CN112919589A - Penetrating type electro-catalysis water treatment device and operation method - Google Patents
Penetrating type electro-catalysis water treatment device and operation method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
- C02F2001/46138—Electrodes comprising a substrate and a coating
- C02F2001/46142—Catalytic coating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
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- C02F2001/46157—Perforated or foraminous electrodes
- C02F2001/46161—Porous electrodes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
A penetration type electrocatalysis water treatment device and an operation method thereof comprise a shell, wherein one end of the shell is provided with a water inlet, the other end of the shell is provided with a water outlet, a plurality of cathode plates and double-layer sealed porous anode plates which are sequentially arranged at intervals are arranged inside the shell, the water inlet is communicated with a water inlet pump, wastewater to be treated enters from the water inlet of the shell through the water inlet pump, flows between each cathode plate and the double-layer sealed porous anode plates and flows out from the water outlet of the shell, and the water outlet is positioned below the shell. The result of treating the high-salt-content wastewater shows that the device has good electrocatalytic oxidation capacity and can obviously improve the removal efficiency of chroma, COD and ammonia nitrogen in the wastewater.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a penetrating type electrocatalysis water treatment device and an operation method thereof.
Background
The electro-catalysis water treatment technology is a high-efficiency water treatment technology for removing organic pollutants by rapid oxidation, and has wide application prospect. The basic principle of electrocatalytic water treatment technology is to reduce or remove pollutants from wastewater by causing direct electrochemical reactions or indirect electrochemical conversions of the pollutants at electrodes. It can be divided into directElectrolysis and indirect electrolysis. Direct electrolysis refers to the removal of contaminants from wastewater by direct oxidation or reduction at the electrodes. Indirect electrolysis refers to the use of electrochemically generated redox species (e.g. chlorate, hypochlorite, H with strong oxidation properties)2O2And O3And solvated electrons, HO2Isoradicals) act as a reactant or catalyst to convert the contaminants into less toxic substances. The electrocatalysis treatment technology has the characteristics of multifunction, high flexibility, no pollution or little pollution, easy controllability and the like, and meanwhile, the electrocatalysis treatment technology has the advantages of small equipment, small occupied area, simple operation management and good treatment effect, and is increasingly valued by people at present. However, the practical application of the method has the defects of high power consumption, unstable effect and the like, so that the method prevents the wide application of the method. The search for energy-saving and efficient electro-catalytic water treatment technology and equipment has become an important direction for the research of electrochemical application technology.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a penetrating type electrocatalysis water treatment device and an operation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
a penetration type electrocatalysis water treatment device comprises a water inlet pump 1, a power supply 2, a cathode and anode connecting copper bar 3, a water inlet 4, a gas collecting hood 5, a shell 6, a central water collecting pipe 7, a central water collecting pipe interface flange 8, a water outlet 9, a slag discharging port 10, a water pumping pipeline valve 11, a backwashing pipeline valve 12, a self-sucking pump 13, a backwashing pump 14, an electrode group upper frame 15 and a lower frame 22, a connecting hose 16, an insulating rod end-sealing 17, an insulating rod 18, an insulating bush 19, a cathode plate 21 and a double-layer sealed porous anode plate 22, wherein one end of the shell 6 is provided with the water inlet 4, the other end of the shell is provided with the water outlet 9, a plurality of cathode plates 21 and double-layer sealed porous anode plates 22 which are sequentially arranged at intervals are arranged inside the shell 6, the water inlet 4 is communicated with the water inlet pump 1, wastewater to be treated enters from the shell water inlet 4 through, and flows out of a shell water outlet 9, wherein the water outlet 9 is positioned below the shell 6.
The two sides of the cathode plate 21 are both provided with connecting holes 27, the two sides of the double-layer sealed porous anode plate 20 are both provided with connecting holes 32, and the connecting holes are connected and assembled through the insulating rod 18, the insulating bush 19 and the insulating rod end sealing 17.
The adjacent cathode plates 21 and the double-layer sealed porous anode plate 22 are separated by the insulating bush 20.
