CN113321273A

CN113321273A - Treatment device for removing heavy metals in water and removing and recycling method thereof

Info

Publication number: CN113321273A
Application number: CN202110731108.8A
Authority: CN
Inventors: 潘玉琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-08-31
Also published as: WO2023272776A1

Abstract

The invention relates to a treatment device for removing heavy metals in water and a method for removing and recovering the same. An analog circuit battery pack is energized to an anode electrode and a conductive layer of a cathode electrode respectively through wires, and negative charges are generated on the surface of the conductive layer, so that the heavy metal solution in the heavy metal solution is energized. The heavy metals are adsorbed on the surface of the carbon adsorption layer by the negative charges on the conductive layer; therefore, the present invention can effectively remove heavy metal ions, including Ni, Mn, Pb, Zn, Cd, Cu, Hg, Cr, As, Co, Mo, One or more of Ag, Au, Pt, Pd, Rh, Ir, Re, the efficiency of removing heavy metals is greatly improved. The battery pack used in the present invention is an analog circuit battery pack that imitates microalgae to generate cell live electricity. The output power is high and very stable, and the cathode electrode is adjusted through the internal circuit to output a positive charge recovery anode according to requirements; it can facilitate the follow-up Cleaning of the recovered carbon adsorption layer, and recovery of heavy metals adsorbed on the surface of the recovered carbon adsorption layer.

Description

Treatment device for removing heavy metals in water and removing and recycling method thereof

Technical Field

The invention relates to the technical field of heavy metal pollution treatment, in particular to a treatment device for removing heavy metals in water and a removing and recycling method thereof.

Background

Due to various factors, the lakes and the ecosystems are continuously polluted by the toxic heavy metal ions, some mountain springs are polluted by the toxic heavy metal ions, surrounding residents and crops are poisoned, and the heavy metal ions have obvious harmful effects on the metabolism and normal physiology of human bodies, so that various diseases are caused. Solving the pollution of toxic heavy metal ions is a global problem.

The current technology is as follows: the treatment method for removing heavy metal ions in water (food, beverage and wastewater) mostly uses adsorbing materials, is expensive and has high recycling difficulty, and secondary pollution can be caused by waste treatment. The method for removing the heavy metals in the water by using the electrolysis mode has the defects of low removal efficiency and waste gas discharge caused by certain chemical reaction.

Wherein, the patent publication numbers CN107473416A and CN102075113A both disclose that microalgae are utilized to remove heavy metal ions in wastewater. In the first application patent, culture solution after collecting microalgae is required to be firstly precipitated in a precipitation tank to remove impurities insoluble in the culture solution, the culture solution after being nearly precipitated is filtered, and filtrate is pumped into an adsorption tank filled with an adsorbent, so that the process of removing heavy metals is complicated and low in removal efficiency; meanwhile, the bioelectricity generated by the microalgae is unstable, and biological decline can occur; in the second application, the hydrogen generation is performed by green algae photolysis water to generate hydrogen, but in the process, the hydrogen generation of the microalgae is subject to the counter inhibition of the hydrogen and the defects of high cost and easy poisoning of metal electrodes.

Meanwhile, in the system of the latest chinese patent application CN 211393969U, a cell-activated battery using microalgae is used and is used for purifying heavy metal ions in an aqueous solution by electrolysis, which results in low efficiency of removing heavy metals, long time required, and unstable cell-activated battery using microalgae.

Disclosure of Invention

In view of the defects of the prior art, one of the purposes of the invention is to provide a treatment device for removing heavy metals in water, which can solve the problem of removing heavy metals in water;

the second object of the present invention is to provide a method for removing heavy metals in water, which can solve the problem of removing heavy metals in water.

The third object of the present invention is to provide a recovery method for a treatment apparatus for recovering heavy metals temporarily adsorbed by the technique of the first object 1, which can solve the problem of recovering heavy metals in water.

