CN110272086A - A kind of fixed bed reactors based on photocatalysis film - Google Patents
A kind of fixed bed reactors based on photocatalysis film Download PDFInfo
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- CN110272086A CN110272086A CN201810216516.8A CN201810216516A CN110272086A CN 110272086 A CN110272086 A CN 110272086A CN 201810216516 A CN201810216516 A CN 201810216516A CN 110272086 A CN110272086 A CN 110272086A
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- water
- fixed bed
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- bed reactors
- photocatalysis
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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
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention relates to a kind of fixed bed reactors based on photocatalysis film, belong to photocatalysis water treatment field.The reactor includes: 1) pedestal, bracket；2) the mechanical bed of adjustable inclination, by screw and nut, Interal fixation in pedestal；3) film of loaded optic catalyst is fixed on light reaction plate by light reaction plate；4) simulated solar light reaction instrument, reaction system is covered, and top is equipped with lamps and lanterns and is used to provide on light source, with the tiltable machinery bed keeping parallelism to reaction system；5) circulating water line system, including peristaltic pump, flowmeter, current divider, water pump is used to provide power to circulation waterway.The features such as photocatalysis recirculation reactor photocatalysis effect provided by the invention is good, structure is simple, separation easy to operate, avoiding photochemical catalyst, Miniaturizable are applied to sewage treatment, realize effective degradation treatment to organic matter poisonous and hazardous in waste water.
Description
Technical field:
The present invention relates to technical field of waste water processing, in particular to a kind of fixed bed reactors based on photocatalysis film.
Background technique:
In recent years, with the fast development of chemical industry, Chemical Manufacture along with various toxic Recalcitrant chemicals it is a large amount of
Into environment, lead to deteriorating water quality, water environmental problems are increasingly prominent.Organic wastewater difficult to degrade is still lacked effectively at present
Governing measure, although traditional processing method achieves certain effect, but processing cost is high, and there are secondary pollutions.Therefore,
Find it is a kind of be simple and efficient, environmentally protective processing technique it is especially urgent.Photocatalysis technology is with low energy consumption, operation is convenient, makes
The advantages that wide and without secondary pollution with range, while it only needs sunlight that can degrade a variety of pollutions in environment as the energy
Object, so be concerned.
But the research of photocatalysis technology is concentrated mainly on photochemical catalyst at present, and for water process can be used for
Photoreactor, the Photoreactor that can especially apply to actual production is extremely few.Photochemical catalyst is dfficult to apply to actual production
Problem essentially consist in: fine catalyst partial size is smaller, it is difficult to separate and recover and come out from catalystic converter system, be easy to cause light
The loss of catalyst constrains its practical application in water process.
Photo catalysis reactor has become the preferred process system for eliminating environmental contaminants in water body, is that photocatalysis industry is answered
Development priority.20 th century America end of the eighties, scale using photo catalysis reactor handled underground, surface water, Japan 90
Start at the beginning of age with the heavy metal in apparatus for photoreaction processing tap water.In recent years, China researcher also carries out in succession
The development work of photo catalysis reactor.Cao Changchun etc. devises a kind of by ultraviolet lamp and load TiO2Aluminium sheet composition reaction
Device applies collaboration electric field in reactor upper and lower ends, and for handling dyestuff degradation, effect is substantially better than general photocatalysis drop
Solution.But since the industrial application of China's photo catalysis reactor is at the early-stage, biggish gap is still had with developed country.
Sun Photoreactor is mainly include the following types: parabolic trough type Photoreactor, dual thin layer Photoreactor, composite parabolic
Assemble Photoreactor and film fixed bed reactors (TFFBR) etc..Chinese patent (CN205820932U) discloses a kind of suspension-
Hybrid photo catalysis reactor is loaded, photochemical catalyst is filled in filler chamber and is carried on sleeve outer wall, solves collection flowing
The TiO of phase and stationary phase2Photochemical catalyst is in integrated problem, but ultraviolet light peneration is poor in reactor, and utilization rate is low, this causes
The processing capacity of the reactor is limited.Chinese patent (CN1587085A) discloses a kind of drum photocatalysis reactor,
Rotating cylinder inwall is coated with TiO2Film or in rotating cylinder outer wall suspension TiO2Moisture film, the reactor can be such that light urges by adjusting rotating cylinder revolving speed
Agent and waste water are uniformly distributed, but this reactor utilization rate of ultraviolet light is low, furthermore is difficult to be separated from the water back there are still catalyst
It receives.
Summary of the invention:
The present invention is directed to be that it is anti-to provide a kind of fixed bed based on photocatalysis film to solve deficiency existing for the above technology
Answer device.The reactor have construction cost is low, mass-transfer efficiency is high, light utilization efficiency is high, catalyst is easily isolated and recycled, realize oxygen to
The features such as liquid film effectively shifts.
