CN212050663U - Electrocatalytic oxidative degradation chlorine-containing organic wastewater treatment device - Google Patents
Electrocatalytic oxidative degradation chlorine-containing organic wastewater treatment device Download PDFInfo
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- CN212050663U CN212050663U CN202020355472.XU CN202020355472U CN212050663U CN 212050663 U CN212050663 U CN 212050663U CN 202020355472 U CN202020355472 U CN 202020355472U CN 212050663 U CN212050663 U CN 212050663U
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Abstract
The utility model provides a device for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation, which comprises an electrolysis system, an ozone aeration system, a catalytic oxidation system and a waste gas collection system; the electrolysis system is inserted into an oxidation tank body in the catalytic oxidation system through an electrode; the ozone aeration system is arranged inside an oxidation tank body in the catalytic oxidation system, and the waste gas collection system is connected through a waste gas conduit arranged at the upper end of the catalytic oxidation system. The COD which is difficult to degrade in the system is ingeniously effectively treated by catalytic oxidation and electrolysis, and the generated waste gas is utilized to prepare the washing liquid containing hypochlorite, so that the COD which is difficult to degrade in the system is further eradicated, the aim of treating waste by waste is fulfilled, and the resource utilization of the waste water is realized.
Description
Technical Field
The utility model belongs to the technical field of effluent treatment plant, concretely relates to electro-catalytic oxidative degradation chlorine-containing organic wastewater treatment device.
Background
A large amount of tin stripping waste liquid is generated in the manufacturing process of the printed circuit board. The method contains a large amount of nitric acid, hydrochloric acid, tin, heavy metal ions such as copper and iron and a plurality of organic additives, the concentration of organic matters is extremely high, after the original acid is treated, the residual wastewater still contains high-concentration COD and chloride ions, the common treatment method has extremely high treatment cost and poor treatment effect, and the electrocatalytic oxidation is just the treatment method for the organic wastewater with impurities.
After a common electrocatalytic oxidation equipment catalyst is mixed with organic wastewater, a mixture after treatment needs to be beaten out, the catalyst is externally regenerated after being separated from the wastewater, a large amount of manpower and material resources are consumed in the process, and meanwhile, the catalyst is easy to lose in a frequent transfer process, so that the cost of the electrocatalytic oxidation process is increased. Meanwhile, a large amount of chlorine gas is generated in the electrolysis process, and if the chlorine gas is not properly treated, the waste gas pollution is caused.
Disclosure of Invention
The utility model provides an but the electrocatalytic oxidation treatment device of normal position regenerated catalyst to prior art's not enough of this application. After the waste liquid is subjected to electrocatalytic oxidation, the COD which is difficult to degrade is reasonably treated, gas generated in the treatment process is collected and treated in a centralized manner, and meanwhile, the catalyst is regenerated by utilizing the waste gas treatment liquid, so that the effect of treating waste by waste is achieved.
The technical scheme of the invention is as follows:
an electrocatalytic oxidation degradation chlorine-containing organic wastewater treatment device comprises an electrolysis system, an ozone aeration system, a catalytic oxidation system and a waste gas collection system; the electrolysis system is inserted into an oxidation tank body in the catalytic oxidation system through an electrode; the ozone aeration system is arranged inside an oxidation tank body in the catalytic oxidation system; the top of the catalytic oxidation system is connected with the waste gas collecting system through a waste gas guide pipe;
the structure of the catalytic oxidation system is as follows: the device comprises an oxidation tank body, wherein a feed inlet is formed in one side of the oxidation tank body, a waste gas guide pipe is arranged at the top of the oxidation tank body, a catalyst sieve plate is arranged at the bottom end inside the oxidation tank body, and a catalyst is arranged on the upper surface of the catalyst sieve plate; a discharge hole is formed in the bottom end of the oxidation tank body;
the structure of the ozone aeration system is as follows: the device comprises an aeration head, an aeration conduit and an ozone generator, wherein the aeration head is inserted into the catalyst sieve plate and is contacted with the catalyst;
the structure of the electrolysis system is as follows: the device comprises an electrode and a direct current power supply connected with the electrode, wherein the electrode is inserted into an oxidation tank body of the catalytic oxidation system;
the structure of the waste gas collecting system is as follows: the device comprises an axial flow fan and an exhaust gas washing tower which are sequentially connected through an exhaust gas guide pipe, wherein the exhaust gas washing tower is communicated with the side wall of the oxidation tank body through a flushing fluid inlet.
