CN212198809U - Device for treating sewage ammonia nitrogen with porous active catalytic filter material - Google Patents
Device for treating sewage ammonia nitrogen with porous active catalytic filter material Download PDFInfo
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- CN212198809U CN212198809U CN202020334620.XU CN202020334620U CN212198809U CN 212198809 U CN212198809 U CN 212198809U CN 202020334620 U CN202020334620 U CN 202020334620U CN 212198809 U CN212198809 U CN 212198809U
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Abstract
The utility model discloses a device which is provided with a porous active catalytic filter material and is used for treating sewage ammonia nitrogen, which relates to the technical field of sewage treatment equipment; the device comprises a bottom plate, a bracket, a PH adjusting component, a primary stripping tower, a secondary stripping tower, a control box and an air inlet component; the top surface of the bottom plate is provided with a bracket, the left side of the top surface of the bottom plate is provided with a PH adjusting component, and the right side of the adjusting cylinder is provided with a primary stripping tower; a second-stage stripping tower is arranged on the right side of the first-stage stripping tower, a water outlet pipe is connected to the outer ring wall on the right side of the bottom of the second-stage stripping tower body, an air inlet assembly is arranged between the first-stage stripping tower body and the second-stage stripping tower body, and a control box is fixed on the left side of the supporting rod; compared with the conventional filler structure, the filler design of the double-spiral structure increases the contact area of sewage and air, improves the removal efficiency of ammonia nitrogen, and is convenient for later cleaning and maintenance; has the advantages of simple structure, reasonable design, convenient maintenance and the like.
Description
Technical Field
The utility model relates to a sewage treatment device technical field, concretely relates to device that porous active catalytic filter material was equipped with and sewage ammonia nitrogen was handled.
Background
Waste water discharged by enterprises such as ammonia product use, ammonia production and the like generally contains ammonia nitrogen with different concentrations, and the alternative treatment methods for removing ammonia in the waste water generally comprise three physical, chemical and biological treatment methods; according to the relevant data and engineering examples at home and abroad, the practical methods for treating the ammonia nitrogen wastewater mainly comprise a chemical precipitation method, a stripping method, a chemical oxidation method, a biological method, a membrane separation method, an ion exchange method, soil irrigation and the like.
Often jointly apply to the catalytic oxidation method and blow-off method and handle high concentration ammonia nitrogen waste water, it has purification efficiency height, the flow is simple, account for advantages such as the basal area is few, the difficult point of application is that its inside all is equipped with the filler device, is blockked up by the impurity in the sewage easily, influences the effect of blowing off, and the clearance is got up very difficultly, awaits improving urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device with a reasonable design and a porous active catalytic filter material for treating sewage ammonia nitrogen, aiming at the defects and deficiencies of the prior art, through the filler design of a double-spiral structure, compared with the conventional filler structure, the device increases the contact area of sewage and air, improves the removal efficiency of ammonia nitrogen, and is convenient for later-stage cleaning and maintenance; has the advantages of simple structure, reasonable design, convenient maintenance and the like.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the device comprises a bottom plate, a bracket, a PH adjusting component, a primary stripping tower, a secondary stripping tower, a control box and an air inlet component; the top surface of the bottom plate is provided with a bracket, the left side of the top surface of the bottom plate is provided with a PH adjusting assembly, and the PH adjusting assembly consists of an adjusting cylinder, a water inlet pipe, a first lifting pump and a first adjusting valve; the adjusting cylinder is arranged on the left side of the top surface of the bottom plate, the adjusting cylinder is arranged in the support, the left side of the outer ring wall of the adjusting cylinder is connected with a water inlet pipe, the first lifting pump is arranged on the bottom plate on the front side of the adjusting cylinder, a water outlet at the bottom of the adjusting cylinder is connected with the first lifting pump through a pipeline, the pipeline is provided with the first adjusting valve, and the right side of the adjusting cylinder is provided with a first-stage stripping tower;
