CN114441246A - Atmospheric micro-plastic sedimentation sampling system - Google Patents
Atmospheric micro-plastic sedimentation sampling system Download PDFInfo
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- CN114441246A CN114441246A CN202210078153.2A CN202210078153A CN114441246A CN 114441246 A CN114441246 A CN 114441246A CN 202210078153 A CN202210078153 A CN 202210078153A CN 114441246 A CN114441246 A CN 114441246A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 44
- 239000004033 plastic Substances 0.000 title claims abstract description 44
- 238000005070 sampling Methods 0.000 title claims abstract description 34
- 238000004062 sedimentation Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 55
- 239000010935 stainless steel Substances 0.000 claims abstract description 55
- 239000012528 membrane Substances 0.000 claims abstract description 43
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 16
- 229920000426 Microplastic Polymers 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 description 8
- 241000282414 Homo sapiens Species 0.000 description 4
- 230000036541 health Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000003899 bactericide agent Substances 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 235000012631 food intake Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides an atmospheric micro-plastic sedimentation sampling system, which comprises: stainless steel shell frame, cascade device, stainless steel water storage tank, force (forcing) pump and inorganic membrane ultrafiltration device. The micro plastic in the atmosphere is settled on the surface of a water curtain device at the top of the system, enters a stainless steel water storage tank through water flow, is filtered by an inorganic membrane ultrafiltration device, is intercepted and accumulated on the surface of a ceramic membrane, and the effluent water flow passes through a water curtain outlet again to form a water curtain to form a water flow closed loop. The sampling system does not use any plastic product, and can effectively prevent additional plastic pollution generated in the sampling process so as to realize long-term, continuous and pollution-free sampling work.
Description
Technical Field
The invention relates to the technical field of environmental engineering, in particular to an atmospheric micro-plastic sedimentation sampling system.
Background
Plastic contamination is one of the most urgent environmental problems of the 21 st century. The pollution caused by human beings causes the global plastics to form a natural cycle process like carbon cycle, and the plastics move in the atmosphere, sea and land, and the result is the "plastic ization" of the earth. The plastic discarded in the environment can be decomposed into micro plastic particles with the diameter less than 5mm, and then the micro plastic particles can not only enter the organism along with the actions of food intake and the like, but also can finally affect the health of human beings through a food chain.
The plastic industry in China is rapidly developed and always in the front of the plastic product yield ranks in various countries in the world, wherein the yields of various plastic products such as PVC, amino molding compounds and the like are in the first place all over the world. In 2017, the annual output of plastic products in China reaches 7515.54 ten thousand tons. The production capacity and the use amount of plastics in China are so huge, and a rich potential source is provided for micro-plastic pollution. Billions of tons of plastic, which are discarded into the sea and land and broken down into small pieces, are being blown into the air by the wind from vehicles, the sea and the farmland. This makes the micro-plastics almost ubiquitous, even if people breathe, drink and eat them, and raises concerns about the impact of atmospheric plastics pollution on human health.
In recent years, China actively copes with global marine plastic waste and micro-plastic pollution, the marine waste monitoring work is started just as early as 2007, and marine micro-plastic is brought into the marine monitoring range in 2016. China organizes and develops the current situation investigation of environmental micro-plastic pollution as soon as possible, analyzes the main sources and input ways of environmental micro-plastics, reveals the environmental behaviors and pollution characteristics of the micro-plastics, scientifically evaluates the ecological risks and human health risks of environmental micro-plastic pollution, and provides scientific support for environmental management of the micro-plastics.
At present, most of environmental micro-plastic pollution sampling investigation in China is also concentrated on micro-plastic pollution analysis in water, and the sampling investigation on the micro-plastic pollution in the atmosphere is less. China is still relatively short of monitoring work for micro plastic pollution in the atmosphere and a sampling device system designed for the work.
Disclosure of Invention
The invention aims to provide an atmospheric micro-plastic sedimentation sampling system to realize long-term, continuous and pollution-free sampling work.
In order to solve the technical problem, the invention provides an atmospheric micro-plastic sedimentation sampling system, which comprises: stainless steel shell frame, cascade device, stainless steel water storage tank, force (forcing) pump and inorganic membrane ultrafiltration device.
Wherein, the micro-plastic in the atmosphere subsides on the cascade device surface at system top, gets into stainless steel water storage tank through rivers, filters through inorganic membrane ultrafiltration device again, intercepts the accumulation with micro-plastic on the ceramic membrane surface, and its play rivers form the cascade through cascade export again, form rivers closed loop.
The water curtain device consists of a water curtain outlet, a stainless steel bottom plate and a water collecting tank.
Wherein, the water curtain outlet is a stainless steel water pipe with the pipe diameter of 8-10mm, small holes are arranged in a line on the side surface of the water pipe, the hole diameter is 2-4mm, and the hole interval is 10-15 mm.
The stainless steel bottom plate is designed to have an inclination angle of 15-30 degrees, one high side is connected with the water curtain outlet, and the other low side is connected with the water collecting tank, so that the water curtain can flow to the water collecting tank due to gravity.
