CN102228796A - Pollution resistant membrane module and use method thereof - Google Patents
Pollution resistant membrane module and use method thereof Download PDFInfo
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- CN102228796A CN102228796A CN2011101233202A CN201110123320A CN102228796A CN 102228796 A CN102228796 A CN 102228796A CN 2011101233202 A CN2011101233202 A CN 2011101233202A CN 201110123320 A CN201110123320 A CN 201110123320A CN 102228796 A CN102228796 A CN 102228796A
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Abstract
The invention provides a pollution resistant membrane module which is a flat membrane module. The membrane module comprises a frame and two filter membranes, wherein the two filter membranes respectively cover the two sides of the frame; a liquid flow channel is formed between the two filter membranes; a water outlet is arranged at one end of the frame; at least a conducting coil pipe vertical to the filter membranes is arranged between the two filter membranes; magnetic chips are arranged in the positions corresponding to the coil bodies on the filter membranes; and the orientations of the south and north poles of the two magnetic chips in the same positions on the two filter membranes are identical. The pollution resistant membrane module has the following beneficial effects: when being electrified, the conducting coils in the pollution resistant membrane module generate south and north poles and generate attractive forces or repulsive forces towards the filter membranes or supporting filter plates which are provided with the magnetic chips with south and north poles; the directions of the south and north poles of the conducting coils are changed by changing the current directions, so that the filter membranes can be continuously shaken to shake off the pollutants, thus alleviating membrane pollution and prolonging the service lives of the membranes; and less electricity is used, so the aeration energy consumption can be reduced and the operation cost can be lowered.
Description
Technical field
The present invention relates to membrane filtration technique, be specifically related to a kind of pollution-resistant membrane assembly and using method thereof.
Background technology
Membrane separation technique has obtained using widely at present, is used for the various filtration systems in fields such as water treatment, food industry, chemical industry.But the film that medium is inner at film and surface accumulation, compression are caused pollutes, and can influence the process stabilizing operation, increases the replacing frequency of film, the broader applications of yoke membrane filtration system.And service life, reduction operating cost that effective film pollution prevention technique can increase membrane flux, cut down the consumption of energy, strengthens the stability of a system, prolongs film.
In in membrane technology, using, flat sheet membrane is wherein a kind of comparatively widely film, the main means of slowing down the flat sheet membrane pollution at present are that the shearing force that is parallel to face that relies on aeration or fluidics to produce is destroyed by medium at the formed cake layer of film surface accumulation, as in water treatment field, flat sheet membrane being applied to membrane bioreactor sewage is filtered, utilize raising aeration intensity and effluxvelocity can strengthen the face shearing force, the resistant to pollution effect of stiffened flat plate film.
But be not that aeration intensity is the bigger the better, aeration intensity is crossed conference and is destroyed the mud flco, its particle diameter is reduced, and may destroy connecting each other between microorganism in the flco, inorganic particle and the extracellular polymeric, impel zoogloea to disintegrate and discharge extracellular polymeric, increase the concentration of dissolved organic matter in the supernatant, the aggravation film pollutes; And enhanced aeration can significantly increase the energy consumption of flat sheet membrane filtration system, improves operating cost, is 240m as treatment scale
3In the reusing sewage system of/d, power cost accounts for 21% of operating cost; Pollute for delaying film, about 40: 1, the energy consumption of aeration accounts for more than 96% of power cost to the membrane biological reactor process gas-water ratio usually, therefore need control aeration rate to greatest extent when guaranteeing treatment effect, decelerating membrane pollution.
Summary of the invention
The purpose of this invention is to provide a kind of pollution-resistant membrane assembly, be applied in and have good filter effect in the membrane filtration system, and under lower aeration rate, have the better pollution resistance performance, can save aeration energy consumption, reduce operating cost.The present invention also provides the using method of this pollution-resistant membrane assembly.
In order to realize above goal of the invention, the invention provides following technical scheme:
A kind of pollution-resistant membrane assembly is plate film assembly, comprising: framework and filter membrane, described filter membrane are two, overlay on described framework both sides respectively, form fluid course between two filter membranes, and delivery port is positioned at framework one end; At least one conductive coil pipe perpendicular to filter membrane is set between described two filter membranes, with described conductive coil pipe corresponding position Magnetic adhesive mat is set on the described filter membrane, the south poles of two Magnetic adhesive mats of same position is towards unanimity on two filter membranes.
