CN212334751U - MSBR sewage treatment ware that energy-conserving effect is good - Google Patents
MSBR sewage treatment ware that energy-conserving effect is good Download PDFInfo
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- CN212334751U CN212334751U CN202020706676.3U CN202020706676U CN212334751U CN 212334751 U CN212334751 U CN 212334751U CN 202020706676 U CN202020706676 U CN 202020706676U CN 212334751 U CN212334751 U CN 212334751U
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Abstract
The utility model discloses a MSBR sewage processor with good energy-saving effect, which comprises a pre-anoxic tank, wherein one side of the pre-anoxic tank is provided with a sludge concentration tank, one side of the sludge concentration tank is provided with an anaerobic tank, and one side of the anaerobic tank is provided with an anoxic tank; one side of the anoxic tank is provided with a main aeration tank; an MBR membrane bioreactor is arranged in the main aeration tank; the anaerobic tank is connected with an external sewage input pipeline; sequencing batch tanks are arranged at two ends of the main aeration tank and comprise a first sequencing batch tank and a second sequencing batch tank; the first sequencing batch pool and the second sequencing batch pool are both connected with the pre-anoxic pool through an air stripping reflux device. The device utilizes the redundant air quantity of the fan equipment in the sewage treatment system to supply air, carries out air stripping reflux on the reflux of the mixed liquid, and adopts pneumatic stirring to the stirrer, thereby solving the problems that the fault is easily caused by frequent starting and stopping of a reflux pump, the energy consumption is high, and the energy conservation and emission reduction are not facilitated in the prior art; the method has the characteristics of low energy consumption, environmental protection, energy conservation, low cost and convenience for transformation of the existing equipment.
Description
Technical Field
The utility model belongs to the sewage treatment device field, in particular to an energy-conserving effectual MSBR sewage treatment ware.
Background
In the current sewage treatment equipment, MSBR technical equipment is more and more widely adopted; MSBR does not need primary sedimentation tank and secondary sedimentation tank, comprises three main parts: aeration grid and two alternate sequencing batch treatment grids. The main aeration grids keep continuous aeration during the whole operation period, and the two sequencing batch treatment grids are alternately used as SBR and a clarification tank respectively during each half period. Mixed liquid is continuously pumped into the front end of the device at the water inlet and aeration stages of the SBR pool, and is mixed with raw water to generate denitrification reaction for denitrification and supplement the sludge concentration at the front end, so that the impact load resistance of the system is improved. Because two SBR pools run alternately (each stage runs in a staggered mode), the mixed liquid reflux is carried out by a pump in the traditional process, the mixed liquid reflux pump is very easy to damage in the long-term running and frequent starting and stopping processes, and the electricity consumption and the daily maintenance cost of the reflux pump in the long-term running are high. And a stirring device, a reflux device and the like in the existing MSBR equipment need a large amount of power supply consumption, and the energy consumption is higher.
Considering that the fans are needed to supply aeration air sources in the sewage treatment equipment, the maximum amount is usually considered when the fans are selected, so that the fans are always left for air supply in actual use; even some fan equipment does not have the frequency conversion capability, or because sewage treatment capacity is too small, the air supply capacity is still too large when the fan is at the lowest frequency, and redundant air supply is discharged to the air, so that energy waste is caused. Therefore, the air-lift type reflux and pneumatic stirring device is selected by considering the use of a fan system of a sewage treatment plant, and the air weir is used as an automatic drainage device, so that the self-contained air source is used, and the redundant energy consumption is not needed.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a MSBR sewage treatment device with good energy-saving effect, which utilizes the redundant wind quantity of the fan equipment in the sewage treatment system to supply air, carries out air stripping reflux on the reflux of the mixed liquid and adopts pneumatic stirring for a stirrer, thereby solving the problems that the fault is easily caused by frequent starting and stopping of a reflux pump, the energy consumption is high and the MSBR sewage treatment device is not beneficial to energy conservation and emission reduction in the prior art; the method has the characteristics of low energy consumption, environmental protection, energy conservation, low cost and convenience for transformation of the existing equipment.