the primary stripping tower consists of a primary stripping tower body, a first spray header, filler, a suction filter tank and a first air inlet; the first-stage stripping tower body is arranged on a bottom plate on the right side of the adjusting cylinder, a first spray head is arranged at the upper end inside the first-stage stripping tower body, the first lifting pump is connected with the first spray head through a first connecting pipe, the right side of the outer ring wall of the first-stage stripping tower body is connected with a second lifting pump through a pipeline, the second lifting pump is arranged on the bottom plate, a second adjusting valve is arranged on the pipeline, a second-stage stripping tower is arranged on the right side of the first-stage stripping tower, and the second-stage stripping tower consists of a second-stage stripping tower body, a second spray head, a second air inlet and a water outlet pipe; the second-stage stripping tower body is arranged on a bottom plate on the right side of the first-stage stripping tower body, the upper end inside the second-stage stripping tower body is provided with a second spray header, a plurality of mounting holes are formed in the front sides of the outer ring walls of the first-stage stripping tower body and the second-stage stripping tower body, the suction filtration grooves are inserted into the mounting holes, fillers are arranged inside the suction filtration grooves, and the fillers consist of fixing plates and filler bodies; a plurality of filler main bodies are arranged between the upper fixing plate and the lower fixing plate, and the filler main bodies are arranged in a double-helix structure; the inner ring walls of the first-stage stripping tower body and the second-stage stripping tower body are both provided with zeolite plates, the zeolite plates are positioned below the suction filter tank, the first air inlet is arranged on the outer ring wall of the front side of the first-stage stripping tower body positioned above the zeolite plates, the second air inlet is arranged on the outer ring wall of the front side of the second-stage stripping tower body positioned above the zeolite plates, the second lift pump is connected with the second spray head through a second connecting pipe, the outer ring wall on the right side of the bottom of the second-stage stripping tower body is connected with a water outlet pipe, an air inlet assembly is arranged between the first-stage stripping tower body and the second-stage stripping tower body, and the air inlet assembly consists of an air blower, an air inlet pipeline and a third regulating valve; the blower is arranged on the support rod in the support and is positioned between the stripping tower body and the secondary stripping tower body; an air inlet pipeline is connected below the air blower, the left end and the right end of the air inlet pipeline are respectively connected to the first air inlet and the second air inlet, and the air inlet pipeline is connected with two third regulating valves which are opposite left and right; two branch pipes on the left side and the right side of the exhaust pipeline are respectively connected to exhaust holes on the rear sides of the upper parts of the first-stage stripping tower body and the second-stage stripping tower body, barrier films are arranged in the two branch pipes on the left side and the right side, a control box is fixed on the left side of the supporting rod, and the control box is arranged on the front side of the adjusting cylinder; the first lifting pump, the second lifting pump and the air blower are all electrically connected with an external power supply, and the first lifting pump, the second lifting pump and the air blower are all electrically connected with the control box.
Furthermore, fastening rings are sleeved on the outer ring walls of the primary stripping tower body and the secondary stripping tower body, and the fastening rings are fixed on the rear side face of the supporting rod.
Furthermore, the top of control box be equipped with the warning light, the warning light is connected with external power source, and the warning light is connected with the control box is automatically controlled.
Furthermore, an observation window is arranged on the outer ring wall of the front side of the adjusting cylinder.
Furthermore, a plurality of cushion blocks are arranged below the bottom plate.
After the structure is adopted, the beneficial effects of the utility model are that: a device that porous active catalytic filter material handled sewage ammonia nitrogen is equipped with, through catalytic oxidation method and blow off the method and jointly use to improve the filler structure in the blow off method, blow off the processing procedure at sewage, improved the area of contact of sewage with the air, improve the efficiency of getting rid of ammonia nitrogen, the double helix structure of filler has better plasticity, is difficult to corrode, and the clearance in the later stage of being convenient for is maintained.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is the utility model discloses well mounting hole and suction filtration groove's connection schematic diagram.
Fig. 5 is a schematic structural diagram of the packing of the present invention.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a schematic view of the state of the packing deformation under force in the present invention.
