Method and device for efficiently recovering nickel ions in electroplating wastewater
The invention relates to the technical field of electroplating wastewater recovery, in particular to a method and device for efficiently recovering nickel ions in electroplating wastewater, and the method comprises the following steps: adsorption and purification: treating nickel-containing electrop...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
17.03.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to the technical field of electroplating wastewater recovery, in particular to a method and device for efficiently recovering nickel ions in electroplating wastewater, and the method comprises the following steps: adsorption and purification: treating nickel-containing electroplating wastewater by using resin and a dynamic continuous adsorption method, and stopping the adsorption process when the concentration of nickel ions at an outlet reaches saturation; a hydrochloric acid solution with a preset concentration is prepared, resin is regenerated in a dynamic continuous mode, and regeneration is stopped when regeneration liquid reaches a preset volume; and oxalic acid precipitation: preparing an oxalic acid solution with a preset concentration, and stirring the oxalic acid solution and the regenerated nickel-containing concentrated solution for reaction to obtain a precipitate. According to the method for efficiently recycling the nickel ions, enrichment of the nickel ions with low conce |
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Bibliography: | Application Number: CN202211554079 |