Wherein, four sides of the stainless steel bottom plate are connected with the stainless steel shell frame and are 3-5cm higher than the bottom plate of the water curtain device.
The inorganic membrane ultrafiltration device consists of a flat inorganic ultrafiltration membrane and a stainless steel membrane pool.
Wherein the flat inorganic ultrafiltration membrane material can be ZrO2，TiO2，Al2O3And iron filings, etc.
Wherein the membrane aperture of the flat inorganic ultrafiltration membrane is 10-100nm, and the membrane area is 10-100cm2。
Wherein, the top of the stainless steel water storage tank and the stainless steel water pipe are linked to the water collecting tank, and the bottom of the stainless steel water storage tank and the stainless steel water pipe are linked to the pressure pump.
The invention has the beneficial effects that:
all components of the atmospheric micro-plastic sedimentation sampling system provided by the invention do not use any plastic product, and can effectively prevent additional plastic pollution from being generated in the sampling process, so that long-term, continuous and pollution-free sampling work is realized.
Drawings
FIG. 1 is a schematic diagram of an atmospheric micro-plastic sedimentation sampling system provided by the present invention.
Detailed Description
The invention provides an atmospheric micro-plastic sedimentation sampling system, which comprises: stainless steel shell frame, cascade device, stainless steel water storage tank, force (forcing) pump and inorganic membrane ultrafiltration device.
The whole system does not use any plastic product, can effectively prevent additional plastic pollution generated in the sampling process, and the water curtain device and the inorganic membrane ultrafiltration device are effectively combined to form water flow circulation. The micro plastic in the atmosphere is settled on the surface of a water curtain device at the top of the system, enters a stainless steel water storage tank through water flow, is filtered by an inorganic membrane ultrafiltration device, is intercepted and accumulated on the surface of a ceramic membrane, and the effluent water flow of the micro plastic forms a water curtain through a water curtain outlet again to form a water flow closed loop, so that long-term continuous sampling is realized.
The water curtain device consists of a water curtain outlet, a stainless steel bottom plate and a water collecting tank and is arranged at the top of the system. The water curtain outlet is a stainless steel water pipe with the pipe diameter of 8-10mm, small holes are arranged in a line on the side face of the water pipe, the hole diameter is 2-4mm, and the hole distance is 10-15 mm.
The inclination angle of the stainless steel bottom plate is 15-30 degrees, the high side is connected with the outlet of the water curtain, and the low side is connected with the water collecting tank, so that the water curtain can flow to the water collecting tank due to gravity. Meanwhile, a detachable screen is arranged on the lower side of the bottom plate and used for intercepting large fallen objects such as leaf insects and the like. The four sides of the stainless steel bottom plate are connected with the stainless steel shell frame and are 3-5cm higher than the bottom plate of the water curtain device to form a sealed fence to prevent water from flowing outwards.
The inorganic membrane ultrafiltration device consists of a flat inorganic ultrafiltration membrane and a stainless steel membrane pool. The membrane material may be ZrO2，TiO2，Al2O3One or more of iron filings, etc. with a membrane pore diameter of 10-100nm and a membrane area of 10-100cm2The shape of the membrane can be round, square, etc.
The top of the stainless steel water storage tank and the stainless steel water pipe are connected to the water collecting tank, and the bottom of the stainless steel water storage tank and the stainless steel water pipe are connected to the pressure pump. The capacity is 5-15L, and the shape can be cylindrical, funnel-shaped, etc.
The pressure range of the pressure pump is 0-10bar, and the pressure pump can be externally connected with a common power supply to supply water for the ultrafiltration device and filter pressure.
The system is used for circulating water, can be clean and pollution-free deionized water or pure water, and can also be properly added with soluble additives such as bactericide and the like according to needs to prevent bacteria in water from breeding to generate membrane pollution to influence the operation of the system.
Embodiments of the present invention will be described in detail below with reference to examples and drawings, by which how to apply technical means to solve technical problems and achieve a technical effect can be fully understood and implemented.
Example 1
As shown in figure 1, the atmospheric micro-plastic sedimentation sampling system provided by the invention has a stainless steel shell frame 1 with the length of 70cm, the width of 50cm, the height of one side of 65cm and the other side of 50 cm. The front steel plate can be detached so as to carry out system maintenance such as component cleaning and part replacement. The bottom sets up four wheels, makes things convenient for the transportation to remove.
The water curtain device at the top of the system consists of a water curtain outlet 2, a stainless steel bottom plate 3 and a water collecting tank 4. The water curtain outlet is a stainless steel water pipe 10 with the pipe diameter of 8mm, small holes are arranged in a line on the side surface of the water pipe side by side, the hole diameter is 3mm, and the hole interval is 10 mm. The stainless steel bottom plate is designed to have an inclination angle of 20 degrees, one side of the stainless steel bottom plate which is high is connected with the outlet of the water curtain, and the other side of the stainless steel bottom plate which is low is connected with the water collecting tank 4. The width of the water collecting tank is 2cm, and the height of the water collecting tank is 5 cm. Meanwhile, a detachable screen 9 with 10 meshes is arranged at the lower side of the bottom plate in front of the water collecting tank. The stainless steel shell frames on the four sides are all higher than the bottom plate of the water curtain device by 3cm, so that a sealed enclosure is formed, and water is prevented from flowing outwards.