In order to realize the above design, the utility model adopts the following technical scheme: an MSBR sewage processor with good energy-saving effect comprises a pre-anoxic tank, wherein a sludge concentration tank is arranged on one side of the pre-anoxic tank, an anaerobic tank is arranged on one side of the sludge concentration tank, and an anoxic tank is arranged on one side of the anaerobic tank; one side of the anoxic tank is provided with a main aeration tank; an MBR membrane bioreactor is arranged in the main aeration tank; the anaerobic tank is connected with an external sewage input pipeline; sequencing batch tanks are arranged at two ends of the main aeration tank and comprise a first sequencing batch tank and a second sequencing batch tank; the first sequencing batch pool and the second sequencing batch pool are both connected with the pre-anoxic pool through an air stripping reflux device.
The upper part of the sludge concentration tank is provided with a conveying pipeline connected with the main aeration tank; the lower part is communicated with the anaerobic tank through a sludge conveying pipe.
The bottom of the main aeration tank is paved with a main aeration pipe, the surface of the main aeration pipe is connected with a plurality of aeration branch pipes, and the surfaces of the aeration branch pipes are provided with air outlets.
The main aeration pipe is connected with an air supply main pipe of the fan equipment; the air supply main pipe is also connected with an air supply branch pipe consisting of a first air supply branch pipe and a second air supply branch pipe; one end of the first air supply branch pipe extends into the upper part of the liquid level in the first sequencing batch pond; the second air supply branch pipe extends into the upper part of the liquid level in the second sequential batch tank.
The gas stripping reflux device comprises a gas stripping pipe connected with the gas feeding branch pipe, and the gas stripping pipe is connected with the reflux pipe through a flange; the gas stripping pipe is provided with a first electric valve.
The air supply branch pipe is also connected with a pneumatic stirring device through an air pipe, and a second electric valve is arranged at the joint of the pneumatic stirring device and the air supply branch pipe.
The air supply branch pipe is also connected with a secondary aeration pipe, and the surface of the secondary aeration pipe is provided with a plurality of holes; the other end of the secondary aeration pipe is arranged below the liquid level in parallel; the secondary aeration pipe is provided with a third electric valve.
The gas stripping reflux device, the pneumatic stirring device and the secondary aeration pipe are all arranged in the sequencing batch pond.
A mixed liquid inlet is formed in the bottom of the surface of one side of the sequencing batch pond; a sludge groove is laid at the bottom of the sequencing batch tank, and the upper surface of the sludge groove is connected with a pull ring for lifting; the upper surface of the sludge tank is provided with a filter plate, and the upper end of the filter plate inclines to one side of the mixed liquid inlet and forms an angle of 30-45 degrees with the vertical direction.
And the top of the surface of one side, opposite to the mixed liquid inlet, of the sequencing batch tank is provided with an air weir, and the air weir is connected with the air supply branch pipe.
An MSBR sewage processor with good energy-saving effect comprises a pre-anoxic tank, wherein a sludge concentration tank is arranged on one side of the pre-anoxic tank, an anaerobic tank is arranged on one side of the sludge concentration tank, and an anoxic tank is arranged on one side of the anaerobic tank; one side of the anoxic tank is provided with a main aeration tank; an MBR membrane bioreactor is arranged in the main aeration tank; the anaerobic tank is connected with an external sewage input pipeline; sequencing batch tanks are arranged at two ends of the main aeration tank and comprise a first sequencing batch tank and a second sequencing batch tank; the first sequencing batch pool and the second sequencing batch pool are both connected with the pre-anoxic pool through an air stripping reflux device. The device utilizes the redundant air quantity of the fan equipment in the sewage treatment system to supply air, carries out air stripping reflux on the reflux of the mixed liquid, and adopts pneumatic stirring to the stirrer, thereby solving the problems that the fault is easily caused by frequent starting and stopping of a reflux pump, the energy consumption is high, and the energy conservation and emission reduction are not facilitated in the prior art; the method has the characteristics of low energy consumption, environmental protection, energy conservation, low cost and convenience for transformation of the existing equipment.
In a preferred scheme, a conveying pipeline is arranged at the upper part of the sludge concentration tank and is connected with a main aeration tank; the lower part is communicated with the anaerobic tank through a sludge conveying pipe.
In a preferred scheme, a main aeration pipe is laid at the bottom of the main aeration tank, the surface of the main aeration pipe is connected with a plurality of aeration branch pipes, and the surfaces of the aeration branch pipes are provided with air outlets. Simple structure, during the use, the aeration branch pipe design of distributing type does benefit to oxygen-containing air and evenly spreads in sewage, improves aerobic reaction efficiency.