The technical scheme for realizing one purpose of the invention is as follows: a processing device for removing heavy metals in water comprises an analog circuit battery pack simulating living of microalgae-generated cells, an anode electrode internally provided with a buffer medium, and a cathode pool for storing heavy metal solution, wherein the analog circuit battery pack is provided with a cathode output end and an anode output end, the cathode output end is electrically connected with the cathode electrode through a lead, the anode output end is electrically connected with the anode electrode through the lead, and the cathode electrode is contacted with the heavy metal solution in the cathode pool; and the cathode electrode comprises a conducting layer electrically connected with the cathode output end and a carbon adsorption layer wrapped on the surface of the conducting layer.

Further, the cathode electrode is of a tubular structure, and a through hole for allowing the heavy metal solution to flow through is formed in the center of the cathode electrode along the length of the cathode electrode, so that the carbon adsorption layer is in contact with the wastewater.

Furthermore, the tubular structure cathode electrode comprises a carbon adsorption layer, a conductive layer and an insulating layer which are sequentially wrapped from inside to outside.

Further, the cathode electrode is of a plate-shaped structure or a rod-shaped structure. The cathode and the anode can be tubular, so that the efficiency is high; other structures such as plate-like structures or rod-like structures are possible, but the efficiency is reduced.

Further, the conductive layer is copper or iron or zinc or other conductive metal or the like.

Further, the buffer medium is bicarbonate buffer medium or oxygen; during the recovery process, the anode electrode becomes a recovery cathode through the analog circuit battery pack, and the recovery buffer medium in the recovery cathode is potassium ferricyanide, potassium permanganate, nitrate, sulfate and bicarbonate.

Further, the output voltage of the analog circuit battery pack is 1-6V.

The second technical scheme for realizing the aim of the invention is as follows: a method for removing heavy metals in water by using a treatment device comprises the following steps:

step 1: filling a buffer medium in the anode electrode, wherein the buffer medium of the anode electrode is bicarbonate buffer medium or oxygen;

step 2: placing the cathode electrode in a cathode pool for storing heavy metal solution, and enabling the carbon adsorption layer to be in direct contact with the wastewater;

and step 3: the analog circuit battery pack is respectively electrified to the anode electrode and the conducting layer of the cathode electrode through leads so that the anode electrode generates positive charges, the surface of the conducting layer of the cathode electrode generates negative charges, and meanwhile, heavy metals in the heavy metal solution are adsorbed on the surface of the carbon adsorption layer by the negative charges on the conducting layer of the cathode electrode.

Preferably, a step 2a is also provided between the step 2 and the step 3,

step 2 a: the heavy metal solution is extracted through the pump body, and the heavy metal solution is controlled to pass through the cathode electrode at a preset flow rate, so that the carbon adsorption layer is directly contacted with the wastewater; the heavy metal solution comprises one or more of Ni, Mn, Pb, Zn, Cd, Cu, Hg, Cr, As, Co, Mo, Ag, Au, Pt, Pd, Rh, Ir and Re heavy metal ions.

The technical scheme for realizing the third aim of the invention is as follows:

a recovery method of a treatment device for removing heavy metals in water is characterized in that:

step 1: the analog circuit battery pack adjusts the cathode electrode into a recovery anode with positive output charge through an internal circuit, and adjusts the anode electrode into a recovery cathode with negative output charge through the internal circuit;

and the recycling cathode is filled with recycling buffer medium, and the recycling buffer medium is one of potassium ferricyanide, potassium permanganate, nitrate, sulfate and bicarbonate; the recycling cathode comprises a first recycling carbon adsorption layer, a first recycling conductive layer and a first recycling insulation layer which are sequentially wrapped from inside to outside, and the recycling buffer medium is positioned in the first recycling carbon adsorption layer;

step 2: placing the recovery anode in a cathode pool for storing heavy metal solution, wherein the recovery anode is sequentially provided with a second recovery carbon adsorption layer, a second recovery conductive layer and a second recovery insulating layer from inside to outside, and heavy metal is adsorbed on the surface of the second recovery carbon adsorption layer of the recovery anode;

and step 3: the analog circuit battery pack is respectively electrified to the recycling cathode and the recycling conductive layer of the recycling anode through leads, so that a second recycling conductive layer of the recycling anode generates positive charges, and meanwhile, heavy metals on a second recycling carbon adsorption layer of the recycling anode are extruded outside the surface of the second recycling carbon adsorption layer by the positive charges on the second recycling conductive layer.

