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Remediation technology for salinized soil and application of remediation technology

A soil and process technology, applied in the field of salinization soil remediation technology, can solve the problems of soil compaction, salt content, alkalinity, etc., to improve accuracy, reduce salinity and effective content of heavy metals, strengthen passivation The effect of the effect of the modification and improvement

Active Publication Date: 2020-09-08
中节能大地环境修复有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome defects such as high salinity and alkalinity in saline-alkali land in the prior art, and the construction process is easy to cause soil compaction, etc., thereby providing a salinized soil restoration process and its application

Method used

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  • Remediation technology for salinized soil and application of remediation technology
  • Remediation technology for salinized soil and application of remediation technology
  • Remediation technology for salinized soil and application of remediation technology

Examples

Experimental program
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Effect test

Embodiment 1

[0052] This embodiment provides a restoration process for saline-alkali soil, which specifically includes the following steps,

[0053] Carry out pretreatment on the saline-alkali land soil to be repaired to keep the moisture content of the soil at 70%, specifically including cleaning the soil of straw and weeds, and removing plant remains and roots in the repair layer by plowing and other methods; using a plow and other equipment to level the site, level the obvious potholes in the cultivated land, make the surface soil bare, and there are no obvious potholes in the cultivated land, flood the soil with water, and keep the moisture content of the soil above 90% after gravity release. Hang the ground machine to level the site, and then continue to stand still to release water until the soil moisture content remains at 70%. In this embodiment, the gravity release is realized through the existing irrigation canals and drainage ditches of the land;

[0054] Then, build a cofferdam...

Embodiment 2

[0060] This embodiment provides a restoration process for saline-alkali soil, which specifically includes the following steps,

[0061] Carry out pretreatment on the saline-alkali land soil to be repaired to keep the moisture content of the soil at 70%, specifically including cleaning the soil of straw and weeds, and removing plant remains and roots in the repair layer by plowing and other methods; using a plow and other equipment to level the site, level the obvious potholes in the cultivated land, make the surface soil bare, and there are no obvious potholes in the cultivated land, flood the soil with water, and keep the moisture content of the soil above 90% after gravity release. Hang the ground machine to level the site, and then continue to stand still to release water until the soil moisture content remains at 70%. In this embodiment, the gravity release is realized through the existing irrigation canals and drainage ditches of the land;

[0062] Then, build a cofferdam...

Embodiment 3

[0068] This embodiment provides a restoration process for saline-alkali soil, which specifically includes the following steps,

[0069] Carry out pretreatment on the saline-alkali land soil to be repaired to keep the moisture content of the soil at 70%, specifically including cleaning the soil of straw and weeds, and removing plant remains and roots in the repair layer by plowing and other methods; using a plow and other equipment to level the site, level the obvious potholes in the cultivated land, make the surface soil bare, and there are no obvious potholes in the cultivated land, flood the soil with water, and keep the moisture content of the soil above 90% after gravity release. The ground machine is used to level the site, and then continue to stand still to release water until the soil moisture content remains at 70%. In this embodiment, the gravity release is realized through the existing irrigation canals and drainage ditches;

[0070] Then, build a cofferdam around t...

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Abstract

The invention belongs to the technical field of soil remediation, and particularly relates to a remediation technology for salinized soil and application of the remediation technology. The technologycomprises the following steps: pretreating soil in a plowing layer; constructing a cofferdam, forming ridges and constructing guide and drain ditches; and irrigating the soil for the first time, and performing draining after first standing; adding a passivator, irrigating the soil for the second time, then, performing pulping until the soil form a unform suspension, and performing draining after second standing. The invention provides a compound technology combining saline-alkali soil desalination, heavy metal removal and heavy metal passivation, the technology can effectively reduce the saline and alkaline degree of the soil and the content of effective states of heavy metals, and contributes to improvement and passivation effects on the soil; the remediation technology optimizes the water environment condition of remediation reaction through construction of a cofferdam, improves the distribution uniformity of an agent in a remediation range and improving the accuracy of the adding dose, contributes to controlling the soil to dissolve out excessive salt and part of target heavy metals in a solution with ideal pH and ion concentration, and reduces the salinity and alkalinity of thesoil.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a salinized soil remediation process and application thereof. Background technique [0002] With the rapid growth of my country's economy, the overall quality of the soil environment is not optimistic. According to the "National Soil Pollution Survey Bulletin" issued by the Ministry of Environmental Protection in 2014, the rate of soil points exceeding the standard in the country is 19.4%, and the rate of cadmium (Cd) exceeding the standard is as high as 7%. . Saline soil is one of the most important soil types in middle land in my country, and it is an important reserve land resource in my country. The area and quality of saline soil change rapidly, and it is strongly affected by human factors, such as improper irrigation, excessive felling, excessive use of chemical fertilizers, etc. All will lead to soil degradation, resulting in secondary salinization of g...

Claims

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Application Information

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IPC IPC(8): A01B79/00A01B79/02B09C1/08B09C1/10C05G3/80C09K17/40C09K17/02C09K101/00
CPCA01B79/00A01B79/02B09C1/08B09C1/10C05D9/02C05D3/02C05D9/00C05G3/80C09K17/40C09K17/02B09C2101/00C09K2101/00C05F11/00Y02P60/20
Inventor 杨鹤峰卜繁婷肖满万鹏马志强王轶嘉
Owner 中节能大地环境修复有限公司
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