Sanitary landfill is one of the main treatment methods for urban waste in China, and the resulting leachate is a difficult to treat high concentration organic wastewater. Its water quality and quantity vary greatly, and its composition is complex and varies with the age of the site. After biological treatment, the residual COD of general landfill leachate is still relatively high, with some reaching as high as 600-800 mg/L and difficult to treat again.

The harmless treatment of leachate has always been a difficult problem. Due to the fact that landfill leachate is a difficult to treat high concentration organic wastewater with strong toxicity, complex composition, high COD and ammonia nitrogen content, severe imbalance in the proportion of microbial nutrients, poor biodegradability, and significant changes in water quality over time, the treatment method of leachate is one of the key issues in landfill design and operation management. The manufacturer of ruthenium iridium titanium anodes stated that it is necessary to choose a reasonable leachate treatment process for the sanitary landfill treatment of urban waste. Electrochemical water treatment technology, due to its strong selectivity, can convert recalcitrant organic matter or biologically toxic and inhibitory pollutants into biodegradable substances, thereby improving the biodegradability of wastewater. Electrolysis can indirectly oxidize leachate from landfills.