CN217398710U - Efficient purification treatment device for turbid circulating water of steel rolling - Google Patents
Efficient purification treatment device for turbid circulating water of steel rolling Download PDFInfo
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- CN217398710U CN217398710U CN202221432109.9U CN202221432109U CN217398710U CN 217398710 U CN217398710 U CN 217398710U CN 202221432109 U CN202221432109 U CN 202221432109U CN 217398710 U CN217398710 U CN 217398710U
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- oil removal
- circulating water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses a steel rolling turbid circulating water high-efficiency purification treatment device, which comprises a filtering tank, a sedimentation oil removal tank, a catalytic reaction tank, a biochemical reaction tank, a super filter tank and a clean water tank which are arranged in sequence, wherein a belt type filtering mechanism is arranged above the filtering tank, a slag receiving groove is arranged below the discharge end of the belt type filtering mechanism, and a sealing door for the slag receiving groove to enter and exit is arranged on the side wall of the filtering tank; the lower part in the sedimentation oil removal tank is vertically provided with a middle clapboard which divides the inner cavity of the sedimentation oil removal tank into a buffer cavity and an oil removal cavity, and the oil removal cavity is internally provided with an oil removal mechanism; the catalytic reaction tank is internally provided with an aeration component, a lower water distributor, a photocatalytic component and an upper water distributor from bottom to top, the lower water distributor is communicated with the sedimentation oil removal tank, and the upper water distributor is communicated with a water return port on the catalytic reaction tank through a circulating pipe. The device has the advantages of difficult blockage of equipment, good filtering effect, low filtering efficiency, short treatment flow and low use cost, and can generate better social benefit and economic benefit.
Description
Technical Field
The utility model relates to a steelmaking technical field, concretely relates to high-efficient purification unit of turbid circulating water of steel rolling.
Background
In the process of rolling steel, a large amount of cooling water is needed for cooling components such as a roller, a straightener, a roller way and the like, and the discharged wastewater contains a large amount of impurities such as iron scales, oils, silt and the like due to the direct contact of the cooling water and the steel, and in order to save water resources, the wastewater is generally continuously recycled after the temperature reduction treatment, and is called turbid circulating water. Turbid circulating water is actually a water-solid (metal dust) -oil three-phase complex mixed system and is characterized by high concentration of iron scale, larger particle size and more oil content. The existing turbid circulating water purification treatment system mainly comprises a cyclone well, a spiral filter, an inclined plate sedimentation tank, a chemical oil removal tank and a sand filter tank, and when the system is used for purifying turbid circulating water, the system has some defects: firstly, as the turbid circulating water contains a plurality of impurities such as iron scale, oil, silt and the like, when the turbid circulating water is filtered by using the cyclone well, the spiral filter and the inclined plate sedimentation tank, the cyclone well and the inclined plate sedimentation tank can cause pipeline blockage due to residue of filter residues along with the increase of service time, the filtering effect can be reduced after the turbid circulating water is used for a long time, the filtering efficiency is further influenced, and the integral turbid circulating water treatment efficiency is also influenced; secondly, the existing treatment system has a long flow, and a good filtering effect cannot be achieved by adopting a multi-stage filtering device, so that the maintenance and operation cost is increased. Therefore, it is objectively needed to develop a high-efficiency purification treatment device for the turbid circulating water of steel rolling, which has the advantages of short flow, remarkable purification effect and low operation cost.
Disclosure of Invention
An object of the utility model is to provide a high-efficient purification unit of turbid circulating water of steel rolling that the flow is short, purifying effect is showing, running cost is low.
