CN114057257B - Piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation - Google Patents
Piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation Download PDFInfo
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- CN114057257B CN114057257B CN202111369203.4A CN202111369203A CN114057257B CN 114057257 B CN114057257 B CN 114057257B CN 202111369203 A CN202111369203 A CN 202111369203A CN 114057257 B CN114057257 B CN 114057257B
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 23
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 23
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- 230000015556 catabolic process Effects 0.000 title claims abstract description 16
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 229910052724 xenon Inorganic materials 0.000 claims abstract description 10
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 19
- 239000002351 wastewater Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000001699 photocatalysis Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000593 degrading effect Effects 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 229940073609 bismuth oxychloride Drugs 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- MHWZQNGIEIYAQJ-UHFFFAOYSA-N molybdenum diselenide Chemical compound [Se]=[Mo]=[Se] MHWZQNGIEIYAQJ-UHFFFAOYSA-N 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 2
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation, which comprises a funnel-shaped wall surface, wherein a spiral reaction tank is arranged on the inner surface of the funnel-shaped wall surface, two ends of the spiral reaction tank are communicated with a water inlet at the upper part and a water outlet at the bottom of the funnel-shaped wall surface, a piezoelectric film is attached to the inner side of the funnel-shaped reaction tank, a hydroelectric generator is arranged at the water outlet, and a xenon lamp is arranged above the funnel-shaped wall surface and connected with the hydroelectric generator. The invention effectively utilizes the water flow to drive the piezoelectric film to generate the piezoelectric effect, converts the mechanical energy of the water flow acting on the surface of the piezoelectric structure unit into chemical energy and is used for degrading pollutants; meanwhile, mechanical energy is converted into electric energy by utilizing a hydroelectric generation principle and is collected and utilized; the invention has the advantages of simple structure, easy realization, energy saving and environmental protection, saves the cost and improves the working efficiency compared with the traditional photocatalysis device, and can obtain huge economic benefit because of energy supplement and longer working life.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation.
Background
With the discharge of chemical industrial pollutants, and the use of large quantities of medicines and random discharge, the pollutant components in water bodies are gradually complicated. The photocatalysis technology can utilize green and clean solar energy to excite semiconductor oxide and degrade pollutants in water into nontoxic and harmless CO 2 And H 2 O, thereby achieving the purposes of deodorization, decoloration, detoxification and the like. Compared with the traditional water treatment technology, the method has the advantages of simple process, low energy consumption, easy operation and the like, and can completely degrade a plurality of toxic pollutants, thereby having high application value in the deep water treatment process.
The photocatalyst with wider application is mainly TiO 2 And ZnO, and the like, to overcome the defects of large forbidden band width and high photogenerated electron-hole recombination rate of the traditional catalyst in the photocatalytic degradation process, researchers perform a series of work, such as doping, doping modification, semiconductor recombination and the like, to improve the catalytic activity of the catalyst, but the bulk phase charge separation efficiency is still low. The use of the piezoelectric effect in recent years has been to improve catalysisEfficient method: the separation of photon-generated carriers is promoted by utilizing a built-in electric field of a piezoelectric effect, so that the piezoelectric and photocatalytic efficiency is improved by utilizing mechanical energy.
In the practical application of piezoelectric materials, the choice of driving force is an important factor for the practical application and further development thereof. At present, most of the piezoelectric materials are driven by ultrasonic vibration or an external electric field to generate a piezoelectric effect, and the problems of high energy consumption and the like exist. In addition, in a piezoelectric photocatalytic system, a device capable of effectively coupling piezoelectric and photocatalytic effects to degrade pollutants is very limited, and the traditional photocatalytic reactor has different defects due to structural reasons, such as difficulty in separating a photocatalyst of a suspension reactor, and small contact area between the catalyst and a reactant in a fixed bed type reactor, which results in reduction of degradation efficiency. Therefore, proper optimization needs to be made on the structural design of the piezoelectric photocatalytic device, the photocatalytic efficiency is effectively improved, and meanwhile, the reaction system is simplified, so that the application value of the piezoelectric photocatalytic device is realized.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the background art, the invention discloses a piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation.
The technical scheme is as follows: the invention discloses a piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation, which comprises a funnel-shaped wall surface, wherein a spiral reaction tank is arranged on the inner surface of the funnel-shaped wall surface, two ends of the spiral reaction tank are communicated with a water inlet at the upper part and a water outlet at the bottom of the funnel-shaped wall surface, a piezoelectric film is attached to and covered on the spiral reaction tank, a hydroelectric generator is arranged at the water outlet, and a xenon lamp is arranged above the funnel-shaped wall surface and connected with the hydroelectric generator.
