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Mineralizer for heavy metal polluted farmland and preparation method thereof

A technology of mineralizers and heavy metals, applied in chemical instruments and methods, agriculture, applications, etc., can solve the problems of crop production reduction, agricultural product quality, soil pollution, human health hazards, etc., and achieve the improvement of heavy metal polluted farmland, broad market prospects, and improved The effect of removing the effect

Active Publication Date: 2020-09-25
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid growth of population and the rapid development of industry, solid waste is continuously piled and dumped on the soil surface, harmful waste water is continuously infiltrated into the soil, and harmful gases and floating dust in the atmosphere are also continuously falling into the soil with rainwater, resulting in soil pollution.
Among them, heavy metal pollution of farmland will lead to reduced crop yields and lower quality of agricultural products, while polluting groundwater and surface water, causing very serious harm to human health
The traditional restoration method of heavy metal polluted farmland is generally mineral adsorption method or bioremediation method. However, the investment cost of mineral adsorption method is high and it is easy to lead to the decline of soil fertility, while the restoration period of bioremediation method is too long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A mineralizer for farmland polluted by heavy metals, comprising the following raw materials in parts by weight: 6 parts of dolomite, 1 part of ammonium acetate, 5 parts of sodium carbonate, 4 parts of water hyacinth powder, 10 parts of castor extract, sodium sulfide 2 parts, lime 2 parts, cyclodextrin 1 part. Wherein, the preparation method of the water hyacinth powder is to drain the fresh water hyacinth and dry it, then chop it into pieces of 0.5cm×0.5cm, and add 13 times the weight of potassium hydroxide with a concentration of 25%. The solution was stirred for 30 minutes, and then the potassium hydroxide solution was neutralized with hydrochloric acid until the pH was neutral, filtered, washed with deionized water, dried under reduced pressure and filtered, and ground to 120 mesh to obtain the water hyacinth powder; The preparation method of the castor extract is as follows: take an appropriate amount of castor stalks and clean them with deionized water, add 16 time...

Embodiment 2

[0030] A mineralizer for heavy metal polluted farmland, comprising the following raw materials in parts by weight: 25 parts of dolomite, 5 parts of ammonium acetate, 20 parts of sodium carbonate, 20 parts of water hyacinth powder, 40 parts of castor extract, sodium sulfide 8 parts, lime 8 parts, cyclodextrin 5 parts. Wherein, the preparation method of the water hyacinth powder is to drain the fresh water hyacinth and dry it, then chop it into pieces of 0.5cm×0.5cm, and add 13 times the weight of potassium hydroxide with a concentration of 25%. The solution was stirred for 30 minutes, and then the potassium hydroxide solution was neutralized with hydrochloric acid until the pH was neutral, filtered, washed with deionized water, dried under reduced pressure and filtered, and ground to 120 mesh to obtain the water hyacinth powder; The preparation method of the castor extract is as follows: take an appropriate amount of castor stalks and clean them with deionized water, add 16 tim...

Embodiment 3

[0037] A mineralizer for heavy metal polluted farmland, comprising the following raw materials in parts by weight: 15.5 parts of dolomite, 3 parts of ammonium acetate, 12.5 parts of sodium carbonate, 12 parts of water hyacinth powder, 25 parts of castor extract, sodium sulfide 5 parts, lime 5 parts, cyclodextrin 3 parts. Wherein, the preparation method of the water hyacinth powder is to drain the fresh water hyacinth and dry it, then chop it into pieces of 0.5cm×0.5cm, and add 13 times the weight of potassium hydroxide with a concentration of 25%. The solution was stirred for 30 minutes, and then the potassium hydroxide solution was neutralized with hydrochloric acid until the pH was neutral, filtered, washed with deionized water, dried under reduced pressure and filtered, and ground to 120 mesh to obtain the water hyacinth powder; The preparation method of the castor extract is as follows: take an appropriate amount of castor stalks and clean them with deionized water, add 16...

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PUM

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Abstract

The invention discloses a mineralizer used for a heavy metal pollution farmland. The mineralizer comprises the following raw materials by weight: 6-25 parts of dolomite, 1-5 parts of ammonium acetate,5-20 parts of sodium carbonate, 4-20 parts of water hyacinth powder, 10-40 parts of castor oil plant extracting solution, 2-8 parts of sodium sulphide, 2-8 parts of lime, and 1-5 parts of cyclodextrin. The invention further discloses a preparation method of the mineralizer used for the heavy metal pollution farmland. The prepared mineralizer has an excellent effect of removing heavy metal ions, the heavy metal pollution farmland is improved while the normal function of the soil is not affected, the remediation period is short, the cost is low, and the mineralizer is green and environmentallyfriendly, and has a broad market prospect.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a mineralizer for heavy metal polluted farmland and a preparation method thereof. Background technique [0002] Soil refers to the loose surface layer on the land surface that is fertile and capable of growing plants. It not only provides mechanical support for plant growth, but also provides fertility elements such as water, fertilizer, air, and heat for plant growth and development. However, with the rapid growth of population and the rapid development of industry, solid waste is continuously piled and dumped on the soil surface, harmful waste water is continuously infiltrated into the soil, and harmful gases and floating dust in the atmosphere are also continuously falling into the soil with rainwater, resulting in soil pollution. . Among them, the pollution of farmland by heavy metals will lead to the reduction of crop yield and the quality of agricultural products, a...

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 刘小红张千李金磊
Owner ANHUI AGRICULTURAL UNIVERSITY