CN216273539U - Treatment device for alkaline residue wastewater desulfurization and combined oxidation - Google Patents
Treatment device for alkaline residue wastewater desulfurization and combined oxidation Download PDFInfo
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- CN216273539U CN216273539U CN202123074165.8U CN202123074165U CN216273539U CN 216273539 U CN216273539 U CN 216273539U CN 202123074165 U CN202123074165 U CN 202123074165U CN 216273539 U CN216273539 U CN 216273539U
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Abstract
A treatment device for alkaline residue wastewater desulfurization and combined oxidation comprises an ultramicro-bubble oxidation desulfurization unit, an electrolysis catalytic oxidation unit and an ozone catalytic oxidation unit which are sequentially arranged; the super-microbubble oxidation desulfurization unit comprises a feeding buffer tank, an oxidation reactor and a three-phase separator which are connected in sequence; the electrolytic catalytic oxidation unit comprises a delivery pump, an electrolytic catalytic oxidizer and a second buffer tank which are connected in sequence; the ozone catalytic oxidation unit comprises an ozone generator, an ozone catalytic oxidation tower and a liquid discharge buffer tank which are sequentially connected. The device disclosed by the utility model has the advantages of rapid reaction, thorough decomposition and oxidation, less investment, low operation cost, small occupied area and the like on the caustic sludge waste liquid wastewater which is generated in the production process of petrochemical enterprises and is high in sulfur content, high in COD (chemical oxygen demand), high in salt content and difficult to biodegrade, and can be widely applied to the pretreatment of the caustic sludge waste liquid of the petrochemical enterprises.
Description
Technical Field
The utility model relates to the technical field of environmental engineering wastewater treatment, in particular to a treatment device for alkaline residue wastewater desulfurization and combined oxidation.
Background
Petrochemical refineries employ alkaline refining processes (liquid hydrocarbon alkaline refining, gasoline, especially catalytic gasoline alkaline refining, diesel alkaline refining, ethylene cracking gas alkaline refining, etc.) in many oil refining processes. The alkaline waste liquid with high pollutant content discharged in the refining process has small waste water amount, and the types and the concentrations of pollutants are greatly different according to the types of crude oil to be processed and the processing process.
The alkaline residue wastewater belongs to high-concentration organic wastewater in a refinery, contains a large amount of CODcr, salt, sulfide and the like, has high concentration, greatly influences the normal operation of wastewater treatment facilities of the petrochemical plant and the qualification rate of wastewater treatment, has high toxicity, and can cause permanent damage when some pollutants enter organisms and human bodies and are combined with protein, thus being a highly toxic substance.
Caustic sludge wastewater is one of the most difficult to effectively treat.
At present, the low-pressure wet oxidation method is mainly adopted for treatment abroad, and the investment cost and the operating cost are higher. In China, the treatment is mainly carried out by adopting a neutralization method with lower investment and operation cost and an advanced oxidation method.
The method adopts an ultramicro bubble oxidation desulfurization process, an electrolytic catalytic oxidation process and an ozone catalytic oxidation process to pretreat high-concentration refractory caustic sludge wastewater of petrochemical refining enterprises, the sulfide removal efficiency can reach 90%, and the COD removal rate can reach 70%.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pretreatment device which has compact structure, small occupied area and low investment cost and can be used for petrochemical refining alkaline residue wastewater.
