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Outline
The experimental study of deep uranium removal by two kinds of special resins was carried out for high nitric acid uranium-containing wastewater in nuclear fuel element plant. The effects of adsorption equilibrium time and acidity, deep uranium removal capacity, and dynamic adsorption performance were investigated. The resin adsorption equilibrium capacity was measured. The results show that, under the conditions of original acidity (about 3 mol/L), static adsorption time for 8 hours, the uranium concentration in wastewater can be successfully reduced to less than 0.05 mg/L by the special resins. Under the conditions of original acidity, dynamic adsorption time for 30 minutes, the concentration of uranium in the first two bed volume adsorption tail liquid of the two resins is about 0.7 mg/L. The resins exceed breakthough point in a short time. It can be considered to increase the kinetic properties of the resin by changing the group type.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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