The invention has the beneficial effects that:

1. the anode electrode of the analog circuit battery pack simulating the living of microalgae cells is positioned in the anode pool, and the cathode electrode is contacted with the heavy metal solution in the cathode pool; the battery pack with the analog circuit is electrified to the anode electrode and the conducting layer of the cathode electrode through the conducting wires respectively, so that the anode electrode generates positive charges, the surface of the conducting layer generates negative charges, and heavy metal in the heavy metal solution is adsorbed on the surface of the carbon adsorption layer by the negative charges on the conducting layer.

2. The traditional microalgae cell-producing live battery mainly has the problems of large internal resistance of a reactor, high material cost, low output power and the like; the battery pack used by the invention is an analog circuit battery pack which simulates microalgae to generate cells and live electricity, has high output power and is very stable, and meanwhile, because the analog circuit battery pack adopts conventional electronic elements, the situation of biological decay does not exist, and the manufacturing cost is low, so that the battery pack is suitable for batch production.

3. The analog circuit battery pack is convenient to control, and a cathode electrode can be adjusted into a recovery anode with positive charge output through an internal circuit according to requirements; the subsequent cleaning of the carbon adsorption layer and the recovery of the heavy metal adsorbed on the surface of the carbon adsorption layer can be facilitated.

Drawings

FIG. 1 is a schematic view of the working principle of the cathode electrode in a tubular structure and the anode electrode in a tubular structure according to the present invention;

FIG. 2 is a schematic view of the operation of the cathode electrode in a tubular configuration and the anode electrode in another tubular configuration according to the present invention;

FIG. 3 is a schematic view of the working principle of the present invention in which the anode is recovered in a tubular structure and the cathode is recovered in a tubular structure;

FIG. 4 is a schematic view of the operation principle of the adsorption process and the recovery process of the integrated apparatus according to the present invention;

FIG. 5 is a schematic view of the working principle of the present invention in which the cathode and the anode are both rod-shaped structures;

FIG. 6 is a schematic view of the working principle of the cathode electrode of the present invention in a rod-like structure and the anode electrode in a tube-like structure;

FIG. 7 is a schematic view of the operation of the cathode electrode in a rod-like configuration and the anode electrode in another tube-like configuration according to the present invention;

the reference numbers illustrate:

1. an analog circuit battery pack; 11. an anode output end; 12. a cathode output end; 2. an anode electrode; 20. a buffer medium; 21. an anode carbon adsorption layer; 22. an anode conductive layer; 23. an anode insulating layer; 3. a cathode electrode; 31. a carbon adsorption layer; 32. a conductive layer; 33. heavy metal solutions; 34. an insulating layer; 4. recovering the cathode; 40. recovering the buffer medium; 41. a first recovered carbon adsorption layer; 42. a first recycled conductive layer; 43. a first recovered insulating layer; 5. recovering the anode; 51. a second recycled carbon adsorption layer, 52. a second recycled conductive layer; 53. and a second recovered insulating layer.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 4, in this embodiment, a removing method for a device for removing heavy metals from water is provided, which includes the following steps:

step 1: filling the anode electrode 2 of the analog circuit battery pack 1 with a buffer medium 20, wherein the buffer medium 20 of the anode electrode 2 is a bicarbonate buffer medium in the adsorption process;

step 2: placing the cathode electrode 3 of the analog circuit battery pack 1 in a cathode pool in which a heavy metal solution 33 is stored, and enabling the carbon adsorption layer 31 to directly contact the wastewater;

step 2 a: the heavy metal solution 33 is pumped by the pump body, and the heavy metal solution 33 is controlled to pass through the cathode electrode 3 at a preset flow rate, so that the carbon adsorption layer 31 directly contacts the wastewater. Wherein in the specific embodiment, the Reynolds number of the wastewater fluid is increased by controlling the pipeline design and increasing the surface area, so that the efficiency of removing heavy metal ions is greatly improved.