A treatment device for alkaline residue wastewater desulfurization and combined oxidation comprises an ultramicro-bubble oxidation desulfurization unit, an electrolysis catalytic oxidation unit and an ozone catalytic oxidation unit which are sequentially arranged;
the system comprises a super-microbubble oxidation desulfurization unit, a supercritical carbon dioxide unit and a supercritical carbon dioxide unit, wherein the super-microbubble oxidation desulfurization unit comprises a feeding buffer tank, an oxidation reactor and a three-phase separator which are sequentially connected, an exhaust channel is arranged at the top of the three-phase separator, and a wastewater discharge pipeline is arranged at the bottom of the three-phase separator;
the electrolytic catalytic oxidation unit comprises a delivery pump, an electrolytic catalytic oxidizer and a second buffer tank which are sequentially connected, the wastewater discharge pipeline is connected to the delivery pump, the delivery pump is connected to the electrolytic catalytic oxidizer through a pipeline, an aeration pipe in the electrolytic catalytic oxidizer is connected with an aeration fan, and a water outlet pipeline of the electrolytic catalytic oxidizer is connected to the second buffer tank;
ozone catalytic oxidation unit is including connecting gradually ozone generator, ozone catalytic oxidation tower and flowing back buffer tank, the play water of second buffer tank is connected to ozone catalytic oxidation tower through elevator pump and conduit, ozone generator's ozone conveyer pipe is connected with ozone catalytic oxidation tower's bottom, and ozone catalytic oxidation tower's upper portion is equipped with the flowing back pipeline that is connected to the flowing back buffer tank, and the bottom of flowing back buffer tank is equipped with the treated water discharge pipeline.
The top of feeding buffer tank is connected with feed pipeline, and the bottom of feeding buffer tank is passed through pipe connection to the charge pump, and the outlet conduit of charge pump links to each other with the inlet channel of dissolving the air pump, and the inlet channel of dissolving the air pump is connected to oxidation reactor's upper portion, and the outlet conduit of dissolving the air pump is connected to oxidation reactor's bottom, and the waste water in the oxidation reactor realizes the self-loopa through dissolving the air pump.
The bottom and the top of the oxidation reactor are respectively provided with an ultramicro bubble gas distributor and a partition plate, the top of the oxidation reactor is connected with a wastewater discharge pipeline, the tail end of the wastewater discharge pipeline is connected to the middle part of the three-phase separator, and the middle upper part of the three-phase separator is connected with a sulfide separation pipeline.
The oxidation reactor is filled with an oxidant.
And a filler is arranged in the three-phase separator.
And the electrolytic catalytic oxidizer is filled with a particle electrode catalyst.
The particle electrode catalyst is activated carbon particles which are loaded with noble metals and have the particle size of 1-2 mm.
The ozone catalytic oxidation tower is filled with an ozone catalyst loaded with metal oxide, and the filling height of the ozone catalytic oxidation tower is 30-60% of the height of the ozone catalytic oxidation tower.
And exhaust pipes connected to the exhaust passage are arranged at the top of the second buffer tank and the top of the ozone catalytic oxidation tower.
The utility model has the advantages that: by adopting the device, the utility model has the advantages of rapid reaction, thorough decomposition and oxidation (sulfide removal efficiency can reach 90 percent, COD removal rate can reach 70 percent), less investment, low operation cost, small occupied area and the like on the caustic sludge waste liquid wastewater which is generated in the production process of petrochemical enterprises and is high in sulfur content, high in COD (chemical oxygen demand), high in salt content and difficult to biodegrade, and can be widely applied to the pretreatment of the caustic sludge waste liquid of the petrochemical enterprises.
Description of the drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. are used for indicating the orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships which are usually arranged when the products of the present invention are used, the terms are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements which are indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, the present invention should not be construed as being limited. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in the attached drawing, the device comprises an ultramicro bubble oxidation desulfurization unit, an electrolysis catalytic oxidation unit and an ozone catalytic oxidation unit which are arranged in sequence;
the super-microbubble oxidation desulfurization unit comprises a feeding buffer tank 2, an oxidation reactor 5 and a three-phase separator 6 which are connected in sequence, wherein the top of the three-phase separator 6 is provided with an exhaust channel 16, and the bottom of the three-phase separator 6 is provided with a wastewater discharge pipeline;
the electrolytic catalytic oxidation unit comprises a delivery pump 7, an electrolytic catalytic oxidizer 8 and a second buffer tank 10 which are connected in sequence, the wastewater discharge pipeline is connected to the delivery pump 7, the delivery pump 7 is connected to the electrolytic catalytic oxidizer 8 through a pipeline, an aeration pipe inside the electrolytic catalytic oxidizer 8 is connected with an aeration fan 9, and a water outlet pipeline of the electrolytic catalytic oxidizer 8 is connected to the second buffer tank 10;
the ozone catalytic oxidation unit comprises an ozone generator 12, an ozone catalytic oxidation tower 13 and a drainage buffer tank 14 which are sequentially connected, the effluent of the second buffer tank 10 is connected to the ozone catalytic oxidation tower 13 through a lift pump 11 and a water pipeline, an ozone conveying pipe of the ozone generator 12 is connected with the bottom of the ozone catalytic oxidation tower 13, a drainage pipeline connected to the drainage buffer tank 14 is arranged on the upper portion of the ozone catalytic oxidation tower 13, and a treated water discharge pipeline 15 is arranged at the bottom of the drainage buffer tank 14.
