Method for treating heavy metal in solid waste incineration fly ash through magnetite modification
A technology for solid waste and fly ash incineration, which is applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc. It can solve the problems of secondary wastes that are rarely discussed, and achieve rich raw materials and extraction effects. Good, simple craftsmanship
Inactive Publication Date: 2019-11-19
GUANGZHOU UNIVERSITY
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Abstract
The invention provides a method for treating heavy metal in solid waste incineration fly ash through magnetite modification, and belongs to the technical field of environmental treatment and solid waste treatment. The method comprises the steps that the metal in the fly ash is leached with hydrochloric acid, then cadmium and lead in leachate are effectively removed through humic acid modified magnetite, and in addition, the 5-nonyl salicylaldoxime compounded in an aliphatic compound can be used for recovering copper in the leachate, zinc in the leachate is recovered through dithiophosphonic acid 572 compounded in an aliphatic or aromatic compound, thus, the heavy metal in the fly ash is recovered and removed, and synthesis treatment and resource recycling of the of heavy metal in the fly ash are achieved. The method is simple in process, environmentally friendly, easy to implement and suitable for mass production and engineering application, and has great significance for treating heavy metal in fly ash.
Application Domain
Other chemical processesProcess efficiency improvement +1
Technology Topic
Humic acidWaste treatment technologies +16
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