Abstract: The present disclosure relates to the field of water treatment technologies, and in particular to a treatment method of a leachate from hazardous waste landfill site. The key points of the technical scheme were as follows: adding sodium carbonate to the leachate to obtain a calcium carbonate residue and a first waste liquid; adding hydrochloric acid to the first waste liquid to obtain a first mixed solution; heating the first mixed solution and introducing a given amount of chlorine gas into the first mixed solution while introducing air, to obtain a second waste liquid and a first mixed gas; introducing the first mixed gas into an alkaline liquid absorption tower; heating the second waste liquid to obtain an evaporation condensate water and a concentrated liquid; centrifuging the concentrated liquid to obtain a sodium chloride wet salt and a centrifuged liquid.

Abstract: The present disclosure relates to the field of water treatment technologies, and in particular to a treatment method of a leachate from hazardous waste landfill site. The key points of the technical scheme were as follows: adding sodium carbonate to the leachate to obtain a calcium carbonate residue and a first waste liquid; adding hydrochloric acid to the first waste liquid to obtain a first mixed solution; heating the first mixed solution and introducing a given amount of chlorine gas into the first mixed solution while introducing air, to obtain a second waste liquid and a first mixed gas; introducing the first mixed gas into an alkaline liquid absorption tower; heating the second waste liquid to obtain an evaporation condensate water and a concentrated liquid; centrifuging the concentrated liquid to obtain a sodium chloride wet salt and a centrifuged liquid.