The utility model aims at realizing the method, which comprises a filtering tank, a sedimentation oil removal tank, a catalytic reaction tank, a biochemical reaction tank, a super filter and a clean water tank which are arranged in sequence, wherein a belt type filtering mechanism is arranged above the filtering tank, a water inlet pipe is arranged at the upper side of the feed end of the belt type filtering mechanism, a slag receiving groove is arranged below the discharge end of the belt type filtering mechanism, the slag receiving groove is slidably arranged on a supporting plate, the supporting plate is arranged on the inner wall of the filtering tank, a sealing door for the slag receiving groove to go in and out is arranged on the side wall of the filtering tank, and a water baffle is vertically arranged on the supporting plate at one side opposite to the sealing door; the lower part in the sedimentation oil removal tank is vertically provided with a middle clapboard which divides the inner cavity of the sedimentation oil removal tank into a buffer cavity and an oil removal cavity, and the oil removal cavity is internally provided with an oil removal mechanism; the catalytic reaction tank is internally provided with an aeration component, a lower water distributor, a photocatalytic component and an upper water distributor from bottom to top, the lower water distributor is communicated with the sedimentation oil removal tank, and the upper water distributor is communicated with a water return port on the catalytic reaction tank through a circulating pipe.
Furthermore, the belt type filtering mechanism comprises a driving roller, a driven roller and a filtering mesh belt, the driving roller and the driven roller are symmetrically arranged in the filtering pool at intervals, the filtering mesh belt is wound on the driving roller and the driven roller, and a driving motor in transmission connection with the driving roller is arranged outside the filtering pool.
Furthermore, at least two groups of cleaning brushes are arranged on the water baffle at intervals, and the upper ends of the cleaning brushes are in contact with the surface of the filter mesh belt.
Further, deoiling mechanism includes horizontal baffle, the outlet pipe, keeps off oil pipe and oil drain port, and horizontal baffle horizontal installation is in the lower part of deoiling intracavity, is provided with the intercommunicating pore on the horizontal baffle, and the outlet pipe is vertical to be installed in the intercommunicating pore top, keeps off the coaxial setting of oil pipe in the outside of outlet pipe, and the lower extreme that keeps off oil pipe is installed on horizontal baffle through 3 ~ 4 voussoirs, keeps off the upper end of oil pipe and is higher than the upper end of outlet pipe, and the oil drain port setting is on keeping off the oil pocket that removes in the oil pipe outside.
Furthermore, the aeration component comprises an aeration disc and an ozone generator, the ozone generator is positioned on the outer side of the catalytic reaction tank, and the ozone generator is communicated with the aeration disc through a gas conveying pipe.
Further, the photocatalytic component comprises a placing bedplate and a steel mesh cage, the placing bedplate is fixedly arranged at the upper part in the catalytic reaction tank, the steel mesh cage is movably placed on the placing bedplate, the photocatalyst is placed in the steel mesh cage, and the top of the steel mesh cage is detachably arrangedThe catalytic reaction tank is provided with a screen plate, and ultraviolet lamps are uniformly distributed in the catalytic reaction tank outside the steel mesh cage. Preferably, the photocatalyst is supported nano TiO 2 Porous ceramic balls of film.
Preferably, the inside vertical axis of rotation that is provided with of steel cylinder mould, the equipartition is provided with many puddlers in the axis of rotation, and the lower extreme of axis of rotation extends to the photocatalytic reaction pond below after passing the steel cylinder mould, and the below of photocatalytic reaction pond is provided with drive axis of rotation pivoted gear drive mechanism.
Further, a waste heat recoverer is arranged between the precipitation oil removal tank and the catalytic reaction tank.
