Nickel pollution soil repair agent

A technology of contaminated 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: 2017-04-26
ZHENGZHOU YUANRAN BIOLOGY TECH CO LTD
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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 tobernallite, 8 parts of Eucercia gigantea, 8 parts of naked dried sand vegetables, and modified rosewood 4 parts of rhodoxene; the preparation steps of modified rhodoxene are as follows: ultrafinely pulverizing rhodoxene to 5 μm to obtain rhodoxene powder; , disperse in the ethanol solution whose volume concentration is 92% of the volume concentration of 2 times of the sum of its mass 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 through concentration under reduced pressure, 105°C Dry at low temperature for 3 hours to obtain modified rhodoxene.

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

[0025] (1) respectively pulverizing the gi...

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 tobernallite, 5 parts of Eucercia gigantea, 5 parts of naked and dried sand vegetables, and modified rosewood 7 parts of rhodoxene; the preparation steps of modified rhodoxene are: superfinely pulverizing rhodoxene to 10 μm to obtain rhodoxene powder; , dispersed in an ethanol solution of 95% volume concentration of 3 times the sum of its mass to obtain a suspension slurry; continue to treat the suspension slurry with a power of 220W and a frequency of 34kHz for 40min, remove ethanol by concentrating under reduced pressure, and heat at 110°C Dry at low temperature for 2 hours to obtain modified rhodoxene.

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

[0033] (1) respectively pulverizing the giant vegetal algae and the naked drie...

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 tobernallite, 7 parts of Eucercia gigantea, 7 parts of naked dried sand vegetables, and modified rosewood 5 parts of rhodoxene; the preparation steps of modified rhodoxene are: superfinely pulverizing rhodoxene to 5 μm to obtain rhodoxene powder; , dispersed in an ethanol solution whose volume concentration is 95% of 2 times the sum of its mass, to obtain a suspension slurry; continue to treat the suspension slurry with a power of 200W and a frequency of 34kHz for 40min, remove ethanol through concentration under reduced pressure, and heat at 110°C Dry at low temperature for 2 hours to obtain modified rhodoxene.

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

[0041] (1) respectively pulverizing the giant vegetal algae and the nak...

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PUM

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Abstract

The invention discloses a nickel pollution soil repair agent. The repair agent comprises the following raw materials, by mass, of 22-30 parts of tobermorite, 5-8 parts of giant uronemaconfervicolum, 5-8 parts of hypnea chordacea and 4-7 parts of modified rhodonite, wherein the dosage ratio of the giant uronemaconfervicolum to the hypnea chordacea is 1:1. The preparation of the modified rhodonite comprises super micro-grinding, mixing with N-maleyl chitosan, dispersing, ultrasonic treatment and drying. The giant uronemaconfervicolum and the hypnea chordacea are smashed and screened, and powder is obtained. The tobermorite is calcinated; a dextrotartaric acid aqueous solution is added to conduct soaking treatment; the treated tobermorite is taken out, refrigerated and mixed with the giant uronemaconfervicolum, the hypnea chordacea and the modified rhodonite; and ultrasonic treatment and drying are conducted, and the nickel pollution soil repair agent is obtained. According to the nickel pollution soil repair agent, the compound mode containing four components, namely, the tobermorite, the giant uronemaconfervicolum, the hypnea chordacea and the modified rhodonite is adopted, the content of leached nickel in the soil can be significantly reduced, and meanwhile, secondary pollution to the repaired soil is not caused.

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): C09K17/40B09C1/08
CPCB09C1/08C09K17/40
Inventor 不公告发明人
Owner ZHENGZHOU YUANRAN BIOLOGY TECH CO LTD
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