In a preferred scheme, a main aeration pipe is connected with an air supply main pipe of the fan device; the air supply main pipe is also connected with an air supply branch pipe consisting of a first air supply branch pipe and a second air supply branch pipe; one end of the first air supply branch pipe extends into the upper part of the liquid level in the first sequencing batch pond; the second air supply branch pipe extends into the upper part of the liquid level in the second sequential batch tank. Simple structure, during the use, the branch pipe of supplying air is as the power supply of each equipment in the preface batch pond and provide power for it, take fan equipment the unnecessary amount of wind can, energy-concerving and environment-protective need not to add the energy consumption in addition.
In a preferred scheme, the gas stripping reflux device comprises a gas stripping pipe connected with the gas feeding branch pipe, and the gas stripping pipe is connected with the reflux pipe through a flange; the gas stripping pipe is provided with a first electric valve. The structure is simple, when the air-stripping reflux device is used, compressed air is pumped into the reflux pipe by the air-stripping reflux device, so that a low-density gas-liquid mixture area is formed in the reflux pipe, and the mixed liquid below is driven to rise to finish the air-stripping process; the first electric valve is used for adjusting the air inflow so as to control the backflow amount.
In a preferable scheme, the air supply branch pipe is further connected with a pneumatic stirring device through an air pipe, and a second electric valve is arranged at the connection position of the pneumatic stirring device and the air supply branch pipe. Simple structure, during the use, pneumatic agitating unit passes through second electric valve regulation rotational speed, control stirring dynamics.
In a preferred scheme, the air supply branch pipe is also connected with a secondary aeration pipe, and the surface of the secondary aeration pipe is provided with a plurality of holes; the other end of the secondary aeration pipe is arranged below the liquid level in parallel; the secondary aeration pipe is provided with a third electric valve. Simple structure, during the use, the time aeration pipe is used for providing the oxygen-containing air when the sequencing batch pond carries out aerobic aeration stage.
In a preferred scheme, the gas stripping reflux device, the pneumatic stirring device and the secondary aeration pipe are arranged in the sequencing batch pond. In a preferred scheme, a mixed liquid inlet is formed in the bottom of the surface of one side of the sequencing batch pond; a sludge groove is laid at the bottom of the sequencing batch tank, and the upper surface of the sludge groove is connected with a pull ring for lifting; the upper surface of the sludge tank is provided with a filter plate, and the upper end of the filter plate inclines to one side of the mixed liquid inlet and forms an angle of 30-45 degrees with the vertical direction. The structure is simple, when in use, the sludge tank is used for receiving settled sludge, and the pull ring can be matched with external hoisting equipment to hoist and recycle the sludge in the tank; the filter plate is used for carrying out sludge-water separation to a certain degree on the inflowing mixed liquid.
In a preferred scheme, an air weir is arranged at the top of one side surface of the sequencing batch pond opposite to the mixed liquor inlet, and the air weir is connected with the air feeding branch pipe. The structure is simple, and when the air weir is used, the air feeding branch pipe is also used as a power source.
An MSBR sewage processor with good energy-saving effect comprises a pre-anoxic tank, wherein a sludge concentration tank is arranged on one side of the pre-anoxic tank, an anaerobic tank is arranged on one side of the sludge concentration tank, and an anoxic tank is arranged on one side of the anaerobic tank; one side of the anoxic tank is provided with a main aeration tank; an MBR membrane bioreactor is arranged in the main aeration tank; the anaerobic tank is connected with an external sewage input pipeline; sequencing batch tanks are arranged at two ends of the main aeration tank and comprise a first sequencing batch tank and a second sequencing batch tank; the first sequencing batch pool and the second sequencing batch pool are both connected with the pre-anoxic pool through an air stripping reflux device. The device utilizes the redundant air quantity of the fan equipment in the sewage treatment system to supply air, carries out air stripping reflux on the reflux of the mixed liquid, and adopts pneumatic stirring to the stirrer, thereby solving the problems that the fault is easily caused by frequent starting and stopping of a reflux pump, the energy consumption is high, and the energy conservation and emission reduction are not facilitated in the prior art; the method has the characteristics of low energy consumption, environmental protection, energy conservation, low cost and convenience for transformation of the existing equipment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the structure diagram of the device connection in the middle sequencing batch pond of the present invention.