The beneficial effect that this device produced is: firstly, the structure of the filter tank is optimized, the traditional fixed filter plate structure is changed into a rotary filter structure, so that a rotary belt type filter mechanism can intercept and convey large-particle impurities such as oxide skin, oil stain and the like in turbid circulating water, filter residues intercepted and conveyed by the belt type filter mechanism can automatically fall into a residue receiving groove, the residue receiving groove is cleaned regularly only by opening a sealing door, the belt type filter mechanism has a good intercepting and filtering effect, the phenomenon of blockage cannot occur, and the good filtering effect can be continuously maintained; the oil removing mechanism in the sedimentation oil removing tank can separate the oil stain in the turbid circulating water under the action of gravity, and has good oil removing effect and low cost; thirdly, the synergistic action of aeration subassembly and catalytic component in the catalytic reaction pond can carry out ring-opening or chain scission reaction to difficult degradation organic pollutant in the turbid circulating water, degrades the organic matter in the turbid circulating water, improves the biodegradability of waste water, and then further improvement purification treatment's effect and efficiency. Compared with the prior art, the device has the advantages that: the device is not easy to block, the filtering effect is good, the filtering efficiency is low, the treatment process is short, the use cost is low, good social benefit and economic benefit can be generated, and the popularization and the use are easy.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a filtration tank;
FIG. 3 is a schematic structural diagram of a sedimentation oil removal tank;
FIG. 4 is a schematic view of a catalytic reaction cell;
in the figure: 1-a filter tank, 11-a water inlet pipe, 12-a slag receiving tank, 13-a support plate, 14-a sealing door, 15-a water baffle, 16-a drive roller, 17-a driven roller, 18-a filter mesh belt, 19-a cleaning brush, 2-a precipitation oil removal tank, 21-a middle partition plate, 22-a buffer cavity, 23-an oil removal cavity, 24-a horizontal partition plate, 25-a water outlet pipe, 26-an oil baffle pipe, 27-an oil outlet, 28-a wedge block, 3-a catalytic reaction tank, 31-a lower water distributor, 32-an upper water distributor, 33-a circulating pipe, 34-an aeration disc, 35-an ozone generator, 36-a placing table plate, 37-a steel mesh cage, 38-an ultraviolet lamp, 39-a rotating shaft, a 4-a biochemical reaction tank, 5-an ultrafiltration tank and 6-a water purification tank, 7-waste heat recoverer.
Detailed Description
The following description of the present invention is provided with reference to the accompanying drawings, which are not intended to limit the present invention in any way, and all modifications and improvements made based on the teachings of the present invention belong to the protection scope of the present invention.
As shown in figures 1-4, the utility model discloses a filtering ponds 1, sedimentation deoiling pond 2, catalytic reaction pond 3, biochemical reaction pond 4, ultrafiltration pond 5 and clean water basin 6 that set gradually, biochemical reaction pond 4, ultrafiltration pond 5 and clean water basin 6 adopt the structure among the current sewage treatment technique, filtering ponds 1's top setting is provided with belt filter mechanism, and belt filter mechanism's feed end upside is provided with inlet tube 11, and belt filter mechanism's discharge end below is provided with connects slag chute 12, connect slag chute 12 slidable mounting on backup pad 13, backup pad 13 is installed on filtering ponds 1's inner wall, be provided with on filtering ponds 1's the lateral wall and supply to connect sealing door 14 of slag chute 12 business turn over, vertically be provided with breakwater 15 on the backup pad 13 of one side relative with sealing door 14, breakwater 15 can prevent that water from flowing back to connect in the slag chute 12, and belt filter mechanism can be to the cinder of turbid circulating water, Large-particle impurities such as oil stains and the like are intercepted and conveyed, filter residues intercepted and conveyed by the belt type filtering mechanism can automatically fall into the residue receiving groove 12, and the residue receiving groove 12 is cleaned regularly only by opening the sealing door 14; the lower part in the sedimentation oil removal tank 2 is vertically provided with a middle partition plate 21, the middle partition plate 21 divides the inner cavity of the sedimentation oil removal tank 2 into a buffer cavity 22 and an oil removal cavity 23, the bottom of the buffer cavity 22 is provided with a slag discharge pipe, impurities at the bottom of the buffer cavity 22 can be discharged through the slag discharge pipe after the sedimentation oil removal tank is used for a period of time, an oil removal mechanism is arranged in the oil removal cavity 23, the oil removal mechanism can separate oil stains in turbid circulating water under the action of gravity, the oil removal effect is good, and the cost is low; from the bottom up is provided with the aeration subassembly in the catalytic reaction pond 3, water-locator 31 down, photocatalysis subassembly and last water-locator 32, water-locator 31 communicates with sediment deoiling pond 2 down, go up water-locator 32 and pass through circulating pipe 33 and the return water mouth intercommunication on the catalytic reaction pond 3, it is liquid distributor to go up water-locator 32 and water-locator 31 down, aeration subassembly and catalytic component's synergism, can carry out ring-opening or chain scission reaction to difficult degradation organic pollutant in the turbid circulating water, degrade the organic matter in the turbid circulating water, improve the biodegradability of waste water, and then further improvement purification treatment's effect and efficiency.
