CN100560510C - Photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water - Google Patents
Photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water Download PDFInfo
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- CN100560510C CN100560510C CNB2007100536748A CN200710053674A CN100560510C CN 100560510 C CN100560510 C CN 100560510C CN B2007100536748 A CNB2007100536748 A CN B2007100536748A CN 200710053674 A CN200710053674 A CN 200710053674A CN 100560510 C CN100560510 C CN 100560510C
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- photoelectrochemistrmultiple
- catalytic oxidation
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Abstract
Photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water, it comprises cell body and battery lead plate, light source, described cell body (1) is made up of inlet flume (8), trough floor (13), wallboard (10), air cathode (9); Light source vertically is fixed on the interior axis of groove by illuminator sleeve pipe (3), and tooth mouth distribution pipe (6) is fixed on cell body (1) top, and tooth mouth distribution pipe (6) is parallel to location orifice plate (2); Inlet flume (8) weldering places the outer top of cell body (1), and air electrode (9) is molten to be welded on the top wallboard (10) cell body (1) the both sides outside, contacts waste water, groove outer contacting air in air electrode (9) groove; Nano titanium oxide/titanium board network electrode (5) and active foam nickel electrode (4) are joined together to form positive pole, and form circuit loop jointly with air electrode (9), external rectification power (16).The present invention is particularly suitable for handling extremely difficult biochemical, has bio-toxicity, the pharmacy that saliferous is high, pesticide industrial wastewater and contain " three cause " organic pollutant wastewater.
Description
Technical field
The present invention relates to a kind of water treatment device that uses the development of photoelectricity complex phase catalytic oxidation principle, more particularly it is a kind of photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water.
Background technology
For utmost point bio-refractory,, be very active research field of our times water treatment to environment, " three cause " very harmful (carcinogenic, teratogenesis, mutagenesis) organic pollutant to the mankind.Existing in the document, but the photochemical catalytic oxidation agent that they use or adopt adding type to render among the waste water much about the organic research report of photochemical catalytic oxidation, or attached on the isolator, do not possess conductor function.
1., catalytic wet air oxidation (CWAO) and overcritical wet oxidation process (SCWO) the difficult technical study biochemical and that contain " three cause " organic pollutant wastewater of the improvement led of having appeared in the newspapers mainly contains following several:, these two kinds of methods require (150-600 ℃ of High Temperature High Pressure, 5-25MPa), operational condition harshness.2., photochemical oxidation: UV/O
3(UV/ozone), UV/H
2O
2(UV-light/hydrogen peroxide), UV/O
3/ H
2O
2(UV/ozone/hydrogen peroxide), UV/Fe-
+ 2H
2O
2(UV-light/boiling reagent), UV/TiO
2-quartz sand, UV/TiO
2-glass fibre, UV/TiO
2-silica gel etc.These reactivitys are single, and processing cost is higher, and organic pollutant degradation is existed selectivity, and versatility is bad.3., the three-diemsnional electrode electrochemical techniques, the particle filled composite that is adopted is the gac of filming, graphite one carbon one metal, gac one mica one silicon-dioxide etc.
Facts have proved: single three-diemsnional electrode electrochemical catalytic oxidation technology is difficult to apply on engineering for handling " three cause " organic pollutant.
It is powerful that the practical situation that existing difficult degradation, toxic, high saliferous, high concentration organic sewage are handled need be developed the degraded dirt-removing functions, the novel water treatment device that the scope of application is extensive.
So far do not see as yet adopt air electrode and photochemical catalyst electrode constitute a pair of can with the liquid phase light-catalyzed reaction and photocatalysis in solid phase reacts and electrocatalytic reaction is unified in photoelectrochemistry complex phase catalyst reaction device in the same system.
Summary of the invention
The objective of the invention is to overcome above-mentioned existing disadvantages of background technology part, and a kind of photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water is provided.It is particularly suitable for handling extremely difficult biochemical, has bio-toxicity, the pharmacy that saliferous is high, pesticide industrial wastewater and contain " three cause " organic pollutant wastewater.
