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Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer

A technology of heavy metal and repairing agent, applied in application, potash fertilizer, organic fertilizer and other directions, can solve the problems of many raw materials, high production cost and low economic benefit, and achieve the effects of simple preparation process, low production cost and good adsorption effect.

Active Publication Date: 2017-06-20
福建玛塔生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned method has improved the repairing effect of the conditioner to heavy metal-contaminated soil to a certain extent, the preparation process of the above-mentioned heavy metal repairing agent is very complicated, requires more raw materials, has higher production costs, and has low yield and low economic benefits. high
At the same time, soils in different regions are polluted by heavy metals differently. For example, the soil in some regions is mainly polluted by lead, and the soil in some regions is mainly polluted by cadmium. However, the existing heavy metal remediation agents are targeted at Not strong, the repair effect needs to be further improved

Method used

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  • Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer
  • Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer
  • Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer

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preparation example Construction

[0045] The preparation method of the slow-release heavy metal restoration fertilizer of the embodiment of the present invention comprises the following steps:

[0046] Step 2-1: Prepare the main material granules

[0047] It is prepared into granules by using at least one of organic fertilizer, potash fertilizer and boron fertilizer as raw material. When carrying out this step, it can be carried out according to the conventional steps of preparing fertilizer granules, or directly purchased on the market.

[0048] Step 2-2: Preparation of excipients

[0049] Take the humic acid and the binder according to the embodiment of the present invention, wherein the humic acid accounts for 30-35% of the total weight of the auxiliary materials, and the binder accounts for 15-20% of the total weight of the auxiliary materials. The humic acid and the binder are mixed in a mixer according to the aforementioned weight percentage to prepare a slurry for use.

[0050] Step 2-3: Film formati...

Embodiment 1－1

[0057] After pretreatment, oyster shells are roasted protectively at a roasting temperature of 600°C and a roasting time of 12 minutes. When feeding, the flow rate of the oyster shells is controlled to be 0.2m 3 / min, the rotational speed of the roasting equipment is 25r / min. After roasting, the water content in the oyster shell is 10% (percentage by weight). The oyster shells were subjected to the first cooling treatment and the second cooling treatment respectively, wherein the natural cooling time of the first cooling treatment was 10 minutes, and the condition of the second cooling treatment was cooling at a cooling rate of 15°C / min for 15 minutes. Then, the oyster shells are crushed, and the oyster shell powders with different particle sizes are screened out by winnowing. Then, oyster shell powders of different sizes were prepared into heavy metal restoration agents, which included primary powder, secondary powder, tertiary powder and quaternary powder. The first-grade ...

Embodiment 1－2

[0059] After pretreatment, the oyster shells are roasted protectively at a roasting temperature of 650°C and a roasting time of 10 minutes. When feeding, the flow rate of the oyster shells is controlled to be 0.3m 3 / min, the rotational speed of the roasting equipment is 30r / min. After roasting, the water content in the oyster shell is 9.5% (percentage by weight). The oyster shells were subjected to the first cooling treatment and the second cooling treatment respectively, wherein the natural cooling time of the first cooling treatment was 14 minutes, and the condition of the second cooling treatment was cooling at a cooling rate of 17°C / min for 11 minutes. Then, the oyster shells are crushed, and the oyster shell powders with different particle sizes are screened out by winnowing. Then, oyster shell powders of different sizes were prepared into heavy metal restoration agents, which included primary powder, secondary powder, tertiary powder and quaternary powder. The first g...

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Abstract

The invention provides an environment-friendly heavy metal repairing agent, application thereof and a slow-releasing heavy metal repairing fertilizer and belongs to the technical field of heavy metal pollution soil repairing. The environment-friendly heavy metal repairing agent includes first-level powder, second-level powder, third-level powder and fourth-level powder which are the screened materials respectively sieved with a 200-400 mesh sieve, a 100-150 mesh sieve, a 20-80 mesh sieve and a 10-18 mesh sieve; on the basis of the weight percent, the weight of the first-level powder, the second-level powder, the third-level powder and the fourth-level powder is respectively 15-25%, 10-20%, 55-68% and 5-10% of the total weight of the heavy metal repairing agent; the metal repairing agent is prepared according to the steps of protectively roasting the oyster shell and then grinding; the roasting temperature is at 600-800 DEG C, the roasting time is 8-12min, the flow rate of the oyster shell entering into the roasting device is 0.2-0.4m3 / min and the rotating speed of the roasting device is at 25-35r / min. The environment-friendly heavy metal repairing agent can be used for effectively repairing the soil polluted by cadmium and has high pertinence and excellent absorbing effect.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal polluted soil, in particular to an environment-friendly heavy metal remediation agent and its application, and slow-release heavy metal remediation fertilizer. Background technique [0002] The influence of natural conditions and long-term high-intensity cultivation, that is, the large-scale application of quick-acting fertilizers, will lead to soil structure deterioration, nutrient imbalance, and soil fertility decline. At the same time, it will also cause serious soil acidification, thereby affecting the effectiveness of fertilizers. Moreover, various industrial waste water, waste gas, etc. make the pollution of heavy metals (cadmium, chromium, mercury, lead) in the soil more and more serious. Heavy metals such as cadmium, chromium, mercury, and lead affect the normal growth of crops on the one hand, and enter into crops on the other hand, affecting human health. [0003] Oys...

Claims

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Application Information

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IPC IPC(8): C09K17/06C05G3/04C05G3/00C09K101/00C09K109/00C05G3/80
CPCC05D1/00C05D9/02C05G3/00C05G3/80C05G5/30C09K17/06C09K2101/00C09K2109/00C05F3/00C05F11/00
Inventor 王永明
Owner 福建玛塔生态科技有限公司
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