Description of reference numerals:
the device comprises a bottom plate 1, a support 2, a support rod 2-1, a fastening ring 2-2, a PH adjusting component 3, an adjusting cylinder 3-1, a water inlet pipe 3-2, a first lifting pump 3-3, a first adjusting valve 3-4, a first connecting pipe 3-5, a first stage stripping tower 4, a first stage stripping tower body 4-1, a first spray header 4-2, a filler 4-3, a fixing plate 4-3-1, a filler main body 4-3-2, a suction filtration tank 4-4, a first air inlet 4-5, a second lifting pump 4-6, a second adjusting valve 4-7, a second connecting pipe 4-8, a zeolite plate 4-9, an installation hole 4-10, a second stage stripping tower 5, a second stage stripping tower body 5-1, a second spray header 5-2, a second air inlet 5-3, 5-4 parts of water outlet pipe, 6 parts of control box, 6-1 parts of warning lamp, 7 parts of air inlet component, 7-1 parts of air blower, 7-2 parts of air inlet pipeline, 7-3 parts of three-number regulating valve, 8 parts of exhaust pipeline, 8-1 parts of branch pipe, 8-2 parts of barrier film, 9 parts of observation window and 10 parts of cushion block.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 7, the technical solution adopted by the present embodiment is: the device comprises a bottom plate 1, a bracket 2, a PH adjusting component 3, a primary stripping tower 4, a secondary stripping tower 5, a control box 6 and an air inlet component 7; the top surface of the bottom plate 1 is welded with a support 2, a plurality of cushion blocks 10 are arranged below the bottom plate 1, the left side of the top surface of the bottom plate 1 is provided with a PH adjusting component 3, and the PH adjusting component 3 consists of an adjusting cylinder 3-1, a water inlet pipe 3-2, a first lifting pump 3-3 and a first adjusting valve 3-4; the adjusting cylinder 3-1 is arranged on the left side of the top surface of the bottom plate 1, the adjusting cylinder 3-1 is arranged inside the support 2, an observation window 9 is arranged on the outer ring wall of the front side of the adjusting cylinder 3-1, the left side of the outer ring wall of the adjusting cylinder 3-1 is connected with a water inlet pipe 3-2, the first lifting pump 3-3 is fixed on the bottom plate 1 of the front side of the adjusting cylinder 3-1 through screws, a water outlet at the bottom of the adjusting cylinder 3-1 is connected with the first lifting pump 3-3 through a pipeline, a first adjusting valve 3-4 is arranged on the pipeline, and a first-stage stripping tower 4 is arranged on the right side of the adjusting cylinder 3-1;
the primary stripping tower 4 consists of a primary stripping tower body 4-1, a first spray header 4-2, a filler 4-3, a suction filtration tank 4-4 and a first air inlet 4-5; the first-stage stripping tower body 4-1 is arranged on a bottom plate 1 on the right side of the adjusting cylinder 3-1, a first spray header 4-2 is arranged at the upper end inside the first-stage stripping tower body 4-1, the first lift pump 3-3 is connected with the first spray header 4-2 through a first connecting pipe 3-5, the right side of the outer ring wall of the first-stage stripping tower body 4-1 is connected with a second lift pump 4-6 through a pipeline, the second lift pump 4-6 is fixed on the bottom plate 1 through screws, a second adjusting valve 4-7 is arranged on the pipeline, a second-stage stripping tower 5 is arranged on the right side of the first-stage stripping tower 4, and the second-stage stripping tower 5 consists of the second-stage stripping tower body 5-1, the second spray header 5-2, a second air inlet 5-3 and a water outlet pipe 5-4; the second-stage stripping tower body 5-1 is arranged on a bottom plate 1 on the right side of the first-stage stripping tower body 4-1, the upper end inside the second-stage stripping tower body 5-1 is provided with a second spray head 5-2, the front sides of the outer ring walls of the first-stage stripping tower body 4-1 and the second-stage stripping tower body 5-1 are respectively provided with a plurality of mounting holes 4-10, the suction filtration grooves 4-4 are inserted into the mounting holes 4-10, fillers 4-3 are arranged inside the suction filtration grooves 4-4, and the fillers 4-3 consist of fixing plates 4-3-1 and filler bodies 4-3-2; a plurality of filler main bodies 4-3-2 are arranged between the upper fixing plate 4-3-1 and the lower fixing plate 4-3-1, and the filler main bodies 4-3-2 are arranged in a double-helix structure; the support blocks of the inner ring walls of the first-stage stripping tower body 4-1 and the second-stage stripping tower body 5-1 are both provided with zeolite plates 4-9, the zeolite plates 4-9 are positioned below the leaching tank 4-4, a first air inlet 4-5 is arranged on the outer ring wall of the front side of the first-stage stripping tower body 4-1 positioned above the zeolite plates 4-9, a second air inlet 5-3 is arranged on