CN212069913U

CN212069913U - A normal position prosthetic devices for heavy metal contaminated soil

Info

Publication number: CN212069913U
Application number: CN201922483004.0U
Authority: CN
Inventors: 战树岩; 刘佩春; 李阳
Original assignee: Tianjin Winfuture Environemntal Protection Technology Co ltd
Current assignee: Tianjin Winfuture Environemntal Protection Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-12-04
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an normal position prosthetic devices for heavy metal contaminated soil, including power, positive plate, negative plate, foraminiferous container, electrolyte, pipeline A, pump A, pipeline B, pump B, EM treater and pollutant processing unit, the power respectively with positive plate, negative plate are connected, positive plate, negative plate are located the foraminiferous container that is equipped with the electrolyte respectively, be equipped with the filtering layer on the foraminiferous container, through pipeline A and pipeline B intercommunication between foraminiferous container, be provided with on the pipeline A pump A, be provided with pump B, EM treater and pollutant processing unit on the pipeline B, the EM treater is located pollutant processing unit the place ahead, foraminiferous container is located soil. The utility model discloses can be in the normal position timely, the heavy metal ion in the processing electrolyte that lasts, keep good heavy metal throughput constantly, the heavy metal clearance is more than 80%.

Description

A normal position prosthetic devices for heavy metal contaminated soil

Technical Field

The utility model belongs to the technical field of soil remediation, in particular to normal position prosthetic devices for heavy metal contaminated soil.

Background

With the development of industry and agriculture, soil pollution accidents occur continuously, and related data show that the cultivated land polluted by heavy metal in China is up to 2000 million hectares, and the farmland polluted by various organic pollutants or chemicals is up to 6000 million hectares in total. Soil heavy metal pollution has the characteristics of concealment, long-term property, irreversibility and the like, and the soil heavy metal pollution in China has influences on the quality of cultivated land, the food safety and even the human health. The method for restoring the heavy metal contaminated soil mainly comprises a type physicochemical method and a biological method. The physical and chemical method mainly comprises isolation, excavation-ground treatment, solvent leaching, thermal desorption, steam extraction, chemical solidification, stabilization and the like. Biological methods mainly include phytoremediation, animal remediation and microbial remediation. The physical and chemical method can effectively remove the pollution in the soil, but the treatment process can seriously affect the structure of the soil and the ecological environment of underground water, and the cost is higher. In situ bioremediation, although not damaging the ecological environment, is slow in the remediation process, low in efficiency, and its application is limited by soil conditions.

The electric method is one of the physicochemical methods, and the basic principle is similar to that of a galvanic cell, namely, current is introduced into an electrode pair inserted into soil, and various pollutants which are dissolved in water or adsorbed on the surface of soil particles move to an electrode region in an electromigration mode under the action of electric field force. Pollutants are finally enriched near the electrode area or enter the electrolytic bath, the electric rod needs to be cleaned regularly, the solvent in the dissolving tank needs to be discharged regularly to remove heavy metals in the soil, and the repair speed can be seriously influenced if the electric rod is not cleaned timely.

Disclosure of Invention

The utility model discloses to the technical problem who exists among the prior art, provide an normal position prosthetic devices for heavy metal contaminated soil, can in time clear up the heavy metal ion in the electrolyte at the normal position, improve the heavy metal clearance, shorten repair time.

The utility model adopts the technical proposal that: the utility model provides an normal position prosthetic devices for heavy metal contaminated soil, includes power, positive plate, negative plate, foraminiferous container, electrolyte, pipeline A, pump A, pipeline B, pump B, EM treater and pollutant processing unit, the power respectively with positive plate, negative plate are connected, positive plate, negative plate are located the foraminiferous container that is equipped with the electrolyte respectively, be equipped with the filtering layer on the foraminiferous container, through pipeline A and pipeline B intercommunication between foraminiferous container, be provided with on the pipeline A pump A, be provided with pump B, EM treater and pollutant processing unit on the pipeline B, the EM treater is located pollutant processing unit the place ahead, foraminiferous container is located soil.

Preferably, the pipe a and the pipe B are located on the soil.

Preferably, the power supply voltage is 9-15V.

Preferably, the filtering layer is a filtering cloth, a filtering cotton, a micro-filtering membrane, an ultra-filtering membrane or a nano-filtering membrane. The type of the filter layer is selected according to the particle size of the treated polluted soil.

The electrolyte may be selected from ionic or polar covalent bonding of conductive compounds such as sodium chloride, potassium chloride, sodium sulfate, and the like.

