CN215480277U - Arsenic-containing wastewater treatment device - Google Patents
Arsenic-containing wastewater treatment device Download PDFInfo
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- CN215480277U CN215480277U CN202121170510.5U CN202121170510U CN215480277U CN 215480277 U CN215480277 U CN 215480277U CN 202121170510 U CN202121170510 U CN 202121170510U CN 215480277 U CN215480277 U CN 215480277U
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- electrolytic
- cathode
- arsenic
- tank
- anode
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- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 51
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 18
- 238000009792 diffusion process Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims abstract description 10
- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 238000005276 aerator Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 7
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 7
- 238000001556 precipitation Methods 0.000 abstract description 7
- 239000008394 flocculating agent Substances 0.000 abstract description 6
- 230000015271 coagulation Effects 0.000 abstract description 4
- 238000005345 coagulation Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 24
- 238000005868 electrolysis reaction Methods 0.000 description 24
- 239000002351 wastewater Substances 0.000 description 15
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 9
- 239000000084 colloidal system Substances 0.000 description 9
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 8
- 229910001448 ferrous ion Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910001447 ferric ion Inorganic materials 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229960004887 ferric hydroxide Drugs 0.000 description 5
- 239000010842 industrial wastewater Substances 0.000 description 5
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910021389 graphene Inorganic materials 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000003911 water pollution Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- -1 hydroxyl ions Chemical class 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
- Physical Water Treatments (AREA)
Abstract
The utility model discloses an arsenic-containing wastewater treatment device, which comprises an electrolytic tank, wherein an electrolytic device is arranged in the middle of the electrolytic tank, an insulating base is arranged between the electrolytic device and the electrolytic tank, the electrolytic device comprises an electrolytic cathode, an electrolytic anode is arranged in the electrolytic cathode, an air phase is arranged between the electrolytic cathode and the electrolytic anode, an air diffusion cathode is arranged on one side of the electrolytic cathode close to the electrolytic anode, a plurality of diffusion channels are arranged on two sides of the electrolytic cathode, the electrolytic anode is connected with a solar storage battery through a power-on arm, ultrasonic probes are arranged between the electrolytic cathode and the electrolytic anode and in the electrolytic tank, a water inlet and a water outlet are respectively arranged on two sides of the electrolytic tank, a sedimentation tank is arranged at the bottom of the electrolytic tank, and an aerator is also arranged in the electrolytic tank. The method carries out arsenic-containing wastewater treatment by adopting a ferroelectric coagulation arsenic precipitation mode, and effectively solves the problems that arsenic-containing substances cannot be effectively removed, a flocculating agent needs to be added, the treatment cost is high and the like in the prior art.
Description
Technical Field
The utility model belongs to the technical field of arsenic-containing wastewater treatment equipment, and particularly relates to an arsenic-containing wastewater treatment device.
Background
With the increasing industrial production, the discharge amount of industrial arsenic-containing waste water is increased, if the waste water is directly discharged without being treated, the biochemical oxygen demand is reduced, the peripheral soil is also seriously polluted, and arsenide is a toxic substance, and can cause harm to people when water enters human bodies through food. By treating the industrial wastewater with arsenic, the water pollution of China can be relieved, and the economic loss caused by the water pollution is reduced, so that the arsenic-containing wastewater treatment has wide development prospect in future development of China. However, the existing arsenic-containing wastewater treatment device has a complex structure, cannot effectively treat arsenide of wastewater, has high energy consumption and low treatment efficiency during treatment, often needs to directly add a flocculating agent and the like, and improves the wastewater treatment cost.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects, the arsenic-containing wastewater treatment device provided by the utility model treats the arsenic-containing wastewater in a ferroelectric coagulation arsenic precipitation mode without adding a flocculating agent, and effectively solves the problems that arsenic-containing substances cannot be effectively removed, a flocculating agent needs to be added, the treatment cost is high and the like in the prior art.
