Method for treating heavy metal copper of soil by means of plant-animal-microorganism combined remediation

A combined restoration and microbial technology, applied in the field of environmental soil pollution control, can solve the problems of adverse changes in the ecological function of the ecosystem, degradation of the ecological environment, and high background value of heavy metal content, achieving easy management and operation, enrichment promotion, and no production. The effect of secondary pollution

Inactive Publication Date: 2018-03-09
LIAONING UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

The heavy metal pollution in the soil of the copper smelter will also cause the background value of the heavy metal content in the soil to be high,

Method used

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  • Method for treating heavy metal copper of soil by means of plant-animal-microorganism combined remediation
  • Method for treating heavy metal copper of soil by means of plant-animal-microorganism combined remediation

Examples

Experimental program
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Effect test

Embodiment

[0030] Embodiment A kind of method of plant-animal-microorganism joint remediation of heavy metal copper in soil

[0031] In this embodiment, the on-site repair site is an abandoned copper smelting plant in Tieling City, the soil pH is 7.32, the organic matter content is 2.3% to 3.7%, the clay content is 2.1%, and the soil heavy metal copper content is 3.09×10 3 mg / kg.

[0032] Carry out test soil leveling at the beginning of April, the site is divided into 3 land samples, marked as the present invention (D2), comparative example 1 (C) and comparative example 2 (D1), before the experiment, need to artificially plow the soil layer 0-20cm The deep land is plowed and leveled.

[0033] (1) The method is as follows

[0034] 1. Throw earthworms into the copper-contaminated soil, water regularly, and keep the soil water content at 40% ± 2%; the earthworms used are Chizi Eisen earthworms, and the amount of earthworms put in is: 90-110 pieces / m 3 .

[0035] 2. Add microbial compoun...

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Abstract

The invention relates to a method for treating heavy metal copper of soil by means of plant-animal-microorganism combined remediation. The method includes putting earthworms into soil contaminated byheavy metal copper, spraying a small quantity of water periodically to keep moisture of the oil, mixing compound microbial agents into topsoil, carrying out rotary tillage and mixing, broadcasting festuca arundinacea seeds and annual bluegrass seeds uniformly, and watering to keep the soil moist. According to the method, plant can absorb copper of soil, and earthworms and compound microbial agentsstrengthen the effect of combined remediation to heavy metal copper of soil. The method has the advantages of good effect and low cost, is easy to manage and operate, is free of secondary pollution,and has wide application prospect.

Description

technical field [0001] The invention relates to a plant-animal-microbe joint restoration method for heavy metal copper in soil, belonging to the technical field of environmental soil pollution control. Background technique [0002] In recent years, with the rapid development of industrial and agricultural production, heavy metal pollution in the environment has become increasingly serious. Due to social activities such as human mining and smelting of minerals, heavy metals enter the soil of the copper smelter and its surrounding areas. The heavy metal pollution in the soil of the copper smelter will also cause the background value of the heavy metal content in the soil to be high, which will cause adverse changes in the ecological functions of the local ecosystem, resulting in the gradual degradation of the ecological environment. [0003] Accumulated over the years, the country is facing very serious problems of land reclamation and ecological restoration. Among them, tai...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10A01B79/02A01B79/00A01K67/033C12N1/20C12N1/14C12R1/38
CPCA01B79/00A01B79/02A01K67/0332B09C1/00B09C1/10B09C1/105B09C2101/00C12N1/14C12N1/20
Inventor 包红旭张欣苏弘治张浩杨华张馨月李良玉吴志忠杨雨萌李丽丹
Owner LIAONING UNIVERSITY
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