The objective of the invention is to reach: photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water by following measure, it comprises cell body, battery lead plate, nano-photocatalyst, activated cathode, light source, it is characterized in that described cell body 1 is made up of inlet flume 8, trough floor 13, wallboard 10, air cathode 9; Light source vertically is fixed in the groove on the axis by illuminator sleeve pipe 3, the upper end of illuminator sleeve pipe 3 is fixed on the orifice plate 2 of location, the lower end is arranged in the location cover for seat 15 on pipe rising pipe 12 tops, hole, and the two ends of location orifice plate 2 are welded on respectively on the wallboard 10 at two ends in the groove; Tooth mouth distribution pipe 6 is fixed on cell body 1 top, and tooth mouth distribution pipe 6 is parallel to location orifice plate 2; Hole pipe rising pipe 12 is positioned on the intersection point line of lamp sleeve pipe 3 on the trough floor 13, and hole pipe rising pipe 12 goes out trough floor 13 backs along cell body 1 outer wall rising and fixing; Inlet flume 8 weldering places the outer top of cell body 1, and air electrode 9 is molten to be welded on the top wallboard 10 cell body the 1 both sides outside, contacts waste water, groove outer contacting air in air electrode 9 grooves; Active nickel foam (Ni) electrode 4 in the cell body 1 is positioned at air electrode 9 on the cell body 1 and nano titanium oxide/titanium board network (TiO of cell body 1
2/ Ti) between the electrode 5; Discharging hole is taken over 11 welderings and is put in cell body 1 bottom, and return line 7 is welded on the termination portion of inlet flume 8, described nano titanium oxide/titanium board network (TiO
2/ Ti) electrode 5 and active nickel foam (Ni) electrode 4 are joined together to form positive pole, with air electrode 9, the external rectification power 16 common circuit loops of forming.
In technique scheme, be drilled with aperture 14, the quantity N of described aperture 14 〉=R on the pipe rising pipe 12 of described hole
2/ r
2, R is the radius of hole pipe rising pipe 12 in the formula, r is aperture 14 radiuses.Making the waste water flow system is the static pressure gravity flow, excessive by the liquid level difference promotion from top to bottom, is slow balanced the flowing of plunger tpe.
In technique scheme, described light source is a ultraviolet tube, is placed among the illuminator sleeve pipe 3, and ultraviolet wavelength is 253.7nm, and the spacing between the adjacent light source lamp sleeve pipe 3 is 150-200mm, and this wavelength and illumination range are preferred disposition.
In technique scheme, the drain outlet on the pipe rising pipe 12 of described hole is than the low 20mm of water outlet on the water inlet tooth mouth distribution pipe 6.
In technique scheme, described inlet flume 8 and cell body 1 be with wide, and be positioned at 6 times 200mm of tooth mouth distribution pipe.
In technique scheme, described active nickel foam (Ni) electrode 4 and air electrode 9 are parallel and at a distance of 10mm, nano titanium oxide/titanium board network (TiO
2/ Ti) electrode 5 and nickel foam (Ni) electrode 4 are parallel and at a distance of 15-20mm, and nano titanium oxide/titanium board network electrode 5 and foam nickel electrode 4 link together by lead.
Photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water of the present invention have advanced design, rational in infrastructure, make simple and easy, easy to operate, stable, save power consumption, have the extremely powerful degradation function of " three cause " organic pollutant.
Apparatus of the present invention and existing little heterogeneous, population electrocatalysis experimental test data contrast table:
Conclusion: apparatus of the present invention have the high strength degradation function, and the constitutionally stable organic pollutant that general treatment process (as little heterogeneous, population) can be difficult to degrade mineralizes.
Through evidence: the processing of factory effluents such as photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water p-nitrophenyl of the present invention, Benzene Chloride, aniline, propenal, T acid, H acid, phenylformic acid, benzylideneacetone and pharmacy has all reached ideal effect.
Apparatus of the present invention for handle the saliferous height, contain pharmacy and the pesticide industrial wastewater of sterilant, BOD/COD=0 (BOD represents that biological oxygen demand (BOD), COD represent chemical oxygen demand), the trade effluent that contains " three cause " organic pollutant has unrivaled unique effects.
Description of drawings
Fig. 1 is the structural representation of photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water of the present invention.
