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Ultrasonic in situ extraction process for remediating heavy metal-polluted soil

A technology of polluted soil and ultrasonic wave, applied in the direction of restoration of polluted soil, etc., to achieve the effect of reducing energy consumption, shortening extraction time, and wide range of types

Inactive Publication Date: 2011-08-31
长春联创水质工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the defects of traditional in-situ extraction technology, the present invention provides an in-situ extraction process that uses ultrasonic enhanced extraction and is suitable for repairing heavy metal-contaminated soil

Method used

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  • Ultrasonic in situ extraction process for remediating heavy metal-polluted soil
  • Ultrasonic in situ extraction process for remediating heavy metal-polluted soil

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Embodiment Construction

[0015] combine figure 1 The embodiment of the present invention is specifically described as follows: the prepared extractant is stored in the extractant storage tank (5), and after the sprinkler irrigation device (1) and the injection well (2) are evenly infiltrated into the surface layer and the inside of the polluted soil, the ultrasonic generator is opened (3) and adjust the power, through the transducer vibrator box (4) to emit ultrasonic waves to the soil for ultrasonic extraction, after extraction for a certain period of time, under the action of the pump (10), the extraction agent is extracted from the extraction well (6) Transport to the extractant collection tank (7), then flow into the extractant regeneration tank (8), where the extractant and heavy metals are separated in the extractant regeneration tank (8), and the regenerated extractant flows into the extractant storage tank (5) reuse in.

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Abstract

In order to solve the defects of conventional heavy metal-polluted soil in situ extraction technology, the invention provides an ultrasonically-intensified in situ extraction process. An extracting agent uniformly permeates into the surface layer and the inside of polluted soil through a sprinkler plant and an injection well and performs rapid extraction under the effect of ultrasonic waves; extraction solution is extracted and collected into an extracting agent regeneration pond for treating through an extraction well; and the regenerated extracting agent can be recycled. The process has thecharacteristics of high extraction efficiency, short time, extracting agent reproducibility and capability of economically and effectively performing in situ extraction and remediation on the heavy metal-polluted soil.

Description

Technical field: [0001] The invention belongs to the technical field of soil treatment and remediation, and in particular relates to an extraction process for in-situ remediation of heavy metal-contaminated soil by using ultrasonic acceleration to extract heavy metals. Background technique: [0002] Heavy metal pollution in soil, due to its concealment, long-term and irreversible nature, degrades soil fertility continuously, reduces crop yield and quality, and indirectly causes potential harm to human life and health. In recent years, with the rapid development of smelting, printing and dyeing, electronics and other industries, site pollution incidents at home and abroad have occurred frequently, posing a serious threat to people's lives, ecological environment and social security. Therefore, it is very necessary to restore heavy metal-contaminated sites. [0003] The remediation of heavy metal contaminated soil is mainly divided into physical remediation, chemical remediati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/02
Inventor 漆静娴王鹤立申亮
Owner 长春联创水质工程有限公司
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