And step 3: the analog circuit battery 1 is respectively electrified to the anode electrode 2 and the conducting layer 32 of the cathode electrode 3 through leads, so that the anode electrode 2 generates positive charges, the surface of the conducting layer 32 generates negative charges, and heavy metals in the heavy metal solution 33 are adsorbed on the surface of the carbon adsorption layer 31 by the negative charges on the conducting layer 32 of the cathode electrode 3.

As shown in fig. 3, there is also provided a recovery method for recovering and cleaning the heavy metal temporarily adsorbed by the above-mentioned treatment apparatus, wherein in the recovery method, the cathode electrode 3 in the original adsorption process is changed into the recovery anode 5, and the anode electrode 2 in the original adsorption process is changed into the recovery cathode 4;

the following working steps of the treatment device entering the recovery process are enumerated:

step 1: filling a recovery buffer medium 40 in the recovery cathode 4, wherein the recovery buffer medium 40 is potassium ferricyanide, potassium permanganate, nitrate, sulfate or bicarbonate in the step; the recovery cathode 4 comprises a first recovery carbon adsorption layer 41, a first recovery conductive layer 42 and a first recovery insulation layer 43 which are sequentially wrapped from inside to outside, and the recovery buffer medium 40 is positioned in the first recovery carbon adsorption layer 41;

step 2: the recovered pipeline is connected with a recovered anode 5 as shown in figure 3; in this step, in order to improve the recycling efficiency, the recycling anode 5 is designed to be a tubular structure, and the recycling anode 5 is sequentially provided with a second recycling carbon adsorption layer 51, a second recycling conductive layer 52 and a second recycling insulation layer 53 from the inside to the outside, wherein heavy metals are adsorbed on the surface of the second recycling carbon adsorption layer 51 of the recycling anode 5;

and step 3: the analog circuit battery 1 is electrified to the recovery cathode 4 and the second recovery conductive layer 52 of the recovery anode 5 through the conducting wires, respectively, so that the second recovery conductive layer 52 of the recovery anode 5 generates positive charges, and at the same time, the heavy metals in the second recovery carbon adsorption layer 51 of the recovery anode 5 are pushed out of the surface of the second recovery carbon adsorption layer 51 by the positive charges on the second recovery conductive layer 52.

In the recovery process, after heavy metal ions in the heavy metal solution 33 are adsorbed by the carbon adsorption layer 31, the cathode electrode 3 is adjusted by the analog circuit battery pack 1 to become the recovery anode 5 with positive charges through an internal circuit in order to facilitate the subsequent cleaning of the second recovery carbon adsorption layer 51 and the recovery of the heavy metals adsorbed on the surface of the second recovery carbon adsorption layer 51; it is possible to clean the second recovered carbon adsorption layer 51 of the recovered anode 5.

As shown in FIG. 4, when waste water through the pump body with heavy metal solution 33 from the inlet tube pump go into the processing apparatus of this application, heavy metal solution 33 is discharged from the outlet pipe again to constantly circulate through the pump body, the experimenter carries out the analysis of taking a sample to heavy metal solution 33 at different times, through the absorption processing back of 90 minutes, the processing apparatus of controlling again gets into the recovery process, the experimenter carries out the analysis of taking a sample to heavy metal solution 33 at different times, through the recovery processing back of 90 minutes.

