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Phytoremediation method for treating cadmium, manganese and chromium compound polluted soil

A compound pollution and phytoremediation technology, which is applied in the field of phytoremediation to control cadmium, manganese and chromium compound polluted soil, can solve the problems that cannot meet the requirements of heavy metal pollution control, and achieve the effect of improving phytoremediation effect, increasing heavy metal content, and strengthening effect

Active Publication Date: 2019-02-22
江门市邑凯环保服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most hyperaccumulative plants can only accumulate one or two heavy metal elements, which cannot meet the requirements for the treatment of multiple heavy metal pollution in actual soil.

Method used

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  • Phytoremediation method for treating cadmium, manganese and chromium compound polluted soil
  • Phytoremediation method for treating cadmium, manganese and chromium compound polluted soil
  • Phytoremediation method for treating cadmium, manganese and chromium compound polluted soil

Examples

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Effect test

Embodiment 1

[0035] A phytoremediation method for controlling cadmium-manganese-chromium composite polluted soil, comprising the following steps:

[0036] (1) In a vegetable field around a mining area in Guangdong, a 2m×4m plot was used for restoration; after the weeds were cleared, biochar was added to the cadmium, manganese, and chromium compound polluted soil, and the amount of biochar applied was cadmium, manganese, and chromium compound pollution 3% of the soil quality, the raw material of the biochar is pine bark and peanut shells with a mass ratio of 2:1;

[0037] (2) Select plump wild Celosia argentea Linn (Celosia argentea Linn) seeds and sow them evenly in seedling trays filled with sand grains, cultivate between 20°C and 35°C, water every day to keep them moist, and you can get Celosia argentea Linn in a week Seedlings; seeds of Arabis Paniculata (Arabis Paniculata) were soaked for 5 hours, placed in a dark place to germinate for 4 days, and raised in the normal soil of the gree...

Embodiment 2

[0042] A phytoremediation method for controlling cadmium-manganese-chromium composite polluted soil, comprising the following steps:

[0043] (1) In a vegetable field around a mining area in Guangdong, a 2m×4m plot was used for restoration; after the weeds were cleared, biochar was added to the cadmium, manganese, and chromium compound polluted soil, and the amount of biochar applied was cadmium, manganese, and chromium compound pollution 3% of the soil quality, the raw material of the biochar is pine bark and peanut shells with a mass ratio of 2:1;

[0044] (2) Select plump wild Celosia argentea Linn (Celosia argentea Linn) seeds and sow them evenly in seedling trays filled with sand grains, cultivate between 20°C and 35°C, water every day to keep them moist, and you can get Celosia argentea Linn in a week Seedlings; seeds of Arabis Paniculata (Arabis Paniculata) were soaked for 5 hours, placed in a dark place to germinate for 4 days, and raised in the normal soil of the greenh...

Embodiment 3

[0049] A phytoremediation method for controlling cadmium-manganese-chromium composite polluted soil, comprising the following steps:

[0050] (1) In a vegetable field around a mining area in Guangdong, a 2m×4m plot was used for restoration; after the weeds were cleared, biochar was added to the cadmium, manganese, and chromium compound polluted soil, and the amount of biochar applied was cadmium, manganese, and chromium compound pollution 3% of the soil quality, the raw material of the biochar is pine bark and peanut shells with a mass ratio of 2:1;

[0051] (2) Select plump wild Celosia argentea Linn (Celosia argentea Linn) seeds and sow them evenly in seedling trays filled with sand grains, cultivate between 20°C and 35°C, water every day to keep them moist, and you can get Celosia argentea Linn in a week Seedlings; seeds of Arabis Paniculata (Arabis Paniculata) were soaked for 5 hours, placed in a dark place to germinate for 4 days, and raised in the normal soil of the gree...

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Abstract

The invention discloses a phytoremediation method for treating cadmium, manganese and chromium compound polluted soil. In the phytoremediation method, super-enriched plants, namely feather cockscomb and arabis paniculata are selected as test plants and planted in the cadmium, manganese and chromium compound polluted soil in an intercropping mode, and the result shows that the feather cockscomb andarabis paniculata can normally grow in the cadmium, manganese and chromium compound polluted soil and have good absorption and enrichment effects on cadmium, manganese and chromium in the polluted soil. At the same time, by applying biomass carbon and a compound soil conditioner, the phytoremediation method improves the soil micro-ecology, strengthens the absorption effect of the feather cockscomb and arabis paniculata on cadmium, manganese and chromium, and improves the remediation efficiency of the cadmium, manganese and chromium compound polluted soil.

Description

technical field [0001] The invention relates to the technical field of soil heavy metal remediation, in particular to a phytoremediation method for treating cadmium, manganese and chromium composite polluted soil. Background technique [0002] Generally speaking, heavy metal elements in soil mainly include cadmium (Cd), chromium (Cr), mercury (Hg), nickel (Ni), arsenic (As), copper (Cu), lead (Pb) and manganese (Mn), etc. These heavy metals have the characteristics of universality, concealment, superficial aggregation, refractory degradation and irreversibility in soil. These characteristics make heavy metal pollution the most difficult to repair among all kinds of soil pollution. Because heavy metal-contaminated soil is very harmful and difficult to repair, how to repair soil polluted by heavy metals has become a key research issue for many scientists around the world. [0003] The methods widely used to control heavy metal pollution under the existing domestic technical c...

Claims

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Application Information

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IPC IPC(8): B09C1/00
CPCB09C1/00B09C1/105B09C2101/00
Inventor 周武李镇江
Owner 江门市邑凯环保服务有限公司
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