In order to achieve the purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows: provides an arsenic-containing wastewater treatment device, which comprises an electrolytic bath, wherein the middle part of the electrolytic bath is provided with an electrolytic device, an insulating base is arranged between the electrolytic device and the electrolytic bath, the electrolytic device comprises an electrolytic cathode, two cylindrical electrolytic anodes are arranged in the electrolytic cathode, the electrolytic cathode is not directly contacted with the electrolytic anodes, and an air phase is arranged between the electrolytic cathode and the electrolytic anode, one side of the electrolytic cathode, which is close to the electrolytic anode, is provided with an air diffusion cathode, a plurality of diffusion channels are arranged on two sides of the electrolytic cathode, the other end of each diffusion channel is communicated with the electrolytic cell, the electrolytic anode is connected with the solar storage battery through an electrified arm, ultrasonic probes are arranged between the electrolytic cathode and the electrolytic anode and in the electrolytic cell, the ultrasonic probes are connected with an ultrasonic device, a water inlet and a water outlet are respectively arranged on two sides of the electrolytic cell, a sedimentation tank is arranged at the bottom of the electrolytic cell, and an aerator is also arranged in the electrolytic cell.
Further, the electrolytic anode is an iron rod.
Further, the electrolytic cathode is a low carbon steel plate.
Further, the air diffusion cathode is porous carbon cloth, and a hydrophobic air diffusion layer and a catalyst layer are arranged on one side of the air phase of the porous carbon cloth.
Further, the catalyst layer is nonmetal black red phosphorus loaded by graphene oxide.
Further, the solar storage battery is connected with the solar panel.
In summary, the utility model has the following advantages:
1. according to the utility model, arsenic-containing wastewater is treated in a ferroelectric coagulation arsenic precipitation manner without adding a flocculating agent, so that the problems that arsenic-containing substances cannot be effectively removed, a flocculating agent needs to be added, the treatment cost is high and the like in the prior art are effectively solved.
2. When arsenic-containing wastewater is treated, a large amount of arsenic-containing wastewater enters an electrolytic tank from a water inlet, the water level is kept at the same height in the electrolytic working process, a solar storage battery supplies power to an electrolytic anode through an electrified arm, the electrolytic anode made of an iron rod loses electrons to become ferrous ions, a low-carbon steel plate is used as an electrolytic cathode to reduce water to generate hydrogen, an aerator enables a large amount of oxygen in the air to be rapidly dissolved in the water, then an air diffusion cathode and ultrasonic waves emitted by an ultrasonic probe are cooperated to reduce the oxygen dissolved in the water from the air to generate hydrogen peroxide in large amount through the electrolytic cathode, the generated hydrogen peroxide is rapidly oxidized to form the ferrous ions, the ferric ions generated in the electrolytic cathode enter the electrolytic tank through a diffusion channel, and the ferric ions in the electrolytic tank are combined with hydroxyl ions in the arsenic-containing wastewater to form ferric hydroxide colloid with strong adsorbability, ferric hydroxide colloid has high specificity surface and to arsenic absorbent high affinity, can adsorb arsenic on the colloid surface, and the colloid that has adsorbed a large amount of arsenic afterwards forms the deposit, subsides under the action of gravity and gets into the sedimentation tank, can open the sedimentation tank when needs discharge and collect the sediment that contains arsenic, and the delivery port discharge on the waste water follow electrolysis trough after handling. Hydrogen peroxide is able to rapidly and completely oxidize ferrous iron to overcome FeEC requiring long runs (about one hour) to remove the responsibility for dissolved Arsenic for the inherent kinetic limitations, if at high CoR, the imbalance between ferrous ion and oxygen dissolution rates may lead to incomplete oxidation of ferrous ion and formation of iron hydroxide, green rust, which may be less effective in removing Arsenic Fe (III) precipitate.
3. The industrial wastewater containing arsenic enters an electrolytic bath, a solar cell panel provides energy in the electrolytic bath, iron is used as an anode to oxidize iron into ferrous ions, a low-carbon steel plate is used as a cathode to reduce water into hydrogen, an aerator quickly dissolves a large amount of oxygen in water, an air diffusion cathode and ultrasonic wave are cooperated to quickly generate hydrogen peroxide through the cathode, the ferrous ions are immediately and completely oxidized into ferric ions, the ferric ions enter the industrial wastewater containing arsenic through a diffusion channel, and form ferric hydroxide colloid with anions carried by sewage.
