CN104150561A - Photocatalytic disinfection reactor used for disinfecting reclaimed water and rainwater, photocatalysis material and preparation method thereof, application and application method thereof - Google Patents
Photocatalytic disinfection reactor used for disinfecting reclaimed water and rainwater, photocatalysis material and preparation method thereof, application and application method thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 83
- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 230000001699 photocatalysis Effects 0.000 title abstract description 18
- 230000000249 desinfective effect Effects 0.000 title abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 37
- 239000010935 stainless steel Substances 0.000 claims abstract description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000010453 quartz Substances 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 13
- 239000004917 carbon fiber Substances 0.000 claims abstract description 13
- 239000011941 photocatalyst Substances 0.000 claims description 32
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 29
- 230000001954 sterilising effect Effects 0.000 claims description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 230000000630 rising effect Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000002070 germicidal effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229960004418 trolamine Drugs 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 23
- 241000894006 Bacteria Species 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 12
- 238000011068 loading method Methods 0.000 abstract description 5
- 239000005416 organic matter Substances 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 22
- 239000004408 titanium dioxide Substances 0.000 description 10
- 239000010865 sewage Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 4
- 235000020188 drinking water Nutrition 0.000 description 4
- -1 hydroxyl radical free radical Chemical class 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000009849 deactivation Effects 0.000 description 3
- 239000000645 desinfectant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 230000000721 bacterilogical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000000968 intestinal effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000000010 microbial pathogen Species 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
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- 239000010457 zeolite Substances 0.000 description 2
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- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 102000004169 proteins and genes Human genes 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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- ZWYDDDAMNQQZHD-UHFFFAOYSA-L titanium(ii) chloride Chemical compound [Cl-].[Cl-].[Ti+2] ZWYDDDAMNQQZHD-UHFFFAOYSA-L 0.000 description 1
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Abstract
The invention discloses a photocatalytic disinfection reactor used for disinfecting reclaimed water and rainwater, a photocatalysis material and a preparation method thereof, an application and an application method thereof. The photocatalytic disinfection reactor comprises a sterilizer case and a disinfection reaction zone. An inlet pipe and an outlet pipe are arranged on the sterilizer case, the sterilizer case comprises a quartz cannula and a stainless steel outer sleeve; the disinfection reaction zone is an annular space formed by between the quartz cannula and the stainless steel outer sleeve, the vertical separator plates are arranged in a disinfection reaction zone every 120mm, the active carbon fiber (ACF) is fixed in the vertical separator plate for loading the nano TiO2 photocatalysis material; a heat suction/radiation fan is arranged at one end of the quartz cannula, and an ultraviolet lamp is arranged in the quartz cannula. On one hand, bacteria in reclaimed water and rainwater can be effectively inactivated, on the other hand, the operation and management of the reactor are convenient, the reactor is safe and reliable, impact and load by a certain water volume can be adapted, in addition, the disinfection reactor has removal effect to an organic matter in water, and safety risk of organism due to bacteria in reclaimed water and rainwater can be avoided.
Description
Technical field
The invention belongs to municipal sewage treatment sterilization field, specifically, relate to a kind of photocatalysis disinfection reactor for reuse water and rainwater sterilization and photocatalyst material and preparation method, application and methods for using them.
