CN115536163A - Medical wastewater treatment device and method - Google Patents

Medical wastewater treatment device and method Download PDF

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Publication number
CN115536163A
CN115536163A CN202211163441.4A CN202211163441A CN115536163A CN 115536163 A CN115536163 A CN 115536163A CN 202211163441 A CN202211163441 A CN 202211163441A CN 115536163 A CN115536163 A CN 115536163A
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CN
China
Prior art keywords
aeration tank
pipe
wastewater treatment
medical wastewater
membrane
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Pending
Application number
CN202211163441.4A
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Chinese (zh)
Inventor
杜晓江
王腾
谭丹枫
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Wuhan Huakang Century Medical Co ltd
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Wuhan Huakang Century Medical Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Huakang Century Medical Co ltd filed Critical Wuhan Huakang Century Medical Co ltd
Priority to CN202211163441.4A priority Critical patent/CN115536163A/en
Publication of CN115536163A publication Critical patent/CN115536163A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00Aeration of stretches of water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/003Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention relates to a medical wastewater treatment device and a method, which comprises an aeration tank, wherein a plurality of self-made floating bridges are arranged on the upper side of the aeration tank at equal intervals, the floating bridges float on the upper side of the aeration tank, two ends of the floating bridges are fixed at two sides of the aeration tank, an impermeable membrane covers the upper side of the aeration tank, the impermeable membrane is positioned on the upper side of the floating bridge, a ring beam is arranged on the outer side of the aeration tank, the edge part of the impermeable membrane is fixed on the ring beam and the hardened ground, a plurality of sampling ports are arranged on the impermeable membrane, and a main exhaust pipe is connected in the aeration tank. According to the medical wastewater treatment device, the plurality of floating bridges are arranged on the surface of the aeration tank, so that firm installation of the film is ensured, a large amount of rainwater on the film is not drained timely in rainy seasons, and powerful support can be provided for the film by the supporting function of the floating bridges; the personnel can conveniently walk back and forth to drain the accumulated water on the membrane; the sampling can be carried out at different positions in the middle of the pool, and the data is more perfect and accurate.

