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Method for restoring magnesium polluted soil through paper mulberries

A technology of polluted soil and tree building, applied in the field of phytoremediation of contaminated soil, can solve the problems of few researches on the remediation of alkaline earth metal contaminated soil, and achieve the effects of rapid natural reproduction and growth, water and soil conservation, and strong germination

Inactive Publication Date: 2015-11-25
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At home and abroad, a lot of research has been done on the phytoremediation of heavy metal and organic pollutant soils. Therefore, there are many technologies that can be used to treat heavy metal-contaminated soils. There are very few studies on the remediation of alkaline-earth metal-contaminated soils. Also rarely reported

Method used

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  • Method for restoring magnesium polluted soil through paper mulberries
  • Method for restoring magnesium polluted soil through paper mulberries

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The experiment site is located in the Shenyang Ecological Station of the Chinese Academy of Sciences, which is located in the center of the Lower Liaohe Plain, about 35km away from Shenyang City, and belongs to the warm temperate zone semi-humid continental climate. Potted plants were used to simulate magnesium-contaminated soil, and the soil was collected at this experimental station. The pH of the soil is 6.8, the organic matter is 2.64%, the total carbon content is 17.8g·kg-1, the total nitrogen content is 1.1g·kg-1, and the total phosphorus is 0.35g·kg-1.

[0024] The collected soil was air-dried indoors, and after a week, it was ground and mixed evenly. Weigh 3240g of uncontaminated soil in each pot, add 360g of magnesium ore dust (or ore, ore is collected from the magnesite mining area rock discharge field), and the magnesium ore dust (mineral powder is MgO, or ore) is mixed evenly and loaded Into the pot, make the magnesium content in the soil 10%. There is one...

Embodiment 2

[0026] The experimental site is the same as in Example 1.

[0027] The collected soil was air-dried indoors, and after a week, it was ground and mixed evenly. Every pot claims 2520g uncontaminated soil, adds 1080g magnesium ore dust (magnesium ore dust is the same as embodiment 1), it is mixed homogeneously, packs in the pot. There is one plant per pot of mulberry saplings, which are purchased from Dalian Zhongzhi Environmental Biotechnology Co., Ltd. First pass through the slow seedlings. The slow seedlings are first moved into uncontaminated soil and cultivated in a greenhouse at a temperature of 25-30°C. Watering 1-2 times a week according to the actual situation of soil moisture ensures that the soil moisture remains at About 60-80% of the field water holding capacity, grow for 30 days. Then transplant it into a pot and add 1000 g of water. Placed in a lighthouse for cultivation. The photoperiod is 16h / 8h, and the room temperature is 25°C. Regularly spray 400ml of wat...

Embodiment 3

[0029] The experimental site is the same as in Example 1.

[0030]The collected soil was air-dried indoors, and after a week, it was ground and mixed evenly. Every pot claims 1800g uncontaminated soil, adds 1800g magnesium ore dust (magnesium ore dust is the same as embodiment 1), it is mixed homogeneously, packs in the pot. There is one plant per pot of mulberry saplings, which are purchased from Dalian Zhongzhi Environmental Biotechnology Co., Ltd. First pass through the slow seedlings. The slow seedlings are first moved to the uncontaminated soil and cultivated in a greenhouse at a temperature of 25-30°C. Watering 1-2 times a week according to the actual situation of soil moisture to ensure soil moisture Keep at 80% of field water capacity and grow for 30 days. Then transplant it into a pot and add 1000 g of water. Placed in a lighthouse for cultivation. The photoperiod is 16h / 8h, and the room temperature is 25°C. Regularly spray 400ml of water every week. After cultu...

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Abstract

The invention relates to a polluted soil plant restoring technology, in particular to a method for restoring magnesium polluted soil through paper mulberries. Particularly, the paper mulberries are planted in the magnesium polluted soil, and magnesium in the polluted soil is absorbed and used through roots, so that the magnesium polluted soil is restored. According to the method, novel varieties of plant resources are developed for plant restoring of the magnesium polluted soil in the soil, and a good way for being rich is provided; by using the paper mulberries for restoring the magnesium polluted soil, the method is simple to operate, small in work amount, capable of not damaging physicochemical properties of the soil, free of secondary pollution and capable of obtaining good ecological, social and economic benefits while treating the magnesium polluted soil.

Description

technical field [0001] The invention relates to a phytoremediation technology for contaminated soil, in particular to a method for remediating magnesium-contaminated soil by using mulberry trees. Background technique [0002] The development and utilization of mineral resources provides human beings with various materials and energy, but also brings many environmental problems. Soil pollution is a prominent problem in mining activities. Magnesium is an important resource in the fields of metallurgy, building materials, chemical industry, light industry, agriculture and animal husbandry. China's magnesite reserves rank first in the world, mainly concentrated in Haicheng and Dashiqiao, Liaoning. During the mining and sintering of magnesite, a large amount of dust is produced, causing serious pollution to the local atmosphere, soil and ecological environment. Changes in soil physical and chemical properties caused by magnesite dust pollution have led to a sharp decline in the ...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
Inventor 贾春云台培东焦阳李晓军巩宗强刘宛
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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