The assembly ends of the cathode plate 21 and the double-sealed porous anode plate 22 are assembled by the insulating rod end-capping 17.
The cathode plate 21 is provided with four connecting holes 32 at both sides thereof, a cathode terminal 30 at one end thereof, and a cathode terminal hole 31.
The double-layer sealed porous anode plate 22 is formed by welding two porous anode plates which are oppositely arranged with two side titanium plates 23 and two side titanium plates 28, the upper end and the lower end of the double-layer sealed porous anode plate 22 are respectively provided with an insulating plate 26 and an insulating plate 29 to form a sealed cavity, the upper part of the titanium plate 23 is provided with a wiring hole 24, and the insulating plate 26 is provided with two suction water outlets 25.
The titanium plate 23 and the titanium plate 28 are solid titanium plates, and the length of the titanium plate 23 is 100mm higher than that of the double-layer sealed porous anode plate 2230-.
The double-layer sealed porous anode plate 22 is a titanium electrode coated with iridium oxide, ruthenium oxide, tantalum oxide, iridium-tantalum alloy oxide, iridium-ruthenium alloy oxide, platinum-iridium-ruthenium alloy oxide, lead oxide, antimony-tin oxide or platinum.
The insulating plate is made of PVC, plastics, silicon rubber and PTFE.
The suction water outlet 25 is connected with the central water collecting pipe 7 through the hose 16, the central water collecting pipe 7 is connected with the self-sucking pump 13 through the central water collecting pipe connecting flange 8, when the equipment produces water, a valve of a water sucking pipeline is opened, the self-sucking pump 13 runs to generate negative pressure, and sewage is sucked to the central water collecting pipe 7 from the shell through the porous electro-catalytic anode plate 22;
the central water collecting pipe 7 is simultaneously connected with a backwashing pump 14, a backwashing pipeline valve 12 and the backwashing pump 14 are intermittently opened, and when the water yield is reduced, the backwashing pipeline valve 12 and the backwashing pump 14 are opened to reversely pressurize and flush the porous electrocatalysis anode plate 22.
The cathode plate 21 is connected with a cathode copper bar 3 of the power supply 2 through a cathode wiring board 30, and the double-layer sealed porous anode plate 22 is connected with an anode copper bar of the power supply 2 through an anode wiring board 23.
The cathode plate 21 is made of a titanium plate, a titanium mesh, a stainless steel plate, a stainless steel mesh or a graphite plate.
A penetration type electrocatalysis water treatment device and an operation method thereof, comprising the following steps:
a. the external power supply 2 acts on the cathode plate 21 through the cathode copper bar 3-1 and acts on the double-layer sealed porous anode plate 22 through the anode copper bar 3-2;
b. pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1-10t/h, and the wastewater sequentially passes through a cathode plate 21 and a double-layer sealed porous anode plate 22 to form baffling and backflow;
c. the water pumping pipeline valve 11 is opened, the self-priming pump 13 operates to provide negative pressure, so that wastewater to be treated penetrates through the double-layer sealed porous anode plate 22, a 5-100 micron pore channel is formed in the porous anode plate, the wastewater forms a reaction area in the pore channel, is concentrated to the central water collecting pipe 7 and is connected with a water pumping pipeline through the central water collecting pipe flange 8 to form water production;
d. regulating the voltage of the applied electric field to 1-15.0V and the current density to 5-60mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 7, and water chromaticity, ammonia nitrogen and COD indexes are detected.
f. By-products of hydrogen and oxygen generated in the electro-oxidation treatment process are collected and treated by the gas-collecting hood 5 and then discharged;
g. after the equipment runs for a period of time, a valve of a slag discharging port 10 is opened to discharge slag.
h. After the equipment runs for a period of time, the self-priming pump 13 and the water pumping pipeline valve 11 are closed, the backwashing valve 12 and the backwashing pump 14 are opened, and backwashing is carried out on the porous electrode plate.
The invention has the beneficial effects that:
1 increasing the actual electrode loading area per unit volume using a penetrating electrode structure.
