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A method for remediating heavy metal pollution in loess with pulsed charcoal liquid

A heavy metal and loess technology, applied in the fields of soil remediation and environmental pollution control, can solve the problems of large influence of acidity and alkalinity of solution, large dosage of chemicals, poor fluidity, etc., to achieve simple equipment, promote smooth flow, and large pore volume. Effect

Inactive Publication Date: 2016-03-30
太原环清信立科技有限公司
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Problems solved by technology

[0004] The present invention mainly aims at the problems of high cost, low efficiency, large dosage of chemicals, poor fluidity and great influence of solution acidity and alkalinity in the existing soil remediation technology, and provides a method for remediating heavy metal pollution in loess with pulsed charcoal liquid, It can effectively adsorb heavy metal ions in loess and eliminate the toxicity of heavy metal ions

Method used

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  • A method for remediating heavy metal pollution in loess with pulsed charcoal liquid

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Embodiment 1

[0026] A method for repairing heavy metal pollution in loess with pulsed charcoal liquid, see figure 1 , for loess sites with a cadmium concentration of 0.2-0.4g / kg, the site pollution width is 5.6m, the pollution depth is 2.2m, and the length is 30.0m.

[0027] (1) Dig a trench 2 on both sides of the width direction of the loess area 1 to be repaired. The width of the trench is 2.0m, the length is 5.0m, and the depth is 2.5m;

[0028] (2) Install the water lifting pipe 3 vertically in the groove 2 on one side of the loess area 1 to be repaired. 18 water-lifting branch pipes 6, the vertical distance between two adjacent water-lifting branch pipes 6 is 1.5m, a number of water-lifting branch pipe holes 7 are opened on the water-lifting branch pipes 6, and the length of each water-lifting branch pipe 6 is 1.5~ 1.8m, the diameter is 55-80mm, the diameter of the water-lifting branch pipe hole 7 is 10-15mm, and the distance between the water-lifting branch pipe holes is 70-100mm; ...

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Abstract

The invention relates to a technology for remedying heavy metal polluted soil by an impulse carton liquid, belongs to the technical field of soil remediation for environmental pollution improvement, and mainly solves the problems that a conventional soil remediation technology is high in cost, low in efficiency and poor in flowability, needs high pharmaceutical dosage and is easily influenced by the acid-base property of a solution. The technology for remedying heavy metal polluted soil by the impulse carton liquid comprises steps as follows: (1), trenches are dug on two sides of a to-be-remedied loess area respectively; (2), a water lifting pipe and water lifting branch pipes are mounted in the trench on one side; (3), a water injection pipe and water injection branch pipes are mounted in the trench on the other side; (4), water is injected into and pumped out of the to-be-remedied loess area; (5), diluted acid is injected and pumped out of the to-be-remedied loess area; and (6), superfine powdered carbon stabilizing slurry is injected into the to-be-remedied loess area. The technology has the advantages of high efficiency, low cost and the like.

Description

technical field [0001] The invention relates to a method for repairing heavy metal pollution in loess with pulsed charcoal liquid, and belongs to the technical field of soil restoration in the field of environmental pollution control. Background technique [0002] Heavy metal pollution in soil has been paid more and more attention in recent years, and it is one of the important issues in the field of environmental protection. In the Loess Plateau area of ​​the inland provinces in northern China, there are a large number of hidden dangers of heavy metal pollution in the loess. Through the survey of heavy metal pollution in inland loess areas, it was found that the main excessive heavy metal elements are: cadmium, arsenic, vanadium, manganese, nickel, copper, selenium, lead and so on. Among the rural loess pollution in inland provinces, the main heavy metal pollution elements are: cadmium, arsenic, and copper. The above-mentioned heavy metal pollution is concealed and laggin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00
Inventor 张弛游志勇闫丽梅游志宏张悦司耀强
Owner 太原环清信立科技有限公司
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