Furthermore, the spiral reaction tank is of a brick-concrete structure with the wall surface as the tank edge, mortar is plastered, and impermeable materials are coated on the periphery of the spiral reaction tank.
Furthermore, a plurality of piezoelectric film fixers are arranged in the spiral reaction tank at intervals to fix the piezoelectric films.
Furthermore, the piezoelectric film is of a non-centrosymmetric structure and is made of one or more of perovskite type piezoelectric materials, layered bismuth materials and organic piezoelectric materials.
Further, the hydroelectric generator is connected with an electricity storage device.
Furthermore, the electricity storage equipment is connected with a driving water pump, is connected with the water outlet, and conveys the substandard wastewater to the water inlet for secondary treatment.
Further, the gradient of the funnel-shaped wall surface is 1 to 1.5; the radius is 1-2 m; the cross section area of the spiral reaction tank is 0.0025 to 0.01m 2 。
Furthermore, the water inlet is provided with a flow control opening and closing device, and the flow of the waste water is 0.011-0.076 m 3 /s。
The working principle is as follows: wastewater enters the spiral reaction tank through the water inlet, when a piezoelectric film arranged in the reaction tank is subjected to the action of water flow vortex-induced shearing force, the piezoelectric film deforms to a certain degree, a polarization phenomenon occurs in the piezoelectric film, charges with opposite positive and negative polarities appear on two opposite surfaces, a built-in electric field is formed in the material, and photocatalyst electrons and holes loaded on the film are promoted to be effectively separated; meanwhile, the degraded sewage generates electric energy by utilizing a hydraulic power generation principle under the action of gravity, is stored and utilized, is supplied to a xenon lamp, generates free radicals under the irradiation of xenon lamp light, and generates an oxidation-reduction reaction on the surface of the membrane, thereby achieving the effect of degrading pollutants.
Has the advantages that: compared with the prior art, the invention effectively utilizes the water flow to drive the piezoelectric film to generate the piezoelectric effect, converts the mechanical energy of the water flow acting on the surface of the piezoelectric structure unit into chemical energy and is used for degrading pollutants; meanwhile, mechanical energy is converted into electric energy by utilizing a hydroelectric generation principle and is collected and utilized; the invention has the advantages of simple structure, easy realization, energy saving and environmental protection, saves the cost and improves the working efficiency compared with the traditional photocatalysis device, and can obtain huge economic benefit because of energy supplement and longer working life.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of a funnel-shaped wall of the present invention;
FIG. 3 is a sectional view of a funnel-shaped wall of the present invention.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation as shown in fig. 1-3 comprises a funnel-shaped wall surface 1, wherein a spiral reaction tank 2 is arranged on the inner surface of the funnel-shaped wall surface 1, the spiral reaction tank 2 is of a brick-and-concrete structure with the wall surface as a tank edge, mortar is plastered, and impermeable materials are coated on the periphery of the brick-and-concrete structure. Two ends of the spiral reaction tank 2 are communicated with a water inlet 101 in the upper part of the funnel-shaped wall surface 1 and a water outlet 102 in the bottom part of the funnel-shaped wall surface 1, the piezoelectric film 3 is attached to the spiral reaction tank 2, and a plurality of piezoelectric film fixing devices 6 are arranged in the spiral reaction tank 2 at intervals to fix the piezoelectric film 3.
The piezoelectric material has a non-centrosymmetric structure and comprises zinc oxide (ZnO), perovskite type piezoelectric material such as barium titanate (BaTiO) 3 ) (ii) a Two-dimensional ultra-thin materials, e.g. few layers of molybdenum disulfide (MoS) 2 ) Molybdenum selenide (MoSe) 2 ) Tungsten sulfide (WS) 2 ) Etc.; layered bismuth-based materials, e.g. bismuth oxyiodate (BiOIO) 3 ) Bismuth oxychloride (BiOCl), etc., and organic piezoelectric materials such as polyvinylidene fluoride (PVDF); the material is selected from one or more of them.
The water outlet 102 is provided with a hydroelectric generator 4, a xenon lamp 5 is arranged above the funnel-shaped wall surface 1 and connected with the hydroelectric generator 4, the hydroelectric generator 4 is connected with an electric storage device 7, the electric storage device 7 is connected with a driving water pump and connected with the water outlet 102, and the substandard wastewater is conveyed to the water inlet 101 for secondary treatment.
Under the impact action of water flow, the impeller of the hydroelectric generator rotates, so that electricity is generated. And then, the available electric energy is transmitted to electric equipment, namely a xenon lamp light source, through the voltage transformation output device, and the redundant electric energy is transmitted to the electric energy storage equipment for storage through the voltage transformation output device.
