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Ecological safety type natural permeable reactive barrier medium and preparation method thereof

A technology of reaction grid and ecological safety, which is applied in the direction of chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problems of low capacity of permeable reaction grid, poor removal effect, high cost of repair project, etc. Achieve the effect of improving ecological security, good ecological security, and no secondary pollution

Inactive Publication Date: 2012-05-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides an ecologically safe natural permeable reaction grid medium and a preparation method thereof to solve the problems of poor removal of total hydrocarbons in petroleum-contaminated groundwater and possible problems of repairing petroleum-contaminated groundwater existing in permeable reaction grids Problems of low capacity of osmotic reaction grill and high cost of repair work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Volcanic slag: particle size 0.1mm ~ 1mm, 10 parts;

[0026] Peat soil: particle size 0.1mm~0.6mm, the peat soil is modified by heat treatment, that is, heated at 130°C for 1 hour, 20 parts;

[0027] Attapulgite: particle size 0.1mm-0.6mm, the attapulgite is modified by heat treatment, that is, heated at 130°C for 2 hours, 30 parts.

[0028] At 10°C, the action time is 0.5h. The effect of purifying total petroleum hydrocarbons is more than 90%.

Embodiment 2

[0030] Volcanic slag: particle size 1mm ~ 3mm, 15 parts;

[0031] Peat soil: particle size 0.6mm~1.2mm, the peat soil is modified by heat treatment, that is, heated at 128°C for 3 hours, 6 parts;

[0032] Attapulgite: particle size 0.6mm-1.2mm, the attapulgite is modified by heat treatment, that is, heated at 128°C for 2 hours, 9 parts.

[0033] At 10°C, the action time is 0.5h. The total petroleum hydrocarbon effect is more than 90%.

Embodiment 3

[0035] Volcanic slag: particle size 3mm ~ 5mm, 15 parts;

[0036] Peat soil: particle size 1.2mm~2mm, the peat soil is modified by heat treatment, that is, heated at 130±2°C for 1 to 3 hours, 3 parts;

[0037] Attapulgite: particle size 1.2mm-2mm, the attapulgite is modified by heat treatment, that is, heated at 130±2°C for 1 to 3 hours, 6 parts.

[0038] The action time is 0.5h. The total petroleum hydrocarbon effect is more than 90%.

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Abstract

The invention relates to an ecological safety type natural permeable reactive barrier medium and a preparation method thereof, and belongs to a reactive barrier medium and a preparation method thereof. The medium comprises the following raw materials in part by mass: 5 to 15 parts of cinder with the grain diameter of 0.1 to 5mm, 6 to 25 parts of turfy soil with the grain diameter of 0.1 to 2mm, and 5 to 30 parts of attapulgite with the grain diameter of 0.1 to 2mm, wherein both of the turfy soil and the attapulgite are subjected to heat treatment for modification, namely are heated for 1 to 3hours at the temperature of 130+ / -2 DEG C. The novel compound permeable reactive barrier packing medium has the advantages of high efficiency, economy and high ecological safety, and can play an important role in the petroleum polluted groundwater control and repair process.

Description

technical field [0001] The invention relates to a natural composite reaction medium of a permeable reaction grid, a preparation method thereof, and an application thereof in restoration of petroleum-contaminated groundwater. Background technique [0002] With the rapid development of the petroleum industry worldwide, pollution and omission accidents in the process of petroleum extraction, smelting, transportation and use, as well as the discharge of oily wastewater, sewage irrigation, volatilization of various petroleum products, falling of incomplete combustion, etc. Caused a series of oil pollution problems. According to statistics, about 800,000 tons of oil enter the environment every year around the world, polluting soil, groundwater, rivers and oceans. Oil pollution has become one of the world's number one public hazards. [0003] The survey shows that in most petrochemical areas in my country, the deterioration of groundwater quality caused by petroleum pollution is p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F101/32
Inventor 张玉玲苏小四张莹张晟瑀马桂科宋凡
Owner JILIN UNIV
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