4. The method for effectively removing arsenic in industrial wastewater by using the ferroelectric coagulation arsenic precipitation method has the advantages of low energy consumption, utilization of solar energy as a resource to provide electric energy, abundant and wide applied materials and low cost, is a flocculant-free bottom precipitation method, and can effectively remove arsenic in wastewater at low cost. By treating the industrial wastewater with arsenic, the water pollution condition is relieved, the economic loss caused by water pollution is reduced, and the method has a wide development prospect.
5. The solar cell panel and the solar storage battery are used for continuously providing energy, the iron rod is used as an electrolytic anode (wide in source and low in cost), and the electrolytic anode and the electrolytic cathode form a whole to form a hydrogen peroxide generator, so that hydrogen peroxide is continuously, efficiently and quickly generated; an air diffusion cathode, specifically a porous carbon cloth, a hydrophobic gas diffusion layer is arranged on the air phase side, and the graphene oxide loaded non-metal black red phosphorus is contained as a catalyst layer to more effectively and rapidly generate hydrogen peroxide completely under the synergistic action of ultrasonic waves; ultrasonic waves are also added into the electrolytic bath, which can promote the full stratification of sewage pollutants, thus being beneficial to the oxidation of water and the flocculation of the next precipitation.
Drawings
FIG. 1 is a schematic view of an apparatus for treating arsenic-containing waste water;
FIG. 2 is a rear view of an arsenic-containing wastewater treatment plant;
FIG. 3 is a schematic view of an electrolytic cathode;
FIG. 4 is a right side view of the electrolytic cathode;
wherein, 1, an electrolytic cell; 2. a water outlet; 3. electrifying the arm; 4. an electrolytic anode; 5. an air diffusion cathode; 6. an electrolytic cathode; 7. a diffusion channel; 8. a water inlet; 9. an insulating base; 10. a sedimentation tank; 11. an ultrasonic probe; 12. a solar battery.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
In one embodiment of the present invention, as shown in fig. 1-4, an arsenic-containing wastewater treatment apparatus is provided, which includes an electrolytic cell 1, an electrolysis apparatus is disposed in the middle of the electrolytic cell 1, an insulating base 9 is disposed between the electrolysis apparatus and the electrolytic cell 1, the electrolysis apparatus includes an electrolysis cathode 6 (low carbon steel plate), two cylindrical electrolysis anodes 4 (iron rods) are disposed inside the electrolysis cathode 6, the electrolysis cathode 6 is not in direct contact with the electrolysis anode 4, an air phase is disposed between the electrolysis cathode 6 and the electrolysis anode 4, an air diffusion cathode 5 (porous carbon cloth, a hydrophobic gas diffusion layer and a catalyst layer are disposed on one side of the electrolysis cathode 6 close to the electrolysis anode 4, the catalyst layer is non-metallic black phosphorus containing graphene oxide load, a plurality of diffusion channels 7 are disposed on two sides of the electrolysis cathode 6, and the other ends of the diffusion channels 7 are communicated with the electrolytic cell 1, the electrolysis anode 4 is connected with a solar storage battery 12 through a power-on arm 3, the solar storage battery 12 is connected with a solar cell panel, ultrasonic probes 11 are arranged between an electrolysis cathode 6 and the electrolysis anode 4 and in the electrolysis bath 1, the ultrasonic probes 11 are connected with an ultrasonic device, a water inlet 8 and a water outlet 2 are respectively arranged on two sides of the electrolysis bath 1, a sedimentation tank 10 is arranged at the bottom of the electrolysis bath 1, and an aerator is also arranged in the electrolysis bath 1.
When arsenic-containing wastewater is treated, a large amount of arsenic-containing wastewater enters an electrolytic tank 1 from a water inlet 8, the water level is kept at the same height in the electrolytic working process, a solar storage battery 12 supplies power to an electrolytic anode 4 through a power-on arm 3, the electrolytic anode 4 made of an iron rod loses electrons to become ferrous ions, a low-carbon steel plate is used as an electrolytic cathode 6 and can reduce water to generate hydrogen, an aerator enables a large amount of oxygen in the air to be rapidly dissolved in the water, then an air diffusion cathode 5 and ultrasonic waves emitted by an ultrasonic probe 11 are cooperated, the electrolytic cathode 6 reduces the oxygen dissolved in the water from the air to generate a large amount of hydrogen peroxide, the generated hydrogen peroxide rapidly oxidizes the ferrous ions to ferric ions, the ferric ions generated in the electrolytic cathode 6 enter the electrolytic tank 1 through a diffusion channel 7, and the ferric ions and the hydroxyl ions in the arsenic-containing wastewater in the electrolytic tank 1 are combined to form a ferric hydroxide colloid with stronger in adsorbability The ferric hydroxide colloid has a high specificity surface and high affinity for arsenic adsorption, arsenic can be adsorbed on the colloid surface, the colloid which adsorbs a large amount of arsenic subsequently forms a precipitate, the precipitate enters the sedimentation tank 10 under the action of gravity, the sedimentation tank 10 can be opened to collect the precipitate containing arsenic when the arsenic is required to be discharged, and the treated wastewater is discharged from the water outlet 2 on the electrolytic tank 1.
