The concentrated liquid obtained after the effluent of the landfill leachate is concentrated by the nanofiltration membrane. The refractory organic matter has a high COD content and is difficult to remove. The combined process of pretreatment + ozone advanced oxidation is adopted. COD can be decomposed and removed, and the final discharge water indicators are all Meet the GB16889-2008 emission standard.
Advanced Ozone Oxidation Combined Process
Effluent from each process section (from left to right): raw water (NF concentrate), pretreatment effluent, AOP1 effluent, BAC1 effluent, AOP2 water, BAC2 effluent, AOP3 effluent