Method for repairing cadmium-polluted soil/bottom mud using beta vulgaris var.cicla l

A technology of cadmium-contaminated soil and red beetroot, which is applied in the field of phytoremediation of heavy metal-contaminated soil/sediment, can solve the problems of secondary pollution, lower utilization value, and high cost

Inactive Publication Date: 2013-03-13
SHENYANG UNIV
View PDF9 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of engineering measure is a relatively classic soil heavy metal pollution control measure. Although it has the characteristics of thoroughness and stability, it requires a large amount of engineering work, high investment costs, damage to the soil structure, and causes a decline in soil fertility. Therefore, it is not an ideal method for remediation of contaminated soil
There are also methods such as leaching and phytoremediation, which can fundamentally solve the problem of removing heavy metals. Among them, leaching is to use chemical solvents to clean the contaminated soil and wash away heavy metals. In addition to the huge and large amount of engineering, there is also the problem of secondary pollution. How to deal with the toxic solvents washed down is a difficult problem. In addition, the soil after leaching often becomes gravel, which loses the function of the soil itself and greatly reduces use value

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for repairing cadmium-polluted soil/bottom mud using beta vulgaris var.cicla l
  • Method for repairing cadmium-polluted soil/bottom mud using beta vulgaris var.cicla l
  • Method for repairing cadmium-polluted soil/bottom mud using beta vulgaris var.cicla l

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 Pot concentration gradient experiment

[0015] The potting experiment site is in the greenhouse of the South Campus of Shenyang University. The site is located in the center of Shenyang. There are no pollution sources around the experimental site, and it is an area not polluted by heavy metals. It belongs to the humid and semi-humid warm temperate continental climate affected by the monsoon. The potting experiment soil was collected from the surface (0-20cm) soil of the non-polluted area in the Shenyang Ecological Station of the Chinese Academy of Sciences. The soil type is meadow brown soil. 0.12 mg / kg, the mechanical composition of the soil is 21.4% sand, 46.5% silt and 32.1% clay.

[0016] In this experiment, 6 treatments were set up. The above-mentioned clean soil was used to make Cd-contaminated soil. 2 2.5H 2 O (analytical pure) form is mixed with pollutants, and the concentration of Cd is: 0 mg / kg (Cd0), 5 mg / kg (Cd5), 10 mg / kg (Cd10), 25 mg / kg (Cd...

Embodiment 2

[0025] Embodiment 2: the potted experiment of leaf with red spinach in dredging bottom mud

[0026] Bottom mud for test: The dredged bottom mud of Xiheqianmiaozi, Shenyang City, Liaoning Province was used, and its physical and chemical properties were measured by conventional agricultural analysis methods. Its basic physical and chemical properties are shown in Table 1:

[0027] Table 1 Basic physical and chemical properties of the tested sediment

[0028]

[0029] After the bottom mud was naturally air-dried, passed through a 2 mm sieve, mixed evenly, and put into plastic flower pots, each pot was filled with 1.5 kg of bottom mud, and urea (N 0.1 g / kg), potassium chloride (K 2 O 0.05 mg / kg), superphosphate (P 2 o 5 0.05g / kg), all treatments were repeated 3 times.

[0030] After sterilizing the seeds of red beetroot for leaves, grow seedlings in clean soil. When 4-6 true leaves grow, transplant the seedlings of red beetroot for leaves into the above-mentioned cadmium-c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for repairing cadmium-polluted soil / bottom mud using beta vulgaris var.cicla l. According to the method, beta vulgaris var.cicla l is planted in cadminum-polluted soil / bottom mud, and the plant is entirely moved out from the polluted soil / bottom mud when growing to the mature period to achieve the purpose of removing heavy metal cadmium in the soil / bottom mud; the planted vulgaris var.cicla l adopts the beta vulgaris var.cicla l with 4-6 true leaves which is transplanted into the cadmium-polluted soil / bottom mud; and the beta vulgaris var.cicla l planted in the cadmium-polluted soil / bottom mud is planted in a green house, and regularly watered to enable the soil water content to be kept at 60-70 percent of the field water capacity. The method can keep permanent treatment effect, in-situ treatment process, low treatment cost, environmental aesthetics and simple post-treatment.

Description

technical field [0001] The invention relates to the technical field of phytoremediation of heavy metal-contaminated soil / bottom mud, in particular to a method for repairing heavy metal cadmium-polluted soil / bottom mud by using red oyster for leaves. Background technique [0002] Soil heavy metal pollution not only leads to the reduction of food production, but also enters the food chain through plant absorption and endangers human life and health. At the same time, heavy metals in polluted soil, as a potential secondary pollution source, are likely to pollute surface water and groundwater through runoff and leaching . At present, the area of ​​cultivated land polluted by heavy metals such as cadmium, arsenic, chromium and lead in my country is nearly 20 million hectares, accounting for about 1 / 5 of the total cultivated land area. The country's annual output of more than 10 million tons of grain is reduced due to heavy metal pollution. There are also as many as 12 million ton...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10C02F11/02
Inventor 陈苏孙丽娜晁雷孙铁珩
Owner SHENYANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap