CN207451670U - Oily wastewater purification pot based on photocatalysis and electrolysis tech - Google Patents
Oily wastewater purification pot based on photocatalysis and electrolysis tech Download PDFInfo
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- CN207451670U CN207451670U CN201720720384.3U CN201720720384U CN207451670U CN 207451670 U CN207451670 U CN 207451670U CN 201720720384 U CN201720720384 U CN 201720720384U CN 207451670 U CN207451670 U CN 207451670U
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Abstract
The utility model is related to the oily wastewater purification pots based on photocatalysis and electrolysis tech, the oily wastewater purification pot includes shell, protecgulum, rear cover, photocatalytic plate, ultraviolet lamp tube and electrode, it is front and rear to be respectively equipped with front/rear cover using cylindrical housing, it is easily installed, dismantles and moves use.Inside has circular and surface to have the structures such as the photocatalytic plate, annular ultraviolet lamp tube, electrode of porous structure.The utility model is combined photocatalysis technology with electrolysis tech, can effectively purify the organic substance in sewage, and the microorganisms such as bacterium, the virus in sewage can be inactivated, good to oily wastewater clean-up effect, efficient.
Description
Technical field
The utility model belongs to sewage treatment field, specifically, be related to based on photocatalysis and electrolysis tech containing greasy dirt
Water purification tank.
Background technology
With industrial development, the industrial departments such as oil, petrochemical industry, steel, coking, gas generating station, mechanical processing row
A large amount of oily wastewaters are released, endanger ecological environment, undesirable shadow is all generated to the mankind, animal and plant or even the entire ecosystem
It rings.Oily substance in sewage can discharge can form oil film in the water surface afterwards in water, reduce content of oxygen dissolved in water, water body becomes
It is smelly, influence algae photosynthesis and the growth of other aquatiles in water.The cheek is attached to for the biology in water body such as fish, greasy dirt
On can make fish death by suffocation.If being directly discharged in soil, Soil Microorganism metabolism can be influenced, reduces agricultural product quality, very
To making crops dead and polluted underground water.
Water ballast is and the water specially injected in order to which ship is kept to balance.Water ballast brings alien species except Chang Rongyi
Beyond invasion, it is also easy to that environment is caused directly to pollute.Not only there are the polluters such as greasy dirt in water ballast, also comprising a large amount of bacteriums
And different biological ovum and larva etc. are, it is necessary to which disinfection handles that generation environment is avoided to pollute.
Oily wastewater purification pot based on photocatalysis and electrolysis tech is based on photocatalysis technology and electrolysis processing waste water skill
The device that art purifies oily wastewater.Photocatalysis air-cleaning technology is based on Semiconductive Theory, catalyzing and degrading pollutant
Principle be：Under light source irradiation, when the photon energy that catalysis material absorbs is greater than or equal to its energy gap, sky can be generated
One electronics pair of cave, when one electronics of hole is to being moved to catalyst surface, with adsorbing the pernicious gas molecule in catalyst surface
Generation redox reaction ultimately generates the substances such as nontoxic water and carbon dioxide.The principle of Treatment of Wastewater by Electrolysis is
Make in waste water that by electrolytic process on positive and negative the two poles of the earth respectively oxidation occurs for harmful substance and reduction reaction transforms into harmless object
Matter is to realize the method for purification of waste water.Shortcoming that there are many existing oil-containing sewage purifying devices based on photocatalysis or electrolysis, such as
Inconvenience is mobile to be used, and not using closure, is easily caused organic matter volatilization in water body and is generated secondary pollution, and purification efficiency is low,
The shortcomings of purification is not thorough, complex process.
The content of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, in view of the above-mentioned problems, propose based on photocatalysis and
The oily wastewater purification pot of electrolysis tech, it is front and rear to be respectively equipped with front/rear cover using cylindrical housing, it is easily installed, dismantles and moves
It is dynamic to use.Inside has circular and surface to have the structures such as the photocatalytic plate, annular ultraviolet lamp tube, electrode of porous structure.This practicality
It is new to be combined photocatalysis technology with electrolysis tech, the organic substance in sewage can be effectively purified, and can be in sewage
The microorganisms such as bacterium, virus are inactivated, good to oily wastewater clean-up effect, efficient.
The technical purpose of the utility model is to be achieved by the following technical programs：
Oily wastewater purification pot based on photocatalysis and electrolysis tech, including shell, protecgulum, rear cover, photocatalytic plate, ultraviolet
Fluorescent tube and electrode,
Shell is tubular structure, and radial section is circle, and the internal layer edge setting of shell is free interlayer, is set in empty interlayer
There is cable；
The radial parallel of shell is provided with photocatalytic plate inside the housing, the plane of photocatalytic plate is circular, rounded face
Product is identical with the area of section of shell, and circular hole is provided on photocatalytic plate, light is provided on two side planes of photocatalytic plate
Catalyst layer；Titanium dioxide optical catalyst is provided in photocatalyst layer；
Ultraviolet lamp tube is provided between adjacent photocatalytic plate inside the housing, ultraviolet lamp tube is annular in shape, along outer casing inner wall
It sets, the ultraviolet lamp tube is connected with cable；
The front end of shell is provided with protecgulum, rear cover is provided in the rear end of shell, protecgulum has identical knot with rear cover
Structure sets there are two water inlet in protecgulum plane, is set in rear cover plane there are two water outlet, water inlet (water outlet)
Edge is provided with annular protrusion, water inlet (water outlet) planar central is provided with electrode fixing holes, at water inlet (water outlet)
Plane sets inlet opening around the center of circle, and two electrodes are set between the water inlet of protecgulum and the water outlet of rear cover, and electrode passes through
The round hole of photocatalytic plate, the both ends of electrode are arranged in electrode fixing holes, and electrode surface is provided with the two of composite nitride carbon
TiOx nano belt electrode material layer.
In the above-mentioned technical solutions, the quantity of the photocatalytic plate is 4, and respectively the first photocatalytic plate, the second light is urged
Change plate, the 3rd photocatalytic plate and the 4th photocatalytic plate, four photocatalytic plates and divide space of enclosure etc. to quinquepartite.
In the above-mentioned technical solutions, the circular hole number is 8, and 8 round holes are distributed in photocatalytic plate with circle
On the circular periphery of the heart.
In the above-mentioned technical solutions, the inlet opening is water-drop-shaped, and quantity is 6, along electrode fixing holes symmetrically and evenly
Distribution.
In the above-mentioned technical solutions, the circular bore dia is more than the diameter of electrode.
In the above-mentioned technical solutions, the electrode length is identical with outer cover length.
In the above-mentioned technical solutions, the titanium dioxide optical catalyst select the flaky nanocrystalline of titanium dioxide, nanotube,
The titanium dioxide of nano wire, graphene and composite titania material or platinum doping remodeling, the titanium-dioxide photo is urged
Agent is loaded by following methods on photocatalytic plate surface, such as Best-Effort request, magnetron sputtering, colloidal sol-gel.Pass through
Possess larger titanium dichloride load area after load, on photocatalytic plate, photocatalysis removal pollutants in air can be improved
Efficiency, and avoid influence of the secondary pollution that light-catalyzed reaction generates to environment.
When the preparation and load of above-mentioned carry out titanium dioxide optical catalyst, reference is in the prior art in relation to different type dioxy
Change the preparation method and its carrying method of titanium, such as
(1) flaky nanocrystalline：
Synthesis and Characterization of TiO2 Nano-crystalline with Differ
ent Morphologies by Low-temper atur e Hydrothermal Method；ZHANG Xia, ZHAO
Yan, ZHANG Cai-Bei, MENG Hao；Acta Phys.-Chim.Sin.,2007, 23(6):856-860
(2) graphene and composite titania material：
Preparation and photoactivity of graphene/TiO2 hybrid photocatalysts
under visible light irraditon；LIU Hui,DONG Xiao-nan,SUN Chao-chao；Journal of
Shaannxi University ofScience&Technolog:1000-5811(2013)01-0023-06
(3) titanium dioxide of platinum doping remodeling：
PhotocatalyticActivity ofTiO2 Thin Film Dopedby Pt with Different
Distribution；WANG,Jun-Gang LI,Xin-Jun,ZHENG,Shao-Jian HE, Ming-Xing XU；ACTA
CHIMICA SINICA No.7,592~596
(4) nanotube：
Research Advances in TiO2Nanotubes；Kong Xiangrong,Peng Peng,Sun
Guixiang,Zheng Wenjun；ACTA CHIMICA SINICA No.8,1439~1444
(5) nano wire：
Recent Process in Metal-doped Titanium Oxide Nanowires；DU Jun,SHI
Jiaguang,HUANG Jingjing,ZHANG Wenlong,LIU Fei；Material Leader 2 months 2012
(6) Best-Effort request：
Dip-coating method prepares TiO2The research of film and its photocatalysis performance；Nanchang is wished, Quan Wurong, Zhang Jingai, Zhao Cheng
Man；Solar energy journal Vol.21.No.4
(7) magnetron sputtering：
AFM Analysis on Ti02 Low-E Thin Films Deposited by Magnetron
Sputtering；ZHENG Zi-yao, WANG Zhu, LI Chun-ling, ZHAO Qing-nan； SEMICoNDUCTOR
oPTOELECTRoNICS V01.26No.5
(8) colloidal sol-gel：
Sol-gel preparation and photocatalytic activities of TiO2
nanoparticles；QIAN Dong,YAN Zao-xue,SHI Mao；The Chinese Journal of Nonferrous
Metals,NO.1004 0609(2005)05 0817 06
In the above-mentioned technical solutions, the preparation side of the titanium dioxide nano-belts electrode material layer of the composite nitride carbon
Method, as described below：
The titanium dioxide nano-belts for weighing 25-30 mass point are placed in agate mortar and are ground to no apparent granular sensation,
The distilled water of the PEG2000 of addition 40-60 mass point, 100-120 mass point, the absolute ethyl alcohol of 400-500 mass point, fully
It is ground to that slurries are sticky, the slurries prepared is uniformly applied on photocatalytic plate, the film standing and drying 12- that will be prepared
16h is placed in Muffle furnace, carries out being warming up to 400-600 DEG C at ambient temperature with the speed of 2 DEG C/min, at 400-600 DEG C
Under the conditions of calcine 1-3h.
The preparation method of the titanium dioxide nano-belts, as described below：
Step 1: anatase powder is placed under alkaline environment, 160 DEG C to 200 DEG C are warming up to, hydro-thermal reaction 40 to 56h takes
Suspension is washed using the method for suction filtration after reaction, and the method filtered carries out pickling, dries 10-14h after finishing,
Under the conditions of 750-850 DEG C, 1-3h is calcined, is cooled to room temperature, complete TiO2The preparation of nanobelt.
Step 2: the thiocarbamide of 5-10 mass point is taken to be dissolved in distilled water, the TiO of 0.1 mass point is added in2After nanobelt, surpass
Sound is simultaneously dried, and by dried sample, 2-5 h is calcined under conditions of 400-500 DEG C, nitrogen carbon mass fraction, which is made, is
The TiO of 50%-56%2Nanometer carry sample.
In the above-mentioned technical solutions, in step 1, the warming temperature of the hydro-thermal reaction is preferably 175 DEG C to 185
DEG C, reaction temperature is preferably 46-50h, and the temperature of the calcining is preferably 690-700 DEG C, and calcining heat is preferably 1-2h.
In the above-mentioned technical solutions, in step 2, the calcining heat is preferably 400-420 DEG C.
The application method of oily wastewater purification pot based on photocatalysis and electrolysis tech：
Step 1：Water pipe is connected in inlet and outlet；
Step 2：Oily wastewater is passed through by water inlet in the oily wastewater purification pot based on photocatalysis and electrolysis tech
Redox reaction occurs for portion, the pollutant in oily wastewater under electrolysis, while under ultra violet lamp, in water body
Polluter is degraded on the photocatalyst layer on photocatalytic plate surface, and the bacterium under the irradiation of ultraviolet lamp in water body is killed
Extremely, disinfection has been haved the function that.After continuous several photocatalytic plates in purifier, pass through by the oily wastewater of purification
The water outlet outflow covered afterwards.
Compared with prior art, the beneficial effects of the utility model are：
Oily wastewater purification pot based on photocatalysis and electrolysis tech uses enclosed construction, and purifier shell is with before
Lid, rear cover make photocatalysis and cell reaction be happened in enclosed environment, reduce volatile materials and cause secondary pollution to environment
Risk.
It, can since electrode and photochemical catalyst as usage time increases have consumption and deactivation phenomenom, it is necessary to timing is replaced
The protecgulum and rear cover of dismounting make more changing device inner body, are more convenient inside cleaning plant, the design of integral type is more easy to device
It carries and installs.
Photocatalysis technology is combined by the oily wastewater purification pot based on photocatalysis and electrolysis tech with electrolysis tech, is improved
To the purification efficiency of oily wastewater.Ultraviolet lamp between two pieces of photocatalytic plates is installed and not only increases photochemical catalyst by ultraviolet light
Irradiated area, ultraviolet lamp can also kill the bacterium in water body, play the role of disinfection.The partition design of multiple photocatalytic plates carries
The high contact area of photocatalyst layer and sewage improves the purification efficiency of sewage.
Oily wastewater purification pot based on photocatalysis and electrolysis tech effectively increases the purification efficiency of oily wastewater, to contain
The purification of oily water provides a kind of practicable method, and the oily wastewater purification pot based on photocatalysis and electrolysis tech is to supply
Efficiently utilize luminous energy, the multifunctional oil-contained waste water cleaning system of lasting efficient stable operating.
Photocatalysis technology with electrolysis tech is combined, can effectively purify the organic substance in sewage, and can be to sewage
In the microorganisms such as bacterium, virus inactivated, it is good to oily wastewater clean-up effect, it is efficient.
Description of the drawings
Fig. 1 is the general structure schematic diagram of oily wastewater purification pot of the utility model based on photocatalysis and electrolysis tech；
Fig. 2 is the structure after the transverse direction of oily wastewater purification pot of the utility model based on photocatalysis and electrolysis tech is splitted
Schematic diagram；
Fig. 3 is the structure top view of oily wastewater purification pot of the utility model based on photocatalysis and electrolysis tech；
Fig. 4 is the structure front view of oily wastewater purification pot of the utility model based on photocatalysis and electrolysis tech；
Fig. 5 is sewage purifying cylinder test pipeline attachment structure schematic diagram.
Fig. 6 is pure phase anatase TiO in embodiment2, pure g-C3N4And g-g-C3N4Compound quantity is the XRD spectrums of 50% sample
Figure, 1 is TiO2, 2 be TCN50, and 3 be g-C3N4。
Fig. 7 is pure phase anatase TiO in embodiment2Nanobelt and g-C3N4 compound quantities are schemed for the SEM of 50% sample.
Fig. 8 is g-C in embodiment3N4Compound quantity is the TEM figures of 50% sample.
Fig. 9 is the light degradation curve of catalysis material in embodiment.
Figure 10 is the transient photocurrents curve of catalysis material in embodiment.
Wherein 1 is shell, and 2 be protecgulum, and 2-1 is annular protrusion, and 2-2 is inlet opening, and 2-3 is electrode fixing holes, 2-4 be into
The mouth of a river, 3 rear covers, 4 photocatalytic plates, 4-1 are the first photocatalytic plate, and 4-2 is the second photocatalytic plate, and 4-3 is the 3rd photocatalytic plate,
4-4 is the 4th photocatalytic plate, and 5 ultraviolet lamp tubes, 5-1 is the first ultraviolet lamp tube, and 5-2 is the second ultraviolet lamp tube, and 5-3 is ultraviolet for the 3rd
Fluorescent tube, 6 electrodes, 7 be pump inlet pressure indicator, and 8 be flow gauge (FG), and 9 be pump discharge pressure indicating gage, and 10 be heat exchange
Device, 11 be water tank, and 12 be power supply facilities, and 13 be water inlet, and 14 be water outlet, and 15 be fluid circuit, and 16 be gas piping, 17
It is sewage purifying cylinder for discharge pipe line, 18.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
Oily wastewater purification pot based on photocatalysis and electrolysis tech, including shell 1, protecgulum 2, rear cover 3, photocatalytic plate 4,
Ultraviolet lamp tube 5 and electrode 6,
Shell is tubular structure, and radial section is circle, and the internal layer edge setting of shell is free interlayer, is set in empty interlayer
There is cable；
Four photocatalytic plates are set in the interior parallel of shell, are respectively the first photocatalytic plate, the second photocatalytic plate, the 3rd
Photocatalytic plate and the 4th photocatalytic plate, four photocatalytic plates divide space of enclosure etc. to quinquepartite, and photocatalytic plate is put down
Face is circle, and circular area is identical with the area of section of shell, and eight round holes, eight round holes are provided on photocatalytic plate
It is distributed in on the circular periphery of photocatalytic plate concentric, photocatalyst layer is provided on two side planes of photocatalytic plate；
Titanium dioxide optical catalyst is provided in photocatalyst layer；
Ultraviolet lamp tube is provided between adjacent photocatalytic plate inside the housing, ultraviolet lamp tube is annular in shape, along outer casing inner wall
It sets, the ultraviolet lamp tube is connected with cable；
The front end of shell is provided with protecgulum, rear cover is provided in the rear end of shell, protecgulum has identical knot with rear cover
Structure sets there are two water inlet in protecgulum plane, is set in rear cover plane there are two water outlet, water inlet (water outlet)
Edge is provided with annular protrusion, water inlet (water outlet) planar central is provided with electrode fixing holes, at water inlet (water outlet)
Plane sets inlet opening around the center of circle, and two electrodes are set between the water inlet of protecgulum and the water outlet of rear cover, and electrode passes through
The round hole of photocatalytic plate, the both ends of electrode are arranged in electrode fixing holes, and electrode surface is provided with the two of composite nitride carbon
TiOx nano belt electrode material layer.
In the above-mentioned technical solutions, the inlet opening is water-drop-shaped, and quantity is 6, along electrode fixing holes symmetrically and evenly
Distribution.
In the above-mentioned technical solutions, the circular bore dia is more than the diameter of electrode.
In the above-mentioned technical solutions, the electrode length is identical with outer cover length.
Embodiment 1：
The titanium dioxide nano-belts electrode material layer of the composite nitride carbon is in the preparation：
The titanium dioxide nano-belts for weighing 25mg are placed in agate mortar and are ground to no apparent granular sensation, add in 40mg
PEG2000, the distilled water of 100ml, the absolute ethyl alcohol of 400ml, be fully ground it is sticky to slurries, the slurries prepared are uniform
Be applied on photocatalytic plate, the film standing and drying 12h prepared is placed in Muffle furnace, at ambient temperature with 2 DEG C/
The speed of min carries out being warming up to 400 DEG C, and 1h is calcined under the conditions of 400 DEG C.
The titanium dioxide nano-belts are in the preparation：
Step 1: anatase powder is placed under alkaline environment, 160 DEG C, hydro-thermal reaction 40h are warming up to, negating should be rear suspended
Liquid is washed using the method for suction filtration, and the method filtered carries out pickling, is dried 10h after finishing, under the conditions of 750 DEG C, is forged
1h is burnt, is cooled to room temperature, completes TiO2The preparation of nanobelt.
Step 2: the thiocarbamide of 5mg is taken to be dissolved in distilled water, the TiO of 0.1mg is added in2After nanobelt, ultrasound is simultaneously dried, will
Dried sample calcines 2h under conditions of 400 DEG C, and the TiO that nitrogen carbon mass fraction is 50% is made2Nanobelt sample
Product.
Embodiment 2：
The titanium dioxide nano-belts electrode material layer of the composite nitride carbon is in the preparation：
The titanium dioxide nano-belts for weighing 28mg are placed in agate mortar and are ground to no apparent granular sensation, add in 50mg
PEG2000, the distilled water of 110ml, the absolute ethyl alcohol of 450ml, be fully ground it is sticky to slurries, the slurries prepared are uniform
Be applied on photocatalytic plate, the film standing and drying 14h prepared is placed in Muffle furnace, at ambient temperature with 2 DEG C/
The speed of min carries out being warming up to 500 DEG C, and 2h is calcined under the conditions of 500 DEG C.
The titanium dioxide nano-belts are in the preparation：
Step 1: anatase powder is placed under alkaline environment, 180 DEG C, hydro-thermal reaction 52h are warming up to, negating should be rear suspended
Liquid is washed using the method for suction filtration, and the method filtered carries out pickling, is dried 12h after finishing, under the conditions of 800 DEG C, is forged
2h is burnt, is cooled to room temperature, completes TiO2The preparation of nanobelt.
Step 2: the thiocarbamide of 8mg is taken to be dissolved in distilled water, the TiO of 0.1mg is added in2After nanobelt, ultrasound is simultaneously dried, will
Dried sample calcines 4h under conditions of 450 DEG C, and the TiO that nitrogen carbon mass fraction is 53% is made2Nanobelt sample
Product.
Embodiment 3：
The titanium dioxide nano-belts electrode material layer of the composite nitride carbon is in the preparation：
The titanium dioxide nano-belts for weighing 30mg are placed in agate mortar and are ground to no apparent granular sensation, add in 60mg
PEG2000, the distilled water of 120ml, the absolute ethyl alcohol of 500ml, be fully ground it is sticky to slurries, the slurries prepared are uniform
Be applied on photocatalytic plate, the film standing and drying 16h prepared is placed in Muffle furnace, at ambient temperature with 2 DEG C/
The speed of min carries out being warming up to 600 DEG C, and 3h is calcined under the conditions of 600 DEG C.
The titanium dioxide nano-belts are in the preparation：
Step 1: anatase powder is placed under alkaline environment, 200 DEG C, hydro-thermal reaction 56h are warming up to, negating should be rear suspended
Liquid is washed using the method for suction filtration, and the method filtered carries out pickling, is dried 14h after finishing, under the conditions of 850 DEG C, is forged
3h is burnt, is cooled to room temperature, completes TiO2The preparation of nanobelt.
Step 2: the thiocarbamide of 10mg is taken to be dissolved in distilled water, the TiO of 0.1mg is added in2After nanobelt, ultrasound is simultaneously dried, will
Dried sample calcines 5h under conditions of 500 DEG C, and the TiO that nitrogen carbon mass fraction is 56% is made2Nanobelt sample
Product.
More than nanometer carry sample is prepared in 3 groups of embodiments there is close property, aoxidized below by way of catalysis material
Property detection method and electrochemical properties detection method carry out the verification of property to it.
Catalysis material oxidisability detection method：
Use g-C3N4/TiO2Compound photochemical catalyst, tests the efficiency of rhodamine B degradation, and test process is as follows：
(1) 0.1g rhodamine Bs are weighed to be placed in 10mL volumetric flasks, 10g/L rhodamine B concentrated solutions are made, then take 0.5mL
Concentrated solution is diluted to 500mL, and 10mg/L rhodamine B solution is made.