Description

Medical wastewater treatment device and method
Technical Field
The invention relates to the technical field of medical wastewater treatment, in particular to a medical wastewater treatment device and method.
Background
The medical wastewater is mainly sewage discharged from a diagnosis and treatment room, a laboratory, a ward, a laundry, an X-ray photography room, an operating room and the like of a hospital, and the source and the components of the sewage are very complex. The hospital waste water contains a large amount of pathogenic bacteria, viruses and chemical agents and has the characteristics of space pollution, acute infection and latent infection.
The medical wastewater usually needs to be biochemically treated in an aeration tank, the traditional mode of the newly-built capping scheme of the medical wastewater aeration tank is concrete, the traditional mode of modifying the hospital aeration tank capping is steel structure and reverse hanging membrane, the cost is high, the installation period is long, the process is complex, and the aeration tank adopting the suspension chain aeration oxygenation mode is inconvenient to directly coat a membrane due to the floating pipe on the water surface; in addition, the membrane has larger load in rainy and snowy weather, and the floating pipe under the membrane is easy to crush; in addition, the sampling of sewage in the conventional medical wastewater aeration tank is difficult due to the film coating.
Therefore, a medical wastewater treatment device and method are needed to solve the above technical problems.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a medical wastewater treatment device and a medical wastewater treatment method.
The technical scheme for solving the technical problems is as follows: the utility model provides a medical wastewater treatment device, includes the aeration tank, the upside equidistance of aeration tank is provided with many pontoon bridges, the pontoon bridge floats the upside of aeration tank, the both ends of pontoon bridge are fixed the both sides position department of aeration tank, the upside cover of aeration tank has the prevention of seepage membrane, it is located to prevent seepage membrane the pontoon bridge upside, aeration tank's aeration branch pipe one side is provided with the collar tie beam, it is provided with a plurality of sample connection on the prevention of seepage membrane, the aeration tank in-connection has main blast pipe.
Preferably, in the medical wastewater treatment apparatus, a plurality of annular wall gas collectors are arranged in the aeration tank, the annular wall gas collectors are all communicated with the main exhaust pipe, and the annular wall gas collectors are fixed on two sides of the floating bridge.
Preferably, in the medical wastewater treatment device, a plurality of air holes are arranged on the annular wall gas collecting pipe, and the air holes are uniformly arranged.
Preferably, in the medical wastewater treatment apparatus, a plurality of groups of galvanized flat irons are arranged on the upper side of the ring beam, and the edge of the impermeable membrane is fixed on the hardened ground and the ring beam through a plurality of expansion bolts and the galvanized flat irons.
Preferably, in the medical wastewater treatment apparatus, a blower is installed on the main exhaust pipe, and the blower is located outside the aeration tank.
Preferably, the method for setting the sampling port of the medical wastewater treatment device comprises the following steps;
s1, manufacturing a horn-shaped pipe sleeve made of an impermeable membrane material according to the diameter of a PE pipe, and performing a leakage test to ensure that the pipe sleeve is watertight;
s2, sleeving the pipe sleeve into the PE pipe, adjusting the position of the pipe sleeve, connecting the end with the small diameter with the PE pipe pipeline, connecting the end with the large diameter with an anti-seepage film covering the upper side of the aeration tank, roughening, temporarily fixing by using a hot air welding gun, and finally welding by using a single-rail welding gun, wherein when the pipe sleeve and the PE pipe are installed and welded, a buffer length is reserved to avoid weld joint tearing caused by thermal expansion and cold contraction or pipeline deviation;
and S3, detecting the hollow part of the two-layer pipe sleeve by using a pressurizing method after welding, wherein the pressure is stabilized at 0.25Mpa for 3 minutes, and the pipe sleeve is qualified in welding and is subjected to double-layer protection.
The beneficial effects of the invention are: according to the medical wastewater treatment device, the plurality of self-made floating bridges are arranged on the surface of the aeration tank, so that firm installation of the coating is ensured, a large amount of rainwater on the membrane is not drained timely in rainy seasons, powerful support can be provided for the coating by the supporting function of the floating bridges, and the risk that a floating pipe under the membrane is crushed is avoided; the personnel can walk back and forth to drain the accumulated water on the membrane; the sampling can be carried out at different positions in the middle of the pool, so that the data is more perfect and accurate; the scheme of adopting the impermeable membrane to cover has low cost, short construction period and long service life.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the fixing structure of the impermeable membrane and the ring beam;
FIG. 4 is a perspective view of the annular wall manifold;
FIG. 5 is a plan view of the annular wall manifold;
fig. 6 is a schematic view of the structure of the pipe sleeve.
In the drawings, the components represented by the respective reference numerals are listed below:
1. aeration tank, 2, floating bridge, 3, ring beam, 4, main exhaust pipe, 5, water inlet pipe, 6, fan, 7, expansion bolt, 8, anti-seepage film, 9, galvanized flat iron, 10, annular wall gas collecting pipe, 11, air hole, 12 and pipe sleeve.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in figures 1, 2 and 3, the medical wastewater treatment device comprises an aeration tank 1, a plurality of floating bridges 2 which are arranged in parallel are equidistantly arranged on the upper side of the aeration tank 1, and two ends of each floating bridge 2 are fixed at two sides of the aeration tank 1. The floating bridge 2 is welded into a sealing sleeve by using a black film, a plurality of foam boards and bamboo boards are filled in the sealing sleeve, and the bamboo boards are placed on the upper sides of the foam boards. The floating bridge 2 floats on the upper side of the aeration tank 1. The upside of aeration tank 1 covers has the prevention of seepage membrane 8 of HDPE material, prevents that seepage membrane 8 is located pontoon bridge 2 upside.
