CN113023866A - Reflective photocatalysis waste water treatment device - Google Patents
Reflective photocatalysis waste water treatment device Download PDFInfo
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- CN113023866A CN113023866A CN202110391441.9A CN202110391441A CN113023866A CN 113023866 A CN113023866 A CN 113023866A CN 202110391441 A CN202110391441 A CN 202110391441A CN 113023866 A CN113023866 A CN 113023866A
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 51
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 19
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000002351 wastewater Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000011159 matrix material Substances 0.000 claims description 9
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 5
- 239000005751 Copper oxide Substances 0.000 claims description 5
- 229910000431 copper oxide Inorganic materials 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 9
- 238000004043 dyeing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241000254032 Acrididae Species 0.000 description 3
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011858 nanopowder Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a reflective photocatalysis waste water treatment device which can be used when external ultraviolet rays such as the sun are sufficient or insufficient, and can ensure that a water treatment cavity is internally provided with a porous body which is irradiated by sufficient ultraviolet rays, so that printing and dyeing waste water can be continuously treated, and the industrial adaptability is good. In addition, the continuous holes of the porous body are distributed in a gradient manner from inside to outside and are gradually coarse, so that when an external light source (sun) is adopted, external ultraviolet rays which are dispersed per se can penetrate into the center of the porous body from the large holes and are projected to the center of the porous body, and the effect of the light-gathering cover is matched to realize that the whole porous body can receive sufficient ultraviolet rays; when adopting inside ultraviolet lamp, because the light source sends in inside, the ultraviolet ray is comparatively concentrated, can throw to the outside from inside fine and close continuous hole, and the continuous reflection of cooperation snoot has also ensured that whole porous body can receive sufficient ultraviolet ray, and then has ensured the processing printing and dyeing waste water that two kinds of operating condition homoenergetic are stable.
Description
Technical Field
The invention relates to equipment for treating wastewater or sewage, in particular to a reflective photocatalytic wastewater and sewage treatment device.
Background
The waste water of the printing and dyeing industry contains a large amount of organic pollutants, methylene orange is the most common pollutant, the common degradation method is difficult to remove, and serious ecological pollution is caused when the methylene orange enters the nature. The photocatalytic decomposition material matrix can generate free radicals under the irradiation of ultraviolet rays to oxidize and decompose organic pollutant methylene orange, and the method is efficient and environment-friendly.
The existing photocatalytic decomposition sewage treatment medium can be divided into a powder type and a film type, the powder type photocatalytic nano powder has larger specific surface area and good catalytic effect, and can be recovered by doping magnetic substances to assist the photocatalytic nano powder, but the problems of powder loss, difficult recovery and reuse and the like exist; the film type forms the photocatalysis film on the fixed substrate, is convenient to recover, but reduces the specific surface area of the photocatalysis material, and has thin coating thickness and easy damage and failure.
In addition, the existing photocatalytic wastewater treatment device generally adopts a single solar light source or a single artificial light source, and cannot continuously work when the light source is insufficient, so that the industrial adaptability is insufficient. When two light sources are arranged, how to ensure that enough processing efficiency can be obtained by switching any one light source is still the problem to be solved.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides a reflective photocatalytic wastewater treatment device which can stably and continuously treat printing and dyeing wastewater.