When the film is subjected to the action of water flow vortex-induced shearing force, the film is deformed to a certain degree, a polarization phenomenon occurs in the piezoelectric film layer, charges with opposite positive and negative polarities appear on two opposite surfaces, and a built-in electric field is formed in the material to promote the effective separation of electrons and holes of the photocatalyst loaded on the film; under the irradiation of a xenon lamp, free radicals are generated, and oxidation-reduction reaction is carried out on the surface of the membrane, so that the effect of degrading pollutants is achieved. Meanwhile, the degraded sewage generates electric energy by utilizing a hydraulic power generation principle under the action of gravity and is stored and utilized.
The gradient of the funnel-shaped wall surface 1 is 1-1.5; the radius is 1-2 m; the cross section area of the spiral reaction tank 2 is 0.0025 to 0.01m 2 。
The power of the xenon lamp light source is 300W, and according to a water turbine generating capacity calculation formula:
N＝9.81×Q×H×η
wherein: n-output mechanical power (W)
Q-flow (m) 3 /s)
H-head (m)
Eta-generator efficiency, is 0.7-0.9
Therefore, in order to meet the basic working electricity demand of the xenon lamp, the flow rate needs to be controlled to be not less than 0.011m 3 The water inlet 101 is provided with a flow control opening and closing device, and the flow of the waste water is 0.011-0.076 m 3 /s。
Claims (8)
1. A piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation is characterized in that: the device is characterized by comprising a funnel-shaped wall surface (1), wherein a spiral reaction tank (2) is arranged on the inner surface of the funnel-shaped wall surface (1), two ends of the spiral reaction tank (2) are communicated with a water inlet (101) in the upper part of the funnel-shaped wall surface (1) and a water outlet (102) in the bottom of the funnel-shaped wall surface, a piezoelectric film (3) is attached to the inner side of the spiral reaction tank (2), a hydroelectric generator (4) is arranged at the position of the water outlet (102), and a xenon lamp (5) is arranged above the funnel-shaped wall surface (1) and connected with the hydroelectric generator (4).
2. The piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation as recited in claim 1, wherein: the spiral reaction tank (2) is of a brick-concrete structure with the wall surface as the tank edge, mortar is plastered, and impermeable materials are coated on the periphery of the brick-concrete structure.
3. The hydro-power generation based piezo-photocatalytic pollutant degradation device of claim 1, wherein: a plurality of piezoelectric film fixers (6) are arranged in the spiral reaction tank (2) at intervals to fix the piezoelectric films (3).
4. The piezoelectric-photocatalytic pollutant degradation device based on hydroelectric power generation as recited in claim 1, wherein: the piezoelectric film (3) is of a non-centrosymmetric structure and adopts one or more of perovskite type piezoelectric materials, layered bismuth materials and organic piezoelectric materials.
5. The hydro-power generation based piezo-photocatalytic pollutant degradation device of claim 1, wherein: the hydroelectric generator (4) is connected with an electricity storage device (7).
6. The hydro-power generation based piezo-photocatalytic pollutant degradation device of claim 5, wherein: the electricity storage equipment (7) is connected with a driving water pump, is connected with the water outlet (102), and conveys the substandard wastewater to the water inlet (101) for secondary treatment.
7. The hydro-power generation based piezo-photocatalytic pollutant degradation device of claim 1, wherein: the gradient of the funnel-shaped wall surface (1) is 1-1.5; the radius is 1-2 m; the cross sectional area of the spiral reaction tank (2) is 0.0025 to 0.01m 2 。
8. The hydro-power generation based piezo-photocatalytic pollutant degradation device of claim 7, characterized by: the water inlet (101) is provided with a flow control opening and closing device, and the flow of the waste water is 0.011-0.076 m 3 /s。
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| CN110165243A (en) * | 2019-05-30 | 2019-08-23 | 大连理工大学 | A kind of novel piezoelectric material building photocatalysis automatic bias pollution control system |
| CN111196623A (en) * | 2020-01-20 | 2020-05-26 | 暨南大学 | Novel water vortex-piezoelectric self-driven sewage treatment micro-reactor and treatment method thereof |
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| US20190175778A1 (en) * | 2017-12-08 | 2019-06-13 | National Tsing Hua University | Composite structure and method for manufacturing the same, method for degrading organics and method for sterilizing |
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| CN110165243A (en) * | 2019-05-30 | 2019-08-23 | 大连理工大学 | A kind of novel piezoelectric material building photocatalysis automatic bias pollution control system |
| CN111196623A (en) * | 2020-01-20 | 2020-05-26 | 暨南大学 | Novel water vortex-piezoelectric self-driven sewage treatment micro-reactor and treatment method thereof |
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