CN211998953U - High-efficient electro-Fenton sewage treatment plant of column updraft - Google Patents
High-efficient electro-Fenton sewage treatment plant of column updraft Download PDFInfo
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- CN211998953U CN211998953U CN201922312922.7U CN201922312922U CN211998953U CN 211998953 U CN211998953 U CN 211998953U CN 201922312922 U CN201922312922 U CN 201922312922U CN 211998953 U CN211998953 U CN 211998953U
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Abstract
The utility model relates to a column upflow-flow Fenton sewage treatment device, which belongs to the technical field of wastewater treatment. The device comprises a micro-aeration gas distributor, an electrolysis chamber, a cathode gas-collecting hood, an anode gas-collecting hood, an oxygen reflux pipeline and an aeration pump; the micro-aeration gas distributor comprises an inner plate, aeration holes and an outer ring, wherein the aeration holes are positioned between the inner plate and the outer ring; the electrolytic chamber comprises a shell, a cathode, an anode, a water inlet pipe and a water outlet pipe; the cathode and the anode are both in a hollow cylinder shape, and the anode is positioned at the inner side of the cathode; the anode gas collecting cover is positioned right above the anode, and the oxygen backflow pipeline is connected with the anode gas collecting cover; the cathode gas-collecting hood is positioned right above the cathode; the aeration holes are positioned right below the cathode and used for conveying oxygen in the aeration gas distributor to the cathode under the action of the aeration pump. The utility model has the advantages of small occupied area, simple structure, convenient operation, no need of adding hydrogen peroxide, high automation degree, full utilization of materials, good sewage treatment effect and the like.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, more specifically relates to a high-efficient electro-Fenton sewage treatment plant of column upflow.
Background
The traditional Fenton process usually needs to continuously add hydrogen peroxide, the treatment cost is high, continuous reaction cannot be realized, and the added excessive hydrogen peroxide can react with generated hydroxyl radicals, so that the concentration of an oxidant is sharply reduced, waste is caused, and the treatment effect is influenced.
The electro-Fenton technique can continuously generate Fe in the electrolytic state2+And hydrogen peroxide, and a mixture of hydrogen peroxide,ensures the treatment effect and does not waste excessive oxidant. At the same time, part of the contaminants can also be degraded at the electrodes during operation of the device. The principle of the electro-Fenton technology is that firstly dissolved oxygen participates in the reduction reaction generated by cathode electrolysis to generate hydrogen peroxide, and the reaction equation is as follows:
O2+2H++2e-→H2O2
subsequent hydrogen peroxide with Fe in the system2+The combination generates Fenton reaction to generate OH to oxidize pollutants. The reaction equation is as follows:
H2O2+Fe2+→Fe3++·OH+OH-
at present, most electro-Fenton devices are in a single-stage intermittent mode, cannot continuously treat wastewater, are complex to operate and have limited treatment efficiency. Meanwhile, the problems that the anode electrolysis product is not efficiently utilized and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides an among the prior art electro-Fenton method effluent treatment plant need continuously add hydrogen peroxide, lead to the problem that treatment cost increases and can't continuous processing waste water. The utility model discloses an oxygen that positive pole produced when make full use of electrolysis, high-efficient hydrogen peroxide that produces at the negative pole, the fenton reaction that lasts self-supporting handles the pollutant in the waste water to the electro-catalysis degradation of pollutant takes place at the positive pole.
The utility model provides a columnar upflow electro-fenton sewage treatment device, which comprises a micro-aeration gas distributor, an electrolysis chamber, a cathode gas-collecting hood, an anode gas-collecting hood, an oxygen reflux pipeline and an aeration pump;
the micro-aeration gas distributor comprises an inner plate, aeration holes and an outer ring, wherein the aeration holes are positioned between the inner plate and the outer ring; the electrolytic chamber comprises a shell, a cathode, an anode, a water inlet pipe and a water outlet pipe; the cathode and the anode are both in a hollow cylinder shape, the anode is positioned on the inner side of the cathode, and the shell is positioned on the outer side of the cathode; the anode gas collecting hood is positioned right above the anode, the oxygen backflow pipeline is connected with the anode gas collecting hood, the anode is used for electrolyzing to generate oxygen, the anode gas collecting hood is used for collecting the oxygen, and the oxygen backflow pipeline is used for enabling the oxygen to flow back to the aeration gas distributor; the cathode gas-collecting hood is positioned right above the cathode and is used for collecting hydrogen generated by the cathode;
the aeration holes are positioned right below the cathode, the aeration holes are used for conveying oxygen in the aeration gas distributor to the cathode under the action of an aeration pump, and the inner plate and the outer ring around the aeration holes are used for preventing the oxygen from entering the area outside the cathode in the electrolytic chamber; the oxygen is used for generating hydrogen peroxide in a cathode reaction, and the hydrogen peroxide is used for performing a Fenton reaction with organic matters in the sewage in the electrolytic chamber;
the water inlet pipe is positioned at the lower part of the shell and is used for conveying sewage into the electrolytic chamber; the water outlet pipe is positioned at the upper part of the shell and used for discharging water body with Fenton reaction.
