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Nickel contaminated soil recovery agent

A technology of polluted soil and remediation agent, applied in the field of soil remediation, can solve the problems of secondary pollution and low treatment efficiency

Inactive Publication Date: 2017-05-31
ZHENGZHOU BEIDOU COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These physical or chemical methods have their own advantages, but generally there are problems such as low treatment efficiency and easy to cause secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the embodiment of the present invention, a nickel-contaminated soil remediation agent is composed of the following raw materials in terms of parts by mass: 23 parts of diatomite, 8 parts of moss, 8 parts of naked dried sand vegetables, and 4 parts of lapis lazuli; The preparation steps of the method are as follows: ultrafinely pulverize rhodoxene to 5 μm to obtain rhodoxene powder; mix rhodoxene powder with N-maleoylated chitosan 1.8 times its mass, and disperse it in 2 Double the amount of ethanol solution with a volume concentration of 92% to obtain a suspension slurry; continue to treat the suspension slurry with a power of 200W and a frequency of 32kHz for 45min, remove ethanol by concentration under reduced pressure, and dry at 105°C for 3h to obtain lapis lazuli.

[0024] The preparation method of described nickel-contaminated soil remediation agent comprises the following steps:

[0025] (1) Grind moss and naked dried sauerkraut respectively, pass through a 18...

Embodiment 2

[0031] In the embodiment of the present invention, a nickel-contaminated soil remediation agent is composed of the following raw materials in terms of parts by mass: 28 parts of diatomite, 5 parts of moss, 5 parts of naked dried sand vegetables, and 7 parts of lapis lazuli; The preparation steps of the method are as follows: superfinely pulverize rhodoxene to 10 μm to obtain rhodoxene powder; mix rhodoxene powder with N-maleoylated chitosan in an amount 2.3 times its mass, and disperse it in 3 Double the amount of ethanol solution with a volume concentration of 95% to obtain a suspension slurry; continue to treat the suspension slurry with a power of 220W and a frequency of 34kHz for 40 minutes, remove ethanol by concentration under reduced pressure, and dry at 110°C for 2 hours to obtain lapis lazuli.

[0032] The preparation method of described nickel-contaminated soil remediation agent comprises the following steps:

[0033] (1) Grind moss and naked dried sauerkraut respect...

Embodiment 3

[0039] In the embodiment of the present invention, a nickel-contaminated soil remediation agent is composed of the following raw materials in terms of parts by mass: 24 parts of diatomite, 7 parts of moss, 7 parts of naked dried sand vegetables, and 5 parts of lapis lazuli; The preparation steps of the method are as follows: superfinely pulverize rhodoxene to 5 μm to obtain rhodoxene powder; mix rhodoxene powder with N-maleoylated chitosan 2.3 times its mass, and disperse it in 2% of the sum of its mass. Double the amount of ethanol solution with a volume concentration of 95% to obtain a suspension slurry; continue to process the suspension slurry with a power of 200W and a frequency of 34kHz for 40 minutes, remove ethanol by concentration under reduced pressure, and dry at 110°C for 2 hours to obtain lapis lazuli.

[0040] The preparation method of described nickel-contaminated soil remediation agent comprises the following steps:

[0041] (1) Grind moss and naked dried sauer...

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PUM

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Abstract

The invention discloses a nickel contaminated soil recovery agent. The agent comprises, by mass, 23-28 parts of diatomite, 5-8 parts of moss, 5-8 parts of hypnea chordacea and 4-7 parts of lapis lazuli. The use quantity ratio between the moss and hypnea chordacea is 1:1. The preparation method of the lapis lazuli comprises the steps of ultrafinely crushing, mixing with N-maleoyl chitosan, diffusing the mixture, conducting ultrasonic treatment, drying the products; crushing the moss and the hypnea chordacea, sieving the material to obtain powder; incinerating the diatomite, adding D-tartaric acid aqueous solution for soaking treatment, taking out the product, refrigerating the product, mixing the product with the moss powder, hypnea chordacea powder and lapis lazuli, conducting heated ultrasonic treatment, and drying the product to obtain the recovery agent. According to the nickel contaminated soil recovery agent, the mixing of four ingredients of the diatomite, moss, hypnea chordacea and lapis lazuli is used, the content of leaching nickel in the soil is obviously reduced, at the same time, no secondary pollution is triggered to the recovered soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a nickel-contaminated soil remediation agent. Background technique [0002] Soil is an element of the natural environment on which human beings depend and an important resource for agricultural production. It is at the center of the natural environment and carries about 90% of the pollutants in the environment from various sources. At present, the average annual discharge of mercury in the world is about 15,000 tons, 15 million tons of manganese, 3.4 million tons of copper, 5 million tons of lead, and 1 million tons of nickel, resulting in varying degrees of heavy metal pollution in farmland soil around the world. [0003] Nickel is a component of urease in plants, which is closely related to nitrogen metabolism. It can promote seed germination, plant growth and development, increase production, and is related to plant resistance to toxicity and enhance plant disease re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/08C09K101/00
CPCC09K17/40B09C1/08C09K2101/00
Inventor 不公告发明人
Owner ZHENGZHOU BEIDOU COMM TECH
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