The top of feeding buffer tank 2 is connected with charge-in pipeline 1, and pipe connection to charge-in pump 3 is passed through to the bottom of feeding buffer tank 2, and the outlet conduit of charge-in pump 3 links to each other with the inlet conduit of dissolved air pump 4, and the inlet conduit of dissolved air pump 4 is connected to the upper portion of oxidation reactor 5, and the outlet conduit of dissolved air pump 4 is connected to the bottom of oxidation reactor 5, and the waste water in oxidation reactor 5 realizes the self-loopa through dissolved air pump 4.
The bottom and the top of the oxidation reactor 5 are respectively provided with a super-micro bubble gas distributor 18 and a partition plate 19, the top of the oxidation reactor 5 is connected with a wastewater discharge pipeline, the tail end of the wastewater discharge pipeline is connected to the middle part of the three-phase separator 6, and the middle upper part of the three-phase separator 6 is connected with a sulfide separation pipeline 17.
The oxidation reactor 5 is filled with an oxidant, so that the oxidation efficiency is improved.
The three-phase separator 6 is internally provided with a filler, which is beneficial to self-phase extraction and coalescence of disulfide and improves the separation efficiency of sulfide.
The electrolytic catalytic oxidizer 8 is filled with a particle electrode catalyst.
The particle electrode catalyst is activated carbon particles which are loaded with noble metals and have the particle size of 1-2 mm.
The ozone catalytic oxidation tower 13 is filled with an ozone catalyst loaded with metal oxide, and the filling height of the ozone catalytic oxidation tower 13 is 30% -60% of the height of the ozone catalytic oxidation tower.
The top of the second buffer tank 10 and the top of the ozone catalytic oxidation tower 13 are both provided with exhaust pipes connected to an exhaust passage 16.
The working mode is as follows: the alkaline residue wastewater is sequentially treated by a feeding buffer tank 2, an oxidation reactor 5, a three-phase separator 6, an electrolytic catalytic oxidation device 8, an ozone catalytic oxidation tower 13 and a liquid discharge buffer tank 14, and finally discharged through a treated water discharge pipeline 15. The bottom of the oxidation reactor 5 is provided with a super micro bubble gas distributor 18. The ultrafine bubble oxidation desulfurization process, the electrolytic catalytic oxidation process and the ozone catalytic oxidation process are adopted to pretreat high-concentration refractory caustic sludge wastewater of petrochemical refining enterprises, the sulfide removal efficiency can reach 90 percent, and the COD removal rate can reach 70 percent.
The above embodiments are merely illustrative of the technical solutions and features of the present invention, and the purpose thereof is to better enable those skilled in the art to practice the utility model, and it is not intended to limit the scope of the utility model, and all equivalent changes and modifications made according to the spirit of the present invention are within the scope of the present invention, wherein the prior art is not described in detail.