the outer ring wall of the front side of the second-stage stripping tower body 5-1 positioned above the zeolite plates 4-9, a second lift pump 4-6 is connected with a second spray head 5-2 through a second connecting pipe 4-8, the outer ring wall of the right side of the bottom of the second-stage stripping tower body 5-1 is connected with a water outlet pipe 5-4, and an air inlet component 7 is arranged between the first-stage stripping tower body 4-1 and the second-stage stripping tower body 5-1, the air inlet assembly 7 consists of an air blower 7-1, an air inlet pipeline 7-2 and a third regulating valve 7-3; the blower 7-1 is fixed on a support rod 2-1 in the bracket 2 through a screw, and the blower 7-1 is positioned between the stripping tower body 4-1 and the secondary stripping tower body 5-1; an air inlet pipeline 7-2 is connected below the air blower 7-1, the left end and the right end of the air inlet pipeline 7-2 are respectively connected to a first air inlet 4-5 and a second air inlet 5-3, and the air inlet pipeline 7-2 is connected with two third regulating valves 7-3 which are opposite left and right; two branch pipes 8-1 on the left side and the right side of an exhaust pipeline 8 are respectively connected to exhaust holes on the rear side of the upper part of a first-stage stripping tower body 4-1 and a second-stage stripping tower body 5-1, barrier films 8-2 are respectively arranged in the two branch pipes 8-1 on the left side and the right side, fastening rings 2-2 are respectively sleeved on the outer ring walls of the first-stage stripping tower body 4-1 and the second-stage stripping tower body 5-1, and the fastening rings 2-2 are fixed on the rear side surface of a support rod 2-1 through screws; a control box 6 is fixed on the left side of the supporting rod 2-1 through a screw, the control box 6 is arranged on the front side of the adjusting cylinder 3-1, a warning lamp 6-1 is arranged at the top of the control box 6, the warning lamp 6-1 is connected with an external power supply, and the warning lamp 6-1 is electrically connected with the control box 6; the first lifting pump 3-3 (model: MA-75072), the second lifting pump 4-6 (model: MA-75072) and the blower 7-1 (model: TB150-10) are all electrically connected with an external power supply, and the first lifting pump 3-3, the second lifting pump 4-6 and the blower 7-1 are all electrically connected with the control box 6.
The working principle of the specific embodiment is as follows: firstly, ammonia nitrogen sewage is introduced into an adjusting cylinder 3-1 through a water inlet pipe 3-2, the PH value of the sewage is adjusted through a chemical reagent, the adjusted PH value of the sewage is alkaline, ammonia ions in the sewage are converted into ammonia, the ammonia ions mainly exist in a free ammonia form, then the sewage is conveyed into a first spray header 4-2 in a first-stage blow-off tower 4 through a first lifting pump 3-3, the sewage is refined and atomized through water pressure, meanwhile, an air blower 7-1 is opened, the air blower 7-1 supplies air to the bottom of the first-stage blow-off tower 4 through an air inlet pipe 7-2, air is blown in from the bottom of the first-stage blow-off tower 4, the air and the sewage are in contact on a filler 4-3, the filler main body 4-3-2 with a double-spiral structure enables the contact to be more sufficient, and gas-liquid exchange can be fully carried out, ammonia nitrogen in the sewage is conveniently blown off from the water, and the blowing efficiency is improved; the blown ammonia nitrogen enters an exhaust pipeline 8 from an exhaust hole at the upper part, and the filler main body 4-3-2 with a double-spiral structure has higher plasticity, so that the filler 4-3 is stretched up and down or twisted left and right under the action of external force (disassembly and manual force application), the double-spiral structure of the filler main body 4-3-2 can be changed, and the gap between the double-spiral structure is enlarged (as shown in figure 7), thus being convenient for cleaning suspended matters and impurities attached to the filler 4-3, and after cleaning, the filler main body 4-3-2 rebounds to restore to an initial rotating state for use; and entering a subsequent gas treatment process, wherein the sewage after stripping falls on the zeolite plates 4-9, the zeolite plates 4-9 can be used as an adsorbent for removing residual ammonia nitrogen in the sewage, and can also be used as a carrier of a catalyst for further improving the removal rate of the ammonia nitrogen, the sewage passing through the zeolite plates 4-9 enters a secondary stripping tower 5 through a secondary lift pump 4-6, the ammonia nitrogen gas enters an exhaust pipeline 8 after the sewage passes through the same treatment process as the primary stripping tower 4, and the treated sewage flows out through a water outlet pipe 5-4 for subsequent treatment.