Preferably, a first water level sensor and a second water level sensor are arranged on the side wall of the cathode gas collecting hood, and the second water level sensor is arranged above the first water level sensor; the first water level sensor is used for monitoring the height of the water level so that the water level is not lower than the first water level sensor, and the second water level sensor is used for monitoring the height of the water level so that the water level is not higher than the second water level sensor.
Preferably, the automatic air exhaust device is connected with the oxygen return pipeline and is used for exhausting gas in the oxygen return pipeline when the water level in the electrolytic chamber exceeds the height of the second water level sensor.
Preferably, the electrolytic cell further comprises an air supplement pipe connected with the oxygen return pipe, and the air supplement pipe is used for supplementing air to the oxygen return pipe when the water level in the electrolytic cell is lower than the height of the first water level sensor.
Preferably, the included angle of the straight line projections of the water inlet pipe and the water outlet pipe on the same horizontal plane is more than or equal to 0 degree and less than or equal to 180 degrees.
Preferably, the included angle of the straight line projections of the water inlet pipe and the water outlet pipe on the same horizontal plane is 90 degrees or 180 degrees.
Preferably, the housing is hollow cylindrical.
Preferably, the cathode is a stainless steel mesh.
Preferably, the cathode is two layers of stainless steel mesh.
Preferably, the anode is two layers of titanium nets, and iron-loaded carbon particles are distributed between the two layers of titanium nets.
Generally, through the utility model above technical scheme who thinks compares with prior art, mainly possesses following technical advantage:
(1) the utility model has the advantages of small occupied area, simple structure, convenient operation, no need of adding hydrogen peroxide, high automation degree, full utilization of materials, good sewage treatment effect and the like.
(2) The utility model discloses a netted and graininess combination electrode possess great electrolysis area to obtain higher hydrogen peroxide production rate and sewage degradation rate.
(3) The utility model can supply hydrogen peroxide and Fe with high efficiency and self2+And the continuous automatic operation of the Fenton reaction is ensured.
(4) The utility model discloses the production oxygen recoverable utilizes in and generates hydrogen peroxide, can make full use of reaction product, saves the raw materials expenditure.
(5) The utility model discloses a water level inductor and automatic exhaust device's design makes the device in the water level height keep in the certain limit, has realized the automatic control of device, has avoided leading to the too high generating device trouble of water level because of gaseous accumulation, has reduced the manpower consumption that daily management brought simultaneously.
(6) The utility model discloses a water pipe position design and electrode structural design advance, go out for rivers can flow simultaneously in radial and two axial directions, have increased the flow distance of water in the device.
Drawings
Fig. 1 is a sectional view of the overall structure of the present invention.
FIG. 2 is a sectional view of the structure of the electrolytic cell of the present invention.
