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An electric soil heavy metal removal device

A heavy metal and soil technology, applied in the restoration of polluted soil, etc., can solve the problems of difficult discharge of anode electrode gas, hindering the normal operation of the DC electric field, and rainwater interference with the treatment process, etc.

Active Publication Date: 2022-06-17
浙江省有色金属地质勘查局 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that the gas generated by the anode electrode is difficult to discharge, the strong acidic electrode solution of the anode is difficult to be adjusted to neutral in time, and the rainwater interferes with the treatment process and other practical problems, which greatly hinder the DC electric field in the field electric repair process. Normal work, resulting in the removal efficiency of heavy metal ions is difficult to meet the actual needs

Method used

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  • An electric soil heavy metal removal device
  • An electric soil heavy metal removal device
  • An electric soil heavy metal removal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see Figure 1-3 , This embodiment provides an electric soil heavy metal removal device, including a power supply (not shown in the figure), a cathode (not shown in the figure), an anode rod 4, a water inlet pipe 1, an anode placement pipe and a water outlet pipe 3.

[0029] The power supply is located above the soil, the anode rod 4 is located in the soil, the cathode is arranged on the soil surface, and the power supply, the anode rod 4 and the cathode are electrically connected in sequence to form a loop. After the power supply is energized, a DC electric field is formed between the anode rod 4 and the cathode, that is, between the anode rod 4 and the soil surface, and the heavy metal ions in the soil continue to migrate to the cathode.

[0030] The water inlet pipe 1 , the anode placement pipe and the water outlet pipe 3 are connected in sequence, and the water enters the water inlet pipe 1 from the water inlet 11 of the water inlet pipe 1 , then flows through the an...

Embodiment 2

[0045] see Figure 4 The difference between this embodiment and Embodiment 1 is that the anode placement tube also includes a triangular prism body 25 located below the placement section 22 . The bottom side edges of the triangular prism 25 can make the placing section 22 more easily pressed into the soil, and the solid triangular prism 25 can make the anode placing tube move down the center of gravity after pressing, so that the anode placing tube can be more easily placed in the soil. for stability. In this embodiment, the outer contour of the cross section of the anode placement tube at the placement section 22 is a quadrilateral. Further, the four vertices of the quadrilateral are located on the same circle, so that the cross section of the anode placement tube at the placement section 22 is closer to the round, thereby reducing the design length of the transition pipe, correspondingly, the length of the circular pipe on the first connecting section and the second connect...

Embodiment 3

[0047] see Figure 5 The difference between this embodiment and Embodiment 1 is that the upper end of the water inlet main pipe is provided with a collecting funnel 12 that increases the area of ​​the water inlet 11 , and the upper end of the water outlet pipe 3 is provided with a ring cover 32 that reduces the area of ​​the water outlet 31 . When it rains, the water collecting funnel 12 can increase the amount of rainwater collected at the water inlet 11. After the area of ​​the water outlet 31 is reduced, the amount of rainwater falling into the water outlet 31 is less than that at the water inlet 11, thereby ensuring that the rainwater is collected and utilized. In this case, the backflow of the liquid anolyte from the water outlet 31 to the water inlet 11 is prevented.

[0048] In this embodiment, an annular buffer cover 37 is also provided on the outer wall of the water outlet pipe 3 above the soil. The middle part of the buffer cover 37 is recessed downward, so that the ...

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Abstract

The invention discloses an electrodynamic soil heavy metal removal device, which comprises an anode rod, a water inlet pipe, an anode placement pipe and a water outlet pipe, the water inlet pipe, the anode placement pipe and the water outlet pipe are connected in sequence, the anode placement pipe is arranged horizontally, and the anode placement pipe includes a placement section , the cross-sectional shape of the placement section is triangular, the anode rod is arranged in the placement section along the axial direction of the placement section, the anode rod is supported on the bottom wall of the placement section, the bottom of the placement section is for the flow of liquid flowing in from the water inlet pipe, and the placement section The pointed top collects the gas generated at the anode rod, and the bottom of the side wall of the placement section is provided with an anti-shielding permeable hole, which prevents electrostatic shielding in the placement section and allows the liquid in the placement section to contact with the soil.

Description

【Technical field】 [0001] The invention relates to an electric soil heavy metal removal device, which belongs to the field of soil heavy metal pollution control. 【Background technique】 [0002] Electric remediation treatment technology has the characteristics of small damage to soil structure, in-situ treatment, short treatment period and relatively low treatment price, and is suitable for the treatment of heavy metal pollution in cultivated soil. The working principle of the electric device is to rely on the establishment of a DC electric field to make the heavy metal ions in the soil move to the cathode continuously, and be adsorbed by the heavy metal capture material near the cathode, thereby removing the heavy metal ions in the soil. Due to the fact that the gas generated by the anode electrode is difficult to discharge, the anode strong acid electrode solution is difficult to adjust to neutrality in time, and the rainwater interferes with the treatment process and other ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08
CPCB09C1/085
Inventor 周闻达
Owner 浙江省有色金属地质勘查局
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