CN1587085A - Rotary tubular photo-catalytic reactor and its water treating method - Google Patents
Rotary tubular photo-catalytic reactor and its water treating method Download PDFInfo
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- CN1587085A CN1587085A CN 200410071921 CN200410071921A CN1587085A CN 1587085 A CN1587085 A CN 1587085A CN 200410071921 CN200410071921 CN 200410071921 CN 200410071921 A CN200410071921 A CN 200410071921A CN 1587085 A CN1587085 A CN 1587085A
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Abstract
The rotary tubular photocatalytic reactor includes water trough with water inlet and water outlet, ultraviolet lamp set onto side of the water trough, rotary drum, which has bearing plates and supports in two ends and is set inside the water trough, speed regulating motor meshed to gear on the outer wall of the rotary drum for driving, and thin titania photocatalyst layer painted to the inner wall of the water trough. The present invention has rotary drum as the main body of the reactor and titania photocatalyst layer loaded onto the rotary drum, regulates the rotation speed of the rotary drum to alter the distribution of treated waste water and photocatalyst and to increase the contact area between the catalyst, reactant and light source, and has low power consumption, low treating cost, mild treating condition and other advantages.
Description
Technical field
The present invention relates to a kind of photochemical catalysis treatment reaction device and relevant treatment process.
Background technology
The characteristics that the photochemical catalysis water technology is wide with its suitability, service efficiency is high are just moved towards practical application from the laboratory.At this moment, reactor design has become this technology and whether can realize industrialized important step.Photocatalytic water treatment reactor is that light source, catalyzer and treatment solution are combined together, and can make it to become and bring into play the place that light-catalyzed reaction is disposed of sewage to greatest extent, and therefore, it should have the fundamental characteristics that catalyzer, treatment solution, photon are fully contacted.Processing intensity is big, processing cost is low, wide adaptability is the basic demand to photocatalytic water treatment reactor.
At present, photocatalytic water treatment reactor mainly contains two big classes: a class is with the fixed-bed reactor (contain membrane reactor) of catalyst cupport on carrier, and another kind of is directly to use the fine grain slurry bed reactor of catalyst raw powder.The former catalyzer cost of manufacture height, light transmission are poor, and are not easy to the replacing of decaying catalyst; The latter's catalyzer is suspended in the processed liquid, though catalyst updating is very easy, separates and has any problem.The setting of light source also has two kinds of methods, and a kind of is only to be the direct irradiation formula of communication media with the air; Another kind be with see through ultraviolet ray preferably material and air jointly as the indirect illuminaton of communication media.In addition, reactor can be made into open Open architecture, also can be semi-closed structure, and the mode by aeration provides oxygen source.Because reaction unit has various array modes flexibly, certainly will have preferred scheme.The good distribution of catalyzer, treatment solution and light is the optimization aim of reactor design.US6409928 has designed a kind of photo catalysis reactor of loaded film, and CN1124986 has designed the photo catalysis reactor that has the mechanical lifting device, and both disposable load type catalyzer also can be used for starching the attitude system.The common feature that existing reactors had is: the main part of reactor is an immobilized, the distribution of treatment solution and catalyzer is to rely on the catalytic amount of rate of flow of fluid and adding or load to be regulated, and this regulative mode can have influence on the treatment capacity of reactor.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, drum photocatalysis reactor is provided.
Another object of the present invention provides the method that adopts drum photocatalysis reactor to carry out water treatment.
First kind of drum photocatalysis reactor, comprise tank, ultraviolet lamp, rotating cylinder, described tank is provided with water-in and water outlet, and the two ends of described rotating cylinder are connected with support by the back up pad that is provided with bearing, described rotating cylinder is horizontally set in the described tank, buncher carries out transmission by the gear interlock on timing belt and the rotating cylinder outer wall, scribbles the titanium dioxide optical catalyst thin layer on the inwall of described rotating cylinder, and described ultraviolet lamp is arranged on the tapping of the one or both sides of described tank.
The setting of described ultraviolet lamp make its light with the θ angular illumination on the inwall of rotating cylinder, described θ represents with following formula at the angle:
Described L is the length of rotating cylinder, and described l is the distance of ultraviolet lamp apart from the rotating cylinder near-end, and described d is the diameter of rotating cylinder.Described θ angle is the input angle of ultraviolet light source.
