Repairing agent as well as preparation method and application thereof
A technology of remediation agent and catalyst, which is applied in the field of contaminated soil remediation, and can solve problems such as poor synchronous remediation effect
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preparation example Construction
[0048] Preparation of porous spherical ceramics: 20-50 parts of quartz sand, 20-50 parts of zirconia, 5-20 parts of alumina, 10-30 parts of piezoelectric catalyst, 0.5-2 parts of pore-forming agent and 1-3 parts of binder Mix, granulate, dry, and sinter at 1100-1350°C for 3-5 hours to obtain porous spherical ceramics with a diameter of 10-25mm;
[0049] Preparation of biochar: pyrolyze agricultural and forestry waste at 650-850°C for 5-6 hours to obtain it;
[0050] Preparation of the restorative agent: mix 3-30 parts of porous ceramics and 2-10 parts of biochar to obtain the product.
[0051] Restoration: After mixing the soil to be repaired and the repairing agent according to the mass ratio of 100:5-40, add water to make the moisture content of the mixture 30wt%-70wt%, then carry out wet grinding and mixing for 0.5-3h, and the stirring speed is 1000-3000 rpm / min.
[0052] The mixing and stirring in the above wet milling is carried out in the process of wet milling.
Embodiment 1
[0056] The present embodiment provides a kind of remediation method of remediation agent in the soil polluted by heavy metals and organic matter, specifically comprises the following steps:
[0057] Preparation of porous spherical ceramics: 25 parts of quartz sand, 40 parts of zirconia, 10 parts of alumina, 30 parts of piezoelectric catalyst lead zirconate titanate, 2 parts of pore-forming agent ammonium bicarbonate and 2 parts of binder polyvinyl alcohol are mixed, After granulation and drying, sinter at 1100°C for 5 hours to obtain porous spherical ceramics with a diameter of 15-20mm;
[0058] Preparation of biochar: pyrolyze rice husk at 650°C for 6 hours to obtain it;
[0059] Preparation of repairing agent: mix 20 parts of porous ceramics and 5 parts of biochar to get it;
[0060] Restoration: After mixing the soil to be repaired and the repairing agent according to the mass ratio of 100:25, add water to make the moisture content of the mixture 50wt%, and then carry out ...
Embodiment 2
[0063] The present embodiment provides a kind of remediation method of remediation agent in the soil polluted by heavy metals and organic matter, specifically comprises the following steps:
[0064] Preparation of porous spherical ceramics: 20 parts of quartz sand, 50 parts of zirconia, 5 parts of alumina, 20 parts of piezoelectric catalyst (10 parts of bismuth oxychloride and 10 parts of barium titanate), 0.5 part of pore-forming agent sodium carbonate and bonding Mix 3 parts xanthan gum, granulate, dry and sinter at 1350°C for 4 hours to obtain porous spherical ceramics with a diameter of 20-25mm;
[0065] Preparation of biochar: pyrolyze peanut shells at 850°C for 5 hours to obtain;
[0066] Preparation of restoration agent: mix 30 parts of porous ceramics and 2 parts of biochar to get it;
[0067] Restoration: After mixing the soil to be repaired and the repairing agent according to the mass ratio of 100:32, add water to make the moisture content of the mixture 30wt%, and...
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Abstract
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