CN117602715A - Industrial wastewater treatment device and method - Google Patents
Industrial wastewater treatment device and method Download PDFInfo
- Publication number
- CN117602715A CN117602715A CN202311681956.8A CN202311681956A CN117602715A CN 117602715 A CN117602715 A CN 117602715A CN 202311681956 A CN202311681956 A CN 202311681956A CN 117602715 A CN117602715 A CN 117602715A
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- China
- Prior art keywords
- filter
- fixedly connected
- industrial wastewater
- wastewater treatment
- treatment device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a treatment device and a treatment method for industrial wastewater, and belongs to the field of wastewater treatment, wherein the device comprises a base, a filter frame and a flocculation cylinder are fixedly connected to the base, two groups of rotating shafts are rotatably connected to the inside of the filter frame, the outer walls of the two groups of rotating shafts are rotatably connected with a conveyor belt, a plurality of groups of filter plates are equidistantly arranged on the outer walls of the conveyor belt, a water supply pump is arranged inside the flocculation cylinder, the water outlet end of the water supply pump is fixedly connected with a water supply pipe, and one end of the water supply pipe, which is far away from the water supply pump, is fixedly connected to the top of the filter frame; the multi-group filter on the outer wall of the conveyor belt is driven to rotate through the rotating shaft, waste water discharged from the water supply pipe is filtered, the filter plates are reduced to be filtered for a long time and blocked by flocculates, the filtering effect of the filter plates is improved, the cleaning box is driven to rotate above one group of filter plates through the rotating rod, the filter plates are reversely flushed, flocculates on the back surfaces of the filter plates are flushed out, and the filter plates are convenient to recycle and filter.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a device and a method for treating industrial wastewater.
Background
Industrial wastewater includes production wastewater, production sewage and cooling water, and refers to wastewater and waste liquid generated in an industrial production process, wherein the wastewater contains industrial production materials, intermediate products and byproducts which run off along with water, and pollutants generated in the production process. Industrial waste water is of various kinds and complex in composition. Because industrial wastewater often contains various toxic substances, the polluted environment has great harm to human health, the industrial wastewater is developed and comprehensively utilized to convert the harmful substances into beneficial substances, and the industrial wastewater can be discharged after being treated by adopting corresponding purifying measures according to the pollutant components and the concentration in the wastewater.
When carrying out filtration treatment to industrial waste water, need use filter equipment to filter the waste water after the flocculation, prior art's filter equipment is when using, and filter equipment surface is easily by the adhesion of flocculation thing impurity to lead to being stopped up filter equipment's filtration pore, thereby influence filter equipment's normal use, need the manual work to shut down and clear up, then install again and use, reduced the efficiency of handling.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide the industrial wastewater treatment device and the industrial wastewater treatment method, which solve the problems that in the prior art, the surface of a filtering device is easy to be adhered by flocculate impurities, so that the filtering holes of the filtering device are blocked, the normal use of the filtering device is affected, the filtering device needs to be manually stopped for cleaning, and then is reinstalled for use, so that the treatment efficiency is reduced.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides an industrial wastewater treatment device, includes the base, fixedly connected with filters frame and flocculation cylinder on the base, the inside rotation of filter frame is connected with two sets of pivots, two sets of pivot outer wall rotate and are connected with the conveyer belt, conveyer belt outer wall equidistance array has the multiunit filter, flocculation cylinder is inside to be provided with the working shaft, working shaft play water end fixedly connected with delivery pipe, the one end fixedly connected with that the working shaft was kept away from at the working shaft is at the filter frame top, and the export is located the upside of conveyer belt one side filter; the filter frame one side fixedly connected with mount, the inside dwang that rotates of mount is connected with, dwang outer wall fixedly connected with washs the case, wash the case bottom and seted up multiunit and wash the hole, wash the case and rotate and wash the filter.
As a further scheme of the invention: the side of filter all fixedly connected with sealing strip, the sealing strip pastes with the filter frame inner wall mutually.
As a further scheme of the invention: the cleaning device comprises a fixing frame, and is characterized in that a cleaning assembly is arranged on the fixing frame and comprises a pump body fixedly connected to the top of the fixing frame, a cavity is formed in the rotating rod and is communicated with a cleaning box, a rotary joint is fixedly connected to the top of the rotating rod, and the rotary joint is communicated with the output end of the pump body.