The working principle is as follows: the power supply applies voltage to the positive plate and the negative plate, potential difference is generated between the containers with the holes, and heavy metal ions in the soil are gathered around the containers with the holes, pass through the filter layer and enter the electrolyte. The electrolyte is recycled through the circulation of the two pumps, heavy metal ions are extracted and treated, and the content of the heavy metal ions in the electrolyte is maintained at a lower level. The EM processor and the pollutant processing unit are used in a combined mode, electric charges in sewage are rearranged under the action of an electromagnetic field, the processing efficiency of the pollutant processing unit is improved, and the pollutant processing unit can adopt ozone oxidation, ozone catalytic advanced oxidation and the like.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

1. the treatment of the utility model takes place between two electrodes, which is applicable to any place;

2. the utility model can treat the heavy metal contaminated soil in situ under the condition of no excavation;

3. the utility model can continuously treat the heavy metal ions in the electrolyte, and constantly keep good heavy metal treatment capacity;

4. the utility model discloses a heavy metal clearance is more than 80%.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a distribution pattern of the perforated container of the present invention in soil;

fig. 3 shows another distribution of the perforated container of the present invention in the soil.

In the figure, 1-power supply, 2-positive plate, 3-negative plate, 4-perforated container, 5-electrolyte, 6-pipeline A, 7-pump A, 8-pipeline B, 9-pump B, 10-pollutant treatment unit and 11-EM processor.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model discloses an normal position prosthetic devices for heavy metal contaminated soil, as shown in fig. 1, it includes power 1, positive plate 2, negative plate 3, foraminiferous container 4, electrolyte 5, pipeline A6, pump A7, pipeline B8, pump B9, EM treater 11 and pollutant processing unit 10, power 1 respectively with positive plate 2, negative plate 3 are connected, positive plate 2, negative plate 3 are located respectively and are equipped with electrolyte 5's foraminiferous container 4, be equipped with the filtering layer on the foraminiferous container 4, through pipeline A6 and pipeline B8 intercommunication between foraminiferous container 4, be provided with on the pipeline A6 pump A7, be provided with pump B9, EM treater 11 and pollutant processing unit 10 on the pipeline B8, EM treater 11 is located pollutant processing unit 10 the place ahead, foraminiferous container 4 is located soil. The pipe a6 and the pipe B8 are located on the soil. Preferably, the voltage of the power supply 1 is 10V.

As shown in fig. 2, the perforated container 4 is placed in the soil in an array form, and the positive electrode plates 2 and the negative electrode plates 3 are alternately placed in the perforated container 4. Two adjacent positive plates 2 and negative plates 3 form a pair of electrodes, a pipeline A6 and a pump A7 are arranged between the pair of electrodes, and electrolyte 5 is pumped from the positive plates 2 to the negative plates 3. All of the electrolyte 5 at the negative plates 3 is pumped to the EM processor 11, the pollutant treating unit 10 through the pipe B8, and after removing heavy metal ions, the electrolyte 5 is transported to each of the positive plates 2.

As shown in fig. 3, a ring of smaller perforated containers 4 is wrapped around a larger perforated container 4 with the positive plates 2 in the center and the negative plates 3 around. The electrolyte 5 is pumped from the positive plate 2 to each negative plate 3 through a pipeline A6 and a pump A7, then collected together through a pipeline B8 and a pump B9, and then conveyed to the positive plate 2 in the center after being removed with heavy metal ions through an EM processor 11 and a pollutant processing unit 10.

The present invention has been described in detail with reference to the embodiments, but the description is only exemplary of the present invention and should not be construed as limiting the scope of the present invention. The protection scope of the present invention is defined by the claims. Technical scheme, or technical personnel in the field are in the utility model technical scheme's inspiration the utility model discloses an essence and protection within range, design similar technical scheme and reach above-mentioned technological effect, perhaps to the impartial change that application scope was made and improve etc. all should still belong to within the protection scope is covered to the patent of the utility model.

Claims

1. The utility model provides an in situ remediation device for heavy metal contaminated soil which characterized in that: including power, positive plate, negative plate, foraminiferous container, electrolyte, pipeline A, pump A, pipeline B, pump B, EM treater and pollutant processing unit, the power respectively with positive plate, negative plate are connected, positive plate, negative plate are located the foraminiferous container that is equipped with the electrolyte respectively, be equipped with the filtering layer on the foraminiferous container, through pipeline A and pipeline B intercommunication between foraminiferous container, be provided with on the pipeline A pump A, be provided with pump B, EM treater and pollutant processing unit on the pipeline B, the EM treater is located pollutant processing unit the place ahead, foraminiferous container is located soil.

2. The in situ remediation device for heavy metal contaminated soil of claim 1, further comprising: the pipeline A and the pipeline B are located on the soil.

3. The in situ remediation device for heavy metal contaminated soil of claim 1, further comprising: the power supply voltage is 9-15V.

4. The in situ remediation device for heavy metal contaminated soil of claim 1, further comprising: the filter layer is filter cloth, filter cotton, a microfiltration membrane, an ultrafiltration membrane or a nanofiltration membrane, and the type of the filter layer is selected according to the particle size of the treated polluted soil.