关键词: 含钚废水, 共沉淀法, 钚, 含铁吸附剂

Abstract:

By using the co-precipitation method, a large number of sequencing batch experiments for plutonium-containing wastewater were carried out by changing the original conditions of the sedimentation process. The experimental data show that the order of adding KMnO₄, iron containing adsorbent and NaOH influences significantly the adsorbing of plutonium. The order of first adding KMnO₄, adjusting pondus hydrogenii (pH) and then adding the adsorbent in experiments has the best effect on the plutonium adsorption. When the pH of plutonium-containing wastewater is about 10, FeCl₃ and FeCl₂ mixed reagent showed better adsorption ability and rate than FeSO₄ and Fe₂(SO₄)₃ mixed reagent, FeSO₄ reagent. At the different proportion of FeCl₃ and FeCl₂, the effect on the settlement of plutonium may also be affected. The improved process can promote 20% for the settling of plutonium in radioactive waste water, and the time needed for sedimentation reduced to 1/5 of the original.

Key words: Plutonium-containing wastewater, Co-precipitation method, Plutonium, Iron-containing adsorbent