The purification process of the device is as follows: turbid circulating water enters the filter tank 1 through the water inlet pipe 11, after being filtered by the belt filter, the turbid circulating water falls into the bottom of the filter tank 1, impurities such as oxide skin, oil stains and the like intercepted by the belt conveyor fall into the slag receiving tank 12 along with the movement of the belt conveyor, after the filter tank is used for a period of time, the sealing door 14 is only required to be opened, the slag receiving tank 12 is pulled out from the sealing door 14, the impurities in the slag receiving tank 12 are cleaned and removed and pushed into the filter tank 1 again for recycling, the turbid circulating water discharged from the bottom of the filter tank 1 firstly enters the buffer cavity 22 for buffer precipitation, then flows into the oil removing cavity 23 from the upper end of the intermediate partition plate 21, after the oil stains are removed by the oil removing mechanism, the turbid circulating water enters the lower water distributor of the catalytic reaction tank 3, is distributed in the catalytic reaction tank 3 through the lower water distributor 31, the aeration assembly is used for oxidation treatment of the turbid circulating water, the catalysis subassembly carries out the photocatalytic oxidation to turbid circulating water, turbid circulating water can degrade macromolecular organic pollutant and carry out open loop or chain scission reaction through ozone oxidation and photocatalytic oxidation's synergism in catalytic oxidation pond 3, degrade partial organic matter, improve the biodegradability of turbid circulating water, and then improve the treatment effeciency in biochemical reaction pond, at the in-process of photocatalytic oxidation reaction, turbid circulating water in the catalytic reaction pond 3 enters into last water-locator 32 through circulating pipe 33, turbid circulating water flows through the hydrologic cycle, can improve the effect of photocatalytic oxidation's decomposition, turbid circulating water after catalytic oxidation passes through biochemical reaction pond 4 and ultrafiltration pond 5's processing back, enter into the water purification pond and can recycle.
Further, the belt type filtering mechanism comprises a driving roller 16, a driven roller 17 and a filtering mesh belt 18, the diameter of a filtering hole on the filtering mesh belt 18 is set to be a structure which is gradually reduced from a feeding end to a discharging end, the driving roller 16 and the driven roller 17 are symmetrically installed in the filtering pool 1 at intervals, the filtering mesh belt 18 is wound on the driving roller 16 and the driven roller 17, a driving motor which is in transmission connection with the driving roller 16 is arranged outside the filtering pool 1, when the belt type filtering mechanism is used, the driving roller 16 is driven by the driving motor to rotate, the driving roller 16 can drive the filtering mesh belt 18 to do rotary motion in the rotating process, and in the moving process of the filtering mesh belt 18, large-particle impurities such as oxide skin, oil stains and the like in turbid circulating water are intercepted on the upper surface of the filtering mesh belt 18, and the intercepted large-particle impurities also move along with the movement of the filtering mesh belt 18.
Preferably, at least two groups of cleaning brushes 19 are arranged on the water baffle 15 at intervals, the upper ends of the cleaning brushes 19 are in contact with the surface of the filter mesh belt 18, and the cleaning brushes 19 can clean the surface of the filter mesh belt 18, so that the filter mesh belt 18 is prevented from being blocked, and the filtering effect of the filter mesh belt 18 is ensured.
Further, deoiling mechanism includes horizontal baffle 24, outlet pipe 25, keeps off oil pipe 26 and oil drain port 27, horizontal baffle 24 horizontal installation is in the lower part that removes in the oil pocket 23, be provided with the intercommunicating pore on the horizontal baffle 24, outlet pipe 25 is vertical to be installed in the intercommunicating pore top, keep off the coaxial setting in the outside of outlet pipe 25 of oil pipe 26, keep off oil pipe 26's lower extreme and install 24 on horizontal baffle through 3 ~ 4 voussoirs 28, the upper end that keeps off oil pipe 26 is higher than outlet pipe 25, oil drain port 27 sets up on the oil pocket 23 that removes that keeps off the oil pipe 26 outside, after turbid circulating water enters into in removing oil pocket 23, under the effect of gravity, the greasy dirt floats on the surface of turbid circulating water, keeps off the bottom of oil pipe 26 and is heightened by voussoir 28, turbid circulating water just can enter into in the clearance between oil pipe 26 and the outlet pipe 25 from the bottom that keeps off oil pipe 26, enters into catalytic reaction again in the cavity of horizontal baffle 24 below from the bottom discharge of outlet pipe 25 again The oil dirt floating on the surface of the turbid circulating water in the tank 3 is discharged from the oil discharge port 27.
