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Garden landscape construction method for moderate-light heavy metal contaminated soil

A technology for polluting soil and heavy metals, applied in the field of soil pollution control and garden construction, can solve problems such as being unsuitable for human consumption, lack of treatment measures, delaying farmers to plant food, etc. good effect

Active Publication Date: 2020-07-31
WANYUAN ECOLOGY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, plants grow slowly, and are generally used to absorb heavy metals. Plants are not suitable for human consumption. Therefore, it is very delayed for farmers to grow food for some contaminated crops, and there is a lack of simple and effective specific treatment measures in practical applications.

Method used

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  • Garden landscape construction method for moderate-light heavy metal contaminated soil
  • Garden landscape construction method for moderate-light heavy metal contaminated soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1, for an area of ​​garden planning that lacks a source of soil:

[0030] Include the following steps:

[0031] Step 1. Soil sealing and isolation: transfer a certain amount of soil polluted by moderate to light heavy metals to the area where the garden landscape will be built for sealing, so as to avoid secondary pollution of the soil or affect the soil quality of the nearby soil;

[0032] Step 2. Soil detection: Sampling the above soil, and measuring and recording the heavy metal content of the sampled soil by a heavy metal content measuring instrument. The content of heavy metal elements;

[0033] Step 3, plant variety screening: according to the climate of the actual geographical location, the heavy metal-enriched plants or / and heavy metal-tolerant plants suitable for planting in the place are screened (for reasons such as the climate and geographical location of each place, the adaptability of each plant is different , it is necessary to select plants tha...

Embodiment 2

[0039] Example 2, for directly dividing the polluted land into the area of ​​landscaping improvement:

[0040] Step 1. Soil sealing and isolation: Enclosure and sealing the areas with medium to light heavy metal pollution soil to avoid secondary pollution caused by the soil;

[0041] Step 2. Soil detection: Sampling the above soil, and measuring and recording the heavy metal content of the sampled soil by a heavy metal content measuring instrument. The content of heavy metal elements;

[0042] Step 3, plant variety screening: according to the climate of the actual geographical location, the heavy metal-enriched plants or heavy metal-tolerant plants suitable for planting in the place are screened (according to the climate, geographical location and other reasons of each place, the adaptability of each plant is different, and it needs Combined with the local climate and geographical location to select plants that are suitable for planting and have certain ornamental value);

[0...

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Abstract

The invention belongs to the technical field of soil pollution treatment and garden construction, and particularly relates to a garden landscape construction method for moderate-light heavy metal contaminated soil. The method comprises the following steps: 1, soil sealing and isolating; 2, soil detection; 3, plant variety screening; and 4, planting plants: planting the heavy metal enriching or tolerant plants screened in the step 3. According to the method, the polluted soil is used as engineering terrain modeling and planting soil in garden design; corresponding isolation measures are taken and heavy metal enrichment plants are planted for a long time to reduce the content of heavy metals in the soil; the garden planning can be performed for more than ten years to dozens of years, or evenhundreds of years, so that the plants have sufficient time to purify the soil. The method can fully utilize the contaminated soil, and the contaminated soil can be purified by the plants in the long-term growth process of the plants on the premise that no extra site is occupied.

Description

technical field [0001] The invention belongs to the technical field of soil pollution control and garden architecture, and in particular relates to a method for constructing garden landscapes in soils polluted by moderate to light heavy metals. Background technique [0002] The situation of heavy metal pollution in soil in many places at home and abroad is serious, which directly threatens human health and has attracted widespread attention. Various heavy metal-contaminated soil remediation technologies have become research hotspots. Phytoremediation is considered to be one of the better measures to remediate heavy metal-contaminated soil (mainly lightly polluted) because of its safety and cheapness, but the remediation period is often long. The soil slightly polluted by heavy metals has a large amount and is not suitable for chemical treatment, which has become a difficult point for treatment. [0003] There are generally two sources of urban heavy metal pollution: natural...

Claims

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Application Information

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IPC IPC(8): B09C1/00
CPCB09C1/105
Inventor 张旭赵敏益吕潮松庄政睿方志
Owner WANYUAN ECOLOGY GRP
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