Background technology
Urban sewage reutilization and rainwater utilization are the effective ways that alleviates water pollution, improves the ecological environment, solves Urban Water Shortage Problem of Cities, have the very large potentiality of utilizing, and are the Strategics that solves water scarcity problem.Reuse water and rainwater utilization are one of focal issues of current public attention to the possible health risk of human body, especially the microbiological hazards problem in reclaimed wastewater reuse process.The pathogenic micro-organism that HUMAN HEALTH is worked the mischief is divided into bacterium substantially, several classes such as bacterial parasite (parasite and protozoon) and virus.Pathogenic micro-organism can cause great harm to population health, therefore, is necessary very much to take effective disinfectant measure to guarantee the biological safety of reuse water.Reuse water and rainwater are mainly used in the purposes such as miscellaneous water, water for scenic environment use, in the standards such as China's < < urban sewage reutilization city miscellaneous water water quality > > (GB/T 18920-2002), < < urban sewage reutilization water for scenic environment use water quality > > (GB/T 18921-2002), have all proposed Bacteriological Indexes requirement.Current main by chlorination, but the reuse water and the rainwater utilization facility that disperse are conventionally less, adopt liquid chlorine disinfection to need liquid chlorine storage tank, there is certain security risk, and due to some reuse waters and the intermittent operation of rainwater treatment facility, water yield fluctuation is large, and chlorination operational administrative is had relatively high expectations.Therefore, study a kind of efficiently, easy to operate, safe and reliable reuse water and rainwater disinfection apparatus are worth for promoting Reclaimed Municipal Wastewater and rainwater utilization to have important practical.
The novel drinking water disinfection technology that the advanced oxidation of take is core receives much concern, wherein UV/TiO
2photocatalysis disinfection technology is one of focus of water treatment field research.UV/TiO
2the features such as that photochemical catalytic oxidation sterilization has is nontoxic, broad spectrum sterilization are a kind of promising alternative chlorine disinfectant technique.UV/TiO
2photocatalysis disinfection mechanism is that first the strong oxidizing property hydroxyl radical free radical (OH) of its generation destroys bacteria cell wall, then causes the Oxidative demage of cytolemma and born of the same parents' intracellular metabolite material and genetic material, finally causes necrocytosis and reaches sterilization object.In water treatment applications, for fear of powder titanium dioxide, be difficult to the problem that reclaims, mostly by titanium dichloride load on different carriers to realize immobilization.Adopting porous sorptive material is an important directions of current research as the carrier of titanium dioxide, as zeolite, gac, activated carbon fiber etc., can be concentrated to the lower target contaminant of body phase strength of solution around titanium dioxide, reaches the object that improves light-catalyzed reaction efficiency.
Activated carbon fiber has abundant micropore and high specific surface area, and its loading capacity is far above other porous adsorbing materials, as zeolite, silica gel etc.; Loading capacity might as well than its like product gac.Because its form is generally felted or cloth shape, in practical application, than granular carbon, be more convenient to the design application of reactor.
Domestic and international UV/TiO
2photocatalysis disinfection technical study is still in the starting stage, domesticly with regard to activated carbon fiber (ACF) carried titanium dioxide aspect, carried out correlative study at present.For example, Chinese Patent Application No.: 200510035311.2, the applying date: on November 30th, 2005, this disclosure of the invention a kind of activated carbon fiber containing nano titanium dioxide particles and its production and use.This invention relates to a kind of activated carbon fiber containing nano titanium dioxide particles and its production and use.This activated carbon fiber is to be formed by nano titanium dioxide particles in activated carbon fiber material load, and wherein nano titanium dioxide particles accounts for 5 ﹣ 25% of total mass.This invention adopts sol-gel method, first by TiO
2presoma organic titanic compound through hydrolysis, generate TiO
2colloidal sol, and be deposited in activated carbon fiber, drying sol becomes gel, then is converted into nano-TiO through thermal treatment
2particulate is compounded in the surface of activated carbon fiber, makes the activated carbon fiber containing nano titanium dioxide particles.It had both kept the porousness of activated carbon fiber, had strengthened again titanium dioxide fine particles photocatalytic activity, can be used for the removal of low concentration gaseous volatile organic contaminant, was particularly useful for the Adsorption and decomposition of gaseous state volatile organic contaminant in little space.It can reach 500mg/g to the loading capacity of gaseous state volatile organic contaminant, to the photocatalysis Decomposition rate of light-concentration volatile organic pollutant, can reach 36%.But this invention is just for gaseous state light-concentration volatile organic pollutant removal in air, and the effect of processing reuse water and rainwater is not remarkable.
