Preparing method for complex function repairing agent for treatment of heavy metal contaminated soil
A technology with complex functions and polluted soil, which is applied in the field of soil pollution control, can solve problems such as unscientific proportioning of chemicals, damage to soil fertility, long repair period, etc., and achieve the effect of long-term stabilization of heavy metals, small amount of use, and low cost
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Embodiment 1
[0022] (1) Roast the dried rice husk for 2 hours at 450°C under air-isolated conditions, and the cooled and ground particle size is less than 100 mesh. Proportion the above-prepared rice husk charcoal powder with quicklime and diatomite raw materials according to the weight ratio of 0.1:0.5:0.4, take 10g of the above mixture, add 100mL of water, stir and age for 2h, then heat in a hydrothermal reaction kettle Pressurized synthesis, the synthesis temperature is 140°C, the synthesis pressure is 6Mpa, the synthesis time is 4h, filtered and cooled, the filtered solid is dried at 105°C, and ground to a size of not less than 100 mesh to obtain material A.
[0023] (2) Take 10g of material A, add it to 100mL of a solution with a phosphate concentration of 250mg / L, react for 6 hours at room temperature, and stir at 200r / min, then filter, dry the filtered solid at 105°C, and grind it 100 mesh, promptly obtains the complex functional restorative agent.
[0024] Select Cu 2+ Contaminat...
Embodiment 2
[0026] (1) Roast the dried corn stalks for 2 hours at 400°C in the absence of air, and the cooled and ground particle size is less than 100 mesh. Proportion the above-prepared rice husk charcoal powder with quicklime and sodium silicate raw materials according to the weight ratio of 0.05:0.6:0.35, take 10g of the above mixture, add 100mL of water, stir and age for 2h, then heat in a hydrothermal reaction kettle Pressurized synthesis, the synthesis temperature is 170°C, the synthesis pressure is 10Mpa, the synthesis time is 4h, filtered and cooled, the filtered solid is dried at 105°C, and ground to a size of not less than 100 mesh to obtain material A.
[0027] (2) Take 10g of material A, add it to 100mL of a solution with a phosphate concentration of 500mg / L, react for 4 hours at room temperature, and stir at 200r / min, then filter, dry the filtered solid at 105°C, and grind it to a size not less than 100 mesh, promptly obtains the complex functional restorative agent.
[002...
Embodiment 3
[0030] (1) Roast the dried peanut shells at 500°C for 2 hours in the absence of air, and the cooled and ground particle size is less than 100 mesh. Proportion the above-prepared rice husk charcoal powder with quicklime and diatomite raw materials according to the weight ratio of 0.1:0.4:0.5, take 10g of the above mixture, add 100mL of water, stir and age for 2h, then heat in a hydrothermal reaction kettle Pressurized synthesis, the synthesis temperature is 200°C, the synthesis pressure is 12Mpa, the synthesis time is 3h, filtered and cooled, the filtered solid is dried at 105°C, and ground to a size of not less than 100 mesh to obtain material A.
[0031] (2) Take 10g of material A, add it to 100mL of a solution with a phosphate concentration of 250mg / L, react for 5 hours at room temperature, and stir at 200r / min, then filter, dry the filtered solid at 105°C, and grind it to a size not less than 100 mesh, promptly obtains the complex functional restorative agent.
[0032] Cho...
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