2, by introducing the porous electrocatalytic anode, the reaction mass transfer efficiency and the reaction path are increased, and the reaction efficiency of electrocatalytic oxidation is improved.
3 the electrocatalytic anode is a porous electrode, and the penetrating water treatment process enhances the reaction efficiency and is beneficial to realizing the application of the electrocatalytic oxidation technology in the actual water treatment process.
Drawings
FIG. 1 is a process flow diagram of the apparatus of the present invention.
FIG. 2 is an electrode assembly diagram of the device of the present invention.
FIG. 3 is a schematic diagram of the anode of the device of the present invention.
FIG. 4 is a schematic view of the cathode structure of the device of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-4: including taking into water inlet 4, delivery port 9, row's cinder notch 10 and gas collecting cover 5's casing 6, be provided with a plurality of negative plates 21 and the porous anode plate of double-deck sealed formula 22 of interval arrangement in proper order in the casing 6, pending waste water gets into by casing water inlet 4 through intake pump 1, flows between each negative plate 21 and the porous anode plate of double-deck sealed formula 22 to from the outflow of casing delivery port 9, self priming pump 13 opens during water production, and backwash pump 14 opens during the back flush.
The cathode plate 21 and the double-layer sealed porous anode plate 20 are provided with connecting holes 27 and 32 on both sides and connected through an insulating rod 19.
The adjacent cathode plates 21 and the double-layer sealed porous anode plate 22 are separated by the insulating bush 20.
The double-sealed porous anode plate 22 is sealed by an insulating plate 26 and an insulating plate 29, and two suction water outlets 25 are formed at one end of the wiring.
The suction water outlet 25 is connected with the central water collecting pipe 16 through the hose 17, the central water collecting pipe 16 is connected with the self-sucking pump 13, when the equipment produces water, the self-sucking pump 13 runs to generate negative pressure, and sewage penetrates through the porous electro-catalytic anode plate 22 from the shell to be sucked to the central water collecting pipe 16.
The central water collecting pipe 16 is connected with the backwashing pump 14, the backwashing pump 14 is intermittently started, and when the water yield is reduced, the backwashing pump 14 is started to reversely pressurize and flush the porous electrocatalytic anode plate 22.
The cathode plate 21 is connected with the cathode copper bar 3 of the power supply 2 through a cathode wiring board 30, and the double-layer sealed porous anode plate is connected with the anode copper bar of the power supply 2 through an anode wiring board 23.
The insulating plate is made of PVC, plastics, silicon rubber and PTFE.
The cathode plate is made of a titanium plate, a titanium net, a stainless steel plate, a stainless steel net and a graphite plate.
The double-layer sealed porous anode plate 22 is a titanium electrode coated with iridium oxide, ruthenium oxide, tantalum oxide, iridium-tantalum alloy oxide, iridium-ruthenium alloy oxide, platinum-iridium-ruthenium alloy oxide, lead oxide, antimony-tin oxide or platinum.
The wastewater to be treated enters the shell 6 from the water inlet 4, sequentially flows through the double-layer sealed porous anode plate 22, penetrates through the porous anode plate and flows out of the central water collecting pipe 16, and the water outlet 9 is positioned below the shell 6.
The invention designs a sealed porous electro-catalytic anode, and the wastewater to be treated penetrates through the electrode micro-channels to participate in the electro-catalytic oxidation reaction, thereby effectively improving the removal efficiency of the chromaticity, ammonia nitrogen and COD of the wastewater. The specific operation is carried out according to the following steps:
a. the external power supply 2 acts on the cathode plate 21 and the sealed porous anode plate 22 through the cathode copper bar 3 and the anode copper bar respectively;
b. pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1-10t/h, and the wastewater sequentially passes through a cathode plate 21 and a sealed porous anode plate 22 to form baffling and backflow;
c. the self-priming pump 13 provides negative pressure to enable the wastewater to be treated to penetrate through the sealed porous anode plate 22, a pore channel of 5-100 microns is formed in the porous anode plate, and the wastewater forms a reaction zone in the pore channel and is then concentrated to the central water collecting pipe 8 to be discharged;
d. regulating the voltage of the applied electric field to 1-15.0V and the current density to 5-60mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 8, and water chromaticity, ammonia nitrogen and COD indexes are detected.