Further, in order to achieve a better aeration effect, the aeration assembly comprises an aeration disc 34 and an ozone generator 35, the ozone generator 35 is positioned outside the catalytic reaction tank 3, and the ozone generator 35 is communicated with the aeration disc 34 through a gas pipe.
Further, the photocatalytic component comprises a placing table plate 36 and a steel mesh cage 37, the placing table plate 36 is fixedly installed at the upper portion of the inside of the catalytic reaction tank 3, the steel mesh cage 37 is movably installed on the placing table plate 36, a photocatalyst is placed in the steel mesh cage 37, a mesh plate is detachably installed at the top of the steel mesh cage 37, the structure can facilitate taking out and putting in of the photocatalyst, ultraviolet lamps 38 are uniformly arranged in the catalytic reaction tank on the outer side of the steel mesh cage 37, under the irradiation of the ultraviolet lamps 38, the photocatalytic reaction effect is better, the reaction speed is higher, and preferably, the photocatalyst is loaded with nano TiO 2 The porous ceramic ball of film, the inside vertical axis of rotation 39 that is provided with of steel cylinder mould 37, the equipartition is provided with many puddlers on the axis of rotation 39, the lower extreme of axis of rotation 39 passes and extends to 3 below in the photocatalytic reaction pond behind the steel cylinder mould 37, the below in photocatalytic reaction pond 3 is provided with drive axis of rotation 39 pivoted gear drive mechanism, utilizes axis of rotation 39 to drive the puddler and rotates, and the puddler can improve the mobility of photocatalyst in crossing steel cylinder mould 37, and then improves photocatalytic oxidation efficiency.
Further, be provided with waste heat recoverer 7 between precipitation deoiling pond 2 and the catalytic reaction pond 3, the light catalytic oxidation reaction in-process can release the heat, and the reaction rate can be accelerated in the temperature rising, but after the temperature surpassed a definite value, danger easily takes place for the sharp rise of reaction rate, in order to avoid the danger that takes place because of the sharp rise of temperature, waste heat recoverer 7 can carry out the heat transfer cooling to turbid circulating water, can guarantee like this that the temperature of light catalytic oxidation reaction meets the requirements.
Claims (9)
1. The efficient purification treatment device for the turbid circulating water of rolled steel is characterized by comprising a filtering tank (1), a precipitation oil removal tank (2), a catalytic reaction tank (3), a biochemical reaction tank (4), an ultrafiltration tank (5) and a water purification tank (6) which are sequentially arranged, wherein a belt type filtering mechanism is arranged above the filtering tank (1), a water inlet pipe (11) is arranged on the upper side of the feed end of the belt type filtering mechanism, a slag receiving groove (12) is arranged below the discharge end of the belt type filtering mechanism, the slag receiving groove (12) is slidably arranged on a supporting plate (13), the supporting plate (13) is arranged on the inner wall of the filtering tank (1), a sealing door (14) for the slag receiving groove (12) to enter and exit is arranged on the side wall of the filtering tank (1), and a water baffle (15) is vertically arranged on the supporting plate (13) on the side opposite to the sealing door (14); the lower part in the sedimentation oil removal tank (2) is vertically provided with a middle partition plate (21), the middle partition plate (21) divides the inner cavity of the sedimentation oil removal tank (2) into a buffer cavity (22) and an oil removal cavity (23), and an oil removal mechanism is arranged in the oil removal cavity (23); an aeration component, a lower water distributor (31), a photocatalytic component and an upper water distributor (32) are arranged in the catalytic reaction tank (3) from bottom to top, the lower water distributor (31) is communicated with the sedimentation oil removal tank (2), and the upper water distributor (32) is communicated with a water return port on the catalytic reaction tank (3) through a circulating pipe (33).