The stainless steel water storage tank 5 in the system has a capacity of 5L and is funnel-shaped. The top and the pipe diameter are stainless steel water pipe connection to the water catch bowl for 10mm, and the bottom and the pipe diameter are stainless steel water pipe connection to force (forcing) pump 6 for 10 mm. The pressure range of the booster pump is 0-10bar, and the booster pump is externally connected with a common 220V power supply. A pressure pump 6 and an inorganic membrane ultrafiltration device 7The two parts are connected by a stainless steel water pipe with the diameter of 10 mm. The inorganic membrane ultrafiltration device consists of a flat inorganic ultrafiltration membrane 8 and a stainless steel membrane pool. Using round ZrO2An inorganic ceramic ultrafiltration membrane with a membrane aperture of 100nm and a membrane area of 25cm2. The outlet water of the ultrafiltration device is connected to the outlet of the water curtain through a stainless steel water pipe with the diameter of 8 mm.
4L of pure water is initially used in the system, and if continuous sampling is required for more than 3 days, a proper bactericide can be added to prevent bacteria in water from breeding. The atmospheric micro-plastic sedimentation sampling system can operate only by plugging electricity. If the sampling is carried out continuously for a long time, the maintenance measures are that water is added into the water storage tank once in 2-3 days, the membrane is replaced once in about one week, the operation is simple and convenient, and the maintenance is easy.
All of the above mentioned intellectual property rights are not intended to be restrictive to other forms of implementing the new and/or new products. Those skilled in the art will take advantage of this important information, and the foregoing will be modified to achieve similar performance. However, all modifications or alterations are based on the new products of the invention and belong to the reserved rights.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention, without departing from the technical solution of the present invention, still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. An atmospheric micro-plastic sedimentation sampling system, comprising: stainless steel shell frame, cascade device, stainless steel water storage tank, force (forcing) pump and inorganic membrane ultrafiltration device.
2. The atmospheric micropolastic sedimentation sampling system of claim 1, wherein: the micro plastic in the atmosphere is settled on the surface of a water curtain device at the top of the system, enters a stainless steel water storage tank through water flow, is filtered by an inorganic membrane ultrafiltration device, is intercepted and accumulated on the surface of a ceramic membrane, and the effluent water flow passes through a water curtain outlet again to form a water curtain to form a water flow closed loop.
3. The atmospheric micropolastic sedimentation sampling system of claim 1 or 2, wherein: the water curtain device consists of a water curtain outlet, a stainless steel bottom plate and a water collecting tank.
4. The atmospheric micropolastic sedimentation sampling system of claim 1 or 2, wherein: the water curtain outlet is a stainless steel water pipe with the pipe diameter of 8-10mm, small holes are arranged in a line on the side face of the water pipe, the hole diameter is 2-4mm, and the hole distance is 10-15 mm.
5. The atmospheric micropolastic sedimentation sampling system of claim 1 or 2, wherein: the stainless steel bottom plate is designed to have an inclination angle of 15-30 degrees, one high side is connected with the water curtain outlet, and the other low side is connected with the water collecting tank, so that the water curtain can flow to the water collecting tank due to gravity.
6. The atmospheric micropolastic sedimentation sampling system of claim 1 or 2, wherein: four sides of the stainless steel bottom plate are connected with the stainless steel shell frame and are 3-5cm higher than the bottom plate of the water curtain device.
7. The atmospheric micropolastic sedimentation sampling system of claim 1 or 2, wherein: the inorganic membrane ultrafiltration device consists of a flat inorganic ultrafiltration membrane and a stainless steel membrane pool.
8. The atmospheric micropolastic sedimentation sampling system of claim 7, wherein: the flat inorganic ultrafiltration membrane material can be ZrO2，TiO2，Al2O3And iron filings, etc.
9. The atmospheric micropolastic sedimentation sampling system of claim 7, wherein: the membrane aperture of the flat inorganic ultrafiltration membrane is 10-100nm, and the membrane area is 10-100cm2。
10. The atmospheric micropolastic sedimentation sampling system of claim 1 or 2, wherein: the top of the stainless steel water storage tank and the stainless steel water pipe are connected to the water collecting tank, and the bottom of the stainless steel water storage tank and the stainless steel water pipe are connected to the pressure pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078153.2A CN114441246A (en) | 2022-01-24 | 2022-01-24 | Atmospheric micro-plastic sedimentation sampling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078153.2A CN114441246A (en) | 2022-01-24 | 2022-01-24 | Atmospheric micro-plastic sedimentation sampling system |
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| CN114441246A true CN114441246A (en) | 2022-05-06 |
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| CN202210078153.2A Pending CN114441246A (en) | 2022-01-24 | 2022-01-24 | Atmospheric micro-plastic sedimentation sampling system |
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