The following are several specific examples.
Example 1
Ruthenium oxide coated titanium anode permeable electrocatalytic reactor for treating salt-containing industrial wastewater:
a. the cathode plate 21 is a stainless steel cathode pressing plate, and the sealed porous anode plate 22 is a ruthenium oxide coated titanium anode plate;
b. the method comprises the following steps of (1) pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1t/h, and the wastewater sequentially passes through a cathode plate 21 and a sealed porous anode plate 22 to form baffling and backflow;
c. the self-priming pump 13 provides negative pressure to make the waste water to be treated penetrate the sealed porous anode plate 22 to form a reaction area in the micro-channel and then concentrate to the central water collecting pipe 8 for discharge;
d. the voltage of an external electric field is adjusted to be 1V, and the current density is adjusted to be 5mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 8, and water chromaticity, ammonia nitrogen and COD indexes are detected.
The COD of the inlet water is 564mg/L and the ammonia nitrogen is 240mg/L, the chroma in the water body can be completely removed, the COD of the outlet water is reduced to 50mg/L, and the ammonia nitrogen is reduced to 1 mg/L.
Example 2
Treating salt-containing industrial wastewater by using a lead oxide coated titanium anode permeable electrocatalysis reactor:
a. the cathode plate 21 is a stainless steel cathode plate, and the sealed porous anode plate 22 is a lead oxide coated titanium anode plate;
b. the method comprises the following steps of (1) pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1t/h, and the wastewater sequentially passes through a cathode plate 21 and a sealed porous anode plate 22 to form baffling and backflow;
c. the self-priming pump 13 provides negative pressure to make the waste water to be treated penetrate the sealed porous anode plate 22 to form a reaction area in the micro-channel and then concentrate to the central water collecting pipe 8 for discharge;
d. the voltage of an external electric field is adjusted to be 1V, and the current density is adjusted to be 5mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 8, and water chromaticity, ammonia nitrogen and COD indexes are detected.
The COD of the inlet water is 564mg/L and the ammonia nitrogen is 240mg/L, the chroma in the water body can be completely removed, the COD of the outlet water is reduced to 55mg/L, and the ammonia nitrogen is reduced to 2.5 mg/L.
Example 3
a. The cathode plate 21 is a stainless steel cathode pressing plate, and the sealed porous anode plate 22 is an antimony-tin oxide coated titanium anode plate;
b. the method comprises the following steps of (1) pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1t/h, and the wastewater sequentially passes through a cathode plate 21 and a sealed porous anode plate 22 to form baffling and backflow;
c. the self-priming pump 13 provides negative pressure to make the waste water to be treated penetrate the sealed porous anode plate 22 to form a reaction area in the micro-channel and then concentrate to the central water collecting pipe 8 for discharge;
d. the voltage of an external electric field is adjusted to be 1V, and the current density is adjusted to be 5mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 8, and water chromaticity, ammonia nitrogen and COD indexes are detected.
The COD of the inlet water is 564mg/L and the ammonia nitrogen is 240mg/L, the chroma in the water body can be completely removed, the COD of the outlet water is reduced to 48mg/L, and the ammonia nitrogen is reduced to 1.2 mg/L.
Example 4
Treating salt-containing industrial wastewater by using an iridium oxide coated titanium anode penetrating electrocatalysis reactor:
a. the cathode plate 21 is a stainless steel cathode pressing plate, and the sealed porous anode plate 22 is an iridium oxide coated titanium anode plate;
b. the method comprises the following steps of (1) pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1t/h, and the wastewater sequentially passes through a cathode plate 21 and a sealed porous anode plate 22 to form baffling and backflow;
c. the self-priming pump 13 provides negative pressure to make the waste water to be treated penetrate the sealed porous anode plate 22 to form a reaction area in the micro-channel and then concentrate to the central water collecting pipe 8 for discharge;
d. the voltage of an external electric field is adjusted to be 1V, and the current density is adjusted to be 5mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 8, and water chromaticity, ammonia nitrogen and COD indexes are detected.