The technical scheme is as follows: the invention relates to a reflective photocatalysis waste water treatment device, which comprises: the supporting device is provided with a bracket and a sliding block, the bracket is provided with a first position and a second position which are arranged up and down, the sliding block is constructed to be capable of sliding between the first position and the second position, and a vertical pull rope furling hole is arranged above the first position; the photocatalytic reactor is connected with and slides along the sliding block and comprises a light-transmitting sleeve, a water inlet device, a water drainage device, a porous body and an ultraviolet lamp; a water treatment chamber is formed in the light-transmitting sleeve, and the water inlet device and the water discharge device are respectively connected with the light-transmitting sleeve and are used for introducing water into the water treatment chamber and discharging water outwards; the porous body is arranged in the water treatment chamber, the porous body is provided with a frame formed by a photocatalytic medium and continuous holes formed by the frame, and the continuous holes are distributed in a gradually coarse and sparse gradient manner from the central axis of the porous body to the outside; the ultraviolet lamp is arranged in the porous body along the central axis of the porous body; the light-gathering cover is constructed into a deformable flexible structure, two ends of the light-gathering cover are connected with pull ropes, and the pull ropes at the two ends respectively penetrate through the pull rope furling holes from top to bottom and are connected with the sliding blocks; when the sliding block is located at the first position, the light-gathering cover is arranged under the light-transmitting sleeve in an arc shape, and light rays irradiated from the upper part are reflected to the light-transmitting sleeve; when the sliding block slides to the second position, the sliding block pulls the pull rope, and the two ends of the light-gathering cover are folded into a cylindrical shape surrounding the light-transmitting sleeve to reflect light rays from the ultraviolet lamp to the light-transmitting sleeve.
The frame is a titanium dioxide frame and comprises a matrix formed by titanium dioxide and nano copper particles dispersed in the matrix. Pollutants are decomposed through the photocatalysis of the titanium dioxide frame under the irradiation of ultraviolet rays, and meanwhile, the conductivity of the porous body is improved through the nano copper particles, so that the photocatalytic decomposition efficiency of the porous body is improved.
Specifically, the preparation method of the porous body comprises the following steps: firstly, constructing a porous body model; and then, according to the constructed porous body model, melting and forming the mixture of the pure titanium powder and the copper oxide nano particles by adopting a selective laser melting and forming technology to obtain the porous body.
The light-gathering shade comprises a plurality of sequentially connected reflecting sheets, and the included angle between every two adjacent reflecting sheets is variable.
The reflecting surface of the condensing shade is taken as the inner surface and the backlight surface as the outer surface, a spring is arranged outside the connecting point of two adjacent reflecting sheets, and two ends of the spring are respectively connected with the adjacent surfaces of the two reflecting sheets; when the sliding block is positioned at the first position, the snoot is in an arc-shaped opening state under the action of the tension of each spring; when the sliding block slides to the second position, the sliding block pulls the pull rope to further draw the two ends of the light-gathering cover, and the light-gathering cover is made to be cylindrical by overcoming the pulling force of the spring.
The water inlet device comprises a water inlet sealing joint and a turbulent flow device; the water inlet sealing joint is connected to the end part of the light-transmitting sleeve, and a water inlet is formed in the water inlet sealing joint; the turbulence device is arranged in the light-transmitting sleeve and is communicated with the water inlet, and the turbulence device sends the waste water injected from the water inlet into the porous body in a turbulent flow direction.
The turbulent device comprises a nozzle and a turbulent disc; the nozzle is provided with a water inlet cavity communicated with the water inlet and a plurality of bent flow channels which are led out from the water inlet cavity and are arranged at intervals in the circumferential direction, and the water outlet ends of the plurality of bent flow channels form a nozzle of the nozzle; the turbulence disc is circular, is arranged in front of the nozzle and is coaxial with the light-transmitting sleeve, a plurality of water through holes are arranged on the turbulence disc, and the diameter of the water through holes close to the outer side is larger than that of the inner side along the radial direction of the turbulence disc.
Wherein, still include the stop device of porous body, stop device includes thimble, spring and spacing piece, the thimble is connected turbulence device is last and along the telescopic axial of printing opacity extends forward, spacing piece cover is established on the thimble, turbulence device and spacing piece are connected respectively at the spring both ends.
The drainage device comprises a drainage sealing joint, the drainage sealing joint is connected to the other end of the light-transmitting sleeve, and a drainage port is formed in the drainage sealing joint.