Second kind of drum photocatalysis reactor, comprise tank, ultraviolet lamp, rotating cylinder, described tank is provided with water-in and water outlet, and an end of described rotating cylinder is connected with bracing frame by central shaft, the other end of described rotating cylinder is connected with buncher by central shaft, bracing frame, described rotating cylinder is horizontally set in the described tank, and described ultraviolet lamp is arranged on the top of described rotating cylinder and parallel with described rotating cylinder, is provided with reflection shield above described ultraviolet lamp.
A kind of method for the treatment of water, comprising the steps: that (1) adds in drum photocatalysis reactor contains TiO
2The waste water of catalyst fines, described drum photocatalysis reactor, comprise tank, ultraviolet lamp, rotating cylinder, described tank is provided with water-in and water outlet, one end of described rotating cylinder is connected with bracing frame by central shaft, and the other end of described rotating cylinder is connected with buncher by central shaft, bracing frame, and described rotating cylinder is horizontally set in the described tank, described ultraviolet lamp is arranged on the top of described rotating cylinder and parallel with described rotating cylinder, is provided with reflection shield above described ultraviolet lamp; (2) 1/3～1/2 of rotating cylinder vertical height is immersed in the waste water, starts described buncher, described buncher drives described rotating cylinder rotation, and forms the adjustable slurry attitude liquid film of a layer thickness at the rotating cylinder outside surface; (3) open ultraviolet lamp, allow the UV-light vertical irradiation to the slurry attitude liquid film of described rotating cylinder outer wall, the ratio of adding of catalyzer is in the described waste water: 0.2g/L～1.2g/L.
The ratio of adding of catalyzer is in the described waste water: 0.6g/L～1.0g/L.
The present invention is that the main part with reactor is designed to drum-type, supported catalyst TiO on rotating cylinder
2Film changes the distribution of handling waste water and catalyzer by the rotating speed of regulating rotating cylinder, has increased the contact surface between catalyzer, reactant and the light source.And compare with dull and stereotyped direct-injection type reactor, it is little to have floor space, the characteristics that catalyst surface liquid renewal speed is fast.
In addition, reactant and catalyzer are under the dual function of centrifugal force and gravity, and liquid contacts more abundant with catalyzer.The internal radiation mode that will generally adopt is at present changed into direct-injection type simultaneously, and the thin electrolyte film on catalyst film surface directly contacts with light on the rotating cylinder, thereby has strengthened the zone of illumination.This array mode can effectively utilize luminous energy, the small amount of ozone that produces in the UV-irradiation process can be used to quicken organic oxidative degradation again in air.The amplification of reactor is also than being easier in addition.
Energy consumption of the present invention is low, only needs little amount of catalyst, and processing cost is low.The treatment condition gentleness normally just can decolour under normal temperature, normal pressure, degrade, reduces COD, is an ideal water purification process process.
Description of drawings
Fig. 1 is first kind of drum photocatalysis reactor structural representation;
Fig. 2 is first kind of drum photocatalysis reactor side schematic view;
Fig. 3 is that first kind of drum photocatalysis reactor rotating cylinder rotates the illumination synoptic diagram;
Fig. 4 is second kind of drum photocatalysis reactor structural representation;
Fig. 5 is second kind of drum photocatalysis reactor side schematic view;
Fig. 6 is that second kind of drum photocatalysis reactor rotating cylinder rotates the illumination synoptic diagram;
Fig. 7 is rotating cylinder and a ultraviolet lamp relative position synoptic diagram in first kind of drum photocatalysis reactor
Fig. 8 is for adopting the photochemical catalysis design sketch of second kind of drum photocatalysis reactor.
Embodiment
First kind of drum photocatalysis reactor, comprise tank 4, ultraviolet lamp 2, rotating cylinder 1, tank 4 are provided with water-in 6 and water outlet 7, and the two ends of rotating cylinder 1 are connected with support 9 by the back up pad 3 that is provided with bearing, rotating cylinder 1 is horizontally set in the tank 4, buncher 5 carries out transmission by timing belt 8 and the gear interlock on rotating cylinder 1 outer wall, scribbles titanium dioxide optical catalyst thin layer 10 on the inwall of rotating cylinder, and ultraviolet lamp 2 is arranged on the tapping of the one or both sides of tank 4.
