The invention relates to a treatment method for
nanofiltration concentrated liquor of landfill
leachate, which comprises the following steps: carrying out medium-pressure
nanofiltration treatment first for minimization, carrying out coagulation air floatation treatment for the concentrated liquor after the medium-pressure
nanofiltration treatment to recycle humous larger molecular organics for
resource utilization, carrying out resin-based
softening treatment to reduce the
hardness of the concentrated liquor after the coagulation air floatation treatment, performing electrolytic oxidation treatment on the concentrated liquor after the resin-based
softening treatment and treating back washing water, feeding the
clear liquid from the medium-pressure nanofiltration, yielding water from the regenerated waste liquor and yielding water after the electrolytic oxidation to membrane bioreaction treatment, performing
tail gas absorption treatment on gases generated from the electrolytic oxidation, and absorbing
chlorine gas in
tail gases before up-to-standard emission. The treatment method for nanofiltration concentrated liquor of landfill
leachate is reasonable in treatment process with a good
treatment effect, and relatively low in investment and operation costs; the problem of accumulation of humic acids and
hardness ions in the biochemical
system is avoided, and the difficulty in treating the nanofiltration concentrated liquor of the landfill
leachate is solved; and the treatment method is applicable to treating the nanofiltration concentrated liquor generated in the 'MBR+nanofiltration' treatment process for the landfill leachate.