The solar cell panel and the solar storage battery 12 are used for continuously providing energy, the iron rod is used as the electrolysis anode 4 (wide source and low cost), and the electrolysis anode 4 and the electrolysis cathode 6 form an integral hydrogen peroxide generator to continuously, efficiently and rapidly generate hydrogen peroxide; an air diffusion cathode 5, specifically a porous carbon cloth, is utilized, a hydrophobic gas diffusion layer is arranged on the air phase side, and the graphene oxide loaded non-metal black red phosphorus is contained as a catalyst layer to more effectively and rapidly and completely generate hydrogen peroxide under the synergistic effect of ultrasonic waves; ultrasonic waves are also added into the electrolytic tank 1, which can promote the full stratification of sewage pollutants, and is beneficial to the oxidation of water and the flocculation of the next precipitation.
While the present invention has been described in detail with reference to the illustrated embodiments, it should not be construed as limited to the scope of the present patent. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (5)
1. The arsenic-containing wastewater treatment device is characterized by comprising an electrolytic cell (1), wherein an electrolytic device is arranged in the middle of the electrolytic cell (1), an insulating base (9) is arranged between the electrolytic device and the electrolytic cell (1), the electrolytic device comprises an electrolytic cathode (6), two cylindrical electrolytic anodes (4) are arranged in the electrolytic cathode (6), the electrolytic cathode (6) is not in direct contact with the electrolytic anodes (4), an air phase is arranged between the electrolytic cathode (6) and the electrolytic anodes (4), an air diffusion cathode (5) is arranged on one side, close to the electrolytic anodes (4), of the electrolytic cathode (6), a plurality of diffusion channels (7) are arranged on two sides of the electrolytic cathode (6), the other ends of the diffusion channels (7) are communicated with the electrolytic cell (1), and the electrolytic anodes (4) are connected with a solar storage battery (12) through electrifying arms (3), ultrasonic probes (11) are arranged between the electrolytic cathode (6) and the electrolytic anode (4) and in the electrolytic tank (1), the ultrasonic probes (11) are connected with an ultrasonic device, a water inlet (8) and a water outlet (2) are respectively arranged on two sides of the electrolytic tank (1), a sedimentation tank (10) is arranged at the bottom of the electrolytic tank (1), and an aerator is also arranged in the electrolytic tank (1).
2. The arsenic wastewater treatment apparatus as claimed in claim 1, wherein the electrolytic anode (4) is an iron rod.
3. The arsenic-containing wastewater treatment apparatus according to claim 1, wherein the electrolytic cathode (6) is a low carbon steel plate.
4. The arsenic-containing wastewater treatment device according to claim 1, wherein the air diffusion cathode (5) is a porous carbon cloth, and a hydrophobic gas diffusion layer and a catalyst layer are arranged on one side of the air phase of the porous carbon cloth.
5. The arsenic wastewater treatment plant according to claim 1, wherein the solar battery (12) is connected to a solar panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121170510.5U CN215480277U (en) | 2021-05-27 | 2021-05-27 | Arsenic-containing wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121170510.5U CN215480277U (en) | 2021-05-27 | 2021-05-27 | Arsenic-containing wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215480277U true CN215480277U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121170510.5U Expired - Fee Related CN215480277U (en) | 2021-05-27 | 2021-05-27 | Arsenic-containing wastewater treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215480277U (en) |
-
2021
- 2021-05-27 CN CN202121170510.5U patent/CN215480277U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |