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Method for treating soil pollution by using layered circulation cleaning

A technology for soil pollution and pollutants, applied in the field of environmental protection, to achieve the effects of preventing secondary pollution, small investment in equipment and saving water sources

Active Publication Date: 2014-09-17
东营金川水土环境工程有限公司
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Problems solved by technology

[0006] The present invention aims at the problems existing in the existing engineering technology, and provides a method of low-pressure irrigation and infiltration to clean the soil, once put into long-term stable operation, layered cycle cleaning, and multi-stage separation of pollutants to control soil pollution.

Method used

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  • Method for treating soil pollution by using layered circulation cleaning
  • Method for treating soil pollution by using layered circulation cleaning
  • Method for treating soil pollution by using layered circulation cleaning

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Embodiment Construction

[0032] Refer to attached Figure 1-5 , a method for controlling soil pollution by stratified cycle cleaning, comprising

[0033] Early preparation:

[0034] Carry out layered sampling and testing on the polluted plots to determine the types and contents of harmful pollutants, the depth of pollutants infiltrated into the soil, etc., and at the same time determine the depth of soil treatment according to the requirements of national standards. Use trenching and embedding machines to bury multi-layer seepage pipe networks layer by layer on the surface and underground from bottom to top. The surface seepage pipe network has the function of pouring clean water into the soil; the underground seepage pipe network first undertakes the function of pouring clean water according to the change of the treatment steps, and then undertakes the function of collecting sewage in the soil. The seepage pipe network in the underground part consists of water injection pipes, water collection pipe...

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Abstract

The invention relates to a method for treating soil pollution by using layered circulation cleaning, and discloses a method for in-place engineering mode treatment of polluted soil. The method comprises the following steps: arranging infiltration pipe networks on the ground surface and underground in a layered manner, cooperating with a ground water injection system and a sewage treatment system, and cleaning out pollutants in soil by adopting a low pressure irrigation penetration cleaning process. In the invention, an upper layer infiltration pipe network is used for injecting clear water to underground, a lower layer infiltration pipe network is used for collecting polluted water, and polluted soil is cleaned layer by layer from top to bottom until soil provided with the infiltration pipe networks is cleaned to reach prescribed standards. Heavy metals and pollutants separated from the sewage treatment system can be recycled or treated harmlessly. The method fundamentally solves the disadvantages of current polluted land treatment methods, and has the advantages of small equipment investment, high cleaning efficiency, thorough pollutant cleaning, and very high popularization application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to the restoration technology of polluted soil, and is an engineering method for quickly treating soil pollution by using layered cycle cleaning and multi-stage separation treatment. At the same time, this method is also applicable to the pollution control of landfills. Background technique [0002] Due to urban expansion, some pesticide factories, chemical fertilizer factories, and chemical factories originally distributed in the outskirts of the city have become the central area of ​​the city. When the land use was changed, it was found that the soil was seriously polluted by heavy metals and organic matter and could not be used for human life, residence and activities. The site must be treated and repaired before it can be used. In addition, some farmlands have been polluted by sewage and waste gas from chemical enterprises or mining and smelting enterprises for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/02
Inventor 彭成山袁扬林国华
Owner 东营金川水土环境工程有限公司
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