Ectopic reaction system for remediating chromium-contaminated soil and arrangement method of system

A chromium-contaminated soil and reaction system technology, applied in the restoration of polluted soil, etc., can solve problems such as long infrastructure construction period, limited reactor processing capacity, and damage to surrounding sensitive receptors, so as to maintain soil moisture content, engineering Strong applicability, without affecting the effect of construction progress

Active Publication Date: 2015-07-08
BCEG ENVIRONMENTAL REMEDIATION CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an ectopic reaction system for remediation of chromium-contaminated soil and the arrangement method of the system, so as to solve the problem that the concrete structures used in the existing soil remediation system need to occupy a large site space, the infrastructure construction period is long, and the cost is high. It is not conducive to the use of some small and medium-sized projects, and a large amount of energy consumption is generated during the operation of the equipment. Af

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  • Ectopic reaction system for remediating chromium-contaminated soil and arrangement method of system
  • Ectopic reaction system for remediating chromium-contaminated soil and arrangement method of system

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Embodiment Construction

[0035] The content of the present invention will be further explained and illustrated below in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, the present invention relates to an ectopic reaction system for remediation of chromium-contaminated soil, comprising a reaction tank and a soil pile 2 stacked in the reaction tank, characterized in that: the reaction tank includes a tank body and barriers around the tank body Earth wall 9, the bottom surface and the side wall of described pond body are covered with bentonite pad 5, and lay impermeable membrane 4 and geotextile 3 on the described bentonite pad; The root of the earth wall penetrates to the outer side of the retaining wall 9, and the tail end is embedded in the retaining wall 9 from the outside to fix it; a supplementary pipe network 8 for supplying repairing agents and water is also laid in the reaction tank, and the upper part of the soil pile 2 The surface is covered with a thatch film ...

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Abstract

The invention relates to an ectopic reaction system for remediating chromium-contaminated soil and an arrangement method of the system. Chromium-contaminated soil is piled into a soil pile body in a reaction tank comprising a tank body and a soil blocking wall surrounding the tank body, wherein a geosynthetic clay liner is laid on the bottom surface and the side surface of the tank body, and an impermeable membrane and geotechnical cloth are laid on the tank body; the tail ends of the impermeable membrane and geotechnical cloth are embedded into the soil blocking wall from the outer sides; a supply pipe network for supply a remediation agent and moisture is also laid in the reaction tank; the upper surface of the soil pile body is covered by a covering membrane which completely covers the soil pile body to form an enclosed reaction system capable of preventing air from being in direct contact with the soil pile body, and the piling reaction of the contaminated soil is carried out on the system. When the environment temperature is high, moisture is evaporated gradually upward from the bottom of the pile body; when the temperature is low, water vapor is condensed, and is transferred again from the top of the pile body, so that water vapor circulation in an enclosed environment is formed, and the reaction effect is enhanced; the arrangement method is simple, and the technical requirement is low.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to an ex-situ reaction system for remediation of chromium-contaminated soil and an arrangement method of the system. Background technique [0002] Hexavalent chromium is a typical heavy metal pollutant, which has the characteristics of high toxicity and strong mobility, and poses a huge threat to the local environment and human health. In the relevant environmental protection plan, hexavalent chromium is listed as one of the key heavy metal pollutants, and large-scale hexavalent chromium pollution restoration work will be carried out in the future. Currently, ectopic remediation is mostly used for remediation of hexavalent chromium pollution. In the previous restoration process, the soil was mostly excavated from the surface and then transported to a specific structure or reactor for treatment. The structures are generally concrete structures, which need to occupy a large...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 郭丽莉李书鹏许超张岳范云康绍果
Owner BCEG ENVIRONMENTAL REMEDIATION CO LTD
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