On the inwall of Glass tubing, described θ represents with following formula at the angle light of ultraviolet lamp 2 with the θ angular illumination:
When the length L of rotating cylinder 1 is 5 times rotating cylinder 1 diameter d, when light source 2 and rotating cylinder 1 near-end were 1 times d apart from l, then the θ angle was
Promptly 4.76 °＜| θ |＜26.56 °
Second kind of drum photocatalysis reactor, comprise tank 17, ultraviolet lamp 12, rotating cylinder 11, tank 17 are provided with water-in 14 and water outlet 15, and an end of rotating cylinder 11 is connected with bracing frame 16 by central shaft, the other end of rotating cylinder 11 is connected with buncher 18 by central shaft, bracing frame 16, rotating cylinder 11 is horizontally set in the tank 17, and ultraviolet lamp 12 is arranged on the top of rotating cylinder 11 and parallel with rotating cylinder 11, is provided with reflection shield 13 above ultraviolet lamp 12.
Adding starting point concentration in first kind of drum photocatalysis reactor is the 4BS substantive dyestuff 5L of 5mg/L, and through reaction in 7 hours, the percent of decolourization of 4BS dyestuff reached 63.98%.
A kind of method for the treatment of water, comprising the steps: that (1) adds in second kind of drum photocatalysis reactor contains TiO
2The waste water of catalyst fines, described drum photocatalysis reactor, comprise tank 17, ultraviolet lamp 12, rotating cylinder 11, tank 17 is provided with water-in 14 and water outlet 15, one end of rotating cylinder 11 is connected with bracing frame 16 by central shaft, and the other end of rotating cylinder 11 is connected with buncher 18 by central shaft, bracing frame 16, and rotating cylinder 11 is horizontally set in the tank 17, ultraviolet lamp 12 is arranged on the top of rotating cylinder 11 and parallel with rotating cylinder 11, is provided with reflection shield 13 above ultraviolet lamp 12; (2) 1/3～1/2 of rotating cylinder 11 vertical heights are immersed in the waste water, start buncher 18, buncher drives 11 rotations of reactor rotating cylinder, and forms the adjustable liquid film of a layer thickness at the rotating cylinder outside surface; (3) open ultraviolet lamp 12, allow the UV-light vertical irradiation to the slurry attitude liquid film of rotating cylinder 11 outer walls, the ratio of adding of catalyzer is in the waste water: 0.2g/L.Photo catalysis reactor rotating cylinder 11 is 300mm, and radius is the cylindrical glass tube of 81mm, and its internal surface area is 0.15m
2
The method steps that adopts is with embodiment 2, and the ratio of adding of catalyzer is in the waste water: 1.2g/L.
Embodiment 4
The method steps that adopts is with embodiment 2, and the ratio of adding of catalyzer is in the waste water: 0.6g/L.
The method steps that adopts is with embodiment 2, and the ratio of adding of catalyzer is in the waste water: 1.0g/L.
Embodiment 6
Adopt the photochemical catalysis effect of second kind of drum photocatalysis reactor, the ratio of adding of catalyzer is in the waste water: 0.2g/L
Get a certain amount of black direct dye respectively, sun-proof is emerald green, X-GRRL is blue, the gorgeous orange dyestuff of X-GN, is made into 20mg.L
-1Solution for standby, survey its absorbancy.Get each 5L of above-mentioned solution respectively, place in second kind of drum photocatalysis reactor, answered 7 hours, sampling, the variation of surveying its colourity, experimental result is as shown in table 1.
Table 1: the chroma removal rate of different dyes
| Dyestuff | Colourity | Chroma removal rate/% | |
| Former water (doubly) | Reaction back water outlet (doubly) | ||
| The gorgeous orange black of the blue X-GN of the emerald green X-GRRL of sun-proof | ????300 ????500 ????800 ????1100 | ????4 ????2 ????350 ????4 | ????78.67 ????79.6 ????46.25 ????79.64 |
As shown in Table 1, light-catalyzed reaction all has good effect of removing to green, blue look, black dyes, but not really desirable to the removal effect of orange dye.