Claims (9)
1. A treatment device for alkaline residue wastewater desulfurization and combined oxidation is characterized by comprising an ultramicro bubble oxidation desulfurization unit, an electrolysis catalytic oxidation unit and an ozone catalytic oxidation unit which are sequentially arranged;
the system comprises a super-microbubble oxidation desulfurization unit, a supercritical carbon dioxide unit and a supercritical carbon dioxide unit, wherein the super-microbubble oxidation desulfurization unit comprises a feeding buffer tank (2), an oxidation reactor (5) and a three-phase separator (6) which are sequentially connected, the bottom of the oxidation reactor (5) is provided with a super-microbubble gas distributor (18), the top of the three-phase separator (6) is provided with an exhaust channel (16), and the bottom of the three-phase separator (6) is provided with a wastewater discharge pipeline;
the electrolytic catalytic oxidation unit comprises a delivery pump (7), an electrolytic catalytic oxidation device (8) and a second buffer tank (10) which are connected in sequence, the wastewater discharge pipeline is connected to the delivery pump (7), the delivery pump (7) is connected to the electrolytic catalytic oxidation device (8) through a pipeline, an aeration pipe inside the electrolytic catalytic oxidation device (8) is connected with an aeration fan (9), and a water outlet pipeline of the electrolytic catalytic oxidation device (8) is connected to the second buffer tank (10);
ozone catalytic oxidation unit is including connecting gradually ozone generator (12), ozone catalytic oxidation tower (13) and flowing back buffer tank (14), the play water of second buffer tank (10) is connected to ozone catalytic oxidation tower (13) through elevator pump (11) and conduit, the ozone conveyer pipe of ozone generator (12) is connected with the bottom of ozone catalytic oxidation tower (13), and the upper portion of ozone catalytic oxidation tower (13) is equipped with the flowing back pipeline that is connected to flowing back buffer tank (14), and the bottom of flowing back buffer tank (14) is equipped with treatment water discharge pipeline (15).
2. The device for desulfurization and combined oxidation of alkaline residue wastewater according to claim 1, characterized in that the top of the feeding buffer tank (2) is connected with a feeding pipeline (1), the bottom of the feeding buffer tank (2) is connected to a feeding pump (3) through a pipeline, the water outlet pipeline of the feeding pump (3) is connected with the water inlet pipeline of the dissolved air pump (4), the water inlet pipeline of the dissolved air pump (4) is connected to the upper part of the oxidation reactor (5), and the water outlet pipeline of the dissolved air pump (4) is connected to the bottom of the oxidation reactor (5).
3. The device for desulfurization and combined oxidation of caustic sludge wastewater according to claim 1, characterized in that the top of the oxidation reactor (5) is provided with a partition plate (19), the top of the oxidation reactor (5) is connected with a wastewater discharge pipe, the end of the wastewater discharge pipe is connected to the middle part of the three-phase separator (6), and the middle upper part of the three-phase separator (6) is connected with a sulfide separation pipe (17).
4. The apparatus for desulfurization and combined oxidation of caustic sludge wastewater according to claim 1, characterized in that the inside of the oxidation reactor (5) is filled with an oxidizing agent.
5. The apparatus for desulfurization and combined oxidation of caustic sludge wastewater according to claim 1, wherein the three-phase separator (6) is internally provided with a filler.
6. The apparatus for desulfurization and combined oxidation of caustic sludge wastewater according to claim 1, wherein the electrolytic catalytic oxidizer (8) is filled with a particle electrode catalyst.
7. The device as claimed in claim 6, wherein the particle electrode catalyst is activated carbon particles with a particle size of 1-2mm and loaded with noble metal.
8. The apparatus for desulfurization and combined oxidation of caustic sludge wastewater according to claim 1, wherein the ozone catalytic oxidation tower (13) is filled with the metal oxide-loaded ozone catalyst, and the filling height of the ozone catalytic oxidation tower (13) is 30-60% of the height of the ozone catalytic oxidation tower.
9. The apparatus for desulfurization and combined oxidation of alkaline residue wastewater according to claim 1, wherein the top of the second buffer tank (10) and the top of the ozone catalytic oxidation tower (13) are provided with exhaust pipes connected to an exhaust passage (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123074165.8U CN216273539U (en) | 2021-12-09 | 2021-12-09 | Treatment device for alkaline residue wastewater desulfurization and combined oxidation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123074165.8U CN216273539U (en) | 2021-12-09 | 2021-12-09 | Treatment device for alkaline residue wastewater desulfurization and combined oxidation |
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| CN216273539U true CN216273539U (en) | 2022-04-12 |
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| CN202123074165.8U Active CN216273539U (en) | 2021-12-09 | 2021-12-09 | Treatment device for alkaline residue wastewater desulfurization and combined oxidation |
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