The waste gas guide pipe is used for collecting waste gas at two ends of the electrode, the collected waste gas comprises at least one of chlorine, hydrogen, oxygen or ozone, and the collection amount is greater than the ozone aeration amount.
The catalyst is a heavy metal load type particle catalyst, the aperture of the catalyst is 1500-4000 mu m, and the leaching rate of the heavy metal solution of the catalyst is lower than 0.1 percent.
The chlorine-containing electrocatalytic oxidation degradation organic wastewater treatment device is characterized in that a carrier in the heavy metal loaded particle catalyst comprises at least one of activated carbon, resin, a molecular sieve or a chelating agent.
The washing liquid of the waste gas washing tower is at least one of sodium hydroxide, potassium hydroxide or calcium hydroxide, the concentration of the washing liquid is 1% -5%, the structure is an absorption tower structure, and chlorine-containing waste gas is discharged from an outlet of a washing system through washing and purification.
The washing liquid at the washing liquid inlet is a circulating absorption liquid in the gas collection washing system, the component of the washing liquid is mainly hypochlorite, and the concentration of the hypochlorite is about 1% -5%.
The catalytic oxidation system is internally provided with a positive electrode plate and a negative electrode plate, the voltage between the electrode plates is 24V, the distance between the electrode plates is 10-30mm, the thickness of a single electrode plate is 0.8-3mm, the base layer of the electrode plate is titanium alloy, and the anode surface coating is iridium-ruthenium alloy and has the thickness of 5-15 mu m.
The aperture of the aeration head is less than or equal to 1mm, and the air-water ratio is 1: 5.
the bottom of the oxidation tank body is of an inverted cone structure.
The electrode is inserted below the liquid level of the waste liquid in the using process.
The beneficial technical effects of the invention are as follows:
(1) the utility model provides an electrocatalytic oxidation device can realize the autosegregation of catalyst and solution and realize the normal position regeneration of catalyst, need not additionally mix the liquid separation with catalyst and waste water and handle the catalyst is external.
(2) This use novel electrocatalytic oxidation device that provides can collect and handle the waste gas when chlorine-containing waste water carries out the electrolysis, avoids the waste gas pollution that brings among the electrolysis process, simultaneously, utilizes the exhaust-gas treatment liquid to regenerate the catalyst, reaches the effect of treating waste with useless.
(3) The utility model provides an electrocatalytic oxidation device has realized the degradation of difficult degradation COD, but makes the biochemical treatment of the direct biochemical waste water of can not have better economic value and environmental protection value after handling.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an electrolysis system; 11. a direct current power supply; 12. an electrode; 2. an ozone aeration system; 21. an aeration head; 22. an aeration conduit; 23. an ozone generator; 3. a catalytic oxidation system; 31. a feed inlet; 32. an oxidation tank body; 33. an exhaust gas conduit; 34. a catalyst sieve plate; 35. a discharge port; 36. a catalyst; 4. an exhaust gas collection system; 41. a waste gas scrubber; 42. a flushing fluid inlet; 43. an axial flow fan.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Examples