Embodiment 7
Adopt the photochemical catalysis effect of second kind of drum photocatalysis reactor
Get Tianjin textile printing and dyeing company and always arrange saliva, rinse water, add each 5L of stablizer rinse water, place in the reaction unit, reacted 5 hours, the variation of surveying its chemical oxygen demand cod, colourity, experimental result is as shown in Figure 8.
Claims (5)
1. drum photocatalysis reactor, comprise tank, ultraviolet lamp, rotating cylinder, described tank is provided with water-in and water outlet, the two ends that it is characterized in that described rotating cylinder are connected with support by the back up pad that is provided with bearing, described rotating cylinder is horizontally set in the described tank, buncher carries out transmission by the gear interlock on timing belt and the rotating cylinder outer wall, scribble the titanium dioxide optical catalyst thin layer on the inwall of described rotating cylinder, described ultraviolet lamp is arranged on the tapping of the one or both sides of described tank.
2. a kind of drum photocatalysis reactor according to claim 1, the setting that it is characterized in that described ultraviolet lamp make its light with the θ angular illumination on the inwall of rotating cylinder, described θ represents with following formula at the angle:
Described L is the length of rotating cylinder, and described l is the distance of ultraviolet lamp apart from the rotating cylinder near-end, and described d is the diameter of rotating cylinder, and described θ angle is the input angle of ultraviolet light source.
3. drum photocatalysis reactor, comprise tank, ultraviolet lamp, rotating cylinder, described tank is provided with water-in and water outlet, it is characterized in that an end of described rotating cylinder is connected with bracing frame by central shaft, the other end of described rotating cylinder is connected with buncher by central shaft, bracing frame, described rotating cylinder is horizontally set in the described tank, and described ultraviolet lamp is arranged on the top of described rotating cylinder and parallel with described rotating cylinder, is provided with reflection shield above described ultraviolet lamp.
4. the method for a treating water, comprising the steps: that (1) adds in drum photocatalysis reactor contains TiO
2The waste water of catalyst fines, described drum photocatalysis reactor, comprise tank, ultraviolet lamp, rotating cylinder, described tank is provided with water-in and water outlet, one end of described rotating cylinder is connected with bracing frame by central shaft, and the other end of described rotating cylinder is connected with buncher by central shaft, bracing frame, and described rotating cylinder is horizontally set in the described tank, described ultraviolet lamp is arranged on the top of described rotating cylinder and parallel with described rotating cylinder, is provided with reflection shield above described ultraviolet lamp; (2) 1/3～1/2 of rotating cylinder vertical height is immersed in the waste water, starts described buncher, described buncher drives described rotating cylinder rotation, and forms the adjustable slurry attitude liquid film of a layer thickness at the rotating cylinder outside surface; (3) open ultraviolet lamp, allow the UV-light vertical irradiation to the slurry attitude liquid film of described rotating cylinder outer wall, the ratio of adding of catalyzer is in the described waste water: 0.2g/L～1.2g/L.