The COD of the inlet water is 564mg/L and the ammonia nitrogen is 240mg/L, the chroma in the water body can be completely removed, the COD of the outlet water is reduced to 55mg/L, and the ammonia nitrogen is reduced to 2.4 mg/L.
Example 5
The platinum-coated titanium anode penetrating electrocatalysis reactor is used for treating industrial wastewater containing salt:
a. the cathode plate 21 is a stainless steel cathode pressing plate, and the sealed porous anode plate 22 is a platinum-coated titanium anode plate;
b. the method comprises the following steps of (1) pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1t/h, and the wastewater sequentially passes through a cathode plate 21 and a sealed porous anode plate 22 to form baffling and backflow;
c. the self-priming pump 13 provides negative pressure to make the waste water to be treated penetrate the sealed porous anode plate 22 to form a reaction area in the micro-channel and then concentrate to the central water collecting pipe 8 for discharge;
d. the voltage of an external electric field is adjusted to be 1V, and the current density is adjusted to be 5mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 8, and water chromaticity, ammonia nitrogen and COD indexes are detected.
The COD of the inlet water is 564mg/L and the ammonia nitrogen is 240mg/L, the chroma in the water body can be completely removed, the COD of the outlet water is reduced to 40mg/L, and the ammonia nitrogen is reduced to 1.5 mg/L.
Example 6
The platinum iridium ruthenium composite oxide is coated on a titanium anode penetrating electrocatalytic reactor to treat salt-containing industrial wastewater:
a. the cathode plate 21 is a stainless steel cathode pressing plate, and the sealed porous anode plate 22 is a titanium anode plate coated with platinum-iridium-ruthenium composite oxide;
b. the method comprises the following steps of (1) pumping the salt-containing industrial wastewater electrocatalysis wastewater from a water inlet 4 by using a circulating pump 1, wherein the flow rate is 1t/h, and the wastewater sequentially passes through a cathode plate 21 and a sealed porous anode plate 22 to form baffling and backflow;
c. the self-priming pump 13 provides negative pressure to make the waste water to be treated penetrate the sealed porous anode plate 22 to form a reaction area in the micro-channel and then concentrate to the central water collecting pipe 8 for discharge;
d. the voltage of an external electric field is adjusted to be 1V, and the current density is adjusted to be 5mA/cm2；
e. After stable operation for 1h, sampling is carried out from the water outlet of the central water collecting pipe 8, and water chromaticity, ammonia nitrogen and COD indexes are detected.
The COD of the inlet water is 564mg/L and the ammonia nitrogen is 240mg/L, the chroma in the water body can be completely removed, the COD of the outlet water is reduced to 36mg/L, and the ammonia nitrogen is reduced to 0.8 mg/L.
The technical scheme of the invention has various technical suggestions, and the theoretical basis of the alternative scheme is as follows:
the sealed porous anode plate 22 used in the given embodiment of the present invention is an iridium oxide, ruthenium oxide, iridium ruthenium alloy oxide, platinum iridium ruthenium alloy oxide, lead oxide, antimony-tin oxide, or platinum-coated titanium electrode, and the cathode plate 21 is made of titanium, stainless steel, or aluminum, from which it is inferred that: when the anode plate 9 adopts other types of electrodes (such as carbon cloth, carbon fiber, graphite electrode and the like), and the cathode pressing plate 8 adopts other types of electrodes (such as carbon cloth, carbon fiber, graphite electrode and the like), the technical effect of the invention can be realized.
The penetrating electrode assembly mode in the embodiment provided by the invention is an improved mode of electrode arrangement, and a person skilled in the art can obtain technical teaching according to the technical scheme provided by the embodiment of the invention, and the technical effect of the invention is realized by changing the structure and the operation mode of the penetrating electrode.