As a further scheme of the invention: the outer wall of the conveyor belt is equidistantly provided with a plurality of groups of limiting blocks, and the plurality of groups of limiting blocks are respectively propped against one side of the filter plate.
As a further scheme of the invention: the filter frame is characterized in that a groove is formed in the side wall of the filter frame, a driving shaft is connected in the groove in a rotating mode, a deflector rod is fixedly connected to the outer wall of the driving shaft, and the deflector rod is intermittently matched with the filter plate to perform knocking cleaning.
As a further scheme of the invention: elastic ropes are fixedly connected between each group of filter plates and the conveyor belt.
As a further scheme of the invention: the base top fixedly connected with baffle, the baffle is located the middle of the conveyer belt bottom, filter frame one side fixedly connected with drain pipe.
As a further scheme of the invention: the base bottom is provided with the collecting box, set up on the base with the logical groove that collecting box is linked together, logical groove is located one side of baffle.
As a further scheme of the invention: the flocculation cylinder top fixedly connected with agitator motor, agitator motor output runs through the flocculation cylinder and fixedly connected with puddler.
A method for treating industrial wastewater, comprising the steps of:
1. adding wastewater and flocculant into a flocculation cylinder for flocculation, pumping the wastewater from the flocculation cylinder into a water supply pipe through a water supply pump, and flowing the wastewater and flocculant from the top of a filter frame onto a filter plate on the outer wall of a conveyor belt for filtration;
2. the rotary shaft is started to drive the conveying belt to rotate, the conveying belt drives the filter plate to rotate, the filter plate below the water outlet of the water supply pipe rotates to the other side, then the rotary rod is started to drive the cleaning box to rotate to the upper side of the filter plate, the pump body is started to pump cleaning liquid or air, the cleaning liquid or air is sent into the cleaning box through the rotary joint and the cavity, and then the cleaning liquid or air is sprayed onto the filter plate through the flushing hole to back flush the filter plate, so that the filter plate is cleaned up, and then the circulating rotary filtering is used.
The invention has the beneficial effects that:
according to the invention, the rotating shaft drives the plurality of groups of filter plates on the outer wall of the conveyor belt to rotate, so that wastewater discharged by the water supply pipe is filtered, the filter plates are reduced from being blocked by flocculates after long-time filtration, the filtering effect of the filter plates is improved, and meanwhile, the rotating rod drives the cleaning box to rotate to the upper part of one group of filter plates, so that the filter plates are reversely washed, flocculates on the back surfaces of the filter plates are washed out, and the filter plates can be conveniently recycled for filtering.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the portion A of FIG. 1 according to the present invention;
fig. 3 is a schematic view of the overall structure of the conveyor belt according to the present invention.
In the figure: 1. a base; 101. a through groove; 2. a filter frame; 201. a fixing frame; 3. a flocculation cylinder; 301. a water supply pump; 302. a water supply pipe; 4. a rotating shaft; 401. a conveyor belt; 402. a filter plate; 421. a sealing strip; 422. a limiting block; 423. an elastic rope; 5. a rotating lever; 6. a cleaning box; 601. flushing the hole; 7. a drive shaft; 701. a deflector rod; 8. cleaning the assembly; 801. a pump body; 802. a cavity; 803. a rotary joint; 9. a stirring motor; 901. a stirring rod; 10. a collection box; 11. a partition plate; 12. and (5) a water drain pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
1-3, a treatment device for industrial wastewater comprises a base 1, wherein a filter frame 2 and a flocculation cylinder 3 are fixedly connected to the base 1, two groups of rotating shafts 4 are rotatably connected to the inside of the filter frame 2, the outer walls of the two groups of rotating shafts 4 are rotatably connected with a conveyor belt 401, a plurality of groups of filter plates 402 are equidistantly arranged on the outer walls of the conveyor belt 401, a water supply pump 301 is arranged in the flocculation cylinder 3, the water outlet end of the water supply pump 301 is fixedly connected with a water supply pipe 302, one end of the water supply pipe 302, far from the water supply pump 301, is fixedly connected to the top of the filter frame 2, and an outlet is positioned on the upper side of the filter plate 402 on one side of the conveyor belt 401; filter frame 2 one side fixedly connected with mount 201, the inside rotation of mount 201 is connected with dwang 5, dwang 5 outer wall fixedly connected with washs case 6, wash case 6 bottom and seted up multiunit and wash hole 601, wash case 6 and rotate and wash filter 402, be provided with cleaning element 8 on the mount 201, cleaning element 8 includes the pump body 801, pump body 801 fixed connection is at mount 201 top, cavity 802 has been seted up to dwang 5 inside, cavity 802 is linked together with washs case 6, dwang 5 top fixedly connected with rotary joint 803, rotary joint 803 is linked together with pump body 801 output.
As shown in fig. 1, fig. 2 and fig. 3, the side surfaces of the filter plates 402 are fixedly connected with sealing strips 421, the sealing strips 421 are attached to the inner wall of the filter frame 2, so that when the wastewater is fed onto the filter plates 402 by the water supply pipe 302 for filtering, the leakage of the wastewater from gaps at the attached positions of the filter plates 402 and the filter frame 2 is avoided, meanwhile, a plurality of groups of limiting blocks 422 are arrayed at equal intervals on the outer wall of the conveyor belt 401, the limiting blocks 422 are respectively abutted against one side of the filter plates 402, the filter plates 402 are supported, and the bending deformation of the filter plates 402 when the wastewater is impacted is avoided.
The side wall of the filter frame 2 is provided with a groove, a driving shaft 7 is rotatably connected in the groove, a deflector rod 701 is fixedly connected to the outer wall of the driving shaft 7, and the deflector rod 701 is intermittently matched with the filter plate 402 to perform knocking cleaning.
As shown in fig. 1 and fig. 2, the above-mentioned filter plates 402 and the conveyor belt 401 are fixedly connected with elastic ropes 423, through the arrangement of the elastic ropes 423, on one hand, downward deformation caused by the resistance attached to the inner wall of the filter frame 2 when the filter plates 402 move is avoided, and a gap is formed between the filter plates 402 and the filter frame 2, so that the flocculate in the wastewater is incompletely filtered through the gap, and on the other hand, when the filter plates 402 are knocked and pushed by the deflector rods 701, the elastic ropes 423 can rapidly pull the filter plates 402 to reset and offset the limiting blocks 422, so that more vibration can be generated, and the effect of removing the flocculate on the filter plates 402 is improved.
As shown in fig. 1, the top of the base 1 is fixedly connected with the partition plate 11, the partition plate 11 is positioned in the middle of the bottom of the conveyor belt 401, so that the waste water filtered on two sides of the conveyor belt 401 and the flocculate cleaned on the filter plate 402 are separated, one side of the filter frame 2 is fixedly connected with the drain pipe 12, the filtered waste water is discharged through the drain pipe 12, the bottom of the base 1 is provided with the collecting box 10, the base 1 is provided with the through groove 101 communicated with the collecting box 10, and the through groove 101 is positioned on one side of the partition plate 11 for collecting the flocculate, so that the flocculate cleaned on the filter plate 402 is discharged into the collecting box 10 through the through groove 101 for collection.
As shown in fig. 1, the top of the flocculation cylinder 3 is fixedly connected with a stirring motor 9, the output end of the stirring motor 9 penetrates through the flocculation cylinder 3 and is fixedly connected with a stirring rod 901, the stirring rod 901 is driven to rotate by the stirring motor 9, wastewater and flocculant inside the flocculation cylinder 3 are stirred and mixed, and the flocculation efficiency of the flocculant on the wastewater is improved.
A method for treating industrial wastewater, comprising the steps of:
1. the wastewater and the flocculant are added into a flocculation cylinder 3 for flocculation. Then the water is pumped out of the flocculation cylinder 3 to the inside of the water supply pipe 302 by the water supply pump 301, and flows into the filter plate 402 on the outer wall of the conveyor belt 401 from the top of the filter frame 2 for filtering;
2. the rotary shaft 4 is started to drive the conveying belt 401 to rotate, the conveying belt 401 drives the filter plate 402 to rotate, the filter plate 402 at the lower part of the water outlet of the water supply pipe 302 rotates to the other side, then the rotary rod 5 is started to drive the cleaning box 6 to rotate to the upper side of the filter plate 402, the pump body 801 is started to pump cleaning liquid or air, the cleaning liquid or air is sent into the cleaning box 6 through the rotary joint 803 and the cavity 802, and then the cleaning liquid is sprayed onto the filter plate 402 through the flushing hole 601 to back flush the filter plate 402, so that the filter plate 402 is cleaned, and then the circulating rotary filtering is used.
