A waste water-based drilling fluid soil treatment composition and its application
A technology of water-based drilling fluid and treatment composition, which is applied in the direction of application, planting substrate, fertilizer mixture, etc., can solve the problems of no soil utilization and high treatment cost, and achieve the effects of convenient operation, no secondary pollution, and simple process
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Embodiment 1
[0031] Pour 40% weathered coal, 20% phosphogypsum, and 1% sawdust into waste water-based drilling fluid in proportion (such as figure 1 and figure 2 shown), the material is added into the waste water-based drilling fluid in the form of a homogeneous mixture, fully stirred evenly and then left to stand, and after the waste water-based drilling fluid loses its fluidity, tall fescue plants are planted, covered with a plastic film cover. Lift the plastic film after one week, observe and record the germination situation (such as image 3 shown). The soil layer was taken and tested by the environmental protection department, and the results are shown in Table 1 below.
[0032] Table 1
[0033]
[0034]
[0035] Remarks: The result "XXXL" means lower than the method detection limit, where "L" means lower than, and the value before "L" is the method detection limit of the item.
Embodiment 2
[0037] Pour 20% weathered coal, 10% phosphogypsum, and 5% sawdust into the waste water-based drilling fluid in proportion and stir thoroughly. The materials are added into the waste water-based drilling fluid in the form of a homogeneous mixture, fully stirred and then left to stand After the waste water-based drilling fluid loses fluidity, tall fescue plants are planted and covered with plastic film. After one week, lift the plastic film, observe and record the germination situation. The soil layer was taken and tested by the environmental protection department, and the results are shown in Table 2 below.
[0038] Table 2
[0039]
[0040]
[0041] Remarks: The result "XXXL" means lower than the method detection limit, where "L" means lower than, and the value before "L" is the method detection limit of the item.
Embodiment 3
[0043] Pour 10% weathered coal, 5% phosphogypsum, and 10% sawdust into the waste water-based drilling fluid in proportion and stir thoroughly. The materials are added into the waste water-based drilling fluid in the form of a homogeneous mixture, fully stirred and then left to stand After the waste water-based drilling fluid loses fluidity, tall fescue plants are planted and covered with plastic film. After one week, the plastic film was removed. Observe and record germination. The soil layer was taken and tested by the environmental protection department, and the results are shown in Table 3 below.
[0044] table 3
[0045] Test items detection value standard value Organic matter (g / kg) 101 ≥20g / kg Total nitrogen (mg / kg) 2.76×10 3
≥1.0g / kg Total phosphorus (mg / kg) 3.96×10 3
≥0.6g / kg Total Potassium (mg / kg) 12.4×10 3
≥15g / kg pH (dimensionless) 7.23 5.0-7.5 Bulk density (g / cm 3 )
1.08 ≤1.30g / cm3 Ch...
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