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A biomimetic plant based on accelerated transpiration removal of soil heavy metal pollution and its application

A bionic plant and pollutant technology, applied in the field of bionic plant remediation of heavy metal pollution in soil, can solve the problems of low heavy metal removal efficiency, low heavy metal activity, and limited adsorption capacity of bionic plants, and achieve faster migration speed, enhanced absorption effect, and short cycle time Effect

Active Publication Date: 2021-11-30
HENAN QINGSHUIYUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing bionic plants mostly use glass fiber filaments, cloth and cotton yarn as leaf surfaces, and the transpiration is relatively weak; and the structure of bionic plants is a straight barrel type, which transports less water through the bottom upwards, and the adsorption capacity is limited; in addition, in alkaline soil Due to the low activity of heavy metals, the efficiency of bionic plants to remove heavy metals is relatively low.

Method used

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  • A biomimetic plant based on accelerated transpiration removal of soil heavy metal pollution and its application
  • A biomimetic plant based on accelerated transpiration removal of soil heavy metal pollution and its application
  • A biomimetic plant based on accelerated transpiration removal of soil heavy metal pollution and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Implementation Example 1 Remediation of South Acidic Farmland Soil by Biomimetic Plant Technology

[0051] The soil was red soil with a pH value of 6.2, and the total contents of As, Cr, Cu, Mn, Pb, Cd and Zn in the soil were 18.42, 42.59, 5.34, 175.11, 17, 60.48, 1.04 and 22.40 mg / kg, respectively.

[0052] A treatment group and a control group were set up in the case. The treatment group was planted with biomimetic plants with different compound ratios of adsorption fillers (see Table 1 above for the specific compound ratios and numbers), and the control group was not planted with bionic plants, and each treatment set 3 replicates. According to normal plant growth conditions, each treatment was cultivated in an intelligent artificial climate box (RXZ). The cultivation conditions were 14 hours of light and 10 hours of darkness; the temperature was 25°C during the day and 22°C at night; the humidity was 60%; every three days Irrigate with 25 mL of deionized water to re...

Embodiment 2

[0055] Implementation example 2 Remediation of alkaline soil in mining area by bionic plant technology

[0056] The implemented soil is brown calcium soil with a pH value of 8.4, Eh is 120 mV, and the total content of As, Cr, Cu, Mn, Pb, Zn and Cd in the soil are 993.63, 6.51, 471.44, 700.26, 32.34, 167, 0.25 and 39.05 mg kg, respectively -1 .

[0057] The treatment group is to apply activators (titanium dioxide and activated carbon) to the soil first, then plant bionic plants, and fill with adsorption fillers of lime + sepiolite + activated carbon at a ratio of 1:1:1. The control group does not apply activators and does not plant bionic plants . Cultivate with an artificial climate box, and the cultivation conditions, water replenishment time, and water replenishment amount are the same as in Example 1.

[0058]

[0059] The results showed that compared with the control group, the biomimetic plant + active agent treatment removed the total amount of 8 metals and was 469....

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Abstract

The invention relates to a biomimetic plant based on accelerated transpiration removal of soil heavy metal pollution and its application, which includes a biomimetic leaf surface, a straight-through shell, a straight-through middle pole, and the interior is filled with adsorption fillers such as lime (CaO), activated carbon, sepiolite, and zeolite . The invention is a new technology for treating heavy metal pollution in soil based on the principle of environmental geophysics and chemistry and plant water transpiration. Using sunlight to make aluminum foil heat up, accelerate the water absorption and transpiration of biomimetic plants, increase the migration speed of heavy metals in effective state to biomimetic plants, and enhance the enrichment ability of repair devices, which can be applied to the treatment of heavy metal pollution in farmland and sites.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal pollution in soil by bionic plants, in particular to a bionic plant technology for removing heavy metal pollution in soil based on accelerated transpiration, and the production of bionic plants and their application in acidic and alkaline soils with different types of heavy metal pollution. Background technique [0002] It is worth noting that heavy metals such as cadmium, mercury, lead and arsenic in the soil can directly or indirectly enter the human body through the food chain, threatening human health. However, compared with water pollution and air pollution, soil pollution has strong concealment, poor self-purification ability, and long-term risk accumulation time. Due to differences in regions, climates, and soil types, the pollution situation in each region is completely different. Not strong, easy to cause secondary pollution. Therefore, the development of new technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/10B09C1/08
CPCB09C1/08B09C1/105B09C2101/00
Inventor 王佳佳杨伟光蔡斌陈卫平刘威杨阳王洁琳
Owner HENAN QINGSHUIYUAN TECH
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