Fig. 2 is the vertical view of photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water of the present invention.
Fig. 3 is the side-view of photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water of the present invention.
Fig. 4 is the structural representation of tooth mouth distribution pipe among the present invention.
Fig. 5 is the B-B cut-away view of Fig. 4.
Fig. 6 is the structural representation of hollow tube rising pipe of the present invention.
Fig. 7 is the A-A cut-away view of Fig. 6.
Fig. 8 is photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water circuit connection structure figure among the present invention.
Embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but it does not constitute the restriction to the present invention's protection, only work is known and understanding easily by illustrating that advantage of the present invention will become for example simultaneously more.
The reaction mechanism of photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water of the present invention is: device has adopted PTFE (tetrafluoroethylene) waterproof type air electrode 9 to provide reaction accelerator H for reacting on-the-spot photochemical catalytic oxidation
2O
2(hydrogen peroxide), nano active semiconductor light-catalyst TiO
2Loaded on the photochemical catalyst electrode that netted Ti (titanium board network) metallic surface forms high absorbability and has anodic bias, also has active nickel foam (Ni) electrode, constitute organic molecule multiphase photocatalysis reacting environment jointly, this liquid phase and solid phase bonded photochemical catalysis oxidation, electrochemical catalytic oxidation, indirect catalytic oxidation, in the system of indirect light electrochemical catalytic oxidation, the reaction accelerator H of liquid phase
2O
2Under the effect of electrocatalysis and ultraviolet excitation, generate the extremely strong OH ' hydroxyl radical free radical (Φ of oxidisability
o=2.8V), organic molecule in the waste water is produced the oxidative degradation of non-selectivity, for the photochemical catalyst electrode of complex phase, under the exciting of UV-light, its surface produces a large amount of high-energy photoproduction electronics---holes, and this also is a kind of important oxygenolysis approach to organic molecule (particularly being attracted to the organic molecule of electrode surface).Electrode with catalytic activity is this light---electricity excites, the key of catalytic process.
The chemical expression of photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water of the present invention is as follows:
O
2(air)+2H
++ 2e → H
2O
2
H
2O
2---hv (photoelectricity excites) → 2OH '
OH′+R→P
TiO
2+ hv (photoelectricity excites) → h
++ e
-
H
++R→P
(R in the formula---organic molecule, P---oxidative breakdown product, finally be H
2O and CO
2)
Nano-TiO
2Under the photoelectricity excitation, produce and keep " electron hole " (positive charge) of higher concentration.The H that photoelectrocatalysis produces
2O
2, high strength such as OH ', " photohole " oxidic particle can make organic molecule in the waste water produce electrochemistry to burn (promptly organism being implemented inorganicization reaction), waste water is changed into up hill and dale do not contain organic cleaning water.
Consult accompanying drawing as can be known: the present invention includes cell body and battery lead plate (comprising the anode that air cathode 9, foam nickel electrode 4 and nano titanium oxide/titanium board network electrode 5 links into an integrated entity), light source.The cell body profile is a rectangular parallelepiped, and cell body is made up of inlet flume 8, trough floor 13, groove wallboard 10, air electrode 9.Some illuminator sleeve pipes 3 vertically place on the axis in the cell body 1, spacing 150-200mm between its adjacent light source lamp sleeve pipe, the upper end is by location orifice plate 2 location, fall in the location cover for seat 15 at posticum pipe 12 tops the lower end, and the two ends of location orifice plate 2 are welded on respectively on the wallboard 10 at cell body 1 two ends.Tooth mouth distribution pipe 6 is fixed on by horizontal location on the wallboard 10 at two ends, cell body 1 top, and illuminator sleeve pipe 3 is parallel to location orifice plate 2; Hole pipe rising pipe 12 is fixed on the trough floor 13 by horizontal location, and be positioned on the illuminator sleeve pipe 3 intersection point lines, this pipe goes out behind the groove along the cell body outer wall to rise and fixing, water port is than the low 20mm of water inlet tooth mouth distribution pipe 6 water outlets, the termination sealing of this pipe in cell body 1, along having the individual aperture of N (N is a positive integer) equably, the little hole number 〉=R that opens on the intersecting lens of the horizontal plane of its medullary ray and tube wall both wings
2/ r