The working principle is as follows: the device can adjust the shape of the light-gathering cover and the relative position relation between the light-gathering cover and the light-transmitting sleeve by adjusting the position of the sliding block on the bracket, thereby realizing two working states. The first operating state is: when external ultraviolet rays such as the sun are sufficient, the sliding block is arranged at the first position on the support, the light-gathering cover is arranged below the light-transmitting sleeve in an arc shape, the ultraviolet rays projected from the upper side can be reflected to the light-transmitting sleeve, particularly, the light rays at the position where the light rays on the lower surface of the light-transmitting sleeve cannot be directly irradiated are complemented through reflection, the ultraviolet rays can be uniformly received in the whole circumferential direction of the light-transmitting sleeve, and the water treatment chamber in the light-transmitting sleeve has sufficient ultraviolet rays, so that the photocatalysis efficiency is guaranteed. The second operating state is: when external ultraviolet rays such as the sun are insufficient, the sliding block is placed at a second position on the support, the light-transmitting sleeve moves downwards, and the light-gathering cover is folded into a cylindrical shape to wrap the whole light-transmitting sleeve. Ultraviolet rays irradiated by the ultraviolet lamp are projected out from the continuous holes of the porous body and are reflected back to the light-transmitting sleeve by the light-gathering cover, so that the water treatment chamber in the light-transmitting sleeve has sufficient ultraviolet rays, and the photocatalysis efficiency is also guaranteed. Of course, in the first medium operating state, the ultraviolet lamp may be selectively turned on or off.
Has the advantages that: compared with the prior art, the device can be used when external ultraviolet rays such as the sun are sufficient or insufficient, and the porous body can be ensured to be irradiated by sufficient ultraviolet rays in the water treatment cavity, so that the printing and dyeing wastewater can be continuously treated, and the industrial adaptability is better. In addition, the continuous holes of the porous body are distributed in a gradient manner from inside to outside, namely the external holes are larger and looser, and the inside is smaller and finer, so that when an external light source (sun) is adopted, external ultraviolet rays which are dispersed and weaker per se can penetrate into the center of the porous body from the large holes and can be projected to the center of the porous body, and the effect of the light-gathering cover is matched to realize that the whole porous body can receive sufficient ultraviolet rays; when adopting inside ultraviolet lamp, because the light source sends in inside, the ultraviolet ray is comparatively concentrated strong, can throw to the outside from inside fine and close continuous hole, and the cooperation snoot constantly reflects, has also ensured that whole porous body can receive sufficient ultraviolet ray, and then has ensured the processing printing and dyeing waste water that two kinds of operating condition homoenergetic can be stable.
Drawings
FIG. 1 is a schematic structural view of the reflective photocatalytic wastewater treatment device viewed in the axial direction of the light-transmitting sleeve when the light-gathering cover is unfolded;
FIG. 2 is a schematic view of the position of the snoot and light sleeve of FIG. 1;
FIG. 3 is a schematic structural view of the reflective photocatalytic wastewater treatment device viewed along the axial direction of the light-transmitting sleeve when the light-gathering cover is folded;
FIG. 4 is a schematic view of the position of the snoot and light sleeve of FIG. 3;
FIG. 5 is a cross-sectional view taken along line A-A of the photocatalytic reactor of FIG. 1;
FIG. 6 is a schematic view of the arrangement of water holes of the turbulence disk;
fig. 7 is a schematic model of a porous body.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The main components of the reflective photocatalysis waste water treatment device comprise a supporting device, a photocatalysis reactor and a light-gathering cover 9.
As shown in fig. 1 to 4, the supporting device is used for supporting the photocatalytic reactor and the light-gathering cover 9 on one hand, and is used for adjusting the shape change of the light-gathering cover 9 and the relative position state of the light-gathering cover and the photocatalytic reactor in a matching way on the other hand.
Specifically, the supporting device comprises a bracket 1, a sliding block 2 and a pull rope furling hole 3. The support 1 is provided with a stand column at two ends of the photocatalytic reactor respectively, a slide block track arranged along the vertical direction is arranged on the stand column, a slide block 2 is arranged inside the slide block track, and a pull rope furling hole 3 is arranged above the slide block track. In this embodiment, the slider rail is provided in the form of a through slot as shown in the figure, the top of the through slot is the first position in the description of the present invention, and the bottom is the second position.
