Method for evaluating environmental pollution degree of uranium tailings percolation leaching
An evaluation method and tailings technology, applied in the direction of biochemical equipment and methods, microbial measurement/inspection, etc., can solve the problems of accelerating cadmium dissolution, inability to judge the degree of pollution, and inapplicability, and achieve a high reliability effect
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[0035] The method for evaluating the degree of environmental pollution of the uranium tailings percolation and leaching field selected in this embodiment, the steps are:
[0036] S1. Select 2 samples of uranium tailings from 8 sampling points at the uranium tailings stacking point;
[0037] S2. Take 2 parts of uranium tailings samples from each sampling point respectively, and inoculate them into 9K medium and ABS+S medium according to the inoculum amount of 5% for shaking culture. The culture temperature is 30°C and stirred. The speed is 140r / min;
[0038] The 9K medium includes according to the mass concentration: Fe 2+ Concentration of 5g / L FeSO 4 ·7H 2 O, 3.0g / L (NH 4 ) 2 SO 4 , 0.1g / L of KCl, 0.5g / L of K 2 HPO 4 , 0.5g / L MgSO 4 ·7H 2 O, 0.01g / L Ca(NO 3 ) 2 , add distilled water to dissolve to 1L; the pH value of 9K medium is 1.8;
[0039] The ingredients in the ABS+S medium include: 5g / L sulfur powder, 5g / L FeSO 4 ·7H 2 O, 22.5g / L (NH 4 ) 2 SO 4 , 7.5g / L...
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