CN218491520U - Device for degrading printing and dyeing wastewater by photocatalytic oxidation method - Google Patents
Device for degrading printing and dyeing wastewater by photocatalytic oxidation method Download PDFInfo
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- CN218491520U CN218491520U CN202222597820.6U CN202222597820U CN218491520U CN 218491520 U CN218491520 U CN 218491520U CN 202222597820 U CN202222597820 U CN 202222597820U CN 218491520 U CN218491520 U CN 218491520U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 97
- 238000007639 printing Methods 0.000 title claims abstract description 94
- 238000004043 dyeing Methods 0.000 title claims abstract description 92
- 230000003647 oxidation Effects 0.000 title claims abstract description 37
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 37
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000000593 degrading effect Effects 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 99
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 239000011941 photocatalyst Substances 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims description 36
- 238000006731 degradation reaction Methods 0.000 claims description 14
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 9
- 229910052753 mercury Inorganic materials 0.000 claims description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 claims description 8
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229910052724 xenon Inorganic materials 0.000 claims description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000497 Amalgam Inorganic materials 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 8
- 238000007146 photocatalysis Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000006199 nebulizer Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000011197 physicochemical method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
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- 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
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- Treatment Of Water By Oxidation Or Reduction (AREA)
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Abstract
The utility model relates to a waste water treatment technical field discloses a device of printing and dyeing waste water is degraded to photocatalysis oxidation method, include: the reaction assembly comprises a reaction box, a storage box, an ultraviolet light-emitting element and an atomizer, printing and dyeing wastewater is contained in the reaction box, the storage box and the ultraviolet light-emitting element are arranged in the reaction box, the ultraviolet light-emitting element is located above the liquid level of the printing and dyeing wastewater, the storage box is located above the ultraviolet light-emitting element, liquid photocatalyst is contained in the storage box, the atomizer is arranged in the storage box, the atomizer is used for atomizing the liquid photocatalyst into photocatalyst fog drops, and the storage box is communicated with the inside of the reaction box, so that the photocatalyst fog drops can enter the inside of the reaction box. The device for degrading the printing and dyeing wastewater by using the photocatalytic oxidation method is used for treating the printing and dyeing wastewater, and can improve the efficiency of photocatalytic treatment of the printing and dyeing wastewater.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a device of printing and dyeing waste water is degraded to light catalytic oxidation method.
Background
The problem of comprehensive treatment of printing and dyeing wastewater becomes a big problem which needs to be solved urgently in the world environmental science community at present. The printing and dyeing industry is a large household for discharging industrial wastewater in China, the development of the printing and dyeing industry causes the printing and dyeing wastewater to be a serious cause of environmental pollution, and according to incomplete statistics, the daily discharge amount of the printing and dyeing wastewater in China is 3106-4106m 3 . According to the related data, about 1.6 hundred million m is reported every year 3 The fuel wastewater is discharged into various water environments. The printing and dyeing wastewater contains a large amount of organic pollutants and inorganic pollutants, and the effective treatment of the printing and dyeing wastewater is an objective requirement for environmental protection.
At present, the conventional printing and dyeing wastewater treatment modes mainly comprise a physicochemical method (flocculation precipitation, adsorption, ion exchange, ultrafiltration, dialysis and the like) and a biochemical method (an activated sludge method and a biofilm method), but the conventional treatment modes have low treatment efficiency, high cost, serious secondary pollution and low pollutant removal rate. At present, the application of advanced oxidation technology in the treatment of printing and dyeing wastewater is infinite, and a photocatalytic oxidation method, an ozone oxidation method, an electrochemical method, a wet oxidation method and the like have great prospects in the advanced treatment of printing and dyeing wastewater. The principle of the photocatalytic oxidation method is to purify pollutants based on the oxidation-reduction capability of a photocatalyst under ultraviolet irradiation, and compared with other conventional water treatment modes, the photocatalytic oxidation technology has the advantages of simpler equipment structure, more convenient operation, wider reaction conditions, larger application range, lower energy consumption, stronger oxidation performance, more environmental protection and the like. However, when the photocatalytic oxidation technology is adopted to treat organic wastewater at present, the photocatalyst is placed in the wastewater, and the ultraviolet light source is positioned above the liquid level of the wastewater, so that the printing and dyeing wastewater is often a high-chroma and high-concentration water body, and the light transmittance is poor, so that the ultraviolet light is difficult to irradiate the photocatalyst, and the wastewater treatment efficiency is low.