As preferably, be inserted with the magnetic core that can strengthen conductive coil pipe magnetic in the described conductive coil pipe.
As preferably, described magnetic core is an iron core.
As preferably, described Magnetic adhesive mat is a flat thin magnet.
A kind of pollution-resistant membrane assembly, be plate film assembly, comprise: framework, support filter plate and filter membrane, described filter membrane is two, overlay on described framework both sides respectively, form the fluid course that seals between two filter membranes, delivery port is positioned at framework one end, two filter membranes are covered with described support filter plate respectively towards the fluid course side, and described support filter plate is made by the rubber-like material; At least one is set perpendicular to the conductive coil pipe that supports filter plate between two support filter plates, has magnetic with described conductive coil pipe corresponding position on the described support filter plate, same on two support filter plates have the position south poles of magnetic towards unanimity.
As preferably, be inserted with the magnetic core that can strengthen conductive coil pipe magnetic in the described conductive coil pipe.
As preferably, described magnetic core is an iron core.
As preferably, described support filter plate is magnet system reticular lamina or supports on the filter plate and with described conductive coil pipe corresponding position flat thin magnet is set.
A kind ofly use above two kinds of methods that the pollution-resistant membrane assembly filters, may further comprise the steps:
Described pollution-resistant membrane assembly is put into liquid to be filtered filter,, and constantly change the sense of current simultaneously with the energising of conductive coil pipe.
As preferably, the frequency of the described change sense of current is 10 times/min-100 time/min.
Be provided with conductive coil in the pollution-resistant membrane assembly provided by the invention, can produce the north and south magnetic pole during energising, filter membrane or the support filter plate that the Magnetic adhesive mat that itself just has the north and south magnetic pole is housed produced attraction or repulsive force, thereby by changing the north and south pole orientation that the sense of current changes conductive coil, can so that filter membrane constantly shake, pollutant is shaken off, make filter cake on filter membrane, not accumulate, thereby decelerating membrane pollution, prolong film service life, and electricity consumption is less, can save aeration energy consumption, reduces operating cost.
Description of drawings
Fig. 1 is the structural representation of the pollution-resistant membrane assembly that the specific embodiment of the invention provided;
Fig. 2 is the sectional side view of pollution-resistant membrane assembly shown in Figure 1;
Fig. 3 is the fundamental diagram of pollution-resistant membrane assembly among Fig. 1;
The structural representation of the pollution-resistant membrane assembly that Fig. 4 is provided for the another kind of specific embodiment of the present invention;
Fig. 5 is the sectional side view of pollution-resistant membrane assembly shown in Figure 4.
The specific embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, but should be appreciated that these describe just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the pollution-resistant membrane assembly that the specific embodiment of the invention provided, and Fig. 2 is the sectional side view of pollution-resistant membrane assembly shown in Figure 1.A kind of pollution-resistant membrane assembly provided by the invention is that plate film assembly comprises framework 1 and filter membrane 2, framework 1 is made circle, rectangle or square and all can, filter membrane 2 is two, overlay on framework 1 both sides respectively, framework 1 and filter membrane 2 form a space, be fluid course, delivery port 3 is positioned at an end of framework 1.When filtering, connect suction pump at delivery port 3 places, by suction, liquid vertically passing filter membrane 2 faces to be filtered flow in the fluid course of filter membrane 2 and framework 1 formation, liquid flows along filter membrane 2 faces along fluid course then, is flowed out by delivery port 3, forms cross-flow filtration.At least one conductive coil pipe 4 perpendicular to filter membrane is set between two filter membranes 2, conductive coil can be wrapped in cylinder or tube wall, a plurality of conductive coil pipes 4 preferably are set during actual motion, simultaneously the position corresponding with conductive coil pipe 4 is provided with Magnetic adhesive mat 21 on two filter membranes 2, the south poles of two Magnetic adhesive mats 21 of same position is towards unanimity on two filter membranes 2, and preferred Magnetic adhesive mat 21 is a flat thin magnet.