Referring to fig. 5, in the present embodiment, the sliding block 2 is integrally connected to the water-tight joint 51 of the photocatalytic reactor, or both are integrally formed directly during the manufacturing process. A water inlet 52 is arranged on the slide block 2 along the axial direction, and a groove is arranged on the surface of the slide block 2 and clamped in the through groove of the bracket 1 to slide in a matching way. Of course, in other embodiments, the sliding block 2 may also be an independent component in the sliding rail, which does not perform the function of water inlet, and the photocatalytic reactor may be connected with the sliding block to slide.
The pull rope drawing hole 3 is used for drawing the pull ropes 10 on the two sides downwards to the middle when drawing the pull ropes 10 on the two sides, and can also be realized in various forms, for example, a single vertical through hole is directly formed on the stand column to simultaneously penetrate two pull ropes 10, or two parallel vertical through holes are formed to respectively penetrate one pull rope 10, and two symmetrical pulleys can also be installed on the stand column. As long as the pulling ropes 10 at both sides can be pulled downward, the pulling ropes 10 at both sides can be folded toward the middle. The pull ropes 10 at the two ends of the snoot 9 penetrate through the pull rope furling holes 3 from top to bottom and are connected to the sliding block 2, so that when the sliding block 2 slides downwards, the pull ropes 10 can be pulled downwards to enable the pull ropes 10 at the two sides to be gathered.
The light-gathering cover 9 can be bent and deformed as a whole and belongs to a deformable flexible structure. In this embodiment, a plurality of reflective sheets 91 are hinged in sequence by hinges, and springs 92 are further provided outside the hinges to connect adjacent sides of the two reflective sheets 91. When the sliding block 2 is at the first position at the top end of the through groove, the snoot 9 is in an arc-shaped opening state under the action of the tension of each spring 92, and the sliding block is fixed at the first position by tensioning the pull rope 10. At this time, the inner arc surface (upper surface) of the light-collecting cover is the light-reflecting surface of each light-reflecting sheet 91, and the outer arc surface (lower surface) is the backlight surface. When the slider 2 is pulled down to the second position by the manual pull ring 14 connected with the slider 2, the slider 2 pulls the pull ropes 10 at both ends to draw both ends of the light gathering cover 9, and the light gathering cover 9 is made to assume a cylindrical shape against the pulling force of the spring 92.
Of course, in other embodiments, the light-gathering cover 9 can also be made by coating a reflective medium on a whole flexible sheet with certain toughness, such as an acrylic sheet. When the sliding block 2 is at the first position at the top end of the through groove, the light-gathering cover 9 is in a state of being pulled by the pull rope 10, and presents an arc shape required by reflection, and the self resilience force tensions the pull rope 10 to fix the sliding block 2 at the first position. The inner arc surface (upper surface) is a reflecting surface coated with a reflecting medium, and the outer arc surface (lower surface) is a backlight surface. When the sliding block 2 is pulled down to the second position at the bottom end of the through groove through the manual pull ring 14, the two ends of the light-gathering cover 9 are gathered towards the top of the pull rope gathering hole 3 under the action of the pulling force of the pull rope 10, and the light-gathering cover is cylindrical under the action of the elasticity of the light-gathering cover.
Referring also to fig. 5, the photocatalytic reactor has a generally cylindrical cross-section and is coaxially connected to the sliders 2 at both ends. When the slide block 2 is in the first position, the light-gathering shade 9 is arranged below the photocatalytic reactor, the focus of the reflecting surface of the light-gathering shade is mainly concentrated on the light-transmitting sleeve 4 of the photocatalytic reactor, and light rays irradiated from the upper part are reflected to the light-transmitting sleeve 4. When the slide block 2 is pulled down to the second position, the photocatalytic reactor is also moved down to the axial position of the cylinder formed by the light-gathering cover 9, the two are approximately concentric, and the light-gathering cover 9 reflects the light from the ultraviolet lamp 8 to the light-transmitting sleeve 4.
Specifically, the main components of the photocatalytic reactor include a light-transmitting sleeve 4, a water inlet device 5, a water discharge device 6, a porous body 7, an ultraviolet lamp 8 and a limiting device. The light-transmitting sleeve 4 is made of quartz, and a water inlet device 5 and a water discharge device 6 are respectively connected to two ends of the light-transmitting sleeve.