Therefore, how to improve the efficiency of photocatalytic oxidation treatment of wastewater becomes a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a device for photocatalytic oxidation degradation of printing and dyeing wastewater, which has high wastewater treatment efficiency.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a device of printing and dyeing waste water is degraded to light catalytic oxidation method, include: the reaction assembly comprises a reaction box, a storage box, an ultraviolet light-emitting element and an atomizer, wherein the inside of the reaction box is used for containing printing and dyeing wastewater, the storage box and the ultraviolet light-emitting element are arranged inside the reaction box, the ultraviolet light-emitting element is positioned above the liquid level of the printing and dyeing wastewater, the storage box is positioned above the ultraviolet light-emitting element, the inside of the storage box is used for containing a liquid photocatalyst, the atomizer is arranged inside the storage box, the atomizer is used for atomizing the liquid photocatalyst into photocatalyst fog drops, and the inside of the storage box is communicated with the inside of the reaction box, so that the photocatalyst fog drops can enter the inside of the reaction box.
Preferably, the device for degrading printing and dyeing wastewater by the photocatalytic oxidation method further comprises a liquid driving device, the number of the reaction assemblies is multiple, the reaction tanks of all the reaction assemblies are sequentially communicated in series, and the liquid driving device is used for driving the printing and dyeing wastewater to sequentially flow through the reaction tanks.
Preferably, the device for degrading printing and dyeing wastewater by the photocatalytic oxidation method further comprises a gas driving device and a gas conveying pipe, wherein the gas driving device is communicated with one end of the gas conveying pipe, the other end of the gas conveying pipe is arranged below the liquid level of the printing and dyeing wastewater, and the gas driving device is used for conveying gas into the gas conveying pipe.
Preferably, the ultraviolet light emitting element is one or more of a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, an amalgam lamp, a halogen lamp, a xenon lamp, a black lamp, and a vacuum ultraviolet lamp.
Preferably, the liquid photocatalyst is any one of a hydrogen peroxide liquid, a persulfate liquid, a hypochlorite liquid, and a potassium permanganate liquid.
Preferably, the nebulizer is an ultrasonic nebulizer.
Preferably, the top end of the storage box is arranged in an open mode so as to be communicated with the interior of the reaction box.
Preferably, the reaction box is a stainless steel reaction box, a concrete reaction box or a polyvinyl chloride reaction box, and the reaction box is cylindrical or rectangular.
Preferably, the reaction assembly further comprises a first support frame and a second support frame, the first support frame and the second support frame are both arranged inside the reaction box, the first support frame and the second support frame are both fixedly connected with the inner wall of the reaction box, the distance between the first support frame and the liquid level of the printing and dyeing wastewater is smaller than the distance between the second support frame and the liquid level of the printing and dyeing wastewater, the ultraviolet light-emitting element is supported on the first support frame, and the storage box is supported on the second support frame.
The utility model discloses for prior art gain following technological effect:
the utility model provides a device of printing and dyeing waste water is degraded to photocatalysis oxidation method, include: the reaction assembly comprises a reaction box, a storage box, an ultraviolet light-emitting element and an atomizer, printing and dyeing wastewater is contained in the reaction box, the storage box and the ultraviolet light-emitting element are arranged in the reaction box, the ultraviolet light-emitting element is located above the liquid level of the printing and dyeing wastewater, the storage box is located above the ultraviolet light-emitting element, liquid photocatalyst is contained in the storage box, the atomizer is arranged in the storage box, the atomizer is used for atomizing the liquid photocatalyst into photocatalyst fog drops, and the storage box is communicated with the inside of the reaction box, so that the photocatalyst fog drops can enter the inside of the reaction box.
In the specific using process, after the photocatalyst fog drops are irradiated by the ultraviolet light-emitting element, active free radicals with strong oxidizing property are generated, when the photocatalyst fog drops carrying the active free radicals with strong oxidizing property freely settle to the liquid level of the printing and dyeing wastewater in the reaction box under the action of gravity, the photocatalyst liquid drops perform degradation reaction on the liquid level of the printing and dyeing wastewater, and pollutants in the printing and dyeing wastewater are treated.
Utilize the ultraviolet source who sets up in printing and dyeing wastewater liquid level top to shine photocatalyst and degrade the pollutant in arranging printing and dyeing wastewater in with photocatalyst and compare, the utility model provides a device degradation reaction of photocatalytic oxidation method degradation printing and dyeing wastewater mainly takes place at the liquid level of printing and dyeing wastewater, and the liquid level light transmissivity of printing and dyeing wastewater is good, so, and waste water treatment efficiency improves greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for degrading printing and dyeing wastewater by photocatalytic oxidation provided in an embodiment of the present invention.