The working principle of the invention is as follows: when the flocculation device is used by a user, waste water and flocculant are added into the flocculation cylinder 3, then the stirring motor 9 is started, the stirring motor 9 drives the stirring rod 901 to rotate, the stirring rod 901 stirs and mixes the waste water and the flocculant in the flocculation cylinder 3, the flocculant is used for carrying out rapid mixing flocculation on the waste water, then the water supply pump 301 is started, the water supply pump 301 is used for pumping the waste water from the flocculation cylinder 3, the waste water is sent to the upper part of the filter plate 402 on one side of the conveyor belt 401 through the water supply pipe 302 and flows out, the waste water flows out to the filter plate 402, flocs in the waste water are filtered through the filter plate 402 and then continuously flow downwards, the filtered waste water flows into the base 1 and is discharged through the drain pipe 12, the filtration treatment of the waste water is completed, the rotary shaft 4 (the rotary shaft 4 is of a driving source integrated structure) is started to drive the conveyor belt 401 to rotate, the conveyer belt 401 drives the filter plate 402 to rotate, so that the filter plate 402 in filtering work rotates out from the lower part of the water supply pipe 302, meanwhile, the clean filter plate 402 at the other side of the conveyer belt 401 rotates to the lower part of the water supply pipe 302 for filtering, thereby avoiding the problem of filtration efficiency reduction caused by the blockage of the filter plate 402 by flocculate, improving the efficiency of wastewater treatment and filtration, when the filter plate 402 blocked by flocculate rotates to the lower part of the horizontal position of the cleaning box 6, starting a rotating motor (shown in figure 1) to drive a rotating rod 5 to rotate, the rotating rod 5 drives the cleaning box 6 to rotate to the position right above the filter plate 402, starting a pump 801 (the output end of the pump 801 is connected with cleaning liquid), pumping the cleaning liquid by the pump 801, then sending the cleaning liquid into the cleaning box 6 through a rotating joint 803 and a cavity 802, and then spraying the cleaning liquid to the upper side of the filter plate 402 through a flushing hole 601 at the bottom of the cleaning box 6, at this moment, after the filter 402 is driven by the conveyor belt 401 to rotate, one surface of the blocked flocculate is downward, the cleaning solution is used for carrying out back flushing on the filter 402 from the upper side of the filter 402, the flocculate blocked at the bottom of the filter 402 is flushed out for cleaning, thereby the filter 402 is convenient for recycling, the driving shaft 7 is restarted, the driving shaft 7 drives the deflector rod 701 to rotate, the deflector rod 701 rotates to knock the filter 402 and simultaneously pushes the filter 402 to rotate downwards, the joint of the deflector rod 701 is downwards bent, then the deflector rod 701 is separated from the filter 402, the filter 402 is reset to generate vibration, thereby the residual flocculate at the bottom of the filter 402 is vibrated out for cleaning, the cleaning effect on the filter 402 is further improved, the filter 402 after the cleaning is driven by the rotating shaft 4 for recycling, and the wastewater is filtered, so that the filter process of the wastewater does not need to stop, clean and replace the filter 402, and the efficiency of the wastewater filtering and cleaning is improved.
The time and the stay time when the rotating rod 5 drives the cleaning box 6 to rotate and the driving shaft 7 drives the deflector rod 701 to rotate are controlled by arranging an induction controller and a time relay.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (10)
1. The utility model provides an industrial wastewater treatment device, includes base (1), its characterized in that, fixedly connected with filters frame (2) and flocculation cylinder (3) on base (1), the inside rotation of filter frame (2) is connected with two sets of pivots (4), two sets of pivot (4) outer wall rotate and are connected with conveyer belt (401), conveyer belt (401) outer wall equidistance array has multiunit filter (402), flocculation cylinder (3) inside is provided with working pump (301), working pump (301) play water end fixedly connected with delivery pipe (302), one end fixedly connected with at filter frame (2) top of working pump is kept away from to delivery pipe (302), and the export is located the upside of conveyer belt (401) one side filter (402).
The filter frame is characterized in that a fixing frame (201) is fixedly connected to one side of the filter frame (2), a rotating rod (5) is connected to the inside rotation of the fixing frame (201), a cleaning box (6) is fixedly connected to the outer wall of the rotating rod (5), a plurality of groups of cleaning holes (601) are formed in the bottom of the cleaning box (6), and the cleaning box (6) rotates to clean the filter plates (402).