(2) measure 50mL rhodamine B solution to be placed in the reactor for being placed with magneton, open magnetic stirrer, then weigh 0.05g
Catalyst is placed in reactor, with tinfoil encapsulation reaction device, makes it into dark absorption phase.
(3) after secretly adsorbing 50 minutes, first time sample (3-4mL) is taken marked as No. 0 and opens xenon lamp.Then take within every 10 minutes
Sample, respectively marked as No. 1, No. 2, No. 3, No. 4, No. 5, No. 6.6 (4) centrifuge sample, centrifuge set revolution as
13000 turns/min, setting time is 15 minutes.
(5) by its absorbance of measurement of ultraviolet-visible spectrophotometer of the sample after centrifugation.
Electrochemical properties detection method：
Material is plated on FTO electro-conductive glass using film plating process described above, then electrochemistry is carried out in following method
Detection：
(1) 40mL 0.1mol/LNa are added in the reactor (sandwich can lead to recirculated cooling water water) of 50mL2SO4It is molten
Liquid；
(2) the FTO electrodes (working electrode) prepared are added with tweezers, be put into solution, it is noted that tweezers can not connect
Touch solution；
(3) Pt electrodes (to electrode) and calomel electrode (reference electrode) are put into solution, and by three electrodes and electricity
Chem workstation connects, and red clip is even to electrode, and white clip connects reference electrode, and green clip connects working electrode；
(4) electrochemical workstation is opened, is preheated；
(5) software on computer is opened, carries out the measurement of transient photocurrents.
Test result analysis and explanation：
Fig. 6：Object phase and structural analysis are carried out to sample using powder x-ray diffraction.Fig. 6 is respectively pure TiO2Spectrum
Figure, pure g-C3N4Spectrogram and g-C3N4Compound quantity is 50% sample spectrogram.As seen from the figure, TiO22 θ for 25.48 °,
At 37.08 °, 37.97 °, 38.73 °, 48.20 °, 54.05 °, 55.21 °, 62.80 °, 68.90 °, there is apparent diffraction
Peak, (101), (103), (004), (112), (200), (105), (211), (204), (116) for corresponding to anatase respectively are brilliant
Face has no miscellaneous peak in other positions, it is possible thereby to determine, sample is pure phase anatase.Pure g-C3N4Spectrogram be in 2 θ
At 14.12 °, 27.29 °, there is apparent diffraction maximum, correspond to g-C respectively3N4(100), (002) crystal face, in other positions
Miscellaneous peak is had no, it is possible thereby to determine, sample is pure phase g-C3N4。
In g-C3N4Compound quantity is corresponding g-C in 50% sample spectrogram3N4(002) crystal face at occur it is smaller
Diffraction maximum, and the intensity of each diffraction maximum of corresponding anatase is weakened compared with pure phase anatase, this is mainly due to g-C3N4
It is a kind of half eutectic substance, crystallinity is not high, with anatase TiO2After compound, TiO is affected2Crystallinity, this illustrates g-C3N4It is multiple
It closes in anatase TiO2On.
In anatase TiO2Spectrogram in, the intensity of diffraction maximum is all higher, and peak is all relatively sharp, illustrates anatase TiO2
Crystallinity it is preferable, experimental design is more reasonable, generate sample quality it is preferable.
Fig. 7 is pure phase anatase TiO2Nanobelt and g-C3N4Compound quantity is the SEM figures of 50% sample.As seen from the figure,
TiO2The pattern control basic forming of nanobelt, such as Fig. 7 can see TiO when amplification factor is 100,000 times2Substantially it is in width
100-120nm, banding of the length at 3-10 microns, while shown in figure, the surface smoother of nanobelt, crystallinity is very
It is good.
The part marked in figure 7d is as successfully compounded in TiO2G-C above nanobelt3N4, by comparing Fig. 7 b and
Fig. 7 d have found：TiO in two figures2Nanobelt both topographically has a larger difference, and the nanometer belt surface in Fig. 7 d is extremely rough, and
In the structure of jagged edges, so as to verify g-C again3N4Successfully it is compounded in TiO2On nanobelt.But meanwhile in Fig. 7 d
In more many irregular bulk structures, this illustrates g-C3N4All TiO is not compounded in it2On nanobelt, also there are many trips
From g-C3N4Particle.The reason for causing such result may be with TiO in sample making course2Nanobelt is mixed in ultrasound with thiourea solution
Time in conjunction is inadequate, TiO2Nanobelt is mixed with thiocarbamide not enough uniformly causes local thiourea concentration high and TiO2Nanobelt
Grain concentration is low, so as to cause during firing, g-C3N4Fail all to be compounded in TiO2On nanobelt.
