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After the filtration, filtrates is acidified, assumes the orange red to the solution, again filters the solid filters out, the solid by the laundering, the ether is washed, results in the brown color solid, dissolves this solid in the water moves in NH3 the nature, the activated carbon decolorizes,

After filtering, landfill leachate by acidification, showing orange-red to a solution, and then filter filters out solids, solids are washed, ether wash khaki solid, the solid is soluble in water in NH3 tonality, active carbon decoloration, filtering, white solid.