FIG. 3 is a structural view of the micro-aeration gas distributor of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: 1-micro aeration gas distributor, 2-electrolysis chamber, 3-cathode gas collecting hood, 4-anode gas collecting hood, 5-oxygen reflux pipeline, 6-aeration pump, 7-inner plate, 8-aeration hole, 9-outer ring, 10-shell, 11-cathode, 12-anode, 13-water inlet pipe, 14-water outlet pipe, 15-first water level sensor, 16-second water level sensor, 17-automatic exhaust device and 18-air supplement pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
Fig. 1 is a sectional view of the overall structure of the present invention. FIG. 2 is a sectional view of the structure of the electrolytic cell 2 of the present invention. FIG. 3 is a structural view of the micro-aeration gas distributor 1 of the present invention. The device comprises a micro-aeration gas distributor 1, an electrolysis chamber 2, a cathode gas-collecting hood 3, an anode gas-collecting hood 4, an oxygen reflux pipeline 5 and an aeration pump 6;
the micro-aeration gas distributor 1 comprises an inner plate 7, aeration holes 8 and an outer ring 9, wherein the aeration holes 8 are positioned between the inner plate 7 and the outer ring 9; the electrolytic chamber 2 comprises a shell 10, a cathode 11, an anode 12, a water inlet pipe 13 and a water outlet pipe 14; the cathode 11 and the anode 12 are both in a hollow cylindrical shape, the anode 12 is positioned at the inner side of the cathode 11, and the shell 10 is positioned at the outer side of the cathode 11; the anode gas collecting hood 4 is positioned right above the anode 12, the oxygen backflow pipeline 5 is connected with the anode gas collecting hood 4, the anode 12 is used for electrolyzing to generate oxygen, the anode gas collecting hood 4 is used for collecting the oxygen, and the oxygen backflow pipeline 5 is used for returning the oxygen to the aeration gas distributor 1; the cathode gas-collecting hood 3 is positioned right above the cathode 11, and the cathode gas-collecting hood 3 is used for collecting hydrogen generated by the cathode 11;
the aeration holes 8 are positioned right below the cathode 11, the aeration holes 8 are used for conveying oxygen in the aeration gas distributor 1 to the cathode 11 under the action of the aeration pump 6, and the inner plate 7 and the outer ring 9 around the aeration holes 8 are used for preventing the oxygen from entering the area of the electrolytic chamber 2 except the cathode 11; the oxygen is used for generating hydrogen peroxide in the cathode 11, and the hydrogen peroxide is used for generating Fenton reaction with organic matters in the sewage in the electrolytic chamber 2;
the water inlet pipe 13 is positioned at the lower part of the shell 10, and the water inlet pipe 13 is used for conveying sewage into the electrolytic chamber 2; the water outlet pipe 14 is located at the upper part of the housing 10, and the water outlet pipe 14 is used for discharging the water body in which the fenton reaction occurs.
Example 2
A columnar upflow electro-Fenton sewage treatment device comprises a micro-aeration gas distributor 1, an electrolysis chamber 2, a cathode gas-collecting hood 3, an anode gas-collecting hood 4, an oxygen reflux pipeline 5 and an aeration pump 6;
the micro-aeration gas distributor 1 comprises an inner plate 7, aeration holes 8 and an outer ring 9, wherein the aeration holes 8 are positioned between the inner plate 7 and the outer ring 9; the electrolytic chamber 2 comprises a shell 10, a cathode 11, an anode 12, a water inlet pipe 13 and a water outlet pipe 14; the cathode 11 and the anode 12 are both in a hollow cylindrical shape, the anode 12 is positioned at the inner side of the cathode 11, and the shell 10 is positioned at the outer side of the cathode 11; the anode gas collecting hood 4 is positioned right above the anode 12, the oxygen backflow pipeline 5 is connected with the anode gas collecting hood 4, the anode 12 is used for electrolyzing to generate oxygen, the anode gas collecting hood 4 is used for collecting the oxygen, and the oxygen backflow pipeline 5 is used for returning the oxygen to the aeration gas distributor 1; the cathode gas-collecting hood 3 is positioned right above the cathode 11, and the cathode gas-collecting hood 3 is used for collecting hydrogen generated by the cathode 11;
the aeration holes 8 are positioned right below the cathode 11, the aeration holes 8 are used for conveying oxygen in the aeration gas distributor 1 to the cathode 11 under the action of the aeration pump 6, and the inner plate 7 and the outer ring 9 around the aeration holes 8 are used for preventing the oxygen from entering the area of the electrolytic chamber 2 except the cathode 11; the oxygen is used for generating hydrogen peroxide in the cathode 11, and the hydrogen peroxide is used for generating Fenton reaction with organic matters in the sewage in the electrolytic chamber 2;
the water inlet pipe 13 is positioned at the lower part of the shell 10, and the water inlet pipe 13 is used for conveying sewage into the electrolytic chamber 2; the water outlet pipe 14 is located at the upper part of the housing 10, and the water outlet pipe 14 is used for discharging the water body in which the fenton reaction occurs.
A first water level sensor 15 and a second water level sensor 16 are arranged on the side wall of the cathode gas-collecting hood 3, and the second water level sensor 16 is arranged above the first water level sensor 15; the first water level sensor 15 is used for monitoring the level of the water so that the water level is not lower than the first water level sensor 15, and the second water level sensor 16 is used for monitoring the level of the water so that the water level is not higher than the second water level sensor 16.