For strengthening magnetic, preferably in conductive coil pipe 4, place magnetic core 41, can be iron core, use soft iron or silicon steel to make, behind the inner insertion of conductive coil pipe iron core, the magnetic field magnetisation of the conductive coil pipe after iron core can be energized also becomes a magnet, because two magnetic fields superpose mutually, thereby the magnetic of conductive coil pipe is strengthened greatly.
With reference to figure 3, Fig. 3 is the fundamental diagram of pollution-resistant membrane assembly among Fig. 1.Energising back conductive coil pipe 4 can produce magnetic force, have the South Pole (S level) and the arctic (N level), Magnetic adhesive mat 21 also has the north and south magnetic pole, this moment if Magnetic adhesive mat 21 be arranged so that the relative a pair of magnetic pole of Magnetic adhesive mat 21 and conductive coil pipe 4 is different, then Magnetic adhesive mat 21 is attracted by conductive coil pipe 4, thereby driving filter membrane 2 is attracted by conductive coil pipe 4, because the south poles of two Magnetic adhesive mats 21 is towards unanimity, therefore two filter membranes 2 all can cave inward, under the situation that did not influence water, conductive coil pipe 4 is provided with and morely makes that the magnetic force that produces is bigger, filter membrane 2 easier being attracted.
At this moment change the sense of current, then the north and south magnetic pole of conductive coil pipe 4 exchanges, and the direction of the north and south magnetic pole of the Magnetic adhesive mat on the filter membrane 2 can not change, then a pair of magnetic pole that Magnetic adhesive mat 21 and conductive coil pipe 4 are relative is identical, therefore 4 pairs of Magnetic adhesive mats of conductive coil pipe 21 produce repulsive forces, filter membrane 2 reinstatement of also therefore upspringing.Along with the change of the sense of current, filter membrane 2 can cave inward and then upspring like this, produces vibration, thereby can prevent the formation of filter cake with carrying out along with filtration and constantly shaking off attached to the pollutant on the filter membrane 2.
In addition, also can pass a spring when not inserting magnetic core in the conductive coil pipe 4, can make filter membrane 2 better to rebound, the natural length of spring is greater than the length of coil case, for better contacting with Magnetic adhesive mat 2.When conductive coil pipe 4 attracted with Magnetic adhesive mat 21, spring was compressed, and the elastic force that produces during this spring compression needs less than the magnetic force between conductive coil pipe 4 and the Magnetic adhesive mat 21; When changing the sense of current, produce repulsive force, add the elastic force of spring, the filter membrane 2 so the original state of being rebounded have realized the purpose of vibrating.
Please refer to Fig. 4 and Fig. 5, the structural representation of the pollution-resistant membrane assembly that Fig. 4 is provided for the another kind of specific embodiment of the present invention, Fig. 5 is the sectional side view of pollution-resistant membrane assembly shown in Figure 4.It is that plate film assembly comprises framework 1, supports filter 5 and filter membrane 2 that the present invention also provides a kind of pollution-resistant membrane assembly, framework 1 is made circle, rectangle or square and all can, filter membrane 2 is two, overlay on framework 1 both sides respectively, framework 1 and filter membrane 2 form fluid course, and delivery port is positioned at an end of framework 1.Two filter membranes 2 are covered with respectively towards the fluid course side and support filter plate 5, support filter plate 5 and play a supporting role, and are made by the rubber-like material.At least one is set perpendicular to the conductive coil pipe 4 that supports filter plate 5 between two support filter plates 5 simultaneously, can be column or tubulose, two are supported on the filter plate 5 position corresponding with conductive coil pipe 4 and have magnetic, same on two support filter plates 5 have the position south poles of magnetic towards unanimity, so that two conductive coil pipes 4 that support after filter plate 5 can be energized simultaneously attract, and drive filter membrane 2 caves inward together.Supporting filter plate 5 can be for for being provided with flat thin magnet with conductive coil pipe corresponding position on magnet system reticular lamina or the support filter plate, when supporting filter plate 5 for magnet system reticular lamina, magnet net itself just has the north and south magnetic pole can be attracted or repel when 4 energisings of conductive coil pipe and the change sense of current, preferably can with conductive coil pipe 4 corresponding positions Magnetic adhesive mat 51 be set thereon again, increase attraction; When support filter plate 5 is made for non-magnetic elastomeric material, support on the filter plate and Magnetic adhesive mat 51 can be set with conductive coil pipe corresponding position, be preferably flat thin magnet.