With regard to current existing achievement in research, mainly concentrate on activated carbon fiber (ACF) carried titanium dioxide method research and be applied to gas and water in organic matter removal.Aspect Water Disinfection, appeared in the newspapers and only limited to other support materials load TiO
2pass through UV/TiO
2method is carried out deactivation to the specific bacteria of artificial culture; For example, Chinese Patent Application No.: 201010017224.5, the applying date: on 01 05th, 2010.This Invention Announce a kind of ultraviolet/titanium dioxide (UV/TiO 2) reactor for disinfecting drinking water treated by activated carbon.The object of this invention is the Biosafety problem for bacterium in gac water outlet especially charcoal bacterium, proposes the ultraviolet titanium dioxide disinfecting reactor of charcoal bacterium in a kind of effluent water of drinking water activated carbon process.This reactor is to draw UV sterilization advantage and TiO
2on the basis of catalysis characteristics, by the integrated decontamination reactor assembly of process optimization and integrated formation.UV/TiO
2(ultraviolet ray/titanium dioxide) disinfecting reactor is the charcoal bacterium in the water outlet of deactivation gac effectively, and it is processed effluent quality and reaches drinking water sanitary standard (GB5749-2006) requirement; And the water supply load that can bear to a certain degree changes.But this invention just rests on theory stage, do not apply in actual applications so far.And the sheet glass support materials in this invention does not have absorption property, and surface-area is large not, load TiO
2measure limitedly, it is not very desirable processing microbe species and more reuse water and the effect of rainwater.
Photocatalysis disinfection application for the reuse water in practical application and rainwater, is not reported both at home and abroad.And adopt absorption property better, the UV/TiO of the ACF carried titanium dioxide that surface-area is larger
2photocatalysis disinfection reactor does not have report.So can solve UV/TiO in the urgent need to a kind of now
2photocatalysis disinfection reactor is processed the scheme of reuse water and rainwater more ideally.
Summary of the invention
The problem that 1, will solve
For prior art, lack efficiently, the problem of easy to operate, safe and reliable reuse water and rainwater disinfection apparatus, the invention provides a kind of photocatalysis disinfection reactor for reuse water and rainwater sterilization and photocatalyst material and preparation method, application and methods for using them, it is for the UV/TiO of reuse water and rainwater sterilization
2photocatalysis disinfection reactor is at sterilize in conjunction with UV advantage and TiO
2on the basis of photocatalysis characteristic, the ACF of take prepares loading nano-titania material as carrier, by the integrated decontamination reactor assembly of process optimization and integrated formation, it is the effective bacterium in deactivation reuse water and rainwater not only, and effectively bear water yield impact load to a certain degree, convenient operation and management, safe and reliable.
2, technical scheme
For addressing the above problem, technical scheme provided by the invention is as follows.
A kind of UV/TiO for reuse water and rainwater sterilization
2photocatalysis disinfection reactor, comprises sterilizer housing, disinfection reactions district, and described sterilizer housing is provided with water inlet pipe and rising pipe; Described sterilizer housing comprises quartz socket tube and stainless steel outer sleeve cylinder; Described quartz socket tube is arranged in stainless steel outer sleeve cylinder; Described disinfection reactions district is by formed annular space between quartz socket tube and stainless steel outer sleeve cylinder; The spacing of described quartz socket tube and stainless steel outer sleeve cylinder is 60-120mm; Described disinfection reactions district arranges vertical clapboard every 120mm, is fixed with activated carbon fiber (ACF) loaded with nano TiO in vertical clapboard
2photocatalyst material; Described quartz socket tube two ends are provided with opening, and one end is provided with suction fan; In described quartz socket tube, be provided with ultraviolet lamp.
Preferably, described ultraviolet lamp adopts predominant wavelength 253.7nm germicidal lamp, and power is between 18-40w, and in sterilizating area, average UV light intensity is made as 0.25-0.53mw/cm
2; Sterilizer shell length is greater than ultraviolet lamp length, and length is 1200mm, and 50mm interface is stayed in both sides.