2. The efficient purification treatment device for the turbid circulating water of rolled steel according to claim 1, characterized in that: the belt type filtering mechanism comprises a driving roller (16), a driven roller (17) and a filtering mesh belt (18), wherein the driving roller (16) and the driven roller (17) are symmetrically installed in the filtering pool (1) at intervals, the filtering mesh belt (18) is wound on the driving roller (16) and the driven roller (17), and a driving motor in transmission connection with the driving roller (16) is arranged outside the filtering pool (1).
3. The efficient purification treatment device for turbid circulating water generated in steel rolling according to claim 2, characterized in that: at least two groups of cleaning brushes (19) are arranged on the water baffle (15) at intervals, and the upper ends of the cleaning brushes (19) are in contact with the surface of the filter mesh belt (18).
4. The efficient purification treatment device for turbid circulating water generated in steel rolling according to claim 1, characterized in that: deoiling mechanism includes horizontal baffle (24), outlet pipe (25), keeps off oil pipe (26) and oil drain port (27), horizontal baffle (24) horizontal installation is in the lower part that removes in oil pocket (23), be provided with the intercommunicating pore on horizontal baffle (24), outlet pipe (25) are vertical to be installed in the intercommunicating pore top, keep off the coaxial setting in the outside of outlet pipe (25) of oil pipe (26), the lower extreme that keeps off oil pipe (26) is installed on horizontal baffle (24) through 3 ~ 4 voussoirs (28), the upper end that keeps off oil pipe (26) is higher than the upper end of outlet pipe (25), oil drain port (27) set up on oil pocket (23) that removes in keeping off oil pipe (26) outside.
5. The efficient purification treatment device for turbid circulating water generated in steel rolling according to claim 1, characterized in that: the aeration component comprises an aeration disc (34) and an ozone generator (35), the ozone generator (35) is positioned on the outer side of the catalytic reaction tank (3), and the ozone generator (35) is communicated with the aeration disc (34) through a gas pipe.
6. The efficient purification treatment device for turbid circulating water generated in steel rolling according to claim 1, characterized in that: the photocatalytic component comprises a placing bedplate (36) and a steel mesh cage (37), the placing bedplate (36) is fixedly installed on the upper portion of the inside of the catalytic reaction tank (3), the steel mesh cage (37) is movably placed on the placing bedplate (36), a photocatalyst is placed in the steel mesh cage (37), a mesh plate is detachably installed at the top of the steel mesh cage (37), and ultraviolet lamps (38) are uniformly distributed in the catalytic reaction tank on the outer side of the steel mesh cage (37).
7. The efficient purification treatment device for the turbid circulating water of rolled steel as claimed in claim 6, wherein: the photocatalyst is loaded with nano TiO 2 Porous ceramic balls of film.
8. The efficient purification treatment device for turbid circulating water generated in steel rolling according to claim 6, wherein: the inside of steel cylinder mould (37) is vertical to be provided with axis of rotation (39), the equipartition is provided with many puddlers on axis of rotation (39), the lower extreme of axis of rotation (39) passes and extends to catalytic reaction pond (3) below behind steel cylinder mould (37), the below of catalytic reaction pond (3) is provided with drive axis of rotation (39) pivoted gear drive.
9. The efficient purification treatment device for turbid circulating water generated in steel rolling according to claim 1, characterized in that: a waste heat recoverer (7) is arranged between the sedimentation oil removal tank (2) and the catalytic reaction tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221432109.9U CN217398710U (en) | 2022-06-09 | 2022-06-09 | Efficient purification treatment device for turbid circulating water of steel rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221432109.9U CN217398710U (en) | 2022-06-09 | 2022-06-09 | Efficient purification treatment device for turbid circulating water of steel rolling |
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| CN217398710U true CN217398710U (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221432109.9U Active CN217398710U (en) | 2022-06-09 | 2022-06-09 | Efficient purification treatment device for turbid circulating water of steel rolling |
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| CN (1) | CN217398710U (en) |
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2022
- 2022-06-09 CN CN202221432109.9U patent/CN217398710U/en active Active
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