The following table shows the initial concentrations of each heavy metal ion in the heavy metal solution 33 and the concentrations of each heavy metal ion after 90 minutes of treatment and 90 minutes of recovery treatment:

as shown in fig. 1 to 7, a processing apparatus for removing heavy metals from water includes an analog circuit battery 1 simulating the living of microalgae-generated cells, an anode electrode 2 with a built-in buffer medium 20, and a cathode pool for storing a heavy metal solution 33, wherein the analog circuit battery 1 is provided with a cathode output end 12 and an anode output end 11, wherein the cathode output end 12 is electrically connected to a cathode electrode 3 through a lead, the anode output end 11 is electrically connected to the anode electrode 2 through a lead, and the cathode electrode 3 is in contact with the heavy metal solution 33 in the cathode pool; and the cathode electrode 3 comprises a conductive layer 32 electrically connected with the cathode output end 12 and a carbon adsorption layer 31 wrapped on the surface of the conductive layer 32.

As shown in fig. 1 to 3, further, the cathode electrode 3 is a tubular structure (in this embodiment, the cathode electrode 3 is designed as a tubular structure because of its high heavy metal adsorption efficiency), and a through hole for allowing the heavy metal solution 33 to flow through is provided in the center of the cathode electrode 3 along its length, so that the carbon adsorption layer 31 contacts the wastewater. In this embodiment, wastewater containing heavy metals (i.e. heavy metal solution 33) is input into the through hole at a predetermined flow rate and discharged from the through hole, wherein the conductive layer 32 generates negative charges, and the carbon adsorption layer 31 is wrapped on the surface of the conductive layer 32, so that the heavy metals in the wastewater in the through hole are adsorbed by the carbon layer due to the negative charges. Because cathode output 12 is direct to be connected with conducting layer 32 and conducting layer 32 distributes at whole pipeline, make voltage distribution on the conducting layer 32 even, thereby can adsorb heavy metal ion fast, and make and do not have chemical reaction in the waste water, in addition lead to waste water to pass through the through-hole fast under the effect of velocity of flow, improve the efficiency of getting rid of heavy metal ion greatly, the heavy metal ion that can get rid of includes one or more in Ni, Mn, Pb, Zn, Cd, Cu, Hg, Cr, As, Co, Mo, Ag, Au, Pt, Pd, Rh, Ir, Re. The carbon layer that sets up can be durable for a long time, and is convenient for wash and recycle.

As shown in fig. 1-3, further, the cathode electrode 3 with a tubular structure comprises a carbon adsorption layer 31, a conductive layer 32 and an insulating layer 34 which are sequentially wrapped from inside to outside. The added insulating layer 34 can effectively avoid the condition of electric leakage. In the present embodiment, the structure of the anode electrode 2 is similar to that of the cathode electrode 3 in a tubular structure, and the anode electrode 2 comprises an anode carbon adsorption layer 21, an anode conductive layer 22 and an anode insulating layer 23 which are sequentially wrapped from inside to outside.

As shown in fig. 5 to 7, the cathode electrode 3 has a plate-like structure or a rod-like structure. In the present application, the cathode electrode 3 may be configured to be a plate-shaped structure and a rod-shaped structure, besides the above-mentioned tubular structure, wherein the plate-shaped structure and the rod-shaped structure may be conveniently matched with the equipment of the manufacturer, and the cathode electrode 3 may be configured to be different shapes according to different use environments, and the higher the area is, the higher the adsorption efficiency is. It should be noted that in the present application, in order to ensure that the adsorption thereof has been recovered efficiently, the cathode electrode 3 is a tubular structure as the main preferred implementation structure, and the plate-like structure or the rod-like structure of the cathode electrode 3 is only an auxiliary structure in special cases.

FIG. 1 shows a tubular cathode electrode 3 and a tubular anode electrode 2 according to the present invention; FIG. 2 shows a tubular cathode electrode 3 and another tubular anode electrode 2 according to the present invention; FIG. 3 is a schematic view of the working principle of the present invention in which the recovery anode 5 is a tubular structure and the recovery cathode 4 is a tubular structure; the cathode electrode 3 of fig. 1-2, and the recovery anode 5 of fig. 3 are all of the preferred embodiments: tubular.

For example, fig. 5 shows that the cathode electrode 3 and the anode electrode 2 are both rod-shaped structures; FIG. 6 shows a cathode 3 of a rod-like structure and an anode 2 of a tubular structure according to the present invention; FIG. 7 shows a cathode 3 of a rod-like structure and an anode 2 of another tube-like structure according to the present invention; the cathode electrode 3 of fig. 5 to 7 is a non-preferred structure, and is described as an example.

