Improvement method of extremely acidified mine soil
A soil and mine technology, applied in the field of contaminated soil remediation, can solve problems such as difficult to achieve, high cost, incomplete oxidation of metal sulfides, etc., to achieve the effects of inhibiting dissolution, improving physical structure, and reducing the catalytic ability of iron oxidation
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Embodiment 1
[0035] Example 1 Soil Improvement of Copper Mine Tailings Pool
[0036] The implementation site is located in the acidification tailings pond of a copper mine in Jiujiang, Jiangxi Province, and a 100m×40m area was selected as the experimental site. The original soil conditions in this area are very harsh, the pH of the tailings is as low as 2.5, the degree of soil acidification and acid production potential are very serious, and there is no plant growth in the area. The area is governed by the following method steps:
[0037] (1) Surface modification of extremely acidified mine soil;
[0038] (2) Apply plant growth-promoting bacteria, phosphate-dissolving bacteria, and sulfate-reducing bacteria in the lower layer of acidified soil, and the application rate is 0.6 tons / ha (the three kinds of bacteria are applied in equal proportions). When applying, the soil is opened to a depth of 10 cm, and the backfill the soil;
[0039] (3) Spread one deck of slaked lime on the surface o...
Embodiment 2
[0046] Embodiment 2 Copper Mine Dump Soil Improvement
[0047] The implementation site is located on the top plane of the acid dump of a copper mine in Shangrao, Jiangxi Province, and a 200m×40m area was selected as the experimental site. The original condition of the soil in this area is very bad, with a pH as low as 2.6, the degree of acidification and acid production potential of the soil are very serious, basically covered by gravel, and there is no plant growth in the area. The area is governed by the following method steps:
[0048] (1) Surface modification of extremely acidified mine soil;
[0049] (2) Apply plant growth-promoting bacteria and sulfate-reducing bacteria bacterial agents in the lower layer of acidified soil, and the application rate is 0.5 tons / ha (the two bacterial agents are applied in equal proportions). When applying, the soil is turned to a depth of 10 cm, and the soil is backfilled after application;
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