Heavy metal stabilizer for removal of heavy metal pollution and its using method

A heavy metal stabilizer and heavy metal technology, applied in the field of environmental governance, can solve the problems of high price and poor stabilization effect, and achieve the effects of fast precipitation, reduced production cost, and stable chemical properties

Inactive Publication Date: 2012-11-21
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a novel heavy metal stabilizer for removing heavy metal pollution and its application method, which can overcome the shortcomings of exi

Method used

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  • Heavy metal stabilizer for removal of heavy metal pollution and its using method
  • Heavy metal stabilizer for removal of heavy metal pollution and its using method
  • Heavy metal stabilizer for removal of heavy metal pollution and its using method

Examples

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Effect test

Embodiment 1

[0050] Take a certain amount of soil from an industrial park, dry the soil, dry it, crush it, and reserve it; take 150g of soil, add Cu, Zn, and ion solutions, stir and mix thoroughly, and obtain simulated heavy metal-polluted soil, the content of which is Cu: 2000mg / kg; Zn: 2000 mg / kg. Add 100ml of water to dissolve 1.5g of the heavy metal stabilizer lignin-based sodium dithiocarbamate, add it to the simulated heavy metal-contaminated soil, stir, and mix evenly; add 1g of EDTA, 67.5g of cement, and 7.5g of fly ash, and mix; Cover with a plastic film at high temperature, keep the soil moist, maintain for 5 days, take samples according to the standard, and detect the leaching concentration of heavy metals in the soil.

[0051] The heavy metal stabilizer of the present invention is used to process simulated heavy metal-contaminated soil, and the detection results of the leaching concentration of each heavy metal are shown in Table 1. The results show that the leaching concentrat...

Embodiment 2

[0055] Take some soil from an industrial park, air-dry, dry, and crush the soil, and set aside; take 150g of soil, add Cu and Zn ion solutions, stir and mix thoroughly, and obtain simulated heavy metal-polluted soil, the contents of which are Cu: 2000mg / kg; Zn : 2000mg / kg. Add 0.75g of the heavy metal stabilizer lignin-based potassium dithiocarbamate, add 100ml of 10% ethanol to dissolve, add to the simulated heavy metal polluted soil, stir, mix well; add 2g of phosphoric acid, 42g of cement, mix and stir; at ambient temperature Cover it with a plastic film to keep the soil moist, maintain it for 3 days, take samples according to the standard, and detect the leaching concentration of heavy metals in the soil.

[0056] The heavy metal stabilizer of the present invention is used to process simulated heavy metal-contaminated soil, and the detection results of the leaching concentration of each heavy metal are shown in Table 2. The results show that the leaching concentration of h...

Embodiment 3

[0060] Take some soil from an industrial park, dry it, dry it, crush it, and set it aside; take 150g of soil, add Cu, Zn, Pb, Ni ion solution, stir and mix thoroughly, and obtain simulated heavy metal polluted soil, the contents of which are respectively Cu: 2000mg / kg; Zn: 2000mg / kg, Pb: 200mg / kg, Ni: 200mg / kg. Add 13g of sodium lignin-based dithiocarbamate and 9.5g of ammonium lignin-based dithiocarbamate to the heavy metal stabilizer, add 500ml of 70% ethanol to dissolve, add to the simulated heavy metal-contaminated soil, stir and mix evenly; add 1.5g of EDTA , fly ash 1.5g, mixed and stirred; covered with a plastic film at ambient temperature, kept the soil moist, cured for 5 days, sampled according to the standard, and detected the leaching concentration of heavy metals in the soil.

[0061] The heavy metal stabilizer of the present invention is used to process simulated heavy metal-contaminated soil, and the leaching concentration detection results of each heavy metal a...

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Abstract

The invention relates to a heavy metal stabilizer for removal of heavy metal pollution and its using method. The heavy metal stabilizer contains the compound lignin-based dithiocarbamate, which is a combination of one or more of lignin-based sodium dithiocarbamate, lignin-based potassium dithiocarbamate, or lignin-based ammonium dithiocarbamate, and can be used for treatment of heavy metal pollution. After treatment with the heavy metal stabilizer provided in the invention, the heavy metal content can meet the requirements of environmental protection standards. A heavy metal ion chelate formed after the treatment is chemically stable and is difficult to cause secondary pollution. Meanwhile, the treatment cost of heavy metal pollution can be significantly reduced.

Description

technical field [0001] The invention belongs to the field of environmental treatment and relates to the treatment of heavy metal pollution, in particular to a heavy metal stabilizer for removing heavy metal pollution and a use method thereof. Background technique [0002] Heavy metals are usually acutely or chronically toxic, and sometimes poison the human body in more complex ways, such as causing cancer or indirectly causing certain diseases. Among all kinds of hazardous waste, heavy metal waste occupies a large proportion. They harm the human body and other living organisms in a variety of ways. Especially in the process of safe landfill disposal, due to the non-degradability of heavy metals, it will exist in the landfill for a long time, posing a great potential threat to the environment around the landfill. Heavy metals in soil or irrigation water can adversely affect plant growth and accumulate in leaves, stems or roots of plants so that their effects can be felt thr...

Claims

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Application Information

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IPC IPC(8): A62D3/33C07G1/00B09C1/08C02F9/04A62D101/43C02F101/20
Inventor 葛圆圆
Owner GUANGXI UNIV
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