., continuous wastewater treatment plants).
Who we are
Qixin titanium Co.Ltd, is a leading manufacturer specializing in coated titanium anode. With an extensive historyand a wealth of expertise, we have been dedicated to providing high-quality products and solutions to variousindustries for many years.Our company was established 2006, and since then, we have accumulated 18 years of valuable manufacturingexperience. This experience has enabled us to master the art and science of producing top-notch coated titaniumanodes that meet the most stringent quality standards.We take pride in our state-of-the -art manufacturing facilities and a team of highly skilled professionals. Ourengineers and technicians are experts in the field, constantly researching and innovating to improve our productsand processes.
Production
1. Substrate treatment: it needs to be treated by roughing, cleaning and removing oil, which can increase the compactness of catalytic.
2. Brushing coating:After substrate treatment, it will be proceeded brush coated. The main coated content is platinum group metal, which is a kind of mixed solution.Then, heat treatment will be going on after drying.The whole procedure need to be repeated many times. This method is better to form thin oxide catalytic that is lamellar adhere to substrate surface.
Why Choose Us?
Unrivaled Product Quality
Crafted from premium titanium with precision and strict quality control, our anodes use advanced coating methods like thermal decomposition. Catalytic layers such as RuO₂-IrO₂ or SnO₂-Sb₂O₃ boost corrosion resistance, electrochemical activity, and lifespan.
Exceptional Performance
With low overpotential, our anodes cut energy use by up to 30% in electrochemical oxidation. High current efficiency enables fast degradation of organic pollutants, heavy metals, and PFAS across various wastewater types.
Customized Solutions
We customize anode coating, thickness, and structure. Our experts analyze your project to ensure cost-effective, optimized performance.
Extensive Industry Experience
Years of work in textiles, pharmaceuticals, and mining give us deep expertise for proactive problem-solving.
Comprehensive Technical Support
Our support covers installation, maintenance, troubleshooting, and staff training.
Sustainable and Environmentally Friendly
Designed to reduce energy use and heavy metal release, our anodes prioritize sustainability, with ongoing R&D for improvements.
Competitive Pricing
Despite top quality, optimized processes and supply chains make our anodes affordable.
Choose us for superior quality, performance, and service. Contact us to achieve your wastewater treatment goals.
Quality assurance and after-sales service
1. We promise that our substrate is high quality,acceleratd life test.The coating solution is configured according to the certain proportion.
2.With the high technology and equipment,All of our tecnical personnel have abundant experience,and our workers are very skilled.During the production of the Titanium anode, each process must carry on the strict examination,Such as the detection of surface rougghness,The quality of coating solution,coating evenness and so on.
3.We have our own production,sales and after-service department.We are usually dedicated to provide customers with high quality and reasonable price product.Most importantly ,we can provide the efficient service.
4.Each procedure will be carefully detected in the technical staff to compelete.accomplish the order in time and delivery on time.
5.During our cooperation,if you have any problem ,you can contact us at anytime,we will do our umost to help you.
