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A soil heavy metal passivator

A heavy metal passivator and soil technology, applied in soil conditioning materials, chemical instruments and methods, agricultural machinery and tools, etc., can solve the problems of limited natural clay mineral repair ability, difficulty in large-scale promotion and application, and practical impact. Achieve the effect of reducing bioavailability and migration, benefiting growth, ensuring yield and quality

Active Publication Date: 2020-03-31
南京宁粮生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of clay minerals in the passivation remediation of heavy metal-contaminated soils also has some problems.
The restoration ability of natural clay minerals is limited, and to achieve a better restoration effect, the amount of application is often large, resulting in high treatment costs, and the practicability is affected to a certain extent; although modification measures such as acid treatment, heat treatment, and ion exchange can improve its restoration. Efficiency, but these measures often lead to higher costs and are difficult to promote and apply on a large scale

Method used

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  • A soil heavy metal passivator
  • A soil heavy metal passivator
  • A soil heavy metal passivator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The pH value of the tested soil was 7.20, and the total Cd content was 1.42 mg / kg, which belonged to cadmium-contaminated soil. After sowing and raising seedlings of pak choy, use 9 rectangular white plastic pots with a length*width*height of 33*25*15cm to select seedlings with consistent growth for transplanting, plant 10 pak choi in each pot, and each pot of pak choy is one repetition , each group is repeated 3 times, the first group does not take measures, the second group adopts the soil heavy metal deactivator provided by the prior art, and the third group adopts the soil heavy metal deactivator of the present invention. After 30 days of growth, the shoots of the three groups of Chinese cabbage were taken to measure and calculate the yield per mu, protein, soluble solids, Vc content and Cd content. The results are shown in Table 1. The soil heavy metal passivator provided by the prior art refers to the technology provided by the patent CN200910070713.4 (a method fo...

Embodiment 2

[0027] The pH value of the tested soil was 7.20, and the total Cd content was 1.42 mg / kg, which belonged to cadmium-contaminated soil. After sowing and raising seedlings of rapeseed, use 9 rectangular white plastic pots with a length*width*height of 33*25*15cm, select seedlings with consistent growth for transplanting, and plant 10 rapeseeds in each pot, and each pot of rapeseed is a repetition, and each group Repeat 3 times, the first group does not take measures, the second group adopts the soil heavy metal passivator provided by the prior art, and the third group adopts the soil heavy metal passivator of the present invention. After 30 days of growth, the shoots of the three groups of rapeseed were taken to measure and calculate the yield per mu, protein, soluble solids, Vc content and Cd content. The results are shown in Table 2. The soil heavy metal passivator provided by the prior art refers to the technology provided by the patent CN200910070713.4 (a method for in-situ ...

Embodiment 3

[0032]The pH value of the tested soil was 7.20, and the total Cd content was 1.42mg / kg, which belonged to cadmium-contaminated soil. After sowing and seedling lettuce, use 9 rectangular white plastic pots with a length*width*height of 33*25*15cm, select seedlings with consistent growth for transplanting, plant 10 lettuces in each pot, and lettuce in each pot is one repetition, each group Repeat 3 times, the first group does not take measures, the second group adopts the soil heavy metal passivator provided by the prior art, and the third group adopts the soil heavy metal passivator of the present invention. After 30 days of growth, the shoots of the three groups of lettuce were taken to measure and calculate the yield per mu, protein, soluble solids, Vc content and Cd content. The results are shown in Table 3. The soil heavy metal passivator provided by the prior art refers to the technology provided by the patent CN200910070713.4 (a method for in-situ passivation repairing he...

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Abstract

The invention relates to a soil heavy metal pollution treatment technology, and concretely relates to a soil heavy metal deactivator, and a method using the soil heavy metal deactivator to deactivate and repair soil heavy metal pollution. The soil heavy metal deactivator comprises, by weight, 30 parts of peanut shells, 15 parts of red pine needles, 10 parts of sepiolite, 10 parts of fly ash, 5 parts of chitin, 3 parts of sodium metasilicate pentahydrate, 0.4 part of sodium tripolyphosphate, 0.1 part of choline chloride, 1.2 parts of a microbial inoculum and 0.05 part of quicklime. The soil heavy metal deactivator can effectively reduce the heavy metal content of plants to achieve the deactivation and repairing purposes.

Description

technical field [0001] The invention relates to the field of soil heavy metal pollution control, in particular to a soil heavy metal passivator and a method for using the soil heavy metal passivator to passivate and restore soil heavy metal pollution. [0002] technical background [0003] Vegetables can provide nutrients such as various vitamins and minerals necessary for the human body. In addition, there are a variety of phytochemicals in vegetables that are recognized as beneficial to human health, such as carotenoids, dipropylene compounds, methyl sulfide compounds, etc. Many vegetables also contain unique trace elements, which have special effects on the human body. The health benefits, such as lycopene in tomatoes, prostaglandins in onions, etc. my country is the largest producer and consumer of vegetables in the world, with a vegetable planting area of ​​more than 17 million hectares and a total output of more than 500 million tons, making it the third largest vegeta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 刘丽珠张娜卢信范如芹
Owner 南京宁粮生物工程有限公司
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