In the method of the present invention, the sealed porous anode plate 22 adopts a double-layer welding sealing manner, and those skilled in the art can obtain technical teaching according to the technical scheme provided by the present invention, and adopt different sealing methods to achieve the same technical effect.
The invention designs a penetrating electrocatalysis water treatment device, creatively processes a porous titanium anode into a sealed anode assembly, utilizes negative pressure suction to enable waste water to penetrate through an inner pore passage of the porous anode plate, and forms a reinforced oxidation reaction zone in the inner pore passage, thereby playing the beneficial effect of reinforcing electrocatalysis oxidation.
In addition, the porous anode plate assembly greatly increases the filling area of the electric anode in unit volume, and is beneficial to improving the utilization efficiency of the device.
Claims (10)
1. The penetrating electrocatalysis water treatment device is characterized by comprising a shell (6), wherein one end of the shell (6) is provided with a water inlet (4), the other end of the shell is provided with a water outlet (9), a plurality of cathode plates (21) and double-layer sealed porous anode plates (22) which are sequentially arranged at intervals are arranged inside the shell (6), the water inlet (4) is communicated with a water inlet pump (1), wastewater to be treated enters from the water inlet (4) of the shell through the water inlet pump (1), flows between each cathode plate (21) and the double-layer sealed porous anode plates (22) and flows out from the water outlet (9) of the shell, and the water outlet (9) is positioned below the shell (6).
2. The penetrating electrocatalytic water treatment device according to claim 1, wherein the cathode plate (21) is opened with connection holes (27) on both sides, the double-sealed porous anode plate (20) is opened with connection holes (32) on both sides, and the connection and assembly are performed through the insulating rod (18), the insulating bush (19) and the insulating rod end cap (17).
3. A penetration type electrocatalytic water treatment device according to claim 1, wherein each of the adjacent cathode plates (21) and double-sealed porous anode plate (22) are spaced by an insulating bush (20);
four connecting holes (32) are formed in two sides of the cathode plate (21), a cathode terminal (30) is arranged at one end of the cathode plate, and a cathode wiring hole (31) is formed in the cathode plate.
4. The penetrating electrocatalytic water treatment device according to claim 1, wherein the double-sealed porous anode plate (22) is formed by welding two porous anode plates arranged oppositely with two titanium plates (23) and (28) at two sides, the upper and lower ends of the double-sealed porous anode plate (22) are respectively provided with an insulating plate (26) and an insulating plate (29) to form a sealed cavity, the upper part of the titanium plate (23) is provided with a wiring hole (24), and the insulating plate (26) is provided with two suction water outlets (25).
5. The penetration type electrocatalytic water treatment device according to claim 4, wherein the titanium plate (23) and the titanium plate (28) are solid titanium plates, and the length of the titanium plate (23) is 30-100mm higher than that of the double-layer sealed porous anode plate (22).
6. The penetrating electrocatalytic water treatment device according to claim 4, wherein the double-sealed porous anode plate (22) is an iridium oxide, ruthenium oxide, tantalum oxide, iridium-tantalum alloy oxide, iridium-ruthenium alloy oxide, platinum-iridium-ruthenium alloy oxide, lead oxide, antimony-tin oxide, or platinum-coated titanium electrode.
7. The device of claim 4, wherein the insulating plate is made of PVC, plastic, silicone rubber, or PTFE.
8. A penetrating electrocatalytic water treatment device as set forth in claim 4,
the suction water outlet (25) is connected with the central water collecting pipe (7) through a hose (16), the central water collecting pipe (7) is connected with the self-sucking pump (13) through a central water collecting pipe connecting flange (8), when the equipment produces water, a valve of a water sucking pipeline is opened, the self-sucking pump (13) operates to generate negative pressure, and sewage penetrates through the porous electro-catalytic anode plate (22) from the shell and is sucked to the central water collecting pipe (7);
the central water collecting pipe (7) is simultaneously connected with a backwashing pump (14), a backwashing pipeline valve (12) and the backwashing pump (14) are intermittently opened, and when the water yield is reduced, the backwashing pipeline valve (12) and the backwashing pump (14) are opened to reversely pressurize and flush the porous electrocatalysis anode plate (22).
