Simulation test device and simulation test method for ex-situ remediation of contaminated soil by liquid preparations

A liquid agent and ectopic remediation technology, which is applied in the field of contaminated soil remediation, can solve problems such as resource waste, unfavorable transportation and resource utilization, scenarios and parameters do not match, and achieve the effect of improving mixing efficiency

Active Publication Date: 2014-03-12
上海环境保护有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when implementing soil remediation projects, it is often impossible to add a large amount of water to the soil to form mud, because the mud is not conducive to the subsequent transportation and resource utilization process, and at the same ti

Method used

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  • Simulation test device and simulation test method for ex-situ remediation of contaminated soil by liquid preparations
  • Simulation test device and simulation test method for ex-situ remediation of contaminated soil by liquid preparations
  • Simulation test device and simulation test method for ex-situ remediation of contaminated soil by liquid preparations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1~2 As shown, a simulation test device for ectopic restoration of contaminated soil with liquid medicaments of the present invention mainly includes a liquid medicament delivery unit, a crushing and stirring unit, a liquid medicament spraying unit, and a supporting stirring container unit, wherein:

[0039] in:

[0040] The liquid medicament delivery unit includes a solution storage tank 14 , an antiseptic peristaltic pump 13 , a liquid flow meter 12 and a liquid delivery pipeline 15 . The solution storage pool 14 is used to store liquid medicine or prepared medicine solution. One end of the anti-corrosion peristaltic pump 13 is connected to the solution storage pool 14 to generate power, and the solution is transported to the liquid flow meter 12 by means of the liquid delivery pipeline 15 and finally enters the crushing and stirring Axis 8. The liquid flow meter 12 is used to record the flow of liquid and calculate the amount of liquid medicine added...

Embodiment 2

[0048] A kind of simulation test device utilizing the liquid medicament ectopic remediation of polluted soil described in Example 1 to carry out, simulate the influence of liquid heavy metal stabilizing medicament addition on the heavy metal contaminated soil stabilization and repair process, the simulation test method is as follows:

[0049] (1) Weigh 0.4 g of disodium EDTA, a heavy metal stabilizing agent, dissolve it in distilled water to form a 40 ml solution, and put it into the solution storage pool 14;

[0050] (2) Weigh 200g of heavy metal-contaminated soil that has passed through a 20-mesh sieve, place it in the lower assembly 17 of the split container, and place it on the liftable base 24; adjust the height of the liftable base 24 until it reaches the lower assembly of the split container The opening 19 is closely connected with the sealing ring 7 on the crushing stirring shaft; the upper assembly 16 of the split container is placed on the lower assembly 17 of the spl...

Embodiment 3

[0058] Another kind of simulation test device utilizing the liquid medicament described in Example 1 to remediate contaminated soil is carried out to simulate the impact of different soil moisture contents on the stabilization and restoration process of heavy metal contaminated soil. The simulation test method is basically the same as that of Example 2, except that in:

[0059] In step (1), weigh 2 g of disodium EDTA, dissolve it in distilled water to form a 40 ml solution, and put it into the solution storage pool 14;

[0060] Follow steps (2) to (5) in sequence;

[0061] (6) Collect three soil samples from different parts of the lower assembly 17 of the split container and form a mixed sample to take a small part for soil water content measurement, and put the rest of the samples in a sealed jar for curing for 28 days, refer to the People's Republic of China The environmental protection industry standard "Solid Waste Leaching Toxic Leaching Method Sulfuric Acid Nitric Acid ...

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Abstract

The invention discloses a simulation test device and a simulation test method for ex-situ remediation of contaminated soil by liquid preparations. The simulation test device comprises a liquid preparation conveying unit, a crushing-stirring and liquid preparation spraying unit and a matched sealed stirring container unit. The crushing-stirring and liquid preparation spraying unit comprises a speed adjustment motor, a motor rotation speed controller, a motor shaft, a transmission mechanism, a bearing, a bracket and a hollow crushing stirring shaft with a plurality of hammer blades and spray holes. The method comprises: preparation of a preparation solution, addition of soil, preliminary crushing and stirring, spraying of the preparation solution, fetching of soil and acquisition of a sample, and data analysis process. The simulation test device can fully mix the liquid preparations and the soil on the premise of keeping low soil moisture content by further crushing the soil, and prevents the deviation of test results caused by relatively high soil moisture content and relatively low oxidation-reduction potential; and the system stays in a sealed state and no dust is generated during a contaminated soil remediation simulation test.

Description

technical field [0001] The invention belongs to the technical field of contaminated soil remediation, and in particular relates to a simulation test device and a simulation test method for ectopic remediation of polluted soil by liquid agents. Background technique [0002] With the acceleration of urbanization and industrial transfer, the number of polluted sites that have been relocated or left behind by urban industrial enterprises in my country is increasing day by day. According to preliminary estimates, there are at least hundreds of thousands of industrial pollution sites in my country. Urban polluted sites have become a limiting factor for the safe reuse of land resources in many large and medium-sized cities in my country. The research and practice of site contaminated soil remediation has become an important content in the field of environmental governance in my country. [0003] According to the location of soil remediation, soil remediation technology can be div...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 张长波罗启仕杨洁李忠元李青青王旌朱悦高洁朱江朱杰郭琳孟梁
Owner 上海环境保护有限公司
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