And an automatic exhaust device 17, wherein the automatic exhaust device 17 is connected with the oxygen return pipe 5, and the automatic exhaust device 17 is used for exhausting gas in the oxygen return pipe 5 when the water level in the electrolytic chamber 2 exceeds the height of the second water level sensor 16.
An air supply pipe 18 is further included, the air supply pipe 18 being connected to the oxygen return pipe 5, the air supply pipe 18 being used to supply air to the oxygen return pipe 5 when the water level in the electrolytic cell 2 is lower than the height of the first water level sensor 15.
The included angle of the straight line projections of the water inlet pipe 13 and the water outlet pipe 14 on the same horizontal plane is more than or equal to 0 degree and less than or equal to 180 degrees.
Preferably, the included angle between the straight line projections of the water inlet pipe 13 and the water outlet pipe 14) on the same horizontal plane is 90 degrees or 180 degrees.
The housing 10 is hollow cylindrical.
The cathode 11 is a stainless steel mesh.
Preferably, the cathode 11 is a two-layer stainless steel mesh.
The anode 12 is two layers of titanium nets, and iron-loaded carbon particles are distributed between the two layers of titanium nets.
Example 3
In a specific application process, the aeration pump 6 is firstly turned on to generate updraft to prevent inflow water from flowing into the oxygen return pipeline 5, and then sewage is injected through the water inlet pipe 13. The structure of the device is intact after the sewage is observed to stably flow out of the water outlet pipe 14. After the above operation is completed, the air replenishment pipe 18 is opened and maintained for a while, and the cathode 11 is initially aerated. After the aeration is finished, the air replenishing pipe 18 is closed, and the power supply is turned on to start electrolysis. And simultaneously, the power of the first water level sensor 15, the second water level sensor 16 and the automatic exhaust device 17 is turned on to be brought into an operating state. After a period of time, the conditions of gas generation and gas collection, gas reflux and water flow are observed, and if the conditions are stable, the device operates normally. The effluent quality should be periodically tested to evaluate the operating conditions of the device.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A columnar upflow high-efficiency electro-Fenton sewage treatment device is characterized by comprising a micro-aeration gas distributor (1), an electrolysis chamber (2), a cathode gas-collecting hood (3), an anode gas-collecting hood (4), an oxygen reflux pipeline (5) and an aeration pump (6);
the micro-aeration gas distributor (1) comprises an inner plate (7), aeration holes (8) and an outer ring (9), wherein the aeration holes (8) are positioned between the inner plate (7) and the outer ring (9); the electrolytic chamber (2) comprises a shell (10), a cathode (11), an anode (12), a water inlet pipe (13) and a water outlet pipe (14); the cathode (11) and the anode (12) are both in a hollow cylindrical shape, the anode (12) is positioned on the inner side of the cathode (11), and the shell (10) is positioned on the outer side of the cathode (11); the anode gas collecting hood (4) is positioned right above an anode (12), the oxygen backflow pipeline (5) is connected with the anode gas collecting hood (4), the anode (12) is used for electrolyzing to generate oxygen, the anode gas collecting hood (4) is used for collecting the oxygen, and the oxygen backflow pipeline (5) is used for returning the oxygen to the aeration gas distributor (1); the cathode gas-collecting hood (3) is positioned right above the cathode (11), and the cathode gas-collecting hood (3) is used for collecting hydrogen generated by the cathode (11);
the aeration holes (8) are positioned right below the cathode (11), the aeration holes (8) are used for conveying oxygen in the aeration gas distributor (1) to the cathode (11) under the action of an aeration pump (6), and the inner plate (7) and the outer ring (9) around the aeration holes (8) are used for avoiding the oxygen from entering the area outside the cathode (11) in the electrolytic chamber (2); the oxygen is used for generating hydrogen peroxide in the cathode (11) through reaction, and the hydrogen peroxide is used for performing Fenton reaction with organic matters in the sewage in the electrolytic chamber (2);
the water inlet pipe (13) is positioned at the lower part of the shell (10), and the water inlet pipe (13) is used for conveying sewage into the electrolytic chamber (2); the water outlet pipe (14) is positioned at the upper part of the shell (10), and the water outlet pipe (14) is used for discharging water bodies subjected to Fenton reaction.
2. The columnar upflow high efficiency electro-Fenton sewage treatment plant as claimed in claim 1, wherein the side wall of the cathode gas-collecting hood (3) is provided with a first water level sensor (15) and a second water level sensor (16), and the second water level sensor (16) is arranged above the first water level sensor (15); the first water level sensor (15) is used for monitoring the height of the water level so that the water level is not lower than the first water level sensor (15), and the second water level sensor (16) is used for monitoring the height of the water level so that the water level is not higher than the second water level sensor (16).