As shown in FIG. 1, the device for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation of the embodiment comprises an electrolysis system 1, an ozone aeration system 2, a catalytic oxidation system 3 and a waste gas collection system 4; the electrolysis system 1 is inserted into an oxidation tank body 32 in the catalytic oxidation system 3 through the electrode 12; the ozone aeration system 2 is arranged inside an oxidation tank body 32 in the catalytic oxidation system 3; the top of the catalytic oxidation system 3 is connected with an exhaust gas collecting system 4 through an exhaust gas conduit 33; the structure of the catalytic oxidation system 3 is as follows: the device comprises an oxidation tank body 32, wherein a feed inlet 31 is formed in one side of the oxidation tank body 32, a waste gas guide pipe 33 is arranged at the top of the oxidation tank body 32, a catalyst sieve plate 34 is arranged at the bottom end inside the oxidation tank body 32, and a catalyst 36 is arranged on the upper surface of the catalyst sieve plate 34; the bottom end of the oxidation tank body 32 is provided with a discharge hole 35; the structure of the ozone aeration system 2 is as follows: comprises an aeration head 21, an aeration conduit 22 and an ozone generator 23, wherein the aeration head 21 is inserted into a catalyst sieve plate 34 and is contacted with a catalyst 36; the structure of the electrolysis system 1 is: comprises an electrode 12 and a direct current power supply 11 connected with the electrode 12, wherein the electrode 12 is inserted into an oxidation tank body 32 of the catalytic oxidation system 3; the exhaust gas collection system 4 has a structure in which: an axial flow fan 43 and an exhaust gas washing tower 41 which are connected in sequence through an exhaust gas conduit 33, wherein the exhaust gas washing tower 41 is communicated with the side wall of the oxidation tank body 32 through a flushing liquid inlet 42. And the waste gas guide pipe 33 is responsible for collecting waste gas at two ends of the electrode, the collected waste gas comprises at least one of chlorine, hydrogen, oxygen or ozone, and the collecting gas amount is greater than the ozone aeration amount. The catalyst 36 is a heavy metal load type particle catalyst, the aperture of the catalyst is 1500-4000 mu m, and the leaching rate of the heavy metal solution of the catalyst is lower than 0.1 percent. The carrier in the heavy metal load type particle catalyst comprises at least one of activated carbon, resin, molecular sieve or chelating agent. The washing liquid of the waste gas washing tower 41 is at least one of sodium hydroxide, potassium hydroxide or calcium hydroxide, the concentration of the washing liquid is 1% -5%, the structure is an absorption tower structure, and chlorine-containing waste gas is discharged from the outlet of the washing system through washing and purification.
The washing liquid at the washing liquid inlet 42 is a circulating absorption liquid in the gas collection washing system, mainly contains hypochlorite with the concentration of about 1-5%, and can effectively treat incompletely decomposed organic matters on the surface of the catalyst.
The catalytic oxidation system 3 is internally provided with a positive electrode plate and a negative electrode plate, the voltage between the plates of the electrode plates is 24V, the distance between the plates is 10-30mm, the thickness of a single electrode plate is 0.8-3mm, the base layer of the electrode plate is titanium alloy, and the anode surface coating is iridium ruthenium alloy and has the thickness of 5-15 mu m.
The aperture of the aeration head 21 is less than or equal to 1mm, and the air-water ratio is 1: 5.
the bottom of the oxidation tank body 32 is conical.
The electrode 12 is inserted below the level of the waste liquid during use.
