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Soil conditioner capable of reducing activity of heavy metals, preparation method and soil improvement method

A soil conditioner and heavy metal technology, applied in the field of soil, can solve the problems of not being widely used, serious harm to the human body, low operability, etc., and achieve the effects of strong operability, low cost, and reducing the amount of chemical fertilizers used.

Inactive Publication Date: 2018-05-18
GUANGDONG RES INSTITITUTE OF PETROCHEM & FINE CHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very difficult to treat a large area of ​​polluted farmland. The crops grown in farmland polluted by heavy metals are harmful to the human body. The existing heavy metal treatment methods have the disadvantages of high cost and low operability. widely used

Method used

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  • Soil conditioner capable of reducing activity of heavy metals, preparation method and soil improvement method
  • Soil conditioner capable of reducing activity of heavy metals, preparation method and soil improvement method

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preparation example Construction

[0037] Such as figure 1 Shown, the preparation method of the soil conditioner that reduces heavy metal activity according to the embodiment of the present invention, comprises the following steps:

[0038] Step S10, pulverizing and mixing the chitosan / graphene oxide composite material, silicate, and slaked lime uniformly to obtain a mixed material;

[0039] Step S20, sintering the mixed material at high temperature;

[0040] Step S30, crushing the high-temperature sintered material, adding bentonite, biomass waste, organic fertilizer and humic acid, mixing evenly, drying and crushing.

[0041] Step S40, adding a binder to form granules to obtain the soil conditioner with reduced activity of heavy metals.

[0042] In other words, according to some specific embodiments of the present invention, chitosan / graphene oxide composite material, silicate, slaked lime, bentonite, biomass waste, organic fertilizer and humic acid are used as raw materials to make soil conditioners that r...

Embodiment 1

[0055]First, 20 parts of chitosan / graphene oxide composite material, 5 parts of silicate, and 15 parts of slaked lime were selected and mixed after pulverization, wherein the slaked lime was passed through a 40-mesh sieve.

[0056] The mixed material is sintered at a high temperature of 500°C.

[0057] Secondly, crush the material after high-temperature sintering, add 3 parts of bentonite, 5 parts of biomass waste, 20 parts of organic fertilizer and 1 part of humic acid after crushing, mix well and then dry and pulverize. The drying temperature can be 45°C.

[0058] Then, 3 parts of binder were added to the dried mixed material to form granules to obtain the soil conditioner B1 for reducing the activity of heavy metals.

Embodiment 2

[0060] First, 25 parts of chitosan / graphene oxide composite material, 8 parts of silicate, and 20 parts of slaked lime were selected and mixed after pulverization, wherein the slaked lime was passed through a 40-mesh sieve.

[0061] The mixed material is sintered at a high temperature of 500°C.

[0062] Secondly, crush the material after high-temperature sintering, add 4 parts of bentonite, 7 parts of biomass waste, 22 parts of organic fertilizer and 2 parts of humic acid after crushing, mix well and then dry and pulverize. The drying temperature can be 45°C.

[0063] Then, 3 parts of binder were added to the dried mixed material to form granules to obtain the soil conditioner B2 for reducing the activity of heavy metals.

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Abstract

The invention provides a soil conditioner capable of reducing activity of heavy metals, a preparation method and a soil improvement method. The soil conditioner capable of reducing activity of heavy metals is prepared from components in parts by weight as follows: 20-30 parts of a chitosan / graphene oxide composite, 5-10 parts of silicate, 15-25 parts of slaked lime, 3-5 parts of bentonite, 5-10 parts of biomass waste, 20-25 parts of organic fertilizer, 1-3 parts of humic acid and 1-3 parts of a binder. The soil conditioner capable of reducing activity of heavy metals has the advantages of lowcost, high operability and the like and can prevent the heavy metals from being activated again, the usage amount of chemical fertilizer is reduced and the planting cost is saved.

Description

technical field [0001] The invention relates to the field of soil technology, and more specifically, relates to a soil conditioner for reducing the activity of heavy metals, a preparation method and an improvement method thereof. Background technique [0002] With the development of science and technology, garbage classification has not been popularized, and soil heavy metal pollution is becoming more and more serious, which is seriously harmful to people's health and sustainable development. It is very difficult to treat a large area of ​​polluted farmland. The crops grown in farmland polluted by heavy metals are harmful to the human body. The existing heavy metal treatment methods have the disadvantages of high cost and low operability. widely used. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a soil conditioner for reducing the activity of heavy metals, which has the advantages of low cost and strong operability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/08C09K101/00
CPCB09C1/08C09K17/40C09K2101/00
Inventor 肖盈麦裕良李彬张靖雯吕冉林蓝
Owner GUANGDONG RES INSTITITUTE OF PETROCHEM & FINE CHEM ENG
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