Description of reference numerals: 100. a device for degrading printing and dyeing wastewater by a photocatalytic oxidation method; 1. a reaction box; 2. a storage box; 3. an ultraviolet light emitting element; 4. an atomizer; 5. printing and dyeing wastewater; 6. a liquid photocatalyst; 7. photocatalyst fog drops; 8. a liquid driving device; 9. a gas driving device; 10. and a gas delivery pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a device of printing and dyeing waste water is degraded to photocatalysis oxidation method that photocatalysis oxidation treatment waste water is efficient.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the present embodiment provides an apparatus 100 for degrading printing and dyeing wastewater by photocatalytic oxidation, comprising: reaction assembly, reaction assembly includes reaction box 1, storage box 2, ultraviolet light emitting component 3 and atomizer 4, 1 inside printing and dyeing waste water 5 that is used for holding of reaction box, storage box 2 and ultraviolet light emitting component 3 all set up in 1 inside of reaction box, and ultraviolet light emitting component 3 is located the liquid level top of printing and dyeing waste water 5, storage box 2 is located ultraviolet light emitting component 3 top, 2 inside liquid photocatalyst 6 that are used for holding of storage box, atomizer 4 sets up in 2 inside of storage box, atomizer 4 is used for atomizing into photocatalyst fog drip 7 with liquid photocatalyst 6, 2 inside and 1 inside being linked together of reaction box of storage box, so that photocatalyst fog drip 7 can get into 1 inside of reaction box.
In the specific using process, the photocatalyst fog drops 7 generate active free radicals with strong oxidizing property after being irradiated by ultraviolet light emitted by the ultraviolet light-emitting element 3, and when the photocatalyst fog drops 7 carrying the active free radicals with strong oxidizing property freely settle to the liquid surface of the printing and dyeing wastewater 5 in the reaction box 1 under the action of gravity, the photocatalyst drops perform degradation reaction on the liquid surface of the printing and dyeing wastewater 5 to treat pollutants in the printing and dyeing wastewater 5.
Compared with the method that the photocatalyst is arranged in the printing and dyeing wastewater 5 and the photocatalyst is irradiated by the ultraviolet light source arranged above the liquid level of the printing and dyeing wastewater 5 to degrade pollutants, the device 100 for degrading the printing and dyeing wastewater by the photocatalytic oxidation method provided by the embodiment mainly reacts on the liquid level of the printing and dyeing wastewater 5, so that the liquid level of the printing and dyeing wastewater 5 has good light transmittance, and the wastewater treatment efficiency is greatly improved.
Further, the printing wastewater 5 has better light transmittance as the reaction proceeds, and the photocatalyst that is dissolved in the printing wastewater 5 and does not undergo a degradation reaction can continue the degradation reaction (redox reaction) under irradiation of the ultraviolet light emitted from the ultraviolet light emitting element 3.
In the embodiment, specifically, the ultraviolet light emitting element 3 is placed 10-30cm above the liquid level of the printing and dyeing wastewater 5, and the storage tank 2 is fixed 20cm above the ultraviolet light emitting element 3.
In this embodiment, as shown in fig. 1, the apparatus 100 for degrading printing and dyeing wastewater by photocatalytic oxidation further comprises a liquid driving device 8, the number of reaction units is plural, the reaction chambers 1 of all the reaction units are sequentially communicated in series, and the liquid driving device 8 is used for driving the printing and dyeing wastewater 5 to sequentially flow through each reaction chamber 1. Through setting up a plurality of reaction assembly, in the specific use, printing and dyeing waste water 5 flows through each reaction box 1 in proper order, and a plurality of reaction assembly can handle printing and dyeing waste water 5 step by step, and then make 5 treatment of printing and dyeing waste water effect better.
Specifically, the fluid driving device 8 is a liquid pump, and preferably a corrosion-resistant liquid pump is selected to prolong the service life of the fluid driving device 8.
Further, the liquid driving device 8 is communicated with the reaction tank 1 of the reaction module located at the head (leftmost end in fig. 1), and a first flow valve is provided between the liquid driving device 8 and the reaction tank 1, and the liquid feeding speed of the whole device is adjusted by using the flow valve. Correspondingly, a liquid discharge port is provided in the reaction tank 1 of the reaction unit located at the tail (the rightmost end in fig. 1), and the treated printing and dyeing wastewater 5 is discharged through the liquid discharge port.