For strengthening magnetic, can preferably in conductive coil pipe 4, insert magnetic core 41, can be iron core.
Energising back conductive coil pipe 4 can produce the north and south magnetic pole, if it is different to support the relative a pair of magnetic pole of filter plate 5 or Magnetic adhesive mat 51 and conductive coil pipe 4, then conductive coil pipe 4 can attract to support filter plate 5, thereby driving two filter membranes 2 caves inward, under the situation that did not influence water, conductive coil pipe 4 is provided with and morely makes that the magnetic force that produces is bigger, filter membrane 2 easier being attracted.
After changing the sense of current, the north and south magnetic pole that conductive coil pipe 4 produces exchanges, and also therefore produces repulsive forces to supporting filter plate 5, filter membrane 2 reinstatement of also thereupon upspringing.Along with the change of the sense of current, filter membrane 2 can cave inward and then upspring like this, produces vibration, thereby can prevent the formation of filter cake with carrying out along with filtration and constantly shaking off attached to the pollutant on the filter membrane 2.
When not inserting magnetic core in the conductive coil pipe 4, wherein pass a spring, the natural length of spring is greater than the length of conductive coil pipe 4.When conductive coil pipe 4 attracted with support filter plate 5, spring was compressed, and the elastic force that produces during this spring compression needs less than the magnetic force between conductive coil pipe 4 and the support filter plate 5; When changing the sense of current, 4 pairs of conductive coil pipes support filter plate 5 and produce repulsive forces, add the elastic force of spring, support filter plate 5 and filter membrane 2 original state of being rebounded, and have realized the purpose of vibration.
The method of using pollution-resistant membrane assembly provided by the invention to filter may further comprise the steps:
Described pollution-resistant membrane assembly is put into liquid to be filtered to be filtered, simultaneously the conductive coil pipe is switched on, the conductive coil pipe produces the north and south magnetic pole, and the Magnetic adhesive mat itself that is provided with on filter membrane or the support filter plate promptly has the north and south magnetic pole, therefore Magnetic adhesive mat can produce attraction or repulsive force with the conductive coil pipe, drives filter membrane and caves in or upspring to the conductive coil pipe; Change the sense of current then, filter membrane outwards flicks the recovery original state or caves inward, and along with the change of the sense of current, thereby makes filter membrane produce vibration, will shake off attached to the pollutant of filter membrane surface owing to taking out filtered water, has slowed down the pollution of filter membrane.For pollutant can being shaken off, the frequency that preferably changes the sense of current is set to 50 times/min-120 time/min.
More than a kind of pollution-resistant membrane assembly provided by the present invention and using method thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a pollution-resistant membrane assembly is plate film assembly, it is characterized in that, comprising: framework and filter membrane, described filter membrane are two, overlay on described framework both sides respectively, form fluid course between two filter membranes, and delivery port is positioned at framework one end; At least one conductive coil pipe perpendicular to filter membrane is set between described two filter membranes, with described conductive coil pipe corresponding position Magnetic adhesive mat is set on the described filter membrane, the south poles of two Magnetic adhesive mats of same position is towards unanimity on two filter membranes.
2. pollution-resistant membrane assembly according to claim 1 is characterized in that, is inserted with the magnetic core that can strengthen conductive coil pipe magnetic in the described conductive coil pipe.
3. pollution-resistant membrane assembly according to claim 1 is characterized in that, described magnetic core is an iron core.
4. according to each described pollution-resistant membrane assembly in the claim 1 to 3, it is characterized in that described Magnetic adhesive mat is a flat thin magnet.
5. pollution-resistant membrane assembly, be plate film assembly, it is characterized in that, comprise: framework, support filter plate and filter membrane, described filter membrane is two, overlays on described framework both sides respectively, form the fluid course that seals between two filter membranes, delivery port is positioned at framework one end, and two filter membranes are covered with described support filter plate respectively towards the fluid course side, and described support filter plate is made by the rubber-like material; At least one is set perpendicular to the conductive coil pipe that supports filter plate between two support filter plates, has magnetic with described conductive coil pipe corresponding position on the described support filter plate, same on two support filter plates have the position south poles of magnetic towards unanimity.