The cathode electrode 3 of the analog circuit battery pack 1 simulating the living of microalgae-generated cells is contacted with the heavy metal solution 33 in the cathode pool; the analog circuit battery 1 is respectively electrified to the anode electrode 2 and the conducting layer 32 of the cathode electrode 3 through leads, so that the anode electrode 2 generates positive charges, the surface of the conducting layer 32 generates negative charges, and heavy metals in the heavy metal solution 33 are adsorbed on the surface of the carbon adsorption layer 31 by the negative charges on the conducting layer 32; therefore, the method can effectively remove heavy metal ions including one or more of Ni, Mn, Pb, Zn, Cd, Cu, Hg, Cr, As, Co, Mo, Ag, Au, Pt, Pd, Rh, Ir and Re, and greatly improve the efficiency of removing heavy metals.

The traditional microalgae cell-producing live battery mainly has the problems of large internal resistance of a reactor, high material cost, low output power and the like; the battery pack used in the invention is the analog circuit battery pack 1 which simulates microalgae to generate cells for live, has high output power and is very stable, and meanwhile, because the analog circuit battery pack 1 adopts conventional electronic elements, the condition of biological decay does not exist, and the manufacturing cost is low, so the battery pack is suitable for batch production.

The analog circuit battery pack 1 is convenient to control, and can adjust the cathode electrode 3 into the recovery anode 5 with positive output through an internal circuit according to requirements; the subsequent cleaning of the second recycle carbon adsorption layer 51 on the recycle anode 5 and the recovery of the heavy metal adsorbed on the surface of the second recycle carbon adsorption layer 51 can be facilitated. Meanwhile, the second recycled carbon adsorption layer 51 on the surface of the second recycled conductive layer 52 can be durable for a long time and is convenient to clean and recycle.

Further, the conductive layer 32 is copper or iron or zinc or other conductive metal, etc.

Further, the buffer medium 20 is bicarbonate buffer or oxygen. In the adsorption process, wherein the anode electrode 2 is configured as shown in fig. 1 or fig. 6 when the buffer medium 20 is a bicarbonate buffer medium, the anode electrode 2 may be a tubular structure if the buffer medium 20 is oxygen. (as shown in FIGS. 2 and 7)

As shown in fig. 3, when the anode electrode 2 is changed into the recovery cathode 4 through the analog circuit battery 1 during the recovery process, the recovery buffer medium 40 in the recovery cathode 4 is potassium ferricyanide, potassium permanganate, nitrate, sulfate, bicarbonate.

Further, the output voltage of the analog circuit battery pack 1 is a voltage of 1 to 6V.

In this embodiment, since the carbon adsorption layer 31 is wrapped on the surface of the conductive layer 32, the voltage distribution on the conductive layer 32 is uniform, so that the carbon adsorption layer 31 can rapidly adsorb heavy metal ions, and no chemical reaction exists in the wastewater, and the heavy metal ions that can be removed include one or more of Ni, Mn, Pb, Zn, Cd, Cu, Hg, Cr, As, Co, Mo, Ag, Au, Pt, Pd, Rh, Ir, and Re.

The embodiments disclosed in this description are only an exemplification of the single-sided characteristics of the invention, and the scope of protection of the invention is not limited to these embodiments, and any other functionally equivalent embodiments fall within the scope of protection of the invention. Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. a treatment device for removing heavy metals in water, it is characterized in that: comprise the simulation circuit battery pack that imitates microalgae to produce cell live electricity, the anode electrode that is built with buffer medium, the cathode pool for storing heavy metal solution, wherein simulation circuit battery The group is provided with a cathode output terminal and an anode output terminal, wherein the cathode output terminal is electrically connected with a cathode electrode through a wire, the anode output terminal is electrically connected with an anode electrode through a wire, and the cathode electrode is in contact with the heavy metal solution in the cathode pool. and the cathode electrode comprises a conductive layer electrically connected with the cathode output end and a carbon adsorption layer wrapped on the surface of the conductive layer.

