| 摘要 |
In order to solve the problem that the method of using chelating agents including phosphates to harmlessly process fly ash has a bad effect on fly ash with a high heavy metal content, disclosed in the present invention is a reagent for processing fly ash whilst incinerating waste, which uses the combined action of an activation and a composite phosphate, wherein the activation decreases the reactivity of the calcium ion and the magnesium ion by activating the reactivity of heavy metal ions during the process so that the composite phosphate can fully react with the heavy metal ions, thus greatly enhancing the heavy metal capturing efficiency of the composite phosphate. The reagent for processing fly ash during incinerating waste provided by the present invention comprises the following ingredients by weight: 20%-60% of an activation (Activation), 15%-50% of a composite phosphate (Composite Phosphate), 20%-50% of a solidification (Solidification) and 1%-5% of an auxiliary ingredient. The composite phosphate is formed by mixing multiple compounds containing phosphorus including a phosphate, a dihydric phosphate, etc. The composite phosphate acts together with the activation, which not only improves the heavy metal capturing efficiency, but also has the advantage of low cost. |
