Mining area sandy soil remediation agent and preparation method and application method thereof
A soil remediation agent and technology for sandy soil, applied in the field of sandy soil remediation agent in mining areas and its preparation, can solve the problems of less engineering application and less sandy soil remediation, etc., and achieves easy availability, increased soil fertility, and multiple functions. Effect
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Embodiment 1
[0026] 1) Primary pretreatment of fly ash: soak a certain amount of fly ash in a weak acid aqueous solution (solid-to-liquid mass ratio 1:7) for 5 hours, take out the fly ash and roast at 350°C for 1 hour, after cooling, put the fly ash Ash, granular organic matter, sludge protein, and starch are fully mixed according to the mass ratio of 5:1:1:1, and then the mixture is placed in deionized water (solid-liquid mass ratio 1:1), and then the obtained solid-liquid mixture is placed in 56 ℃ was irradiated with 450kGy gamma rays for 17min, and after irradiation, the solid-liquid mixture was cooled to room temperature and allowed to stand for 3h; the solid-liquid mixture was irradiated again with 450kGy gamma rays for 10min at 56℃. After the irradiation is completed, the separated solid-liquid mixture, the obtained solid substance is repeatedly washed with deionized water until the floating impurities are completely removed, and then the solid is smashed into small particles and drie...
Embodiment 2
[0040] 1) Primary pretreatment of fly ash: soak a certain amount of fly ash in weak acid aqueous solution (solid-to-liquid mass ratio 1:7.5) for 5.5 hours, take out the fly ash and roast at 370°C for 1.1 hours, after cooling, put Fly ash, granular organic matter, sludge protein, and starch are fully mixed according to the mass ratio of 6:1.5:1.5:1.2, and then the mixture is placed in deionized water (solid-liquid mass ratio 1:1.5), and then the obtained solid-liquid mixture 470kGy gamma rays were irradiated at 56.5°C for 18min, and the solid-liquid mixture was cooled to room temperature for 3.5h after irradiation; the solid-liquid mixture was irradiated again with 470kGy gamma rays for 11min at 56.5°C. After the irradiation is completed, the separated solid-liquid mixture, the obtained solid substance is repeatedly washed with deionized water until the floating impurities are completely removed, and then the solid is smashed into small particles and dried;
[0041] 2) Secondar...
Embodiment 3
[0054] 1) Primary pretreatment of fly ash: soak a certain amount of fly ash in weak acid aqueous solution (solid-to-liquid mass ratio 1:8) for 6 hours, take out the fly ash and roast at 400°C for 1.2 hours, after cooling the powder Coal ash, granular organic matter, sludge protein, and starch are fully mixed according to the mass ratio of 7:2:2:1.4, and then the mixture is placed in deionized water (solid-liquid mass ratio 1:2), and then the obtained solid-liquid mixture is placed in 57°C was irradiated with 490kGy gamma rays for 20min. After irradiation, the solid-liquid mixture was cooled to room temperature and allowed to stand for 4h; the solid-liquid mixture was irradiated again with 490kGy gamma rays for 13min at 57°C. After the irradiation is completed, the separated solid-liquid mixture, the obtained solid substance is repeatedly washed with deionized water until the floating impurities are completely removed, and then the solid is smashed into small particles and dried...
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