Specifically, a first flow valve is communicated with the liquid outlet end of the liquid driving device 8, and the first flow valve is communicated with the reaction box 1 of the reaction assembly positioned at the head part through a liquid inlet pipeline.
In this embodiment, as shown in fig. 1, the apparatus 100 for degrading printing and dyeing wastewater by photocatalytic oxidation further comprises a gas driving device 9 and a gas delivery pipe 10, wherein the gas driving device 9 is communicated with one end of the gas delivery pipe 10, the other end of the gas delivery pipe 10 is disposed below the liquid level of the printing and dyeing wastewater 5, and the gas driving device 9 is used for delivering gas into the gas delivery pipe 10.
In a specific using process, gas is conveyed into the gas conveying pipe 10 through the gas driving device 9, and then the gas is conveyed into the printing and dyeing wastewater 5 through the gas conveying pipe 10, so that the printing and dyeing wastewater 5 is aerated and stirred. By carrying out aeration stirring on the printing and dyeing wastewater 5, pollutants in the printing and dyeing wastewater 5 can be better degraded, and the wastewater treatment effect is improved.
Further, as shown in fig. 1, when the number of the reaction components is plural, the number of the gas delivery pipes 10 is plural, and the gas delivery pipes 10 correspond to the reaction chambers 1 one by one, one end of each gas delivery pipe 10 is communicated with the gas driving device 9, and the other end of each gas delivery pipe 10 is disposed below the liquid level of the printing and dyeing wastewater 5 of the corresponding reaction chamber 1.
In the present embodiment, the ultraviolet light emitting element 3 is one or more of a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, an amalgam lamp, a halogen lamp, a xenon lamp, a black lamp, and a vacuum ultraviolet lamp. The wavelength and the light intensity of different light sources are different, and in the specific use process, different light sources can be selected according to the actual conditions of the printing and dyeing wastewater 5 and the photocatalyst, so that the maximum efficiency is obtained.
In this embodiment, the liquid photocatalyst 6 is any one of a hydrogen peroxide liquid, a persulfate liquid, a hypochlorite liquid, and a potassium permanganate liquid.
In the present embodiment, the atomizer 4 is an ultrasonic atomizer. It should be noted that the atomizer 4 is not limited to the ultrasonic atomizer, and other types of atomizers 4 can also be used, and this is only for example. In addition, during the specific use process, the atomizer 4 is immersed in the liquid photocatalyst 6 to atomize the liquid photocatalyst 6 into photocatalyst droplets 7, and as the atomizer 4 works, a large amount of droplets are generated, and the large amount of droplets are scattered due to the action of gravity and filled in the reaction box 1.
Further, the photocatalyst mist 7 has a particle diameter of 1 to 20um.
In this embodiment, as shown in fig. 1, the storage tank 2 is open at the top end to communicate with the inside of the reaction tank 1.
In a specific using process, photocatalyst fog drops 7 formed by atomization enter the reaction box 1 from the top end of the storage box 2. It should be noted that, an opening may be formed in the side wall of the storage tank 2 or other means may be used to allow the atomized photocatalyst mist 7 to enter the reaction tank 1.
In this embodiment, the reaction chamber 1 is a stainless steel reaction chamber, a concrete reaction chamber or a polyvinyl chloride reaction chamber, and the reaction chamber 1 has a cylindrical or rectangular shape. It should be noted that the material of the reaction chamber 1 is not limited to stainless steel, concrete or polyvinyl chloride, and is only exemplified here. Also, the shape of the reaction chamber 1 is not limited to the cylindrical shape or the rectangular parallelepiped shape, and may be other shapes, which are also exemplified here.
In this embodiment, the reaction assembly further includes a first support frame and a second support frame, the first support frame and the second support frame are both disposed inside the reaction box 1, the first support frame and the second support frame are both fixedly connected to the inner wall of the reaction box 1, the distance between the first support frame and the liquid level of the printing and dyeing wastewater 5 is smaller than the distance between the second support frame and the liquid level of the printing and dyeing wastewater 5, the ultraviolet light emitting element 3 is supported on the first support frame, and the storage box 2 is supported on the second support frame.
Specifically, the first support frame comprises two first steel pipes arranged side by side, and two ends of each first steel pipe are connected with the inner wall of the reaction box 1; the second support frame includes two second steel pipes that set up side by side, and the both ends of each second steel pipe all are connected with the inner wall of reaction box 1.