2, R is that radius, the r of hole pipe 12 are the radius of aperture in the formula; Inlet flume 8 weldering is put on the top of rising pipe 12 opposite cell body external end heads, with cell body with wide, depth ratio tooth mouth distribution pipe 6 low 200mm, length is decided on the water treatment flow; Return line 7 is welded on the outside of inlet flume 8 terminations, and liquid level stabilizing is as the criterion in the inlet flume 8 to keep; Air electrode 9 molten solid weldings fix on the outer top of wallboard 1/3 wallboard of cell body 1 both sides, at the position of settling air electrode 9, need mill sky with the cell body wallboard at this position earlier, it mills the length of sky size and wide respectively than the length and the wide little 15mm of air electrode 9, make the fixing back of air electrode 9 to can contacting waste water in the groove, but to the outer ingress of air of groove; Active foam Ni electrode 4 is parallel at a distance of 10mm with air electrode 9; Discharging hole 11 is welded on cell body 1 bottom, is positioned at inlet flume 8 belows, and its mid point is 60mm apart from trough floor 13, mates external ballast power supply 16.The waste water flow system is the static pressure gravity flow, and is excessive by the liquid level difference promotion from top to bottom, is slow balanced the flowing of plunger tpe.
Apparatus of the present invention are removed battery lead plate, and all the other all adopt PVC sheet material and pvc pipe material to make to light source portion especially.
Apparatus of the present invention can be equipped with PH setting device (existing product), with waste water in the control flume in best potential of hydrogen scope.
The present invention includes cell body, battery lead plate, light source and external rectifier power source, cell body is the vertical type cylinder bodily form, and cell body is made up of base plate, cylindrical shell, lamp casing support, crown caps, and the height of cell body is H: D 〉=3 with cell body diameter ratio; Water-in is taken over weldering and is put in the cylindrical shell bottom, enters cylindrical shell back clevis shape inlet distribution hole pipe, and water outlet is taken over and is welded on cylindrical shell top; The emptying water out is welded on the symmetric points place that the cylindrical shell bottom is positioned at water-in; Cover plate adopts big flange to be connected with cylindrical shell, and cover plate is the card formula, allows the lamp cannula tip expose 100mm, and leaves lead connection window; The lamp sleeve pipe just is being " △ " shape and is being evenly distributed the ground positioned vertical in groove, and the location cover for seat weldering of lamp sleeve bottom places on the base plate; The molten solid welding of air electrode is distributed in the cylindrical shell upper half part on cylindrical shell; TiO
2/ Ti electrode is processed into round shape Φ 300mm, is that the center of circle is injected in the groove with the lamp sleeve pipe; Foam Ni electrode is processed into round shape Φ 400mm, is that center of circle cover is inserted in TiO with the lamp sleeve pipe
2Outside/Ti the electrode; 4 bearings of device design are welded on the cylinder body outer wall symmetrically, and all the other contents are with reference to example 1.
Need to prove: for the professional and technical personnel in affiliated field, under the prerequisite that does not change the principle of the invention, can also make some changes and distortion to the present invention, this belongs to protection scope of the present invention equally.
Claims (6)
1, photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water, it comprises cell body and battery lead plate, light source, it is characterized in that described cell body (1) is made up of inlet flume (8), trough floor (13), wallboard (10), air electrode (9); Light source vertically is fixed on the interior axis of groove by illuminator sleeve pipe (3), the upper end of illuminator sleeve pipe (3) is fixed on the location orifice plate (2), the lower end is arranged in the location cover for seat (15) on pipe rising pipe (12) top, hole, and the two ends of location orifice plate (2) are welded on respectively on the wallboard (10) at two ends in the groove; Tooth mouth distribution pipe (6) is fixed on cell body (1) top, and tooth mouth distribution pipe (6) is parallel to location orifice plate (2); Hole pipe rising pipe (12) is positioned on the intersection point line that trough floor (13) goes up illuminator sleeve pipe (3), and hole pipe rising pipe (12) goes out trough floor (13) back and rises and fixing along cell body (1) outer wall; Inlet flume (8) weldering places the outer top of cell body (1), and air electrode (9) is welding on the top wallboard (10) cell body (1) the both sides outside, contacts waste water, groove outer contacting air in air electrode (9) groove; Active foam nickel electrode (4) in the cell body (1) is positioned between the nano titanium oxide/titanium board network electrode (5) of air electrode (9) on the cell body (1) and cell body (1); Discharging hole is taken over (11) weldering and is put in cell body (1) bottom, and return line (7) is welded on the termination portion of inlet flume (8); Described nano titanium oxide/titanium board network electrode (5) and active foam nickel electrode (4) are joined together to form positive pole, and form circuit loop jointly with air electrode (9), external rectification power (16).
2, photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water according to claim 1 is characterized in that being drilled with aperture (14), the quantity N 〉=R of described aperture (14) on the described hole pipe rising pipe (12)
2/ r
2, R is the radius of hole pipe rising pipe (12) in the formula, r is aperture (a 14) radius.
3, photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water according to claim 1, it is characterized in that described light source is a ultraviolet tube, be placed among the illuminator sleeve pipe (3), ultraviolet wavelength is 253.7nm, and the spacing between the adjacent light source lamp sleeve pipe (3) is 150-200mm.
4, photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water according to claim 1 is characterized in that drain outlet on the described hole pipe rising pipe (12) is than the low 20mm of the water outlet on the tooth mouth distribution pipe (6).
5, photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water according to claim 1 is characterized in that described inlet flume (8) and cell body (1) with wide, the low 200mm of depth ratio tooth mouth distribution pipe (6).
6, photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water according to claim 1, it is characterized in that described active foam nickel electrode (4) is parallel with air electrode (9) and at a distance of 10mm, nano titanium oxide/titanium board network electrode (5) is parallel with active foam nickel electrode (4) and at a distance of 15-20mm, and nano titanium oxide/titanium board network electrode (5) links together by lead with active foam nickel electrode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100536748A CN100560510C (en) | 2007-10-26 | 2007-10-26 | Photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100536748A CN100560510C (en) | 2007-10-26 | 2007-10-26 | Photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101172674A CN101172674A (en) | 2008-05-07 |
| CN100560510C true CN100560510C (en) | 2009-11-18 |
Family
ID=39421464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100536748A Expired - Fee Related CN100560510C (en) | 2007-10-26 | 2007-10-26 | Photoelectrochemistrmultiple multiple phase catalytic oxidation device for treatment of water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100560510C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8398828B1 (en) | 2012-01-06 | 2013-03-19 | AquaMost, Inc. | Apparatus and method for treating aqueous solutions and contaminants therein |
| WO2013082294A1 (en) | 2011-12-02 | 2013-06-06 | AquaMost, Inc. | Apparatus and method for treating aqueous solutions and contaminants therein |
| US9045357B2 (en) | 2012-01-06 | 2015-06-02 | AquaMost, Inc. | System for reducing contaminants from a photoelectrocatalytic oxidization apparatus through polarity reversal and method of operation |
| CA2900722A1 (en) | 2013-02-11 | 2014-08-14 | AquaMost, Inc. | Apparatus and method for treating aqueous solutions and contaminants therein |
| CN108862921A (en) * | 2018-07-23 | 2018-11-23 | 徐州工程学院 | A kind of electrochemical reaction appts in titanium dioxide treatment waste water |
| CN110902782A (en) * | 2019-12-23 | 2020-03-24 | 广东工业大学 | Adsorption oxidation coupling wastewater treatment device |
-
2007
- 2007-10-26 CN CNB2007100536748A patent/CN100560510C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101172674A (en) | 2008-05-07 |
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Inventor after: Tu Xiaobo Inventor after: Zhang Huaisong Inventor after: Li Shirong Inventor before: Zhang Huaisong Inventor before: Li Shirong |
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Owner name: WUHAN WEIMENG ENVIRONMENTAL PROTECTION TECHNOLOGY Free format text: FORMER OWNER: WUHAN WEIMENG CHEMICAL MECHINE CO., LTD. Effective date: 20120426 |
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