Full quantitative treatment process: "SN self-electrolysis coupled oxidation+biochemical+advanced treatment" is the mainstream technology to degrade heavy metals and toxic substances and improve biodegradability and biochemical efficiency, with low investment cost, long system life and safe operation for more than ten years; The automation system is high and the management is difficult; No concentrated solution is produced, and toxic pollutants are completely solved.

Pretreatment: directly decompose pollutants, and the removal rate of ammonia nitrogen reaches 79%. The improvement of biodegradability of landfill leachate by ammonia nitrogen, COD and inorganic substances laid the foundation for biochemical treatment.

Biochemical treatment: remove dissolved organic matter and ammonia nitrogen.

Advanced treatment: further remove refractory organic matter, suspended matter and ammonia nitrogen. The final ammonia nitrogen removal rate reached 96%.