2. The industrial wastewater treatment device according to claim 1, wherein sealing strips (421) are fixedly connected to the sides of the filter plates (402), and the sealing strips (421) are attached to the inner wall of the filter frame (2).
3. The industrial wastewater treatment device according to claim 1, wherein a cleaning assembly (8) is arranged on the fixing frame (201), the cleaning assembly (8) comprises a pump body (801), the pump body (801) is fixedly connected to the top of the fixing frame (201), a cavity (802) is formed in the rotating rod (5), the cavity (802) is communicated with the cleaning box (6), a rotary joint (803) is fixedly connected to the top of the rotating rod (5), and the rotary joint (803) is communicated with the output end of the pump body (801).
4. An industrial wastewater treatment device according to claim 1, wherein a plurality of groups of limiting blocks (422) are arranged on the outer wall of the conveyor belt (401) in an equidistant array, and the limiting blocks (422) are respectively propped against one side of the filter plate (402).
5. The industrial wastewater treatment device according to claim 1, wherein the side wall of the filtering frame (2) is provided with a groove, a driving shaft (7) is rotatably connected in the groove, a deflector rod (701) is fixedly connected to the outer wall of the driving shaft (7), and the deflector rod (701) is intermittently matched with the filtering plate (402) to perform knocking cleaning.
6. An industrial wastewater treatment device according to claim 1 or 5, wherein elastic ropes (423) are fixedly connected between each group of filter plates (402) and the conveyor belt (401).
7. The industrial wastewater treatment device according to claim 1, wherein the top of the base (1) is fixedly connected with a partition board (11), the partition board (11) is positioned in the middle of the bottom of the conveyor belt (401), and one side of the filter frame (2) is fixedly connected with a drain pipe (12).
8. The industrial wastewater treatment device according to claim 7, wherein a collecting box (10) is arranged at the bottom of the base (1), a through groove (101) communicated with the collecting box (10) is formed in the base (1), and the through groove (101) is located on one side of the partition board (11).
9. The industrial wastewater treatment device according to claim 7, wherein the top of the flocculation cylinder (3) is fixedly connected with a stirring motor (9), and the output end of the stirring motor (9) penetrates through the flocculation cylinder (3) and is fixedly connected with a stirring rod (901).
10. A method for treating industrial wastewater comprising an industrial wastewater treatment apparatus according to claim 1, characterized by comprising the steps of:
1. adding wastewater and flocculant into a flocculation cylinder (3) for flocculation, then pumping the wastewater and flocculant out of the flocculation cylinder (3) into a water supply pipe (302) through a water supply pump (301), and then flowing the wastewater and flocculant from the top of a filter frame (2) onto a filter plate (402) on the outer wall of a conveyor belt (401) for filtration;
2. the rotary shaft (4) is started to drive the conveying belt (401) to rotate, the conveying belt (401) drives the filter plate (402) to rotate, the filter plate (402) at the lower part of the water outlet of the water supply pipe (302) rotates to the other side, then the rotary rod (5) is started to drive the cleaning box (6) to rotate to the upper side of the filter plate (402), the pump body (801) is started to extract cleaning liquid or air, the cleaning liquid or air is fed into the cleaning box (6) through the rotary joint (803) and the cavity (802), and then the cleaning liquid or air is sprayed out of the filter plate (402) through the flushing hole (601), the filter plate (402) is backwashed, the filter plate (402) is cleaned, and then the circulating rotation is carried out for filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681956.8A CN117602715A (en) | 2023-12-08 | 2023-12-08 | Industrial wastewater treatment device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681956.8A CN117602715A (en) | 2023-12-08 | 2023-12-08 | Industrial wastewater treatment device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117602715A true CN117602715A (en) | 2024-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311681956.8A Pending CN117602715A (en) | 2023-12-08 | 2023-12-08 | Industrial wastewater treatment device and method |
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| Country | Link |
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| CN (1) | CN117602715A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118084103A (en) * | 2024-04-10 | 2024-05-28 | 永州盛煜新材料科技有限公司 | Wastewater treatment device for kiln head cooling water of rotary kiln |
-
2023
- 2023-12-08 CN CN202311681956.8A patent/CN117602715A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118084103A (en) * | 2024-04-10 | 2024-05-28 | 永州盛煜新材料科技有限公司 | Wastewater treatment device for kiln head cooling water of rotary kiln |
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