The water inlet device 5 mainly comprises two parts, namely a water inlet sealing joint 51 and a turbulent device. The water inlet sealing joint 51 is approximately a circular cover, the slide block 2 is coaxially arranged at the center, the water inlet 52 penetrates from the outside to the inside, and the aperture of the water inlet 52 is gradually reduced. The water inlet sealing joint 51 and the light-transmitting sleeve 4 are sealed by a plurality of layers of sealing gaskets to avoid liquid leakage.
The turbulent device is used for disturbing the flow direction of the waste water and comprises a nozzle 53 coaxially connected to the inner side of the water inlet sealing joint 51 and a turbulent disc 54 arranged at the front part of the nozzle 53. The inlet chamber 53a of the nozzle 53 is coaxially communicated with the inlet 52, and the wastewater injected from the inlet 52 is first collected and circulated in the inlet chamber 53a and then discharged through a plurality of curved flow paths 53b communicating with the inlet chamber 53 a. The curved flow path 53b extends obliquely rearward of the nozzle 53 at the middle position of the water inlet chamber 53a and then turns to extend obliquely forward of the nozzle 53, so that the discharged water flows in different directions and is discharged in a turbulent flow state as much as possible.
The turbulent device is also connected to the limiting device, please refer to fig. 5 and fig. 6, the thimble 11 is coaxially connected to the nozzle 53 and extends forward, and the circle center of the turbulent disc 54 is provided with a mounting hole, which is fixed on the thimble 11 in a sleeving manner. The turbulence disk 54 is provided with a plurality of circles of water holes 54a, and along the radial direction of the turbulence disk 54, the diameter of the water holes 54a on the outer side is larger than that on the inner side. The nozzles 53 and the turbulence plate 54 cooperate to enhance the turbulence and disturb the flow direction of the liquid, thereby increasing the effective contact area between the printing and dyeing wastewater and the porous body 7.
The limiting sheet 13 is also sleeved on the thimble 11, and is connected with the turbulent flow disc 54 through the spring 12, when the porous body 7 is installed, the limiting sheet 13 limits and fixes the porous body 7 under the elastic force of the spring 12. The front end of the thimble 11 is also provided with a top plate for positioning the ultraviolet lamp 8.
Referring to fig. 7, the porous body 7 of the present invention is formed by forming a frame 71 of a photocatalytic medium to improve the stability of the photocatalytic medium, and forming continuous holes 72 through the frame 71 to increase the specific surface area of the photocatalytic medium. In order to improve the efficiency of the entire apparatus, the continuous pores 72 are gradually distributed in a coarse gradient from the central axis of the porous body 7 to the outside. When an external light source (sun) is adopted, external ultraviolet rays which are dispersed and weak can penetrate into the center of the porous body 7 from the large holes and project to the center of the porous body 7, and the sufficient ultraviolet rays can be received by the whole porous body 7 by matching with the reflection action of the light-gathering cover 9; when the internal ultraviolet lamp 8 is adopted, the light source is emitted inside, the ultraviolet rays are concentrated and strong, the ultraviolet rays can be projected to the outside from the internal fine continuous holes 72, the light-gathering cover 9 is matched for continuous reflection, the whole porous body can be guaranteed to receive sufficient ultraviolet rays, and the printing and dyeing wastewater can be stably treated in two working states.
In this embodiment, the porous body component is titanium dioxide doped with nano-copper particles, and the continuous pores are three-dimensional Thiessen polygonal pores. The preparation method adopts a selective laser melting forming technology and comprises the following steps:
firstly, constructing a porous body model according to the Thiessen polygon principle;
in this embodiment, rhinoceros software and a grasshopper plug-in are adopted, and the modeling step includes:
1. concentric cylinders with the diameter of 10mm, 20mm, 60mm and 100mm and the height of 150mm respectively;
2. generating 60 random points in a concentric cylinder with the outer diameter of 20mm, the inner diameter of 10mm and the height of 150 mm; generating 30 random points in a concentric cylinder with an outer diameter of 60mm, an inner diameter of 20mm and a height of 150 mm; generating 20 random points in a concentric cylinder with an outer diameter of 100mm, an inner diameter of 60mm and a height of 150 mm; the random point is generated by the Populate 3D function in the grasshopper plug-in.