Fig. 3 is a schematic structural diagram of the middle sequencing batch tank of the present invention.
The reference numbers in the figures are: the anaerobic tank comprises a pre-anoxic tank 1, a sludge concentration tank 2, an anaerobic tank 3, an anoxic tank 4, a main aeration tank 5, a main aeration pipe 51, a branch aeration pipe 52, an air outlet 53, a first sequencing batch tank 61, a second sequencing batch tank 62, a sludge tank 63, a filter plate 64, a mixed liquid inlet 65, an air weir 66, a pull ring 67, an air stripping reflux device 7, a fan device 8, an air feeding main pipe 81, a first air feeding branch pipe 82, a second air feeding branch pipe 83, an air stripping pipe 71, a reflux pipe 72, a pneumatic stirring device 73, a secondary aeration pipe 74, a first electric valve 91, a second electric valve 92 and a third electric valve 93.
Detailed Description
As shown in fig. 1 to 3, an MSBR sewage treatment apparatus with a good energy saving effect comprises a pre-anoxic tank 41, a sludge concentration tank 2 is arranged on one side of the pre-anoxic tank 41, an anaerobic tank 3 is arranged on one side of the sludge concentration tank 2, and an anoxic tank 4 is arranged on one side of the anaerobic tank 3; a main aeration tank 5 is arranged on one side of the anoxic tank 4; an MBR membrane bioreactor is arranged in the main aeration tank 5; the anaerobic tank 3 is connected with an external sewage input pipeline; sequencing batch tanks are arranged at two ends of the main aeration tank 5 and comprise a first sequencing batch tank 61 and a second sequencing batch tank 62; the first sequencing batch tank 61 and the second sequencing batch tank 62 are connected with the pre-anoxic tank 41 through the air stripping reflux device 7. The device utilizes the redundant air quantity of the fan device 8 in the sewage treatment system to supply air, carries out air stripping reflux on the reflux of the mixed liquid, and adopts pneumatic stirring to the stirrer, thereby solving the problems that the fault is easily caused by frequent starting and stopping of a reflux pump, the energy consumption is high, and the energy conservation and emission reduction are not facilitated in the prior art; the method has the characteristics of low energy consumption, environmental protection, energy conservation, low cost and convenience for transformation of the existing equipment.
In the preferred scheme, a conveying pipeline is arranged at the upper part of the sludge concentration tank 2 and is connected with a main aeration tank 5; the lower part is communicated with the anaerobic tank 3 through a sludge conveying pipe.
In a preferable scheme, a main aeration pipe 51 is laid at the bottom of the main aeration tank 5, a plurality of aeration branch pipes 52 are connected to the surface of the main aeration pipe 51, and air outlets 53 are formed in the surfaces of the aeration branch pipes 52. Simple structure, when in use, the design of the distributed aeration branch pipes 52 is beneficial to the oxygen-containing air to be uniformly dispersed in the sewage, and the aerobic reaction efficiency is improved.
In a preferred embodiment, the main aeration pipe 51 is connected to the air supply main pipe 81 of the fan apparatus 8; the main air supply pipe 81 is also connected with an air supply branch pipe composed of a first air supply branch pipe 82 and a second air supply branch pipe 83; one end of the first air supply branch pipe 82 extends into the upper part of the liquid level in the first sequencing batch pond 61; a second feed manifold 83 extends above the liquid level in the second sequencing batch tank 62. Simple structure, during the use, the branch pipe of supplying air is as the power supply of each equipment in the preface batch pond and provide power for it, take fan equipment 8 the unnecessary amount of wind can, energy-concerving and environment-protective need not to add the energy consumption in addition.
In a preferred scheme, the gas stripping reflux device 7 comprises a gas stripping pipe 71 connected with a gas feeding branch pipe, and the gas stripping pipe 71 is connected with a reflux pipe 72 through a flange; the first electric valve 91 is provided in the stripper tube 71. The structure is simple, when in use, the air stripping reflux device 7 pumps compressed air into the reflux pipe 72 to form a low-density gas-liquid mixture area in the reflux pipe 72, so as to drive the mixed liquid below to rise to finish the air stripping process; the first electric valve 91 is used to adjust the intake air amount to control the return air amount.