9. The penetration type electrocatalytic water treatment device as set forth in claim 1, wherein said cathode plate (21) is connected with the cathode copper bar (3) of the power supply (2) through a cathode terminal plate (30), and the double-sealed porous anode plate (22) is connected with the anode copper bar of the power supply (2) through an anode terminal plate (23);
the cathode plate (21) is made of a titanium plate, a titanium net, a stainless steel plate, a stainless steel net or a graphite plate.
10. An operation method of a penetration type electrocatalysis water treatment device, which is characterized by comprising the following steps:
a. the external power supply (2) acts on the cathode plate (21) through the cathode copper bar and acts on the double-layer sealed porous anode plate (22) through the anode copper bar;
b. pumping the salt-containing industrial wastewater electrocatalytic wastewater from a water inlet (4) by using a circulating pump (1), wherein the flow is 1-10t/h, and the wastewater sequentially passes through a cathode plate (21) and a double-layer sealed porous anode plate (22) to form baffling and backflow;
c. a water pumping pipeline valve (11) is opened, a self-sucking pump (13) operates to provide negative pressure, so that wastewater to be treated penetrates through a double-layer sealed porous anode plate (22), a pore canal with the diameter of 5-100 microns is formed in the porous anode plate, the wastewater forms a reaction area in the pore canal, is concentrated to a central water collecting pipe (7) and is connected with a water pumping pipeline through a central water collecting pipe flange (8) to form water production;
d. regulating the voltage of the applied electric field to 1-15.0V and the current density to 5-60mA/cm2；
e. After stable operation for 1h, sampling from the water outlet of the central water collecting pipe (7) to detect water chroma, ammonia nitrogen and COD indexes;
f. byproducts hydrogen and oxygen generated in the electro-oxidation treatment process are collected and treated by a gas-collecting hood (5) and then discharged;
g. after the equipment runs for a period of time, a valve of the slag discharging port (10) is opened to discharge slag.
h. After the equipment runs for a period of time, the self-priming pump (13) and the water pumping pipeline valve (11) are closed, the backwashing valve (12) and the backwashing pump (14) are opened, and backwashing is carried out on the porous electrode plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114380369A (en) * | 2022-01-27 | 2022-04-22 | 重庆融极环保工程有限公司 | Device and method for rapidly recovering phosphate based on weak electric field |
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| KR200333663Y1 (en) * | 2003-08-22 | 2003-11-14 | 코오롱건설주식회사 | A continuous electrical analytic oxidation reactor of waste water with high concentrated nitrogen compound |
| US20130146448A1 (en) * | 2011-12-12 | 2013-06-13 | Hon Hai Precision Industry Co., Ltd. | Membrane reactor |
| CN109279685A (en) * | 2018-11-22 | 2019-01-29 | 陕西科技大学 | A kind of disk type electro-catalysis water treatment facilities |
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| RU2087423C1 (en) * | 1993-12-09 | 1997-08-20 | Закрытое акционерное общество "РЭП Водоканал" | Method of cleaning water streams |
| US20020153245A1 (en) * | 2001-02-14 | 2002-10-24 | Henuset Yves Michel | Flow-through eletrochemical reactor for wastewater treatment |
| KR200333663Y1 (en) * | 2003-08-22 | 2003-11-14 | 코오롱건설주식회사 | A continuous electrical analytic oxidation reactor of waste water with high concentrated nitrogen compound |
| US20130146448A1 (en) * | 2011-12-12 | 2013-06-13 | Hon Hai Precision Industry Co., Ltd. | Membrane reactor |
| CN109279685A (en) * | 2018-11-22 | 2019-01-29 | 陕西科技大学 | A kind of disk type electro-catalysis water treatment facilities |
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| CN114380369A (en) * | 2022-01-27 | 2022-04-22 | 重庆融极环保工程有限公司 | Device and method for rapidly recovering phosphate based on weak electric field |
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