3. The cylindrical upflow high efficiency electro-Fenton sewage treatment plant according to claim 2, further comprising an automatic gas exhaust device (17), wherein the automatic gas exhaust device (17) is connected to the oxygen return pipe (5), and the automatic gas exhaust device (17) is configured to exhaust a part of the gas in the oxygen return pipe (5) when the water level in the electrolysis chamber (2) exceeds the height of the second water level sensor (16).
4. The cylindrical upflow high efficiency electro-Fenton sewage treatment plant according to claim 2, further comprising an air supply pipe (18), wherein the air supply pipe (18) is connected to the oxygen return pipe (5), and wherein the air supply pipe (18) is adapted to supply air to the oxygen return pipe (5) when the water level in the electrolytic chamber (2) is lower than the height of the first water level sensor (15).
5. The columnar upflow high-efficiency electro-Fenton sewage treatment plant as claimed in claim 1, wherein the included angle between the straight line projections of the water inlet pipe (13) and the water outlet pipe (14) on the same horizontal plane is greater than or equal to 0 ° and less than or equal to 180 °.
6. The columnar upflow high efficiency electro-Fenton's wastewater treatment plant as claimed in claim 5, wherein the included angle of the straight line projection of the inlet pipe (13) and the outlet pipe (14) on the same horizontal plane is 90 ° or 180 °.
7. The cylindrical upward-flow high-efficiency electro-fenton sewage treatment plant according to claim 1, wherein the housing (10) is hollow cylindrical.
8. The cylindrical upward-flow high-efficiency electro-fenton sewage treatment plant according to claim 1, wherein the cathode (11) is a stainless steel mesh.
9. The cylindrical upward-flow high-efficiency electro-fenton sewage treatment plant according to claim 8, wherein the cathode (11) is two layers of stainless steel mesh.
10. The columnar upflow high efficiency electro-Fenton's wastewater treatment plant as claimed in claim 1, wherein said anode (12) is two layers of titanium mesh with iron loaded carbon particles distributed between them.
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| CN113666461A (en) * | 2021-08-23 | 2021-11-19 | 王麒钧 | Electrode device for preventing basket type filling electrode surface from being polluted and electrolysis method |
| CN113754027A (en) * | 2021-11-08 | 2021-12-07 | 中机国际工程设计研究院有限责任公司 | Sectional type three-dimensional electro-catalytic device for waste water |
| CN113896292A (en) * | 2021-11-08 | 2022-01-07 | 中机国际工程设计研究院有限责任公司 | Three-dimensional electro-catalytic device for waste water |
| CN113896295A (en) * | 2021-11-08 | 2022-01-07 | 中机国际工程设计研究院有限责任公司 | Horizontal baffling type electrocatalytic reaction device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113666461A (en) * | 2021-08-23 | 2021-11-19 | 王麒钧 | Electrode device for preventing basket type filling electrode surface from being polluted and electrolysis method |
| CN113754027A (en) * | 2021-11-08 | 2021-12-07 | 中机国际工程设计研究院有限责任公司 | Sectional type three-dimensional electro-catalytic device for waste water |
| CN113896292A (en) * | 2021-11-08 | 2022-01-07 | 中机国际工程设计研究院有限责任公司 | Three-dimensional electro-catalytic device for waste water |
| CN113896295A (en) * | 2021-11-08 | 2022-01-07 | 中机国际工程设计研究院有限责任公司 | Horizontal baffling type electrocatalytic reaction device |
| CN113896294A (en) * | 2021-11-08 | 2022-01-07 | 中机国际工程设计研究院有限责任公司 | Vertical baffling type electro-catalytic reaction device |
| CN113943082A (en) * | 2021-11-08 | 2022-01-18 | 中机国际工程设计研究院有限责任公司 | Kitchen waste wastewater treatment system |
| CN114133100A (en) * | 2021-11-08 | 2022-03-04 | 中机国际工程设计研究院有限责任公司 | Organic wastewater treatment system |
| CN114133101A (en) * | 2021-11-08 | 2022-03-04 | 中机国际工程设计研究院有限责任公司 | Kitchen garbage effluent disposal system |
| CN113896294B (en) * | 2021-11-08 | 2022-11-11 | 中机国际工程设计研究院有限责任公司 | Vertical baffling type electro-catalytic reaction device |
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