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River and lake sediment heavy metal precipitation, solidification and foundation reinforcement test device and method

A foundation reinforcement and test device technology, applied to measuring devices, using stable tension/pressure to test material strength, analyzing materials, etc., can solve problems such as inability to visualize, achieve simple and effective test methods, improve removal efficiency, and simple structure Effect

Inactive Publication Date: 2021-03-16
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a test device and method for heavy metal precipitation, solidification and foundation reinforcement in river and lake bottom mud, which solves the technical problem of being unable to visualize and continuously observe the whole process of heavy metal precipitation, in-situ solidification and foundation reinforcement in river and lake bottom mud

Method used

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  • River and lake sediment heavy metal precipitation, solidification and foundation reinforcement test device and method
  • River and lake sediment heavy metal precipitation, solidification and foundation reinforcement test device and method
  • River and lake sediment heavy metal precipitation, solidification and foundation reinforcement test device and method

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Embodiment 1

[0040] The present embodiment provides a visual test method for heavy metal precipitation and foundation reinforcement in river and lake sediments, including the following steps:

[0041] Step 1: Prepare a visual test device of corresponding size according to the test requirements; the visual test device includes a transparent model tank 1, a drainage plate 2, a geotextile 3, an anode iron mesh, a cathode iron mesh and a data acquisition instrument. In this embodiment, the transparent model groove 1 is 400mm long, 200mm wide and 200mm high; the soil treatment chamber 10 is 300mm long, 180mm wide and 180mm high. The bottom thickness of the transparent model slot 1 is 20mm, and the side plate thickness of the transparent model slot 1 is 8mm. A fully covered geotextile 3 and electrodes are arranged in sequence on the drainage plate 2 near the side wall of the soil treatment chamber 10; a drainage hole 9 is provided on the bottom surface of the drainage chamber 11, and the outlet ...

Embodiment 2

[0050] The present embodiment provides a visual test method for heavy metal precipitation and foundation reinforcement in river and lake sediments, including the following steps:

[0051] Step 1. Prepare a visual test device of corresponding size according to the test requirements; the visual test device includes a transparent model tank 1, a drainage plate 2, a geotextile 3, a PPR pipe with holes, an anode iron mesh, a cathode iron mesh and a data acquisition instrument. In this embodiment, the transparent model groove 1 is 420 mm long, 210 mm wide, and 220 mm high; the soil treatment chamber 10 is 320 mm long, 200 mm wide, and 220 mm high. The bottom thickness of the transparent model slot 1 is 20mm, and the side plate thickness of the transparent model slot 1 is 8mm. A fully covered geotextile 3 and electrodes are arranged in sequence on the drainage plate 2 near the side wall of the soil treatment chamber 10; a drainage hole 9 is provided on the bottom surface of the drain...

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Abstract

The invention discloses a river and lake sediment heavy metal precipitation, solidification and foundation reinforcement test device, a detachable drainage plate is arranged in a transparent model tank, and the drainage plate divides the transparent model tank into a drainage chamber and a soil body treatment chamber; geotextile is arranged on the inner side surfaces of the drainage plates which are oppositely arranged; a PPR pipeline with an opening is detachably connected into the soil body treatment chamber; and an anode iron net and a cathode iron net are arranged in the soil body treatment chamber and close to the geotextile. The device is simple in structure, and can be used for realizing non-embedded continuous observation of the internal displacement and heavy metal migration process of the soil body and evaluating the treatment effect of the heavy metal pollutants in each stage of river and lake sediment heavy metal pollutant precipitation, in-situ solidification and foundation reinforcement combined treatment. The invention further provides a river and lake sediment heavy metal precipitation and solidification and foundation reinforcement test method. The foundation reinforcement effect is achieved while the removal efficiency of heavy metal in a soil body is greatly improved. The method is simple, effective and wide in applicability.

Description

technical field [0001] The invention belongs to the fields of visual model test technology, electroosmosis technology and foundation reinforcement technology, and particularly relates to a test device and method for heavy metal precipitation, solidification and foundation reinforcement in river and lake sediments. Background technique [0002] Electroplating, mining, and chemical industries will produce a large amount of waste water into the river. With long-term discharge, a large amount of Cu, Zn, Ni or Cr heavy metal elements will accumulate in the sediments of rivers and lakes, which will hinder the growth and development of plants and even cause major harm to the human body. . This requires the precipitation or in situ solidification of heavy metal pollutants in the sediments of rivers and lakes, and the reinforcement of foundations for the sediments of rivers and lakes and river slopes. The traditional methods for treating polluted river and lake sediments mainly incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N13/00G01N21/84G01N27/00G01N27/04G01N3/14
CPCG01N3/14G01N13/00G01N21/84G01N27/00G01N27/041G01N33/24G01N2013/003G01N2021/8411G01N2203/0003G01N2203/0019G01N2203/0033
Inventor 孔纲强陈永辉曹特陈庚陈龙武亚军杜文山王雪亮
Owner HOHAI UNIV
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