Energy plant remediation method for heavy metal contaminated soil and modifying agent for energy plant remediation method

A technology of energy plants and restoration methods, which is applied in the restoration of polluted soil, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of incomplete treatment of heavy metals, easy reactivation of heavy metals, and inhibition of plant growth, etc. Biomass and enrichment effects, effects that contribute to healthy growth, significant economic and environmental benefits

Inactive Publication Date: 2017-07-04
中华全国供销合作总社天津再生资源研究所
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  • Description
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  • Application Information

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Problems solved by technology

However, the engineering treatment method has the problems of complicated implementation and high treatment costs, and the chemical treatment method has the problems of easy reactivation of heavy metals and incomplete treatment of heavy metals
Bioremediation, especially phytoremediation, has attracted widespread attention due to its advantages of simple operation, significant absorption of heavy metals, and the ability to effectively avoid the reactivation of heavy metals. Vegetative growth, reduced restoration effect

Method used

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  • Energy plant remediation method for heavy metal contaminated soil and modifying agent for energy plant remediation method
  • Energy plant remediation method for heavy metal contaminated soil and modifying agent for energy plant remediation method
  • Energy plant remediation method for heavy metal contaminated soil and modifying agent for energy plant remediation method

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preparation example Construction

[0034] The present invention has no special limitation on the preparation method of the improvement agent described in the above technical solution, and the technical solution prepared by a composition well known to those skilled in the art can be adopted, specifically: adjusting the bio-organic fertilizer, peat soil and pH The agent is mixed to obtain the modifier used in the heavy metal polluted soil energy phytoremediation method. In the present invention, the mixture is preferably stored in bags, preferably 50 kg per bag, so as to facilitate the metering during administration.

[0035] In the present invention, the improvement agent described in the above technical solution is applied to the heavy metal polluted soil. In the present invention, the application amount of the improver is preferably based on the amount of organic matter in the soil that is not less than 15g / kg, more preferably 16-20g / kg; Before, the present invention preferably measures the organic matter conte...

Embodiment 1

[0054] Preparation of improver: 86% of plant straw, 10% of animal manure and 4% of biochar are prepared, and fermented to obtain bio-organic fertilizer; % mixed to obtain a soil conditioner.

[0055] The organic matter content in the soil of the test field was measured, and the soil conditioner was applied in the test fields of plots A, B, C and D according to the amount of 50Kg applied per mu.

[0056] Take 3 samples of soil according to the principle of random sampling, and the sampling depth of the sample soil shall not exceed 25cm. The sample soil was ventilated and dried in a cool place, and the soil organic matter content, pH value and heavy metal content parameters were measured after removing impurities. The results are shown in Table 3.

[0057] Table 3 Soil fertility quality table after fertilization

[0058]

[0059] After the test field after the application of the improver in plot A was dried for one day, the plot A was divided into a row of 300cm wide strips...

Embodiment 2

[0061] After the test field after the application of the improver in the B plot was dried for one day, the B plot was divided into 200cm×300cm block land, and the castor was planted in block form.

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Abstract

The invention provides an energy plant remediation method for heavy metal contaminated soil and a modifying agent for the energy plant remediation method. Improved soil is planted with energy plants, and thus, heavy metal in the soil can be absorbed; the modifying agent which comprises, by mass, 80-95% of a bio-organic fertilizer, 3-15% of peat soil and 2-5% of a pH regulator is adopted to control and adjust the soil fertility and the pH value, so that a more favorable growing environment is provided for the plants, the biomass and the enrichment effect of the plants for absorbing the heavy metal are remarkably improved, and accordingly, the plants are promoted to absorb the heavy metal; and in addition, large-scale digestion and save of crop straw and livestock excrement can be achieved, and the method and the modifying agent have prominent economic benefits and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of environmental treatment, and in particular relates to an energy phytoremediation method for heavy metal polluted soil and a modifier used in the method. Background technique [0002] As the consumption of electronic products increases year by year, electronic waste increases year by year. The output of e-waste in my country increased from 2.3 million tons in 2010 to 5.6 million tons in 2015. With the increase of e-waste, the e-waste dismantling industry has developed rapidly. However, due to the backwardness of e-waste dismantling technology and inadequate supervision, the dismantling site has caused serious pollution to local soil, threatening human and ecological health. [0003] The pollution of dismantling sites is mainly heavy metal pollution. The main e-waste dismantling sites in China are Guiyu Town, Shantou, Guangzhou, Longtang Town, Qingyuan, Dali Town, Nanhai, Taizhou City, Zhejiang Province, H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/08C09K17/40C09K101/00C09K109/00
CPCB09C1/105B09C1/08C09K17/40C09K2101/00C09K2109/00
Inventor 武晓燕宋运涛赵斌陈安兰魏沆
Owner 中华全国供销合作总社天津再生资源研究所
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