6. pollution-resistant membrane assembly according to claim 5 is characterized in that, is inserted with the magnetic core that can strengthen conductive coil pipe magnetic in the described conductive coil pipe.
7. pollution-resistant membrane assembly according to claim 6 is characterized in that, described magnetic core is an iron core.
8. according to each described pollution-resistant membrane assembly in the claim 5 to 7, it is characterized in that described support filter plate is with described conductive coil pipe corresponding position flat thin magnet to be set on magnet system reticular lamina or the support filter plate.
9. a method of using claim 1 or 5 described pollution-resistant membrane assemblies to filter is characterized in that, may further comprise the steps:
Described pollution-resistant membrane assembly is put into liquid to be filtered filter,, and constantly change the sense of current simultaneously with the energising of conductive coil pipe.
10. method according to claim 7 is characterized in that, the frequency of the described change sense of current is 10 times/min-100 time/min.
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| CN201110123320.2A CN102228796B (en) | 2011-05-13 | 2011-05-13 | Pollution resistant membrane module and use method thereof |
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| CN201110123320.2A CN102228796B (en) | 2011-05-13 | 2011-05-13 | Pollution resistant membrane module and use method thereof |
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| CN102228796A true CN102228796A (en) | 2011-11-02 |
| CN102228796B CN102228796B (en) | 2015-04-01 |
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Cited By (20)
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| CN102658033A (en) * | 2012-04-28 | 2012-09-12 | 江苏大孚膜科技有限公司 | Flat plate membrane component |
| CN103191645A (en) * | 2013-04-22 | 2013-07-10 | 叶茂盛 | Anti-pollution membrane component and using method of membrane component |
| CN105129920A (en) * | 2015-09-16 | 2015-12-09 | 湖州恒鑫过滤科技有限公司 | Runner plate of cross-flow membrane module |
| CN106145556A (en) * | 2016-08-30 | 2016-11-23 | 余浩 | Waste water purifying treatment system and operational approach thereof |
| CN106139911A (en) * | 2016-08-30 | 2016-11-23 | 武尚文 | A kind of membrane module for sewage treatment and using method thereof |
| CN106186307A (en) * | 2016-08-30 | 2016-12-07 | 广德清源水处理设备有限公司 | Connect the anaerobic baffled reactor for sewage disposal and its using method of membrane cisterna |
| CN106186296A (en) * | 2016-08-30 | 2016-12-07 | 宁国市渠源净水设备有限公司 | Oxidation ditch sewage purification system and using method thereof |
| CN106186330A (en) * | 2016-08-30 | 2016-12-07 | 李纪勇 | The processing system of sewage and using method thereof |
| CN106178962A (en) * | 2016-08-30 | 2016-12-07 | 宁国市渠源净水设备有限公司 | Electromagnetism decontamination membrane module and its operational approach |
| CN106186564A (en) * | 2016-08-30 | 2016-12-07 | 广德清源水处理设备有限公司 | Membrane bioreactor sewage purification system and operational approach thereof |
| CN106186327A (en) * | 2016-08-30 | 2016-12-07 | 宁国市渠源净水设备有限公司 | Waste water pollutant-removing system and using method |
| CN106186326A (en) * | 2016-08-30 | 2016-12-07 | 广德清源水处理设备有限公司 | A kind of sewage purification pollutant-removing system and its operational approach |
| CN106277612A (en) * | 2016-08-30 | 2017-01-04 | 广德清源水处理设备有限公司 | Sewage purification system and operational approach thereof |
| CN106277611A (en) * | 2016-08-30 | 2017-01-04 | 宁国市渠源净水设备有限公司 | A kind of anoxic baffled reactor sewage-treatment plant and its operational approach |
| CN106277607A (en) * | 2016-08-30 | 2017-01-04 | 王超 | A kind of water purification system containing membrane module and using method thereof |