Fig. 8 is g-C3N4Compound quantity is the TEM figures of 50% sample, and TiO can be further observed that by transmission electron microscope2
The pattern of nanobelt.Such as Fig. 8, TiO is can see under low power transmission electron microscope2Banded structure, in figure it can be found that some
Bulk structure composite can equally prove g-C on the surface of nanobelt3N4It has been compounded in TiO2On nanobelt.
Fig. 8 b are the sample drawing under high power transmission electron microscope, can be with crystal face clear-cut texture visible in detail in figure
TiO2Nanobelt, that in irregular bulk is g-C3N4, interface is clear between the two.Moreover, the width of lattice fringe is substantially
0.350nm, (101) crystal face of corresponding anatase, can verify anatase among the process of formation, be preferentially along (101)
Crystal plane direction growth, the result that XRD is obtained can be verified again.
As shown in figure 9, by the transient photocurrents of test sample, the light induced electron of catalyst sample can be intuitively detected
Efficiency, sample can generate instantaneous photoelectric current under illumination condition, and photoelectric current is big, then illustrates the light induced electron of catalyst sample
Efficient, i.e. the photocatalysis effect of catalyst is good；Photoelectric current is small, then illustrates that the light induced electron efficiency of catalyst sample is low, that is, urge
The photocatalysis effect of agent is poor, and stable 15 μ A of transient photocurrents are shown in figure.
Figure 10：The photocatalysis performance of catalyst is evaluated by comparing the effect of rhodamine B degradation.Then, according to obtaining
Degradation curve, kinetics is explained by Langmuir-Hinshelwood models：
ln(C/C0)=kt
The light degradation curve of Figure 10, that is, sample under visible light, as seen in Figure 10, in the 50min secretly adsorbed,
The concentration decline of rhodamine B is not it is obvious that percent of decolourization is between 10%-20%.The Luo Dan under the irradiation of 420nm visible rays
The concentration of bright B declines apparent.
Test device：
When carrying out the purified treatment of oil-containing seawater, sewage purifying cylinder in a manner that first place connects is contacted, is contacted
Pipeline for fluid circuit 15, oily wastewater enters from water inlet 13, and passes sequentially through each sewage purifying cylinder along fluid circuit,
Decontamination cycle is completed eventually by water outlet 14, the upper end of the effluent treatment plant of series winding is provided with gas piping 16, is used for
The air pressure in sewage purifying cylinder is controlled, to reach control oil-containing seawater by fluid circuit smoothly into sewage purifying cylinder, in dirt
The lower end of water purification tank is provided with discharge pipe line 17, and discharge pipe line connects respectively with each sewage purifying cylinder, oil-containing seawater into
Heat exchanger 10 is provided on fluid circuit before entering sewage purifying cylinder, and equipped with water tank 11 and power supply facilities 12, is being intake
Pump inlet pressure indicator 7 is provided at mouthful, water outlet is provided with pump discharge pressure indicating gage 9, is set on fluid circuit
It is equipped with flow gauge (FG) 8.
Test method：
Oil-containing seawater is simulated using simulated seawater mixed diesel, and in this, as pending Wastewater Sample.The sewage
PH is substantially neutral, COD value 950-1000.Select equipment anode-anode mode, by 8 sewage purifying cylinders connect into
Row oil-containing Seawater Treatment.The fixed liquid holdup of equipment is 80-100L, using the oil-containing seawater of 120-140L as internal circulating load.Pass through
The flow-limiting valve of import carries out flow of inlet water just to control, flow 20L/min.Equipment power supply is opened, is filled by water inlet pipe
Pump, open simultaneously pump top vent valve, treat there is liquid outflow in vent valve, tighten vent valve, start to effluent treatment plant into
Row water-filling when outlet has liquid at the uniform velocity to flow out, formally starts effluent treatment plant.After equipment starts successfully, open and become
Mode modulation is constant current mode, while Current Voltage is set to start to be electrolysed to desirable value by electric appliance.Timing takes from thief hatch
Sample detects the COD value in water sample.
Operational effect：Pass through groping for long-term experiment, it can be deduced that draw a conclusion：Since greasy dirt is mostly that macromolecular is organic
Object, during electrolysis, for larger molecular organics electrolysis is become small organic molecule in the case of low current (40A or so)
It is with obvious effects, and it is more obvious for the effect for being thoroughly electrolysed small organic molecule in the case of high voltage (80A or so).It is logical
In the case of the electrolysis for spending 5-6 hour, the COD value of terminal is generally 100 or so.
