A soil conditioner suitable for remediation of contaminated soil on site, its preparation method and application

A soil conditioner and a technology for polluted soil, applied in the field of soil conditioner and its preparation, can solve the problems of no soil conditioner and insignificant remediation effect of industrially polluted soil, achieve good surface chemical activity, good physical adsorption performance, improve The effect of water absorption

Active Publication Date: 2021-08-13
JIGANG INT ENG & TECH CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of soil conditioner suitable for the remediation of site polluted soil and its preparation method and application, to solve the problem that there is no soil conditioner for industrially polluted sites in the prior art, and the existing soil conditioner is harmful to industrially polluted soil The problem that the repair effect is not obvious

Method used

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  • A soil conditioner suitable for remediation of contaminated soil on site, its preparation method and application

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preparation example Construction

[0042] The invention also discloses a preparation method of a soil conditioner suitable for remediation of site polluted soil, such as figure 1 shown, including the following steps:

[0043] ①The hot and stuffy steel slag is fed by the feeding forklift 1, and enters the vibrating screen 2, the large-grained steel slag with a diameter greater than 50mm is returned, and the small-grained steel slag with a diameter of less than 50mm falls on the belt conveyor 3;

[0044]②The belt conveyor 3 is located below the vibrating screen 2, and enters the magnetic separation device 4 through the belt conveyor 3. The magnetic separation device 4 is located above the belt conveyor 3. The iron-containing elements in the raw materials are selected through the magnetic separation device 4, and then enters the crushing process. Machine 5, the crusher 5 is arranged below the magnetic separation device 4, the raw materials are crushed by the crusher 5, and the crushed raw materials enter the ball ...

Embodiment 1

[0059] A soil conditioner suitable for remediation of contaminated soil on site, consisting of the following raw materials: 50kg of steel slag, 25kg of magnesium sulfate, 10kg of industrial sludge, 10kg of binder, 5kg of distiller's grains and 5kg of straw humus;

[0060] The binder is composed of clay, water and vetiver in a mass ratio of 9:1:0.5.

Embodiment 2

[0062] A soil conditioner suitable for remediation of contaminated soil on site, consisting of the following raw materials: 150kg of steel slag, 125kg of magnesium sulfate, 40kg of industrial sludge, 40kg of binder, 20kg of distiller's grains and 20kg of straw humus;

[0063] The binder is composed of clay, water and vetiver in a mass ratio of 3:3:1.5.

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Abstract

The invention discloses a soil improver suitable for remediation of polluted soil on site, its preparation method and application, wherein the soil improver is composed of the following raw materials: steel slag, magnesium sulfate, industrial sludge, binder, distiller's grains, etc.; The binder is composed of clay, water and vetiver with a mass ratio of 3 to 9:1 to 3:0.5 to 1.5; the invention is a soil improver suitable for remediation of contaminated soil on site, suitable for the original site of industrial enterprises, and can be The total porosity of the soil is increased from the original 30% to 50%, which can improve the water absorption capacity of the soil; and the pH value of the soil is improved from 4 to 6 to 7 to 9; and the density of the soil improver of the present invention is close to the soil density 1.3~1.6t / m 3 , so that it can better integrate with the soil and play its role in soil restoration.

Description

technical field [0001] The invention relates to the technical field of soil remediation and improvement, in particular to a soil improver suitable for site contaminated soil remediation and its preparation method and application. Background technique [0002] Contaminated industrial sites are more complicated due to contaminated soil, and different sites have various problems in the process of soil remediation due to the production process history. All kinds of harmful pollutants left behind, such as heavy metals, aromatic hydrocarbons, dioxins or titanate compounds left after the demolition of steel mills, etc., these pollutants can enter the surrounding areas of industrial areas through atmospheric deposition and waste slag infiltration Soil, the current soil improver does not have a special improver for the land polluted by the demolition of the steel factory, so the polluted site after the demolition of the steel factory can only be abandoned and cannot be converted into...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40B09C1/08C09K103/00C09K109/00
CPCB09C1/08C09K17/40C09K2103/00C09K2109/00
Inventor 穴俊莲栾元迪李兵王永强张春苗董振鲁王明磊刘洪东程志洪谷海龙孙璐孙航程宇张皓淳
Owner JIGANG INT ENG & TECH CO LTD
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