| CN106914143A (en) * | 2015-12-28 | 2017-07-04 | 李志鸿 | magnetic suspension three-dimensional diaphragm |
| CN109876671A (en) * | 2019-01-28 | 2019-06-14 | 中国科学技术大学 | Seperation film anti-pollution device, seperation film antipollution system |
| CN112661262A (en) * | 2019-10-16 | 2021-04-16 | 南开大学 | Novel intelligent dynamic anti-pollution anaerobic membrane bioreactor |
| CN114360170A (en) * | 2022-01-11 | 2022-04-15 | 浙江正越智能设备有限公司 | Long-life dining room self-service recharge all-in-one machine |
| CN115212725A (en) * | 2022-07-27 | 2022-10-21 | 东风柳州汽车有限公司 | Filter membrane recycling device and filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658033A (en) * | 2012-04-28 | 2012-09-12 | 江苏大孚膜科技有限公司 | Flat plate membrane component |
| CN103191645A (en) * | 2013-04-22 | 2013-07-10 | 叶茂盛 | Anti-pollution membrane component and using method of membrane component |
| CN105129920A (en) * | 2015-09-16 | 2015-12-09 | 湖州恒鑫过滤科技有限公司 | Runner plate of cross-flow membrane module |
| CN106914143A (en) * | 2015-12-28 | 2017-07-04 | 李志鸿 | magnetic suspension three-dimensional diaphragm |
| CN106186307A (en) * | 2016-08-30 | 2016-12-07 | 广德清源水处理设备有限公司 | Connect the anaerobic baffled reactor for sewage disposal and its using method of membrane cisterna |
| CN106277611A (en) * | 2016-08-30 | 2017-01-04 | 宁国市渠源净水设备有限公司 | A kind of anoxic baffled reactor sewage-treatment plant and its operational approach |
| CN106186296A (en) * | 2016-08-30 | 2016-12-07 | 宁国市渠源净水设备有限公司 | Oxidation ditch sewage purification system and using method thereof |
| CN106186330A (en) * | 2016-08-30 | 2016-12-07 | 李纪勇 | The processing system of sewage and using method thereof |
| CN106178962A (en) * | 2016-08-30 | 2016-12-07 | 宁国市渠源净水设备有限公司 | Electromagnetism decontamination membrane module and its operational approach |
| CN106186564A (en) * | 2016-08-30 | 2016-12-07 | 广德清源水处理设备有限公司 | Membrane bioreactor sewage purification system and operational approach thereof |
| CN106186327A (en) * | 2016-08-30 | 2016-12-07 | 宁国市渠源净水设备有限公司 | Waste water pollutant-removing system and using method |
| CN106186326A (en) * | 2016-08-30 | 2016-12-07 | 广德清源水处理设备有限公司 | A kind of sewage purification pollutant-removing system and its operational approach |
| CN106277612A (en) * | 2016-08-30 | 2017-01-04 | 广德清源水处理设备有限公司 | Sewage purification system and operational approach thereof |
| CN106139911A (en) * | 2016-08-30 | 2016-11-23 | 武尚文 | A kind of membrane module for sewage treatment and using method thereof |
| CN106277607A (en) * | 2016-08-30 | 2017-01-04 | 王超 | A kind of water purification system containing membrane module and using method thereof |
| CN106145556A (en) * | 2016-08-30 | 2016-11-23 | 余浩 | Waste water purifying treatment system and operational approach thereof |
| CN109876671A (en) * | 2019-01-28 | 2019-06-14 | 中国科学技术大学 | Seperation film anti-pollution device, seperation film antipollution system |
| CN109876671B (en) * | 2019-01-28 | 2021-04-23 | 中国科学技术大学 | Separation membrane anti-pollution device and separation membrane anti-pollution system |
| CN112661262A (en) * | 2019-10-16 | 2021-04-16 | 南开大学 | Novel intelligent dynamic anti-pollution anaerobic membrane bioreactor |
| CN112661262B (en) * | 2019-10-16 | 2022-09-27 | 南开大学 | Intelligent dynamic anti-pollution anaerobic membrane bioreactor |
| CN114360170A (en) * | 2022-01-11 | 2022-04-15 | 浙江正越智能设备有限公司 | Long-life dining room self-service recharge all-in-one machine |
| CN115212725A (en) * | 2022-07-27 | 2022-10-21 | 东风柳州汽车有限公司 | Filter membrane recycling device and filter |
| CN115212725B (en) * | 2022-07-27 | 2023-08-18 | 东风柳州汽车有限公司 | Filter membrane reuse device and filter |
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