Example 1
As shown in FIG. 1, the device for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation of the embodiment comprises an electrolysis system 1, an ozone aeration system 2, a catalytic oxidation system 3 and a waste gas collection system 4; the electrolysis system 1 is inserted into an oxidation tank body 32 in the catalytic oxidation system 3 through the electrode 12; the ozone aeration system 2 is arranged inside an oxidation tank body 32 in the catalytic oxidation system 3; the top of the catalytic oxidation system 3 is connected with an exhaust gas collecting system 4 through an exhaust gas conduit 33; the structure of the catalytic oxidation system 3 is as follows: the device comprises an oxidation tank body 32, wherein a feed inlet 31 is formed in one side of the oxidation tank body 32, a waste gas guide pipe 33 is arranged at the top of the oxidation tank body 32, a catalyst sieve plate 34 is arranged at the bottom end inside the oxidation tank body 32, and a catalyst 36 is arranged on the upper surface of the catalyst sieve plate 34; the bottom end of the oxidation tank body 32 is provided with a discharge hole 35; the structure of the ozone aeration system 2 is as follows: comprises an aeration head 21, an aeration conduit 22 and an ozone generator 23, wherein the aeration head 21 is inserted into a catalyst sieve plate 34 and is contacted with a catalyst 36; the structure of the electrolysis system 1 is: comprises an electrode 12 and a direct current power supply 11 connected with the electrode 12, wherein the electrode 12 is inserted into an oxidation tank body 32 of the catalytic oxidation system 3; the exhaust gas collection system 4 has a structure in which: an axial flow fan 43 and an exhaust gas washing tower 41 which are connected in sequence through an exhaust gas conduit 33, wherein the exhaust gas washing tower 41 is communicated with the side wall of the oxidation tank body 32 through a flushing liquid inlet 42. And the waste gas guide pipe 33 is responsible for collecting waste gas at two ends of the electrode, the collected waste gas comprises chlorine and ozone, and the collected gas amount is greater than the ozone aeration amount. The catalyst 36 is a heavy metal load type particle catalyst, the aperture of the catalyst is 1500 mu m, and the leaching rate of the heavy metal solution of the catalyst is lower than 0.05 percent. The carrier in the heavy metal load type particle catalyst is active carbon and resin. The washing liquid of the waste gas washing tower 41 is sodium hydroxide with the concentration of 1%, the structure is an absorption tower structure, and chlorine-containing waste gas is discharged from the outlet of the washing system through washing purification. The washing liquid at the washing liquid inlet 42 is a circulating absorption liquid in the gas collection washing system, the component of the washing liquid is mainly hypochlorite, the concentration of the hypochlorite is about 1 percent, and the incompletely decomposed organic matters on the surface of the catalyst can be effectively treated. The catalytic oxidation system 3 is internally provided with a positive electrode plate and a negative electrode plate, the voltage between the plates of the electrode plates is 24V, the distance between the plates is 10mm, the thickness of a single electrode plate is 0.8mm, the base layer of the electrode plate is made of titanium alloy, and the surface coating of the anode is made of iridium ruthenium alloy and has the thickness of 5 mu m. The aperture of the aeration head 21 is equal to 1mm, and the air-water ratio is 1: 5.
the bottom of the oxidation tank body 32 is conical.
The electrode 12 is inserted below the level of the waste liquid during use.
Example 2
As shown in FIG. 1, the device for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation of the embodiment comprises an electrolysis system 1, an ozone aeration system 2, a catalytic oxidation system 3 and a waste gas collection system 4; the electrolysis system 1 is inserted into an oxidation tank body 32 in the catalytic oxidation system 3 through the electrode 12; the ozone aeration system 2 is arranged inside an oxidation tank body 32 in the catalytic oxidation system 3; the top of the catalytic oxidation system 3 is connected with an exhaust gas collecting system 4 through an exhaust gas conduit 33; the structure of the catalytic oxidation system 3 is as follows: the device comprises an oxidation tank body 32, wherein a feed inlet 31 is formed in one side of the oxidation tank body 32, a waste gas guide pipe 33 is arranged at the top of the oxidation tank body 32, a catalyst sieve plate 34 is arranged at the bottom end inside the oxidation tank body 32, and a catalyst 36 is arranged on the upper surface of the catalyst sieve plate 34; the bottom end of the oxidation tank body 32 is provided with a discharge hole 35; the structure of the ozone aeration system 2 is as follows: comprises an aeration head 21, an aeration conduit 22 and an ozone generator 23, wherein the aeration head 21 is inserted into a catalyst sieve plate 34 and is contacted with a catalyst 36; the structure of the electrolysis system 1 is: comprises an electrode 12 and a direct current power supply 11 connected with the electrode 12, wherein the electrode 12 is inserted into an oxidation tank body 32 of the catalytic oxidation system 3; the exhaust gas collection system 4 has a structure in which: an axial flow fan 43 and an exhaust gas washing tower 41 which are connected in sequence through an exhaust gas conduit 33, wherein the exhaust gas washing tower 41 is communicated with the side wall of the oxidation tank body 32 through a flushing liquid inlet 42. And the waste gas guide pipe 33 is responsible for collecting waste gas at two ends of the electrode, the collected waste gas comprises chlorine, oxygen or ozone, and the collecting gas amount is greater than the ozone aeration amount. The catalyst 36 is a heavy metal supported particle catalyst, the aperture of the catalyst is 4000 micrometers, and the leaching rate of the heavy metal solution of the catalyst is lower than 0.05%. The carrier in the heavy metal load type particle catalyst is a molecular sieve. The washing liquid of the waste gas washing tower 41 is potassium hydroxide with the concentration of 5 percent, the structure is an absorption tower structure, and chlorine-containing waste gas is discharged from the outlet of the washing system through washing purification. The washing liquid at the washing liquid inlet 42 is a circulating absorption liquid in the gas collection washing system, the component of the washing liquid is mainly hypochlorite, the concentration of the hypochlorite is about 5 percent, and the incompletely decomposed organic matters on the surface of the catalyst can be effectively treated.