Because this aeration tank adopts the aeration of suspension chain to oxygenate the mode, many aeration branch pipes let in the aeration tank from aeration tank both sides, for guaranteeing to prevent the sealed effect of osmosis membrane 8, set up the collar tie-beam that the arch is in ground in aeration tank 1 outlying aeration branch pipe one side, the collar tie-beam sets up along the aeration tank limit for pass the aeration branch pipe, sealing connection between aeration branch pipe and the collar tie-beam, the collar tie-beam top is level and smooth, be used for preventing osmosis membrane 8 limit portion pressure above that, thereby solved and prevented osmosis membrane 8's sealed problem of covering. The branch pipe valve is arranged on the aeration branch pipe and arranged outside the membrane, so that the aeration air quantity is conveniently adjusted. The concrete at the periphery of the aeration tank without the aeration branch pipes is hardened, the edge part of the impermeable membrane 8 is fixed on the ring beam 3, and the other sides are fixed on the concrete ground. Prevention of seepage membrane limit portion is through the centre gripping of the two-layer galvanized flat iron 9 that set up of multiunit to run through galvanized flat iron 9 through a plurality of expansion bolts 7 and be fixed in sclerosis terrace and circle roof beam 3 on, expansion bolts 7's fixed spacing is 60cm.
The anti-seepage film 8 is formed by splicing a plurality of small anti-seepage films, and the splicing and sealing process comprises the following specific steps that firstly, the overlapping width of a bottom layer film and a middle layer film between two adjacent anti-seepage films is 10 +/-2 cm, a double-track welding machine is adopted for welding, after welding is finished, redundant films on the outer side of a tail end welding line are cut off, the cutting length is 30cm, and the welding with an upper layer film is facilitated; secondly, overlapping widths of the upper layer film, the lower layer film and the middle layer film are 10 +/-2 cm, a double-track welding machine is adopted for welding, after welding is finished, redundant films on the outer side of a welding line are cut off, and the cutting length is 40cm; and thirdly, performing double-layer reinforcement on the welding seam intersection, performing T-shaped reinforcement on the first layer, wherein the extension length of each edge is 10cm, and the welding seam at the tail end is pressed on the original double-track welding seam.
When the anti-seepage film 8 is damaged, repairing is needed, and the anti-seepage film repairing welding process is described as follows:
1. the small damaged hole should be repaired by extrusion, and if the damaged hole is larger than 6mm, the hole should be repaired by patching.
2. The surface of the geomembrane needing patching is cleaned in advance, repaired and polished.
3. The patch should be of a material and thickness consistent with the geomembrane, cut into a circular or oval shape, extend at least 300mm to the damaged geomembrane, and have edges smoothed by a grinder before being placed on the geomembrane, leaving all surfaces clean and dry during repair.
4. Welding: the patch is bonded and fixed, after the periphery of the patch is polished, a circle of copper wires with the diameter of 0.3-0.5mm are embedded at the edge, the embedded copper wires are not exposed any more, the copper wires are completely embedded in the extrusion welding line by adopting a single-rail welding machine, the exposed copper wires are prevented from being corroded in sewage, and a picture is required to be taken for retaining in the later period when the embedded key wires are not exposed.
5. Construction Fang Zijian Jun harvest: each patch needs to be subjected to electric spark detection, and whether the result is qualified needs to be marked after the detection.
6. And (4) checking and accepting the item part: and checking whether the black film construction units meet the patch requirements one by one, performing 30% sampling inspection, marking, photographing and archiving, wherein the key areas are four-corner positions and overflow pipe sleeves.
7. Quality inspection and acceptance: randomly spot check items including accepted and not checked patches, and focus on checking four corners and overflow pipe sleeves.
The impermeable membrane 8 is provided with a plurality of sampling ports for sampling from the aeration tank 1. Specifically, the sampling opening is opened by a hole digger at the designated position of the floating bridge 2, the floating bridge extends downwards for a certain depth and is fixed by a PE pipe, so that the sampling is convenient.
A main exhaust pipe 4 is connected in the aeration tank 1. A plurality of annular wall gas collecting pipes 10 are arranged in the aeration tank 1, the annular wall gas collecting pipes 10 are communicated with the main exhaust pipe 4, and the annular wall gas collecting pipes 10 are fixed on two sides of the floating bridge 2. The main exhaust pipe 4 is provided with a fan 6, and the fan 6 is positioned outside the aeration tank 1. The installation height of the fan 6 can be adjusted according to the site, the base of the fan is made of 40 x 3mm carbon steel angle iron, the bottom of the base is fixed by expansion bolts, and the two ends of the fan connected with the pipeline need to be provided with flexible connections, thereby reducing the influence of the vibration of the fan 6 on the air suction pipeline.
As shown in fig. 1, 4 and 5, the annular wall gas collecting pipe 10 is provided with a plurality of air holes 11 with the aperture of 30mm. The angle between each exhaust hole 11 on the cross section of the circular wall gas collecting pipe 10 is 90 degrees, the spiral punching is carried out, and only one air hole 11 is arranged on the same cross section. The distance between every two exhaust holes 11 along the length direction of the pipeline is 500mm, and the distance between every two rows of holes is 1500mm. The annular wall gas collecting pipe 10 is arranged to ensure that the air holes 11 are not blocked, wherein one air hole 11 is vertically downward to facilitate discharging accumulated water in the pipe. The annular wall gas collecting pipe 10 is fixed on the side surface of the floating bridge 2 by a 1.5mm membrane band every 2 meters. The main exhaust pipe 4 and the annular wall gas collecting pipe 10 are both made of PVC pipes.
The outer side of the aeration tank 1 is connected with a water inlet pipe 5 which is used for supplementing water into the aeration tank 1.
As shown in FIG. 6, the method for setting the sampling port comprises the following steps;
s1, manufacturing a horn-shaped pipe sleeve 12 made of an impermeable membrane material according to the diameter of a PE pipe, and performing a leakage test to ensure that the pipe sleeve is watertight;
s2, sleeving the pipe sleeve 12 into the PE pipe, adjusting the position of the pipe sleeve 12, connecting the end with the small diameter with the PE pipe pipeline, connecting the end with the large diameter with the anti-seepage film 8 covering the upper side of the aeration tank 1, roughening, temporarily fixing by using a hot air welding gun, and finally welding by using a single-rail welding gun, wherein when the pipe sleeve 12 and the PE pipe are installed and welded, a buffer length is reserved to avoid weld joint tearing caused by thermal expansion and cold contraction or pipeline deviation;
and S3, detecting the hollow part of the two layers of pipe sleeves 12 by using an inflation method after welding, wherein the pressure is stabilized at 0.25Mpa for 3 minutes, and the pipe sleeves are qualified in welding and are protected by double layers.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (6)