In order to realize object of the present invention and further advantage, a kind of Photoreactor is provided, comprising:
Pedestal, bracket are used to support and solid mechanical bed；
The mechanical bed of adjustable inclination is connected with bracket by shaft, and it is anti-to place light for adjustable inclination and support
Answer plate；
Light reaction plate, photocatalyst film is fixed thereon, and provides place for light-catalyzed reaction；
Simulated solar light reaction instrument, including reaction hood and lamps and lanterns, wherein reaction hood is used to cover reaction system, top
Lamps and lanterns are used to provide light source to reaction system；
Circulating water line system, wherein water pump is used to provide power to entire reaction system, and flowmeter is for controlling reaction
The water velocity of system.
Preferably, wherein the mechanical bed is connect by shaft with bracket, and mechanical bed is adjusted by rotating shaft
Inclination angle, to change residence time of the waste water on light reaction plate.
Preferably, wherein partition, Gao Yuewei 3mm, it is therefore intended that enable pending water are mounted on the light reaction plate
Photocatalysis film is flowed uniformly through, thin water layer is formed on its surface, so that Organic substance in water and immobilized film photocatalyst fill
Tap touching, realizes effective transfer of the oxygen to liquid film；The photocatalysis film is laid on partition light reaction plate below；It is described
Light reaction plate upper end be connected with current divider, lower end is infundibulate water outlet.
Preferably, wherein the catch basin bottom side is equipped with outlet pipe, the water outlet of the outlet pipe and water pump into
The mouth of a river is connected；The water pump provides power for entire circular response system.
Preferably, wherein the supply flume bottom end is equipped with water inlet, and bottom side is equipped with water outlet；The water supply
The connection of the water outlet of slot water inlet and water pump, the water outlet of supply flume are connected with the water inlet of flowmeter；The flowmeter
Range is 0~1L/min.
Preferably, wherein the water outlet of the flowmeter is connected with the water inlet of current divider, and the current divider goes out
The screen-aperture of water is about 1 cun.
Preferably, wherein the lamps and lanterns in the simulated solar light reaction instrument are placed in cold-trap；The cold-trap
It is installed on above light reaction plate by height-adjustable iron chains.
Preferably, wherein the lamps and lanterns are parallel with light reaction plate；The lamps and lanterns are xenon lamp.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram for the fixed bed reactors based on photocatalysis film taken in the embodiment of the present invention
In figure:
1, pedestal；2, bracket；3, mechanical bed；4, shaft；5, partition；6, light reaction plate；7, cold-trap；
8, lamps and lanterns；9, iron chains is adjusted；10, reaction hood；11, landing tee hydrophone；12, flowmeter；13, supply flume；
14, water pipe；15, circulating pump；16, catch basin.
Fig. 2 is the relationship that incretion interferent BPA uses degradation rate and time of the photo catalysis reactor under different in flow rate.
Fig. 3 is that the artificial sewage of the BPA containing incretion interferent uses the degradation rate of photo catalysis reactor at various ph values
With the relationship of time.
Specific embodiment:
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Formula is to the detailed description of the invention.
Embodiment 1:
As shown in Figure 1, a kind of fixed bed reactors based on photocatalysis film, mechanical bed, light reaction plate, simulated solar irradiation
React instrument, circulating water line system.The mechanical bed is fixed on bracket base by screw mother, shaft；The light is anti-
Answering plate includes partition and the photocatalyst film that is laid in below partition；The simulated solar light reaction instrument includes lamps and lanterns and anti-
It should cover, wherein lamps and lanterns hang on light reaction plate top and therewith keeping parallelism；The circulating water line system includes water pipe, compacted
Dynamic pump, flowmeter, current divider, catch basin and supply flume.
To improve catalytic efficiency, in the present embodiment, lamps and lanterns are with light reaction plate at a distance from no more than 10cm.
In this implementation case, the partition on light reaction plate can play the work of buffering to the waste water to be processed come out in supply flume
With enabling water flow to flow uniformly through photocatalysis film and be formed on thin water layer, while reducing water flow and being washed away to film；Separately
Outside, since the water layer thickness for flowing through film is very thin, Organic substance in water comes into full contact with film photocatalyst, realizes oxygen to liquid film
Effective transfer, improve reaction rate.
In the present embodiment, light reaction plate, supply flume and catch basin are all to select unorganic glass manufacture, and inner wall all uses silane
Change reagent processing, it is therefore intended that prevent solution from adsorbing residual in light reaction plate, sink.
In the present embodiment, photocatalysis film used is glass fabric load bismuth oxyiodide photocatalyst film；Made
Lamps and lanterns are 800w xenon lamp.
Embodiment: 2:
The reactor is used to handle the BPA solution containing 20mg/L.It is powered to xenon lamp, keeps xenon lamp thin to photocatalysis is flowed through
The solution of film is irradiated；2L solution is added in supply flume, adjusting water discharge speed by flowmeter is 150mL/min,
It is allowed to be circulated through the reactor under the action of water pump.Experimental result as shown in Fig. 2, under different flow velocitys BPA degradation rate,
It can be seen that degradation effect is best when flow velocity is 150mL/min.