The catalytic oxidation system 3 is internally provided with a positive electrode plate and a negative electrode plate, the voltage between the plates of the electrode plates is 24V, the distance between the plates is 30mm, the thickness of a single electrode plate is 3mm, the base layer of the electrode plate is made of titanium alloy, and the surface coating of the anode is made of iridium ruthenium alloy and has the thickness of 15 mu m.
The aperture of the aeration head 21 is equal to 0.05mm, and the air-water ratio is 1: 5.
the bottom of the oxidation tank body 32 is conical.
The electrode 12 is inserted below the level of the waste liquid during use.
The utility model discloses a theory of operation:
waste water to be treated is pumped into the oxidation tank 32 through the feed inlet 31 and is mixed and contacted with the catalyst 36 on the catalyst sieve 34. After the electrolysis is started, the electrolysis system 1 is started, the ozone aeration system 2 and the waste gas conduit 33 are simultaneously started, and the organic wastewater is jointly treated under the synergy of ozone aeration and catalytic electrolysis. Meanwhile, the waste gas collecting system 4 generates flushing liquid through the treatment of the electrolytic waste gas, the flushing liquid is stored in the waste gas washing tower 41, hypochlorite exists in the generated waste gas washing, the incompletely decomposed organic matters on the surface of the catalyst can be effectively treated, the purpose of fully degrading COD is achieved, and the effect of treating waste with waste is achieved. After the electrolysis treatment, the treated wastewater is discharged from the discharge port 35, thereby realizing the separation of the treated water and the catalyst. After the catalyst is separated, the treatment liquid of the alkali liquor absorption system is pumped into the oxidation tank body 32 from the washing liquid inlet 42 to regenerate and leach the catalyst 36, and the washing liquid is separated through the discharge hole and then treated.
Claims (10)
1. An electrocatalytic oxidation degradation chlorine-containing organic wastewater treatment device is characterized by comprising an electrolysis system (1), an ozone aeration system (2), a catalytic oxidation system (3) and a waste gas collection system (4); the electrolysis system (1) is inserted into an oxidation tank body (32) in the catalytic oxidation system (3) through an electrode (12); the ozone aeration system (2) is arranged inside an oxidation tank body (32) in the catalytic oxidation system (3); the top of the catalytic oxidation system (3) is connected with the waste gas collecting system (4) through a waste gas guide pipe (33);
the structure of the catalytic oxidation system (3) is as follows: the device comprises an oxidation tank body (32), wherein a feed inlet (31) is formed in one side of the oxidation tank body (32), a waste gas guide pipe (33) is arranged at the top of the oxidation tank body (32), a catalyst sieve plate (34) is arranged at the bottom end inside the oxidation tank body (32), and a catalyst (36) is arranged on the upper surface of the catalyst sieve plate (34); a discharge hole (35) is formed in the bottom end of the oxidation tank body (32);
the structure of the ozone aeration system (2) is as follows: the device comprises an aeration head (21), an aeration conduit (22) and an ozone generator (23), wherein the aeration head (21) is inserted into the catalyst sieve plate (34) and is contacted with a catalyst (36);
the structure of the electrolysis system (1) is as follows: the device comprises an electrode (12) and a direct current power supply (11) connected with the electrode (12), wherein the electrode (12) is inserted into an oxidation tank body (32) of the catalytic oxidation system (3);
the structure of the waste gas collecting system (4) is as follows: the device comprises an axial flow fan (43) and an exhaust gas washing tower (41) which are sequentially connected through an exhaust gas guide pipe (33), wherein the exhaust gas washing tower (41) is communicated with the side wall of an oxidation tank body (32) through a flushing liquid inlet (42).