In a preferred embodiment, the air supply branch pipe is further connected with a pneumatic stirring device 73 through an air pipe, and a second electric valve 92 is arranged at the connection part of the pneumatic stirring device 73 and the air supply branch pipe. Simple structure, during the use, pneumatic agitating unit 73 passes through second motorised valve 92 and adjusts the rotational speed, controls the stirring dynamics.
In a preferred scheme, the air supply branch pipe is also connected with a secondary aeration pipe 74, and the surface of the secondary aeration pipe 74 is provided with a plurality of holes; the other end of the secondary aeration pipe 74 is arranged below the liquid level in parallel; the sub-aeration pipe 74 is provided with a third electric valve 93. The structure is simple, and when in use, the secondary aeration pipe 74 is used for providing oxygen-containing air when the sequencing batch reactor is in an aerobic aeration stage.
In a preferred scheme, the air stripping reflux device 7, the pneumatic stirring device 73 and the secondary aeration pipe 74 are arranged in the sequencing batch pond. In the preferred scheme, a mixed liquid inlet 65 is formed in the bottom of the surface of one side of the sequencing batch pond; a sludge groove 63 is laid at the bottom of the sequencing batch tank, and the upper surface of the sludge groove 63 is connected with a pull ring 67 for lifting; the upper surface of the sludge tank 63 is provided with a filter plate 64, and the upper end of the filter plate 64 inclines to one side of the mixed liquid inlet 65 and forms an angle of 30-45 degrees with the vertical direction. The structure is simple, when the sludge tank is used, the sludge tank 63 is used for receiving settled sludge, and the pull ring 67 can be matched with external hoisting equipment to hoist and recover the sludge in the tank; the filter sheet 64 is used to separate sludge and water of the inflowing mixed liquid to some extent.
In a preferred scheme, an air weir 66 is arranged on the top of the side surface of the sequencing batch pond opposite to the mixed liquor inlet 65, and the air weir 66 is connected with the air feeding branch pipe. The structure is simple, and when in use, the air weir 66 is also powered by the air supply branch pipe.
The MSBR sewage treatment device with the good energy-saving effect has the following working principle:
the raw sewage enters an anaerobic tank 3 for anaerobic treatment, and after microbial phosphorus release, the mixed solution enters a main aeration tank 5; continuously supplying oxygen to the main aeration tank 5, and in an aerobic environment, excessively absorbing phosphorus by microorganisms in the MBR membrane bioreactor to finish organic matter degradation and ammonia nitrogen nitration; then nitrified liquid flows to a first sequencing batch pond 61 and a second sequencing batch pond 62 in a self-flowing mode; at this time, the first sequencing batch pond 61 is set as a reaction pond, and the second sequencing batch pond 62 is set as a sedimentation pond; the first sequencing batch tank 61 is firstly set to be in an anoxic stirring state, air is supplied through the air supply branch pipe, the pneumatic stirring device 73 starts to operate, and the inflowing mixed liquid is subjected to anoxic stirring; after the anoxic stirring stage is completed, opening a third electric valve 93 to supply air to the first sequencing batch tank 61, and performing an aerobic aeration stage; denitrification is completed in the two processes; in the two processes, the first electric valve 91 is opened for continuous gas stripping reflux, and the mixed liquor in the first sequencing batch pond 61 is sent to a pre-anoxic zone for further denitrification; then flows into a sludge concentration area for sludge-water separation; re-entering the beginning main loop process; at this time, in the second sequencing batch tank 62, the inflowing mixed liquor rises to an air weir 66 at the top from the bottom through a filter plate 64, and the mixed liquor is filtered by the filter plate 64 and a sludge suspension layer in a sludge tank 63 and then is discharged from the air weir 66; after the aerobic aeration of the first sequencing batch pond 61 is finished, the two sequencing batch ponds are alternated, the second sequencing batch pond 62 is used as a reaction pond for carrying out an anoxic stirring stage, and the first sequencing batch pond 61 is settled, so that the uninterrupted treatment process is realized.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (10)
1. The utility model provides an effectual MSBR sewage treatment ware of energy-conservation which characterized in that: the anaerobic sludge anaerobic reactor comprises a pre-anoxic tank (1), wherein a sludge concentration tank (2) is arranged on one side of the pre-anoxic tank (1), an anaerobic tank (3) is arranged on one side of the sludge concentration tank (2), and an anoxic tank (4) is arranged on one side of the anaerobic tank (3); a main aeration tank (5) is arranged on one side of the anoxic tank (4); an MBR membrane bioreactor is arranged in the main aeration tank; the anaerobic tank (3) is connected with an external sewage input pipeline; sequencing batch tanks are arranged at two ends of the main aeration tank (5) and comprise a first sequencing batch tank (61) and a second sequencing batch tank (62); the first sequencing batch tank (61) and the second sequencing batch tank (62) are connected with the pre-anoxic tank (1) through a gas stripping reflux device (7).