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:
1. the barrier film 8-2 is adopted to ensure smooth gas flow, remove entrained liquid droplets and discharge clean gas;
2. the structural design of the spray headers (the first spray header 4-2 and the second spray header 5-2) is adopted, so that the spray is denser and uniform compared with the conventional spray headers, and the air stripping efficiency is improved.
3. By adopting the structural design of the filler 4-3, the contact area can be increased, the air stripping efficiency is improved, and the cleaning and maintenance in the later period are facilitated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A device provided with a porous active catalytic filter material for treating sewage ammonia nitrogen comprises a bottom plate (1), a bracket (2), a PH adjusting component (3), a primary stripping tower (4), a secondary stripping tower (5), a control box (6) and an air inlet component (7); the top surface of the bottom plate (1) is provided with a support (2), the left side of the top surface of the bottom plate (1) is provided with a PH adjusting component (3), and the PH adjusting component (3) consists of an adjusting cylinder (3-1), a water inlet pipe (3-2), a first lifting pump (3-3) and a first adjusting valve (3-4); the left side of bottom plate (1) top surface is located to regulation section of thick bamboo (3-1), and the inside of support (2) is located to regulation section of thick bamboo (3-1), the left side of adjusting the outer rampart of a section of thick bamboo (3-1) is connected with inlet tube (3-2), a elevator pump (3-3) are located on bottom plate (1) of adjusting a section of thick bamboo (3-1) front side, the delivery port of adjusting a section of thick bamboo (3-1) bottom is connected with elevator pump (3-3) through the pipeline, be equipped with an governing valve (3-4) on this pipeline, its characterized in that: the right side of the adjusting cylinder (3-1) is provided with a primary stripping tower (4);
the primary stripping tower (4) consists of a primary stripping tower body (4-1), a first spray header (4-2), a filler (4-3), a suction filter tank (4-4) and a first air inlet (4-5); the device is characterized in that the primary air stripping tower body (4-1) is arranged on a bottom plate (1) on the right side of the adjusting cylinder (3-1), a first spray head (4-2) is arranged at the upper end inside the primary air stripping tower body (4-1), the first lift pump (3-3) is connected with the first spray head (4-2) through a first connecting pipe (3-5), the right side of the outer ring wall of the primary air stripping tower body (4-1) is connected with the second lift pump (4-6) through a pipeline, the second lift pump (4-6) is arranged on the bottom plate (1), a second adjusting valve (4-7) is arranged on the pipeline, a second air stripping tower (5) is arranged on the right side of the primary air stripping tower (4), and the second air stripping tower (5) is composed of the second air stripping tower body (5-1), the second spray head (5-2), A second air inlet (5-3) and a water outlet pipe (5-4); the secondary air stripping tower body (5-1) is arranged on a bottom plate (1) on the right side of the primary air stripping tower body (4-1), the upper end inside the secondary air stripping tower body (5-1) is provided with a second spray head (5-2), the front sides of the outer ring walls of the primary air stripping tower body (4-1) and the secondary air stripping tower body (5-1) are respectively provided with a plurality of mounting holes (4-10), the suction filtration grooves (4-4) are inserted into the mounting holes (4-10), fillers (4-3) are arranged inside the suction filtration grooves (4-4), and the fillers (4-3) consist of fixing plates (4-3-1) and filler main bodies (4-3-2); a plurality of filler main bodies (4-3-2) are arranged between the upper fixing plate (4-3-1) and the lower fixing plate (4-3-1), and the filler main bodies (4-3-2) are arranged in a double-helix structure; the inner ring walls of the first-stage blow-off tower body (4-1) and the second-stage blow-off tower body (5-1) are both provided with a boiling stone plate (4-9), the boiling stone plate (4-9) is positioned below the suction filter tank (4-4), a first air inlet (4-5) is arranged on the outer ring wall at