Soil repairing agent and preparation method thereof
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A technology of soil remediation agent and adhesive, which is applied in the agricultural field, can solve the problems of low repeatability and the range of crops used, and achieve the effects of reducing absorption, good soil remediation effect, and improving remediation effect
Active Publication Date: 2015-04-22
CHENGDU NEWSUN CROPSCI
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[0005] The application number is 20111041314.5 Chinese patent application, which discloses the use of cadmium-resistant tobacco varieties, chitosan solution and microorganisms that activate heavy metals in the soil to work together, but because it is based on the cooperation with crop varieties, the range of crops used is relatively large. house, while low repeatability
[0006] The Chinese patent application with the application number 20121023142.2 discloses a heavy metal adsorption flocculant, which is an acidic aqueous solution of chitosan and sophorolipids, but its essence is to use the heavy metal adsorption flocculant for the adsorption of heavy metals in the water body. Solve the problem of soil heavy metal pollution from the root
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preparation example Construction
[0033] The preparation method of soil remediation agent of the present invention, comprises the steps:
[0034] a, mixing trimercapto-s-triazine with phosphate to obtain compound A;
[0035] B, add binding agent in compound A, mix, obtain compound B;
[0036] c. Add carbonate to the mixture B and mix to obtain the mixture C;
[0037] d. Add sepiolite to mixture C and mix to obtain mixture D;
[0038] e. The mixture D is granulated and dried to obtain the soil remediation agent of the present invention.
[0039] Further, in order to improve the performance of the soil remediation agent of the present invention, as a preferred solution, fluidized bed steam drying is used for drying in the e step.
[0040] The soil remediation agent of the present invention can effectively reduce the content of heavy metals such as lead and cadmium in the soil. The application method is to sprinkle the soil 1-2 times in each season, and the total application amount is 15-20kg / mu, and then irri...
Embodiment 1
[0043] The preparation of embodiment 1 soil remediation agent of the present invention
[0044] Weigh each component according to the ratio in Table 1, and prepare according to the following steps to obtain the soil remediation agent XF1-XF3 of the present invention.
[0045] a, mixing trimercapto-s-triazine with phosphate to obtain compound A;
[0046] B, add binding agent in compound A, mix, obtain compound B;
[0047] c. Add carbonate to the mixture B and mix to obtain the mixture C;
[0048] d. Add sepiolite to mixture C and mix to obtain mixture D;
[0049] e. The mixture D is granulated and dried to obtain the soil remediation agent of the present invention.
[0050] Table 1
[0051]
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Abstract
The present invention relates to a soil repairing agent and a preparation method thereof, and belongs to the field of agriculture. The technical problem solved by the present invention is to provide a soil repairing agent and a preparation method thereof. The soil repairing agent of the present invention comprises, by weight, 5-20 parts of trithiocyanuric acid, 10-30 parts of a phosphate, 15-30 parts of a carbonate, 45-60 parts of sepiolite, and 2-5 parts of an adhesive, wherein the phosphate is preferably a calcium-magnesium-phosphorus fertilizer and/or phosphorus ore powder, the carbonate is preferably calcium carbonate and/or magnesium carbonate, and the adhesive is preferably carboxymethyl starch, dextrin or diatomite. Further the invention discloses the preparation method of the repairing agent. According to the present invention, the soil repairing agent provides good repairing effects on the heavy metal cadmium-polluted soil, particularly the contents of heavy metals such as lead, cadmium and the like in the soil can be substantially reduced, various components are harmless to human body and environments, and the soil repairing agent has the characteristic of green environmental protection.
Description
technical field [0001] The invention relates to a soil restoration agent and a preparation method thereof, belonging to the field of agriculture. Background technique [0002] During the cycle of nature, a large part of the pollutants in the environment will enter or pass through the soil. Because heavy metal elements in the soil may accumulate in organisms through the food chain, causing long-term accumulation in the human body and causing harm to the human body. There are many sources of heavy metals in soil. In addition to the source of atmospheric dry and wet deposition, agricultural production, sewage irrigation, etc. may also cause heavy metals to pollute the atmosphere, soil and water. [0003] At present, the common method is to repair the soil through chemical agents and methods, mainly based on heavy metal chelating agents, such as chitosan, to convert the exchangeable heavy metals in the soil into stable heavy metals, and reduce the absorption of heavy metals by ...
Claims
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