The following will describe the apparatus 100 for degrading printing and dyeing wastewater by photocatalytic oxidation according to the present invention with reference to a specific example:
the reaction chambers 1 are designed into cylinders by adopting stainless steel plates with the radius of 0.7m at the bottom and the height of 5m, the adjacent reaction chambers 1 are connected by steel pipes with the inner diameter of 300mm, and the liquid pump is used for 20m of printing and dyeing wastewater 5 3 The flow rate of/h is pumped into the reaction box 1 at the head part, and the air pump is used for pumping 10m 3 The flow of/h carries out aeration stirring on the printing and dyeing wastewater 5 in each reaction box 1, an ultrasonic atomizer with the power of 50W produced by environmental engineering Limited company of Xian cloud water ultrasonically atomizes hydrogen peroxide liquid with the concentration of 3 percent in a storage box 2 into superfine fog drops with the grain diameter of 10um, and the superfine fog drops are irradiated by a xenon lamp with the fixed wavelength of 25W254nm produced by Shanghai Guige industry Limited companyThe gravity is fused with the printing and dyeing wastewater 5 to carry out degradation reaction.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. A device for degrading printing and dyeing wastewater by a photocatalytic oxidation method is characterized by comprising the following components:
the reaction assembly comprises a reaction box, a storage box, an ultraviolet light-emitting element and an atomizer, wherein the inside of the reaction box is used for containing printing and dyeing wastewater, the storage box and the ultraviolet light-emitting element are arranged inside the reaction box, the ultraviolet light-emitting element is positioned above the liquid level of the printing and dyeing wastewater, the storage box is positioned above the ultraviolet light-emitting element, the inside of the storage box is used for containing a liquid photocatalyst, the atomizer is arranged inside the storage box, the atomizer is used for atomizing the liquid photocatalyst into photocatalyst fog drops, and the inside of the storage box is communicated with the inside of the reaction box, so that the photocatalyst fog drops can enter the inside of the reaction box.
2. The photocatalytic oxidation apparatus for degradation of printing and dyeing wastewater according to claim 1, further comprising a liquid driving device, wherein the number of the reaction modules is plural, the reaction chambers of all the reaction modules are sequentially connected in series, and the liquid driving device is configured to drive the printing and dyeing wastewater to sequentially flow through the respective reaction chambers.
3. The photocatalytic oxidation apparatus for degradation of printing and dyeing wastewater according to claim 1, further comprising a gas driving device and a gas transport pipe, wherein the gas driving device is in communication with one end of the gas transport pipe, the other end of the gas transport pipe is positioned below the surface of the printing and dyeing wastewater, and the gas driving device is configured to transport a gas into the gas transport pipe.
4. The photocatalytic oxidation device for degrading printing and dyeing wastewater according to claim 1, wherein the ultraviolet light emitting element is one or more of a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, an amalgam lamp, a halogen lamp, a xenon lamp, a black lamp and a vacuum ultraviolet lamp.
5. The photocatalytic oxidation apparatus for degradation of printing and dyeing wastewater according to claim 1, wherein the liquid photocatalyst is any one of a hydrogen peroxide liquid, a persulfate liquid, a hypochlorite liquid, and a potassium permanganate liquid.
6. The photocatalytic oxidation apparatus for degradation of printing and dyeing wastewater according to claim 1, wherein the atomizer is an ultrasonic atomizer.
7. The photocatalytic oxidation apparatus for degradation of printing and dyeing wastewater according to claim 1, wherein said storage tank is open at the top to communicate with the inside of said reaction tank.
8. The photocatalytic oxidation apparatus for degradation of printing and dyeing wastewater according to claim 1, wherein the reaction tank is a stainless steel reaction tank, a concrete reaction tank, or a polyvinyl chloride reaction tank, and the reaction tank has a cylindrical or rectangular parallelepiped shape.
9. The photocatalytic oxidation device for degrading printing and dyeing wastewater according to claim 1, wherein the reaction assembly further comprises a first support frame and a second support frame, the first support frame and the second support frame are both arranged inside the reaction box, the first support frame and the second support frame are both fixedly connected with the inner wall of the reaction box, the distance between the first support frame and the liquid level of the printing and dyeing wastewater is smaller than the distance between the second support frame and the liquid level of the printing and dyeing wastewater, the ultraviolet light emitting element is supported on the first support frame, and the storage box is supported on the second support frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222597820.6U CN218491520U (en) | 2022-09-30 | 2022-09-30 | Device for degrading printing and dyeing wastewater by photocatalytic oxidation method |
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| CN202222597820.6U CN218491520U (en) | 2022-09-30 | 2022-09-30 | Device for degrading printing and dyeing wastewater by photocatalytic oxidation method |
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