2. An apparatus for treating organic waste water containing chlorine by electrocatalytic oxidation degradation according to claim 1, wherein the waste gas conduit (33) is responsible for collecting waste gas at both ends of the electrode, the collected waste gas comprises at least one of chlorine, hydrogen, oxygen or ozone, and the collected gas amount is larger than the ozone aeration amount.
3. The device for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation as recited in claim 1, wherein the catalyst (36) is a heavy metal-loaded particle catalyst, the pore diameter of the catalyst is 1500-.
4. The apparatus for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation according to claim 3, wherein the carrier in the heavy metal supported particle catalyst comprises at least one of activated carbon, resin, molecular sieve or chelating agent.
5. The apparatus for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation according to claim 1, wherein the scrubbing liquid of the waste gas scrubbing tower (41) is at least one of sodium hydroxide, potassium hydroxide or calcium hydroxide, the concentration of the scrubbing liquid is 1% -5%, the structure is an absorption tower structure, and chlorine-containing waste gas is discharged from the outlet of the scrubbing system through scrubbing purification.
6. The device for treating the chlorine-containing organic wastewater by electrocatalytic oxidation degradation as set forth in claim 1, wherein the rinse solution at the rinse solution inlet (42) is a circulating absorption solution in the gas-collecting washing system, and the composition of the rinse solution is mainly hypochlorite, and the concentration of the hypochlorite is 1% -5%.
7. The device for treating the chlorine-containing organic wastewater by electrocatalytic oxidation degradation according to claim 1, wherein a positive electrode plate and a negative electrode plate are arranged in the catalytic oxidation system (3), the voltage between the plates is 24V, the distance between the plates is 10-30mm, the thickness of the single electrode plate is 0.8-3mm, the base layer of the electrode plate is titanium alloy, and the anode surface coating is iridium ruthenium alloy and has a thickness of 5-15 μm.
8. The apparatus for treating chlorine-containing organic wastewater by electrocatalytic oxidation degradation according to claim 1, wherein the aperture of the aeration head (21) is 1mm or less, and the aeration rate is combined so that the gas-water ratio is 1: 5.
9. The device for treating the chlorine-containing organic wastewater by electrocatalytic oxidation degradation as set forth in claim 1, wherein the bottom of the oxidation tank body (32) is in an inverted cone structure.
10. An apparatus for treating organic waste water containing chlorine by electrocatalytic oxidation degradation according to claim 1, wherein said electrode (12) is inserted below the liquid level of the waste liquid during use.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367854A (en) * | 2022-08-30 | 2022-11-22 | 盐城工学院 | Method for treating chlorine-containing waste gas and recycling organic wastewater |
| WO2023020038A1 (en) * | 2021-08-20 | 2023-02-23 | 无锡中天固废处置有限公司 | Treatment process for chloride-and organic matter-containing wastewater |
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2020
- 2020-03-19 CN CN202020355472.XU patent/CN212050663U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023020038A1 (en) * | 2021-08-20 | 2023-02-23 | 无锡中天固废处置有限公司 | Treatment process for chloride-and organic matter-containing wastewater |
| CN115367854A (en) * | 2022-08-30 | 2022-11-22 | 盐城工学院 | Method for treating chlorine-containing waste gas and recycling organic wastewater |
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