2. The MSBR sewage processor with good energy-saving effect of claim 1, wherein: the upper part of the sludge concentration tank (2) is provided with a conveying pipeline connected with a main aeration tank (5); the lower part is communicated with the anaerobic tank (3) through a sludge conveying pipe.
3. The MSBR sewage processor with good energy-saving effect of claim 1, wherein: the bottom of the main aeration tank (5) is paved with a main aeration pipe (51), the surface of the main aeration pipe (51) is connected with a plurality of aeration branch pipes (52), and the surface of each aeration branch pipe (52) is provided with an air outlet (53).
4. The MSBR sewage processor with good energy-saving effect of claim 3, wherein: the main aeration pipe (51) is connected with an air supply main pipe (81) of the fan device (8); the main air supply pipe (81) is also connected with an air supply branch pipe consisting of a first air supply branch pipe (82) and a second air supply branch pipe (83); one end of the first air supply branch pipe (82) extends into the upper part of the liquid level in the first sequencing batch pond (61); a second air supply branch (83) extends above the liquid level in the second sequencing batch pond (62).
5. The MSBR sewage processor with good energy-saving effect of claim 1, wherein: the gas stripping reflux device (7) comprises a gas stripping pipe (71) connected with the gas feeding branch pipe, and the gas stripping pipe (71) is connected with the reflux pipe (72) through a flange; the gas stripping pipe (71) is provided with a first electric valve (91).
6. The MSBR sewage processor with good energy saving effect of claim 4, wherein: the air supply branch pipe is also connected with a pneumatic stirring device (73) through an air pipe, and a second electric valve (92) is arranged at the joint of the pneumatic stirring device (73) and the air supply branch pipe.
7. The MSBR sewage processor with good energy saving effect of claim 4, wherein: the air supply branch pipe is also connected with a secondary aeration pipe (74), and the surface of the secondary aeration pipe (74) is provided with a plurality of holes; the other end of the secondary aeration pipe (74) is arranged below the liquid level in parallel; the secondary aeration pipe (74) is provided with a third electric valve (93).
8. The MSBR sewage processor with good energy-saving effect of claim 7, wherein: the air stripping reflux device (7), the pneumatic stirring device (73) and the secondary aeration pipe (74) are arranged in the sequencing batch pond.
9. The MSBR sewage processor with good energy-saving effect of claim 1, wherein: a mixed liquid inlet (65) is formed in the bottom of the surface of one side of the sequencing batch tank; a sludge groove (63) is laid at the bottom of the sequencing batch tank, and the upper surface of the sludge groove (63) is connected with a pull ring (67) for hoisting; the upper surface of the sludge tank (63) is provided with a filter plate (64), and the upper end of the filter plate (64) inclines to one side of the mixed liquid inlet (65) and forms an angle of 30-45 degrees with the vertical direction.
10. The MSBR sewage processor with good energy-saving effect of claim 1, wherein: an air weir (66) is arranged on the top of the surface of one side of the sequencing batch pond opposite to the mixed liquor inlet (65), and the air weir (66) is connected with the air feeding branch pipe.
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| CN113582342A (en) * | 2021-08-25 | 2021-11-02 | 安徽理工大学环境友好材料与职业健康研究院(芜湖) | Emergency treatment device for sudden urban landscape water pollution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113582342A (en) * | 2021-08-25 | 2021-11-02 | 安徽理工大学环境友好材料与职业健康研究院(芜湖) | Emergency treatment device for sudden urban landscape water pollution |
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