3. Gathering all random points into an independent random dot matrix, and generating a Thiessen polygon concentric cylinder which is dense outside and sparse inside and is in gradient distribution by taking a concentric cylinder with an outer diameter of 100mm, an inner diameter of 10mm and a height of 150mm as a boundary condition and taking the random dot matrix as the body center of a three-dimensional Thiessen polygon through a Voronoi 3D function in a grasshopper plug-in unit;
4. reducing the three-dimensional Thiessen polygon in the concentric cylinder to 80 by taking the body center as the center, obtaining a point set on the boundary of the reduced three-dimensional Thiessen polygon, screening out the point set in the concentric cylinder, generating a new curved surface by using a Mash tool for the screened point set, and smoothing the curved surface by using a weaveBird plug-in;
5. and performing Boolean operation on the obtained smooth curved surface and the concentric cylinder to obtain a closed porous body model.
Then, the mixture of pure titanium powder and copper oxide nanoparticles was melt-formed by a selective laser melting forming technique according to the constructed porous body model, to obtain the porous body 7. In the forming process, pure titanium powder and nano copper oxide particles react in situ to generate a titanium dioxide matrix with a photocatalytic effect, copper oxide is reduced into nano copper particles which are dispersed and distributed in the titanium dioxide matrix to form a frame 71 together, and the nano copper particles improve the conductivity of the porous body 7 so as to improve the photocatalytic decomposition efficiency of the porous body.
The porous body 7 is formed in a hollow cylindrical shape, and an ultraviolet lamp 8 is inserted into a hollow portion.
The drain seal 61 of the drain 6 is also substantially a circular cover which is sealed to the other end of the light-transmitting sleeve 4 to prevent leakage by providing multiple layers of sealing gaskets. The slider 2 is coaxially installed at the center thereof, and the drain port 62 penetrates the inside and outside thereof. The inside of the drainage seal joint 61 is provided with a limit seal ring 63 which is blocked between the porous body 7 and the drainage seal joint 61, on one hand, the porous body 7 is limited, on the other hand, due to the T-shaped structure, the flange part is tightly attached to the light-transmitting sleeve, and the web part is connected to the inside of the drainage seal joint 61, thereby further enhancing the sealing performance of the drainage device 6.
In addition, the drainage sealing joint 61 is also provided with a threading hole 64, and a line led out from a lamp holder 81 of the ultraviolet lamp 8 can pass through the threading hole 64 to be electrified.
Claims (10)
1. A reflective photocatalytic wastewater treatment device, characterized by comprising:
the supporting device is provided with a bracket (1) and a sliding block (2), the bracket (1) is provided with a first position and a second position which are arranged up and down, the sliding block (2) is constructed to be capable of sliding between the first position and the second position, and a vertical stay cord furling hole (3) is arranged above the first position;
the photocatalytic reactor is connected with and slides along the sliding block (2), and comprises a light-transmitting sleeve (4), a water inlet device (5), a water drainage device (6), a porous body (7) and an ultraviolet lamp (8); a water treatment chamber is formed in the light-transmitting sleeve (4), and the water inlet device (5) and the water discharge device (6) are respectively connected with the light-transmitting sleeve (4) and are used for introducing water into the water treatment chamber and discharging water outwards; the porous body (7) is arranged in the water treatment chamber and is provided with a frame (71) formed by a photocatalytic medium and continuous holes (72) formed by the frame (71), and the continuous holes (72) are distributed in a gradually coarse and coarse gradient mode from the central axis of the porous body (7) to the outside; the ultraviolet lamp (8) is arranged inside the porous body (7) along the central axis thereof;
the light-gathering cover (9) is constructed into a deformable flexible structure, two ends of the light-gathering cover (9) are connected with pull ropes (10), and the pull ropes (10) at the two ends respectively penetrate through the pull rope furling holes (3) from top to bottom and are connected with the sliding block (2);
when the sliding block (2) is located at the first position, the light-gathering cover (9) is arranged under the light-transmitting sleeve (4) in an arc shape, and light rays irradiated from the upper part are reflected to the light-transmitting sleeve (4); when the sliding block (2) slides downwards to the second position, the sliding block (2) pulls the pull rope (10), the two ends of the light-gathering cover (9) are folded into a cylindrical shape surrounding the light-transmitting sleeve (4), and light rays from the ultraviolet lamp (8) are reflected to the light-transmitting sleeve (4).