1. A medical wastewater treatment device is characterized in that: including aeration tank (1), the upside equidistance of aeration tank (1) is provided with many pontoon bridges (2), pontoon bridge (2) float the upside of aeration tank (1), the both ends of pontoon bridge (2) are fixed the both sides position department of aeration tank (1), the upside of aeration tank (1) covers and has prevention of seepage membrane (8), prevention of seepage membrane (8) are located pontoon bridge (2) upside, the outside of aeration tank (1) is provided with collar tie beam (3), be provided with a plurality of sample connection on prevention of seepage membrane (8), aeration tank (1) in-connection has main blast pipe (4).
2. The medical wastewater treatment apparatus according to claim 1, characterized in that: a plurality of annular wall gas collecting pipes (10) are arranged in the aeration tank (1), the annular wall gas collecting pipes (10) are communicated with the main exhaust pipe (4), and the annular wall gas collecting pipes (10) are fixed on two sides of the floating bridge (2).
3. The medical wastewater treatment apparatus according to claim 2, characterized in that: the annular wall gas collecting pipe (10) is provided with a plurality of air holes (11), and the air holes (11) are uniformly arranged.
4. The medical wastewater treatment apparatus according to claim 1, characterized in that: a plurality of groups of galvanized flat irons (9) are arranged on the upper side of the ring beam (3), and the edge part of the impermeable membrane (8) is fixed on the ring beam (3) and the hardened ground through a plurality of expansion bolts (7) and the galvanized flat irons (9).
5. The medical wastewater treatment apparatus according to claim 1, characterized in that: and a fan (6) is arranged on the main exhaust pipe (4), and the fan (6) is positioned outside the aeration tank (1).
6. The method for setting a sampling port of a medical wastewater treatment apparatus according to claim 1, characterized in that: comprises the following steps;
s1, manufacturing a horn-shaped pipe sleeve (12) made of an impermeable membrane material according to the diameter of a PE pipe, and performing a leakage test to ensure that the pipe sleeve is watertight;
s2, sleeving a pipe sleeve (12) into the PE pipe, adjusting the position of the pipe sleeve (12), connecting the end with the small diameter with the PE pipe pipeline, connecting the end with the large diameter with an anti-seepage film (8) covering the upper side of the aeration tank (1), roughening, temporarily fixing by using a hot air welding gun, and finally welding by using a single-rail welding gun, wherein when the pipe sleeve (12) and the PE pipe are installed and welded, a buffering length is reserved to avoid weld joint tearing caused by thermal expansion and cold contraction or pipeline deviation;
and S3, detecting the hollow part of the two layers of pipe sleeves (12) by using an inflation method after welding, stabilizing the pressure at 0.25Mpa for 3 minutes to obtain qualified welding, and performing double-layer protection.
CN202211163441.4A 2022-09-22 2022-09-22 Medical wastewater treatment device and method Pending CN115536163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211163441.4A CN115536163A (en) 2022-09-22 2022-09-22 Medical wastewater treatment device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211163441.4A CN115536163A (en) 2022-09-22 2022-09-22 Medical wastewater treatment device and method

