Technology of rapidly processing abrupt arsenic-polluted river water body in situ by using water-permeable adsorption dam

A technology of in-situ treatment and permeable dam, applied in the fields of water pollutants, water/sewage treatment, water/sludge/sewage treatment, etc. problem, to achieve the effect of good treatment effect, fast treatment speed and low treatment cost

Inactive Publication Date: 2015-01-14
BEIJING NORMAL UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

The former can only physically block the spread of pollution and cannot be cured; the latter is costly and will cause serious ecological disasters and secondary pollution of sediment, and subsequent treatment is extremely difficult. It can be seen that the existing conventional water treatment technology is difficult to achieve rapid treatment. Purpose

Method used

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  • Technology of rapidly processing abrupt arsenic-polluted river water body in situ by using water-permeable adsorption dam
  • Technology of rapidly processing abrupt arsenic-polluted river water body in situ by using water-permeable adsorption dam
  • Technology of rapidly processing abrupt arsenic-polluted river water body in situ by using water-permeable adsorption dam

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Experimental program
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Effect test

Embodiment approach 1

[0016] Embodiment 1: In this embodiment, the particle size of activated alumina can be selected between 2-15 mm according to the concentration of arsenic;

[0017] Embodiment two: the activated alumina described in embodiment one is characterized in that the raw material is as follows: the particle diameter of activated carbon is 2-8mm, Al 2 o 3 %≥92%; specific surface area≥260m 2 / g;

Embodiment approach 3

[0018] Embodiment 3: This embodiment adopts the in-situ method, that is, it does not need to pump out the polluted water, and directly repairs at the polluted point.

Embodiment approach 4

[0019] Embodiment 4: The steps of this embodiment are as follows: use activated alumina as raw material, build a dam body with the same width as the river along the direction perpendicular to the water flow depending on the width of the river, and fill the dam body with the above-mentioned landfill activated alumina with a density of 0.4-1g / cm 3 , the aspect ratio of the dam body is 2-10, so that the polluted water can permeate and flow through the dam, and react with the activated alumina of the dam to remove arsenic pollutants. The schematic diagram is attached figure 1 , the operating parameters are shown in Table 2.

[0020] Table 2 Description of operating parameters

[0021]

[0022] In this embodiment, the medium ratio and operating parameters are determined according to the concentration of arsenic in the polluted water.

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Abstract

The invention relates to a rapid in-situ processing technology for an arsenic-polluted river water body and a construction technology for a water-permeable adsorption dam, and solves the problems that at present processing of river abrupt arsenic pollution accidents is large in difficulty, high in cost, complex in operation and severe in secondary pollution. A dam raw material is active aluminium oxide balls with the particle size of 2-8 mm, and the above active aluminium oxide ball is taken as the raw material for constructing the water-permeable dam along the water-flow perpendicular direction in a polluted river, and polluted water is processed when passing through the dam. The stay time is 5-10 min, and the removal rate has the highest value of 95% or more. The technology is capable of rapidly treating arsenic-polluted river water body with good effect. The technology has the advantages of low cost, simple operation, short restoration period, friendly ecology, no secondary pollution and wide application scope.

Description

technical field [0001] The invention relates to a rapid in-situ treatment technology for arsenic-polluted river water bodies and a permeable adsorption dam construction technology, belonging to the field of river water pollution control in environmental protection. Background technique [0002] Arsenic is a recognized toxic carcinogen. The accumulation of arsenic in the human body can lead to metabolic disorders, bone sclerosis, even paralysis, and carcinogenicity. NPL) first. In order to protect human health, the new national standard "Drinking Water Sanitation Standard" (GB5749-2006) implemented in my country on July 1, 2007 raised the standard limit of arsenic in drinking water from the international limit of no more than 0.05 mg / L to no more than 0.05 mg / L. More than 0.01mg / L. In the "Environmental Quality Standards for Surface Water" (GB3838-2002), it is stipulated that the arsenic content in water bodies of types I, II, and III shall not exceed 0.05 mg / L. Potable wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/62E02B3/10
CPCC02F1/281C02F1/58C02F2101/103E02B3/10
Inventor 丁爱中郑蕾豆俊峰张意韦雪晶陈明
Owner BEIJING NORMAL UNIVERSITY
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