2. A reflective photocatalytic waste water treatment device according to claim 1, characterized in that the frame (71) is a titanium dioxide frame comprising a matrix formed of titanium dioxide and nano-copper particles dispersed in the matrix.
3. A reflective photocatalytic wastewater treatment device according to claim 1, characterized in that the continuous hole (72) is a three-dimensional taison polygonal continuous hole.
4. A reflective photocatalytic waste water treatment apparatus according to any one of claims 1 to 3, characterized in that the porous body (7) is prepared by the steps of: firstly, constructing a porous body model; and then, according to the constructed porous body model, adopting a selective laser melting forming technology to melt and form the mixture of the pure titanium powder and the copper oxide nano particles to obtain the porous body (7).
5. A reflective photocatalytic wastewater treatment device according to claim 1, characterized in that the light-gathering shield (9) comprises a plurality of reflectors (91) connected in sequence, and the included angle between two adjacent reflectors (91) is variable.
6. A reflection type photocatalysis waste water treatment device according to claim 5, wherein the reflection surface of the light-gathering cover (9) is taken as the inner surface and the back surface as the outer surface, a spring (92) is arranged outside the connection point of two adjacent reflection sheets (91), and the two ends of the spring (92) are respectively connected with the adjacent surfaces of the two reflection sheets (91); when the sliding block (2) is positioned at the first position, the snoot (9) is in an arc-shaped opening state under the action of the tension of the springs (92); when the sliding block (2) slides to the second position, the sliding block (2) pulls the pull rope (10) to further draw the two ends of the light-gathering cover (9), and the light-gathering cover (9) is made to be cylindrical by overcoming the pulling force of the spring (92).
7. A reflective photocatalytic waste water treatment device according to claim 1, characterized in that the water inlet means (5) comprises a water inlet sealing joint (51) and a turbulent flow means; the water inlet sealing joint (51) is connected to the end part of the light-transmitting sleeve (4), and a water inlet (52) is arranged on the water inlet sealing joint; the turbulence device is arranged in the light-transmitting sleeve (4) and is communicated with the water inlet (52), and the turbulence device sends the waste water injected from the water inlet (52) into the porous body (7) in a turbulent flow direction.
8. A reflective photocatalytic waste water treatment device according to claim 7, characterized in that the turbulent device comprises a nozzle (53) and a turbulent disk (54); the nozzle (53) is provided with a water inlet cavity (53a) communicated with the water inlet (52) and a plurality of bent flow channels (53b) which are led out from the water inlet cavity (53a) and are arranged at intervals in the circumferential direction, and the water outlet ends of the plurality of bent flow channels (53b) form a nozzle of the nozzle (53); the turbulence disc (54) is circular, is arranged in front of the nozzle and is coaxial with the light-transmitting sleeve (4), a plurality of water through holes (54a) are arranged on the turbulence disc, and the diameter of the water through holes (54a) close to the outer side is larger than that of the inner side along the radial direction of the turbulence disc (54).
9. A reflection type photocatalytic wastewater treatment device according to claim 7 or 8, further comprising a limiting device of the porous body (7), wherein the limiting device comprises an ejector pin (11), a spring (12) and a limiting sheet (13), the ejector pin (11) is connected to the turbulent flow device and extends forwards along the axial direction of the light-transmitting sleeve (4), the limiting sheet (13) is sleeved on the ejector pin (11), and two ends of the spring (12) are respectively connected with the turbulent flow device and the limiting sheet (13).
10. A reflective photocatalytic wastewater treatment device according to claim 1, characterized by that the drainage device (6) comprises a drainage sealing joint (61), the drainage sealing joint (61) is connected to the other end of the light-transmitting sleeve (4), on which a drainage port (62) is provided.
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