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Soil heavy metal deactivator and preparation method thereof

A heavy metal passivator and soil technology, applied in chemical instruments and methods, soil conditioning materials, other chemical processes, etc., can solve problems such as secondary pollution and soil damage, achieve changes in pH and organic carbon content, and reduce soil Effects of increased heavy metal content, degree of oxidation and degree of aromatization

Inactive Publication Date: 2018-05-29
张静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a soil heavy metal passivator and its preparation in view of the problem that the current passivator will cause secondary pollution to the soil and crops in the soil, and cause damage to the soil during the passivation process. method

Method used

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Examples

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preparation example Construction

[0029] A preparation method of a soil metal passivator, comprising the steps of:

[0030] In terms of parts by mass, take 15-20 parts of auxiliary agent A, 20-30 parts of auxiliary agent B, 10-15 parts of auxiliary agent C, 3-8 parts of bovine bone powder, and 5-7 parts of vermicompost , 3-5 parts of montmorillonite were mixed, dried, crushed through an 80-mesh sieve, and the sieved particles C were collected to obtain the soil heavy metal passivator.

Embodiment 1

[0032] Nano-carbon black: purchased from Tiancheng Carbon Black Factory in Jinan City, the carbon black particle size is 20nm, and the specific surface area is 1259mg / g.

[0033] Landfill leachate: taken from Changzhou Solid Waste Treatment Center.

[0034] Furfural residue: purchased from Shenyang Wangtai Furfural Co., Ltd.

[0035] Microcrystalline phosphate rock powder: Microcrystalline phosphate rock powder with a particle size of 18 μm was purchased from Zhejiang Tsinghua Yangtze River Delta Research Institute.

[0036] Beef bone powder: Take fresh beef bones and remove meat and fat, add distilled water at a mass ratio of 1:100, raise the temperature to 98°C and keep for 2 hours, repeat twice, take out the beef bones and dry them in vacuum, crush them through a 100-mesh sieve, and collect the sieved particles A in Carbonize at 580°C, grind, and pass through a 150μm sieve to obtain bovine bone powder.

[0037] Auxiliary A: Take nano-carbon black at a mass ratio of 1:10, ...

Embodiment 2

[0043] Nano-carbon black: purchased from Tiancheng Carbon Black Factory in Jinan City, the carbon black particle size is 50nm, and the specific surface area is 1259mg / g.

[0044] Landfill leachate: taken from Changzhou Solid Waste Treatment Center.

[0045] Furfural residue: purchased from Shenyang Wangtai Furfural Co., Ltd.

[0046] Microcrystalline phosphate rock powder: Microcrystalline phosphate rock powder with a particle size of 18 μm was purchased from Zhejiang Tsinghua Yangtze River Delta Research Institute.

[0047] Beef bone powder: Take fresh beef bones and remove meat and fat, add distilled water at a mass ratio of 1:100, raise the temperature to 100°C and keep for 2 hours, repeat twice, take out the beef bones and dry them in vacuum, crush them through a 100-mesh sieve, and collect the sieved particles A in Carbonize at 590°C, grind, and pass through a 150μm sieve to obtain bovine bone powder.

[0048] Auxiliary A: Take nano-carbon black at a mass ratio of 1:10,...

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Abstract

The invention relates to the technical field soil remediation and particularly relates to a soil heavy metal deactivator and a preparation method of the soil heavy metal deactivator. The soil heavy metal deactivator improves the furfural residue, increases the content of soil humus, improves the activities of polyphenol oxidase, cellulase and peroxidase, improves the activity of the microorganismsin the soil, and promotes the dissolution of the active substance in the soil deactivator, the alkaline substance and a clay mineral modifier inhibit the activity of the heavy metal in the soil, butthe decline of the soil fertility, the soil hardening and the worsen constitutive property are possibly caused, the soil structure is improved, the soil is kept in the loose ventilated state, a microcrystal ground phosphate rock with finer particle size is added in white vinasse and the furfural residue to ferment, the surface activity of the ground phosphate rock is greatly reinforced, the nutrients of the waste are balanced and regulated through fermentation while the acid-base property of the waste is improved, so that the white vinasse and the furfural residue are efficiently utilized, nosecondary pollution is caused, the adsorbing and complexing of the heavy metals in the soil is promoted, and the deactivating effect is achieved.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a soil heavy metal passivator and a preparation method thereof. Background technique [0002] The agricultural resource environment is not only an important material basis for agricultural production, but also directly related to the quality and safety of agricultural products, affecting human health, related to the frequency and intensity of agricultural disasters, and plays a decisive role in the sustainable development of agriculture and rural economy. role. In this context, soil pollution in farmland and vegetable fields has attracted more and more attention. Heavy metals and ecological environment problems have seriously endangered sustainable economic development and biological health. The study found that there are three main factors that cause soil pollution in farmland and vegetable fields: one is that the pollution particles caused by industrial areas and areas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/04C09K109/00C05G3/80
CPCC05B17/00C05G3/80C09K17/40C09K2109/00C05D9/00C05F3/00C05F5/008C05F7/00C05F11/00C05F11/08
Inventor 张静郑薇林凡
Owner 张静
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