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Mixture for preventing the diffusion of contaminating component and method of preventing the diffusion of contaminating component

A technology for preventing pollution and mixtures, applied in the restoration of contaminated soil, silicon compounds, chemical instruments and methods, etc., can solve problems such as insufficient purification ability of polluted components, increased cost of adsorbents, increased construction costs, etc.

Inactive Publication Date: 2010-10-06
NIPPON SHEET GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the groundwater purification structure of Patent Document 1 does not adsorb arsenic contained in groundwater, but fixes it in the above-mentioned purification area in the form of metallic arsenic. The potential decreases and flows into non-polluted soil again; In addition, the method for purifying polluted groundwater in Patent Document 2 uses a high-end technology that precipitates hydroxides or oxides of rare earth metals on the surface of zeolite, so there is an increase in the cost of the adsorbent, resulting in construction cost increase problem
Furthermore, in any of the groundwater purification technologies in Patent Documents 1 and 2, the rationalization of the water permeability of the above-mentioned purification area is insufficient, the purification ability for the above-mentioned pollutant components is insufficient, and there are problems of lack of stability.

Method used

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  • Mixture for preventing the diffusion of contaminating component and method of preventing the diffusion of contaminating component
  • Mixture for preventing the diffusion of contaminating component and method of preventing the diffusion of contaminating component
  • Mixture for preventing the diffusion of contaminating component and method of preventing the diffusion of contaminating component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] In Example 1, 50 g of a clay-like adsorbent (trade name "Adcera (registered trademark) (slurry)" manufactured by Nippon Plate Glass Co., Ltd.) (specific gravity = 1.2, 41.5 cm 3 ) and the dilution material are mixed at a volume ratio of 0.8:10, thereby forming an anti-pollution component diffusion layer, wherein the clay-like adsorbent consists of 30% by mass of a variety of rare earth compounds mainly composed of cerium, 55% by mass % of water, the balance of 15% by mass of silicon dioxide and other inorganic elements, the dilution material consists of 500cm 3 Glass fiber (short glass fiber with an average fiber diameter of 0.8 μm, "CMLF#208" manufactured by Nippon Plate Glass Co., Ltd.) and 4500 cm 3 It is composed of fine sand (sand with an average particle size of 0.3 mm). It should be noted that, since the above-mentioned diluting material is in the form of a slurry, a method of mixing with the above-mentioned glass fiber and then mixing with the above-mentioned f...

Embodiment 2

[0066]In Example 2, 50 g of clay-like adsorbent (trade name "Adcera (registered trademark) (slurry)" manufactured by Nippon Plate Glass Co., Ltd.) (specific gravity = 1.2, 41.5 cm 3 ) and the dilution material are mixed in a ratio of 1:1 by volume, thus forming an anti-pollution component diffusion layer, wherein the clay-like adsorbent consists of 30% by mass of a variety of rare earth compounds mainly composed of cerium, 55% by mass % of water, the balance of 15% by mass of silicon dioxide and other inorganic elements, the dilution material consists of 500cm 3 Asbestos (cotton-like material of rock material with an average fiber diameter of 4 μm, "S-fiber (registered trademark)" manufactured by Nichika Asbestos Co., Ltd.) and 500 cm 3 It is composed of fine sand (sand with an average particle size of 0.3 mm). It should be noted that, since the above-mentioned diluting material is in the form of a slurry, the method of mixing with the above-mentioned asbestos and then mixing...

Embodiment 3

[0068] In Example 3, 100 g of granular adsorbent (trade name "Adcera (registered trademark) (granular)" manufactured by Nippon Plate Glass Co., Ltd.) (specific gravity = 0.75, 75 cm 3 ) and the dilution material are mixed at a volume ratio of 0.75:10, thus forming an anti-pollution component diffusion layer, wherein the granular adsorbent consists of 40% by mass of a variety of rare earth compounds with cerium as the main component and 60% by mass % of other inorganic elements such as silica, the diluted material consists of 1000cm 3 Sand (average particle size 0.75mm) composition. Table 2 shows the water permeability coefficient, thickness and space velocity of the formed pollution prevention component diffusion layer.

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Abstract

It is intended to provide a mixture for preventing the diffusion of a contaminating component which has a stable and excellent purification ability against a contaminating component contained in contaminated soil compared with the existing techniques for preventing the diffusion of a contaminating component; and a method of preventing the diffusion of a contaminating component. A mixture for preventing the diffusion of a contaminating component comprising an adsorbent which adsorbs the contaminating component contained in contaminated soil and a diluting agent which is blended with the above-described adsorbent at a definite ratio to control the coefficient of water permeability and the thickness, characterized in that the mixture shows a space velocity of water containing the contaminating component as described above of from 1 to 60 (l / hr).

Description

technical field [0001] The present invention relates to a mixture for preventing the diffusion of polluting components for purifying sewage containing polluting components and a method for preventing the diffusion of polluting components, specifically, in the method for preventing the spreading of polluting components, between polluted soil and non-polluted soil A layer composed of the mixture for preventing the diffusion of the polluting components is provided, and the sewage flowing through the polluted soil is purified of the polluting components and then flows into the above-mentioned non-polluted soil. Background technique [0002] At present, as a treatment method for soil containing polluting components such as arsenic, as shown in Non-Patent Document 1, a chemical agent for insolubilizing the above-mentioned polluting components by injecting or injecting and stirring in the distribution range of the polluted soil is used to reduce the above-mentioned pollution. Measu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B01J20/06B01J20/10
CPCB09B1/00B09C1/08E02D31/004B01J2220/4881B01J20/043B01J20/06B01J20/10B01J20/28028B01J2220/42B01J2220/46B01J2220/4887
Inventor 高桥康史
Owner NIPPON SHEET GLASS CO LTD
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