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Soil heavy mental adsorbent

A technology for heavy metals and adsorbents is applied in the field of soil conditioners and their preparations that can greatly reduce the concentration of heavy metals in soil solutions, and can solve the problems of soil fertilizer pollution, difficult to completely eliminate, industrial pollution, etc., and achieve the effect of solving soil compaction.

Inactive Publication Date: 2014-02-26
厦门耕农集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And once the soil is polluted by heavy metals, it is difficult to completely eliminate
[0008] 2.3 Soil fertilizer pollution
However, phytoremediation is still in the experimental stage, and large-scale on-site restoration cannot be carried out on a large scale. In the face of increasingly serious heavy metal pollution, it is imperative to improve the technology and improve the efficiency of phytoremediation

Method used

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  • Soil heavy mental adsorbent

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preparation example Construction

[0050] The preparation method of the soil heavy metal adsorbent is as follows: Step 1: After the components are fully stirred according to the above mass percentages, they are placed in a workshop for fermentation at a temperature above 10°C. Step 2: After 15 days of fermentation, it can be packaged.

[0051] The method of using the soil heavy metal adsorbent is as follows: apply 500-600 kilograms of soil heavy metal adsorbent per mu, and evenly distribute it in the farmland. The more the better, let the heavy metal adsorbent be fully mixed with the soil, and let it stand for 3 days after mixing. During this period, the water in the paddy field will not enter or exit.

[0052] The soil heavy metal adsorbent of the present invention will automatically perform the following effects in the soil: the addition of the heavy metal adsorbent will increase the pH value of the soil solution and reduce the reduction potential, and will cause a large amount of heavy metal elements in the ...

Embodiment 1

[0057] [1] Soil heavy metal adsorbent and preparation method thereof

[0058] The soil heavy metal adsorbent comprises the following components, the mass percent of each component is 28.5% peat, 18.9% natural humus, 18.0% oyster shell powder, and 34.6% biochar. The preparation method of this soil heavy metal adsorbent is as follows:

[0059] Step 1: The mass percentage of each component is 28.5% peat, 18.9% natural humus, 18.0% oyster shell powder, and 34.6% biochar according to the mass percentage, and placed in the workshop at a temperature of 22°C.

[0060] Step 2: After fully stirring the above-mentioned raw materials and fermenting for 15 days, it can be packaged.

[0061] Measure the heavy metal content in the soil of the test field before use: choose the topsoil from the farmland polluted by heavy metals in Zijin Mountain, Shanghang County, Longyan, Fujian Province as the test soil, and use A and B as the sample codes. The heavy metals contained are cadmium, chromium, ...

Embodiment 2

[0086] [1] Soil heavy metal adsorbent and preparation method thereof

[0087] The soil heavy metal adsorbent comprises the following components, the mass percentage of each component is 22.8% peat, 26.6% natural humus, 10.2% oyster shell powder, and 40.4% biochar. The preparation method of this soil heavy metal adsorbent is as follows:

[0088] Step 1: The mass percentage of each component is 22.8% peat, 26.6% natural humus, 10.2% oyster shell powder, and 40.4% biochar according to the mass percentage, and placed in the workshop at a temperature of 26°C.

[0089] Step 2: After fully stirring the above-mentioned raw materials and fermenting for 15 days, it can be packaged.

[0090] Measure the heavy metal content in the soil of the test field before use: choose the topsoil from the farmland polluted by heavy metals in Zijin Mountain, Shanghang County, Longyan, Fujian Province as the test soil, and use C and D as the sample codes. The heavy metals contained are cadmium, chromiu...

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Abstract

The invention relates to a soil heavy mental adsorbent. The adsorbent comprises the following components in percentage by mass: 22.8-34.2% of peat, 11.2-26.6% of natural humus, 10.2-25.8% of oyster shell powder and 28.8-40.4% of biochar. A preparation method of the soil heavy mental adsorbent comprises the steps: fully stirring the components in percentage by mass, putting in a workshop and fermenting for 15 days at the temperature of above 10 DEG C and packing. A using method of the soil heavy mental adsorbent comprises the following steps: applying 500-600 kilograms of the soil heavy mental adsorbent each mu, fully mixing the soil heavy mental adsorbent with soil and standing for 3 days, wherein in the meantime, water in the paddy field is neither fed nor discharged. The situation that heavy metal elements adsorbed by the soil heavy mental adsorbent are freed due to the cation exchange capacity cannot happen, so that the heavy metal concentration in the soil solution is reduced by a large margin, very little heavy metal elements in the solution can be absorbed by plant roots and the heavy metal content of agricultural products produced in the soil environment is extremely low naturally and below the safe content regulated in China.

Description

technical field [0001] The invention relates to a soil conditioner, in particular to a soil conditioner which greatly reduces the concentration of heavy metals in soil solution and a preparation method thereof. Background technique [0002] The increase of soil heavy metals, especially cadmium content, will significantly reduce the number of bacteria and nitrogen-fixing bacteria in the soil, destroy chlorophyll in plants, reduce the absorption of water and nutrients by roots, and inhibit the fixation of nitrogen by roots and the activity of nitrate reductase. After cadmium enters the human body through the food chain, it reacts strongly with specific proteins and various enzymes in the human body to inactivate them, and accumulates in certain organs of the human body to cause chronic poisoning. At the same time, it also interferes with the normal function of copper, cobalt and zinc in the body. Metabolism, induce various diseases, and even death. [0003] 2 sources of heavy...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 刘佑麟
Owner 厦门耕农集团有限公司
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