the front side of the first-stage blow-off tower body (4-1) positioned above the boiling stone plate (4-9), a second air inlet (5-3) is arranged on the outer ring wall at the front side of the second-stage blow-off tower body (5-1) positioned above the boiling stone plate (4-9), a second lift pump (4-6) is connected with a second spray head (5-2) through a second connecting pipe (4-8), and a water outlet pipe (5-4) is connected on the outer ring wall at the right side of the bottom of the second-stage blow-off tower body (5-1), an air inlet component (7) is arranged between the first-stage stripping tower body (4-1) and the second-stage stripping tower body (5-1), and the air inlet component (7) consists of an air blower (7-1), an air inlet pipeline (7-2) and a third regulating valve (7-3); the air blower (7-1) is arranged on a support rod (2-1) in the support (2), and the air blower (7-1) is positioned between the stripping tower body (4-1) and the secondary stripping tower body (5-1); an air inlet pipeline (7-2) is connected below the air blower (7-1), the left end and the right end of the air inlet pipeline (7-2) are respectively connected to a first air inlet (4-5) and a second air inlet (5-3), and the air inlet pipeline (7-2) is connected with two third regulating valves (7-3) which are opposite left and right; two branch pipes (8-1) on the left side and the right side of an exhaust pipeline (8) are respectively connected to exhaust holes on the rear side of the upper part of a first-stage stripping tower body (4-1) and a second-stage stripping tower body (5-1), barrier films (8-2) are arranged in the two branch pipes (8-1) on the left side and the right side, a control box (6) is fixed on the left side of a support rod (2-1), and the control box (6) is arranged on the front side of an adjusting cylinder (3-1); the first lifting pump (3-3), the second lifting pump (4-6) and the air blower (7-1) are all electrically connected with an external power supply, and the first lifting pump (3-3), the second lifting pump (4-6) and the air blower (7-1) are all electrically connected with the control box (6).
2. The device for treating ammonia nitrogen in sewage with the porous active catalytic filter material as claimed in claim 1, is characterized in that: the outer ring walls of the primary stripping tower body (4-1) and the secondary stripping tower body (5-1) are respectively sleeved with a fastening ring (2-2), and the fastening rings (2-2) are fixed on the rear side surface of the support rod (2-1).
3. The device for treating ammonia nitrogen in sewage with the porous active catalytic filter material as claimed in claim 1, is characterized in that: the top of the control box (6) is provided with a warning lamp (6-1), the warning lamp (6-1) is connected with an external power supply, and the warning lamp (6-1) is electrically connected with the control box (6).
4. The device for treating ammonia nitrogen in sewage with the porous active catalytic filter material as claimed in claim 1, is characterized in that: an observation window (9) is arranged on the outer ring wall of the front side of the adjusting cylinder (3-1).
5. The device for treating ammonia nitrogen in sewage with the porous active catalytic filter material as claimed in claim 1, is characterized in that: a plurality of cushion blocks (10) are arranged below the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020334620.XU CN212198809U (en) | 2020-03-17 | 2020-03-17 | Device for treating sewage ammonia nitrogen with porous active catalytic filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020334620.XU CN212198809U (en) | 2020-03-17 | 2020-03-17 | Device for treating sewage ammonia nitrogen with porous active catalytic filter material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212198809U true CN212198809U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020334620.XU Active CN212198809U (en) | 2020-03-17 | 2020-03-17 | Device for treating sewage ammonia nitrogen with porous active catalytic filter material |
Country Status (1)
| Country | Link |
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| CN (1) | CN212198809U (en) |
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2020
- 2020-03-17 CN CN202020334620.XU patent/CN212198809U/en active Active
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