2 . The treatment device for removing heavy metals from water according to claim 1 , wherein the cathode electrode is a tubular structure, and the center of the cathode electrode is provided with a through hole along its length for allowing the heavy metal solution to flow through, so that the 2 . The carbon adsorption layer contacts the wastewater.

3 . The treatment device for removing heavy metals from water according to claim 2 , wherein the tubular structure cathode electrode comprises a carbon adsorption layer, a conductive layer and an insulating layer sequentially wrapped from the inside to the outside. 4 .

4 . The treatment device for removing heavy metals from water according to claim 2 , wherein the cathode electrode is a plate-like structure or a rod-like structure. 5 .

5 . The treatment device for removing heavy metals in water according to claim 1 , wherein the conductive layer is copper, iron or zinc. 6 .

6 . The treatment device for removing heavy metals in water according to claim 1 , wherein the buffer medium is a bicarbonate buffer medium or oxygen. 7 .

7 . The treatment device for removing heavy metals in water according to claim 1 , wherein the output voltage of the battery pack of the analog circuit is a voltage of 1-6V. 8 .

8. The method for removing a treatment device for removing heavy metals in water according to claim 1, wherein:

Include the following steps:

Step 1: Fill the anode electrode with a buffer medium, and the buffer medium of the anode electrode is bicarbonate buffer medium or oxygen;

Step 2: place the cathode electrode in the cathode pool stored with the heavy metal solution, and make the carbon adsorption layer directly contact the wastewater;

Step 3: The analog circuit battery pack is energized to the anode electrode and the conductive layer of the cathode electrode respectively through the wires, so that the anode electrode generates positive charge, the surface of the cathode electrode conductive layer generates negative charge, and at the same time, the heavy metals in the heavy metal solution are removed. The negative charges on the conductive layer of the cathode electrode are adsorbed on the surface of the carbon adsorption layer.

9 . The method for removing a treatment device for removing heavy metals in water according to claim 8 , wherein step 2 a is further provided between step 2 and step 3 . 10 .

Step 2a: pump the heavy metal solution through the pump body, and control the heavy metal solution to pass through the cathode electrode at a preset flow rate, so that the carbon adsorption layer directly contacts the waste water; the heavy metal solution includes Ni, Mn, Pb, Zn, Cd, One or more heavy metal ions of Cu, Hg, Cr, As, Co, Mo, Ag, Au, Pt, Pd, Rh, Ir, Re.

10. The recovery method of a treatment device for removing heavy metals in water according to claim 1, is characterized in that:

Step 1: The analog circuit battery pack turns the cathode electrode into a recycling anode with a positive output through the internal circuit adjustment, and at the same time, the anode electrode is adjusted through the internal circuit into a recycling cathode with a negative charge output; and the recycling cathode is filled with recycling cathodes. Buffer medium, the recovery buffer medium is a kind of potassium ferricyanide, potassium permanganate, nitrate, sulfate, bicarbonate; wherein the recovery cathode comprises the first recovery carbon adsorption layer wrapped in turn from inside and outside, a first recycling conductive layer, a first recycling insulating layer, and the recycling buffer medium is located in the first recycling carbon adsorption layer;

Step 2: The recycling anode is placed in the cathode pool for storing the heavy metal solution, and the recycling anode is sequentially provided with a second recycling carbon adsorption layer, a second recycling conductive layer, and a second recycling insulating layer from the inside out. Heavy metals are adsorbed on the surface of the second recovery carbon adsorption layer;

Step 3: The simulated circuit battery pack is energized to the recovery cathode and the recovery conductive layer of the recovery anode respectively through the wires, so that the second recovery conductive layer of the recovery anode generates a positive charge, and at the same time, the second recovery carbon adsorption layer of the recovery anode is energized. Heavy metals are pushed out of the surface of the second recovered carbon adsorption layer by the positive charges on the second recovered conductive layer.