Oily wastewater purification pot based on photocatalysis and electrolysis tech uses enclosed construction, and purifier shell is with before
Lid, rear cover make photocatalysis and cell reaction be happened in enclosed environment, reduce volatile materials and cause secondary pollution to environment
Risk.
It, can since electrode and photochemical catalyst as usage time increases have consumption and deactivation phenomenom, it is necessary to timing is replaced
The protecgulum and rear cover of dismounting make more changing device inner body, are more convenient inside cleaning plant, the design of integral type is more easy to device
It carries and installs.
Photocatalysis technology is combined by the oily wastewater purification pot based on photocatalysis and electrolysis tech with electrolysis tech, is improved
To the purification efficiency of oily wastewater.Ultraviolet lamp between two pieces of photocatalytic plates is installed and not only increases photochemical catalyst by ultraviolet light
Irradiated area, ultraviolet lamp can also kill the bacterium in water body, play the role of disinfection.The partition design of multiple photocatalytic plates carries
The high contact area of photocatalyst layer and sewage improves the purification efficiency of sewage.
Oily wastewater purification pot based on photocatalysis and electrolysis tech effectively increases the purification efficiency of oily wastewater, to contain
The purification of oily water provides a kind of practicable method, and the oily wastewater purification pot based on photocatalysis and electrolysis tech is to supply
Efficiently utilize luminous energy, the multifunctional oil-contained waste water cleaning system of lasting efficient stable operating.
Photocatalysis technology with electrolysis tech is combined, can effectively purify the organic substance in sewage, and can be to sewage
In the microorganisms such as bacterium, virus inactivated, it is good to oily wastewater clean-up effect, it is efficient.
The utility model is described in detail above, but the content is only the preferred embodiment of the utility model,
It should not be considered as limiting the scope of the present invention.Equivalent change made according to the scope of application of this utility model with
Improve etc., it should all still belong within the patent covering scope of the utility model.
Claims (4)
1. the oily wastewater purification pot based on photocatalysis and electrolysis tech, it is characterised in that：It is urged including shell, protecgulum, rear cover, light
Change plate, ultraviolet lamp tube and electrode,
Shell is tubular structure, and radial section is circle, and the internal layer edge setting of shell is free interlayer, is set in empty interlayer wired
Cable；
The radial parallel of shell is provided with photocatalytic plate inside the housing, the plane of photocatalytic plate is circle, circular area with
The area of section of shell is identical, and circular hole is provided on photocatalytic plate, and photocatalysis is provided on two side planes of photocatalytic plate
Oxidant layer；Titanium dioxide optical catalyst is provided in photocatalyst layer；
Ultraviolet lamp tube is provided between adjacent photocatalytic plate inside the housing, ultraviolet lamp tube is annular in shape, is set along outer casing inner wall,
The ultraviolet lamp tube is connected with cable；
The front end of shell is provided with protecgulum, rear cover is provided in the rear end of shell, protecgulum has identical structure with rear cover,
It is set in protecgulum plane there are two water inlet, is set in rear cover plane there are two water outlet, the edge of intake-outlet is provided with
Annular protrusion is provided with electrode fixing holes, between the water inlet of protecgulum and the water outlet of rear cover in intake-outlet planar central
Two electrodes are set, and electrode passes through the round hole of photocatalytic plate, and the titanium dioxide that composite nitride carbon is provided in electrode surface is received
Rice belt electrode material layer.
2. the oily wastewater purification pot according to claim 1 based on photocatalysis and electrolysis tech, it is characterised in that：It is described
The quantity of photocatalytic plate is four, is respectively the first photocatalytic plate, the second photocatalytic plate, the 3rd photocatalytic plate and the 4th photocatalysis
Plate, four photocatalytic plates divide space of enclosure etc. to quinquepartite.
3. the oily wastewater purification pot according to claim 1 based on photocatalysis and electrolysis tech, it is characterised in that：It is described
Circular hole number for 8,8 round holes be distributed in on the circular periphery of photocatalytic plate concentric.
4. the oily wastewater purification pot according to claim 1 based on photocatalysis and electrolysis tech, it is characterised in that：It is described
Inlet opening for water-drop-shaped, quantity is 6, is symmetrically and evenly distributed along electrode fixing holes.
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| CN201720720384.3U CN207451670U (en) | 2017-06-20 | 2017-06-20 | Oily wastewater purification pot based on photocatalysis and electrolysis tech |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117684A (en) * | 2017-06-20 | 2017-09-01 | 天津大学 | Oil-polluted water purification pot based on photocatalysis and electrolysis tech |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117684A (en) * | 2017-06-20 | 2017-09-01 | 天津大学 | Oil-polluted water purification pot based on photocatalysis and electrolysis tech |
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