Embodiment 3:
The reactor is used to handle the artificial sewage of the BPA containing 20mg/L.It gives xenon lamp to be powered, makes xenon lamp to flowing through light
The solution of catalytic film is irradiated；2L solution is added in supply flume, adjusting water discharge speed by flowmeter is 150mL/
Min adjusts the Ph of solution, is allowed to be circulated through the reactor under the action of water pump.Experimental result is as shown in figure 3, in difference
PH value under degradation rate, it can be seen that pH value be 5~11 when degradation effect it is preferable and best in 7 or so effect of pH.
Claims (9)
1. a kind of fixed bed reactors based on photocatalysis film characterized by comprising
Pedestal, bracket are used to support and solid mechanical bed；
The mechanical bed of adjustable inclination is connected with bracket by shaft, places light reaction plate for adjustable inclination and support；
Light reaction plate, photocatalyst film is fixed thereon, and provides place for light-catalyzed reaction；
Simulated solar light reaction instrument, including reaction hood and lamps and lanterns, wherein reaction hood is for covering reaction system, the lamps and lanterns at top
For providing light source to reaction system；
Circulating water line system, wherein water pump is used to provide power to entire reaction system, and flowmeter is for controlling reaction system
Water velocity.
2. as described in claim 1 based on the fixed bed reactors of photocatalysis film, which is characterized in that the mechanical bed is logical
It crosses shaft to connect with bracket, the inclination angle of mechanical bed is adjusted by rotating shaft.
3. as described in claim 1 based on the fixed bed reactors of photocatalysis film, which is characterized in that the light reaction plate
On be mounted with partition, Gao Yuewei 3mm；The photocatalysis film is laid on partition light reaction plate below；The light is anti-
Plate upper end is answered to be connected with current divider, lower end is infundibulate water outlet；The water outlet is connected with catch basin.
4. the fixed bed reactors as claimed in claim 1 or 3 based on photocatalysis film, which is characterized in that described catchments
Trench bottom side is equipped with outlet pipe, and the water outlet of the outlet pipe is connected with the water inlet of water pump.
5. the fixed bed reactors as described in claim 1 or 4 based on photocatalysis film, which is characterized in that the water supply
Slot bottom end is equipped with water inlet, and bottom side is equipped with water outlet；The water outlet of the supply flume water inlet and water pump connects, and supplies water
The water outlet of slot is connected with the water inlet of flowmeter；The flowmeter range is 1L/min.
6. the fixed bed reactors as claimed in claim 1 or 5 based on photocatalysis film, which is characterized in that the flow
The water outlet of meter is connected with the water inlet of current divider.
7. the fixed bed reactors as described in claim 1 or 6 based on photocatalysis film, which is characterized in that the shunting
The screen-aperture of device water outlet is about 1 cun.
8. as described in claim 1 based on the fixed bed reactors of photocatalysis film, which is characterized in that the simulated solar
Lamps and lanterns in light reaction instrument, are placed in cold-trap；The cold-trap is installed on light reaction plate by height-adjustable iron chains
Top.
9. the fixed bed reactors as claimed in claim 1 or 8 based on photocatalysis film, which is characterized in that the lamps and lanterns
It is parallel with light reaction plate；The lamps and lanterns are xenon lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810216516.8A CN110272086A (en) | 2018-03-15 | 2018-03-15 | A kind of fixed bed reactors based on photocatalysis film |
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| CN201810216516.8A CN110272086A (en) | 2018-03-15 | 2018-03-15 | A kind of fixed bed reactors based on photocatalysis film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023979A (en) * | 2020-11-18 | 2021-06-25 | 中科院过程工程研究所南京绿色制造产业创新研究院 | Fenton oxidation treatment photocatalytic membrane reactor and treatment method thereof |
| CN113976617A (en) * | 2021-11-08 | 2022-01-28 | 中国科学院沈阳应用生态研究所 | Device and method for degrading petroleum hydrocarbon in soil by simulating sunlight irradiation |
| CN115991516A (en) * | 2023-02-14 | 2023-04-21 | 河海大学 | Photocatalysis water body purifying synchronous oxygenation device |
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Patent Citations (6)
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| US5862449A (en) * | 1996-05-30 | 1999-01-19 | The United States Of America As Represented By The United States Department Of Energy | Photocatalytic reactor |
| CN101091900A (en) * | 2007-04-13 | 2007-12-26 | 西安交通大学 | Solar energy photocatalytic reactor based on condenser of composite paraboloid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023979A (en) * | 2020-11-18 | 2021-06-25 | 中科院过程工程研究所南京绿色制造产业创新研究院 | Fenton oxidation treatment photocatalytic membrane reactor and treatment method thereof |
| CN113976617A (en) * | 2021-11-08 | 2022-01-28 | 中国科学院沈阳应用生态研究所 | Device and method for degrading petroleum hydrocarbon in soil by simulating sunlight irradiation |
| CN115991516A (en) * | 2023-02-14 | 2023-04-21 | 河海大学 | Photocatalysis water body purifying synchronous oxygenation device |
| CN115991516B (en) * | 2023-02-14 | 2024-05-10 | 河海大学 | Photocatalysis water body purifying synchronous oxygenation device |
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Application publication date: 20190924 |