Publications (1)

Publication Number Publication Date
CN115536163A true CN115536163A (en) 2022-12-30

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202401053U (en) * 2011-12-30 2012-08-29 冯蕴秋 Sunlight temperature-increasing and temperature-preserving methane pit pond
CN202972223U (en) * 2012-10-16 2013-06-05 北京锄禾环保技术有限公司 Sealing structure of impermeable membrane penetrated by metal tube in petrochemical field
CN204529849U (en) * 2015-03-16 2015-08-05 王伟程 A kind of 50 cubic metres of methane-generating pits
CN206375739U (en) * 2016-12-30 2017-08-04 安徽晋煤中能化工股份有限公司 Hang micro-porous aerator
CN210030341U (en) * 2019-05-31 2020-02-07 四川新沃康环保科技有限公司 Medical wastewater treatment system
CN111218979A (en) * 2020-03-12 2020-06-02 陕西一和环境工程有限公司 Floating cover structure on sewage pool
CN214363911U (en) * 2020-12-23 2021-10-08 武汉市园林建筑工程公司 Sealing structure for waste liquid pipeline at bottom of refuse landfill
CN214936447U (en) * 2021-04-01 2021-11-30 苏州富淼膜科技有限公司 Antifouling stifled tubular aerator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202401053U (en) * 2011-12-30 2012-08-29 冯蕴秋 Sunlight temperature-increasing and temperature-preserving methane pit pond
CN202972223U (en) * 2012-10-16 2013-06-05 北京锄禾环保技术有限公司 Sealing structure of impermeable membrane penetrated by metal tube in petrochemical field
CN204529849U (en) * 2015-03-16 2015-08-05 王伟程 A kind of 50 cubic metres of methane-generating pits
CN206375739U (en) * 2016-12-30 2017-08-04 安徽晋煤中能化工股份有限公司 Hang micro-porous aerator
CN210030341U (en) * 2019-05-31 2020-02-07 四川新沃康环保科技有限公司 Medical wastewater treatment system
CN111218979A (en) * 2020-03-12 2020-06-02 陕西一和环境工程有限公司 Floating cover structure on sewage pool
CN214363911U (en) * 2020-12-23 2021-10-08 武汉市园林建筑工程公司 Sealing structure for waste liquid pipeline at bottom of refuse landfill
CN214936447U (en) * 2021-04-01 2021-11-30 苏州富淼膜科技有限公司 Antifouling stifled tubular aerator

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