5. the method for a kind for the treatment of water according to claim 4 is characterized in that the ratio of adding of catalyzer in the described waste water is: 0.6g/L～1.0g/L.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335161C (en) * | 2005-05-26 | 2007-09-05 | 上海交通大学 | Photoelectrocatalytic thin-layered minisize reactor |
| CN100348506C (en) * | 2005-10-18 | 2007-11-14 | 南京大学 | Efficient photocatalytic water-treating process and apparatus |
| CN100366584C (en) * | 2005-07-05 | 2008-02-06 | 南京大学 | Preparation method of TiO2 photocatalyst for loading on ceramic surface |
| CN101900681A (en) * | 2010-07-23 | 2010-12-01 | 哈尔滨工业大学 | Water body chemical oxygen demand rapid measurement device |
| CN102491449A (en) * | 2011-12-14 | 2012-06-13 | 常州大学 | Water-treatment photocatalysis reaction device |
| CN102491467A (en) * | 2011-12-07 | 2012-06-13 | 山东大学 | Rotary dye waste water decolorizing device and manufacturing method of adsorption plate |
| CN102515303A (en) * | 2011-12-23 | 2012-06-27 | 常州大学 | Device for photocatalytic abatement of organic pollution of riverway |
| CN102553509A (en) * | 2012-02-14 | 2012-07-11 | 江苏星晨环保集团有限公司 | Photocatalysis reaction apparatus and its application |
| CN102683198A (en) * | 2011-03-14 | 2012-09-19 | 富士通株式会社 | Etching method, method for manufacturing semiconductor device, and etching device |
| CN104973650A (en) * | 2015-07-31 | 2015-10-14 | 河海大学 | Multi-layer drum type photocatalysis purification tank applicable to farmland drainage canal |
| CN105000622A (en) * | 2015-01-14 | 2015-10-28 | 苏州科技学院 | Photocatalytic reactor |
| CN105439241A (en) * | 2016-01-06 | 2016-03-30 | 江苏大学 | Waste water treatment device based on thin-layer water film ultraviolet-light-catalyzed waste water |
| CN107098542A (en) * | 2017-06-22 | 2017-08-29 | 广西国宏智鸿环境科技发展有限公司 | A kind of solar energy domestic sewage processing system |
| CN109647312A (en) * | 2019-01-24 | 2019-04-19 | 王冠宇 | A kind of novel photocatalysis reactor |
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| CN100383056C (en) * | 2004-09-09 | 2008-04-23 | 天津理工大学 | Drum photocatalysis reactor |
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- 2004-09-09 CN CN 200410071921 patent/CN1277756C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335161C (en) * | 2005-05-26 | 2007-09-05 | 上海交通大学 | Photoelectrocatalytic thin-layered minisize reactor |
| CN100366584C (en) * | 2005-07-05 | 2008-02-06 | 南京大学 | Preparation method of TiO2 photocatalyst for loading on ceramic surface |
| CN100348506C (en) * | 2005-10-18 | 2007-11-14 | 南京大学 | Efficient photocatalytic water-treating process and apparatus |
| CN101900681A (en) * | 2010-07-23 | 2010-12-01 | 哈尔滨工业大学 | Water body chemical oxygen demand rapid measurement device |
| CN102683198A (en) * | 2011-03-14 | 2012-09-19 | 富士通株式会社 | Etching method, method for manufacturing semiconductor device, and etching device |
| US10508343B2 (en) | 2011-03-14 | 2019-12-17 | Fujitsu Limited | Etching method for manufacturing semiconductor device |
| CN102491467A (en) * | 2011-12-07 | 2012-06-13 | 山东大学 | Rotary dye waste water decolorizing device and manufacturing method of adsorption plate |
| CN102491449A (en) * | 2011-12-14 | 2012-06-13 | 常州大学 | Water-treatment photocatalysis reaction device |
| CN102515303B (en) * | 2011-12-23 | 2013-10-30 | 常州大学 | Device for photocatalytic abatement of organic pollution of riverway |
| CN102515303A (en) * | 2011-12-23 | 2012-06-27 | 常州大学 | Device for photocatalytic abatement of organic pollution of riverway |
| CN102553509A (en) * | 2012-02-14 | 2012-07-11 | 江苏星晨环保集团有限公司 | Photocatalysis reaction apparatus and its application |
| CN102553509B (en) * | 2012-02-14 | 2014-04-09 | 无锡中欧环保科技有限公司 | Photocatalysis reaction apparatus and its application |
| CN105000622A (en) * | 2015-01-14 | 2015-10-28 | 苏州科技学院 | Photocatalytic reactor |
| CN104973650A (en) * | 2015-07-31 | 2015-10-14 | 河海大学 | Multi-layer drum type photocatalysis purification tank applicable to farmland drainage canal |
| CN104973650B (en) * | 2015-07-31 | 2017-06-30 | 河海大学 | A kind of multilayer drum-type light catalytic purifying pond suitable for agriculture drainage ditch |
| CN105439241A (en) * | 2016-01-06 | 2016-03-30 | 江苏大学 | Waste water treatment device based on thin-layer water film ultraviolet-light-catalyzed waste water |
| CN107098542A (en) * | 2017-06-22 | 2017-08-29 | 广西国宏智鸿环境科技发展有限公司 | A kind of solar energy domestic sewage processing system |
| CN109647312A (en) * | 2019-01-24 | 2019-04-19 | 王冠宇 | A kind of novel photocatalysis reactor |
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