Preferably, described stainless steel outer sleeve cylinder is stainless steel, diameter 200～300mm.
Preferably, bonding with glass cement in rising pipe one side between described stainless steel outer sleeve cylinder and quartz socket tube, and fix and seal by outside collar; After adding sealing-ring, water inlet pipe one side connects by flange.
A photocatalyst material preparation method, the steps include:
A prepares C
l6h
36o
4ti, C
6h
l5nO
3, C
2h
5oH, H
2o, mole proportioning of raw material is C
l6h
36o
4ti:C
6h
l5nO
3: C
2h
5oH:H
2o=1:0.86:26.6:1.5;
B immerses annular active carbon fiber felt in described colloidal sol and soaks 10min; After described annular active carbon fiber felt is slowly lifted out from colloidal sol, then to put it into temperature be the dry 2h of thermostatic drying chamber of 105 ℃;
C by the annular active carbon fiber felt repeating step B obtaining in step B once;
D is placed in retort furnace by the annular active carbon fiber felt obtaining in step C, is warming up to 550 ℃ and keeps, after 2h, after naturally cooling, taking out under nitrogen protection; Obtain UV/TiO
2photocatalyst material; Wherein temperature rise rate is 50 ℃/min, and nitrogen flow is 25mL/min.
The middle colloidal sol of described step (A) is prepared concrete steps and is: get 678mL dehydrated alcohol and be placed in 1000mL beaker, adds 170mL tetrabutyl titanate, then add 30mL trolamine under slowly stirring in dehydrated alcohol, make presoma; Separately get 100mL dehydrated alcohol, add the concentrated hydrochloric acid of 10mL water and 6mL, this solution is slowly added in above-mentioned presoma under violent stirring, add and continue to stir 30min, obtain faint yellow TiO
2colloidal sol.
ACF load UV/TiO prepared by above-mentioned a kind of photocatalyst material preparation method
2photocatalyst material.
Above-mentioned ACF load UV/TiO
2the application of photocatalyst material in reuse water and rainwater sterilization.
Above-mentioned ACF load UV/TiO
2the application method of photocatalyst material in reuse water and rainwater sterilization, is used under the ultraviolet ray that is 253.7nm at wavelength.
3, beneficial effect
Than prior art, beneficial effect of the present invention is:
(1) reactor of the present invention comprises sterilizer housing, disinfection reactions district, and sterilizer housing is provided with water inlet pipe and rising pipe; Sterilizer housing comprises quartz socket tube and stainless steel outer sleeve cylinder; Quartz socket tube is arranged in stainless steel outer sleeve cylinder; Disinfection reactions district is by formed annular space between quartz socket tube and stainless steel outer sleeve cylinder; The spacing of quartz socket tube and stainless steel outer sleeve cylinder is 60-120mm; Disinfection reactions district arranges vertical clapboard at interval of 120mm, is fixed with the nano-TiO of ACF load in vertical clapboard
2photocatalyst material forms UV/TiO under UV effect
2photocatalysis disinfection, activated carbon fiber is to Adsorption of Organic effect and UV/TiO simultaneously
2coupling to organic matter degradation effect, can remove organism in water; Quartz socket tube two ends are provided with opening, and one end is provided with suction fan, are provided with ultraviolet lamp in quartz socket tube; Because the migration circle of the OH producing in photocatalyst surface is limited, the photocatalysis of disinfection reactions district mainly concentrates on UV/TiO
2on photocatalyst material surface, the generation of OH and main sterilization process concentrate on TiO
2in the distance range of 0～50mm of material surface, porous activated carbon fiber has very large superiority as carrier, and current are flowed through and more easily contacted with the OH of photochemical catalysis generation in the process of activated carbon fiber space and produce desirable photocatalysis disinfection effect; UV/TiO in photocatalysis disinfection reactor
2photocatalyst material arranges perpendicular to water (flow) direction, and current evenly pass through by the space of activated carbon fiber, have increased bacterium and TiO in water outlet
2the collision of catalytic material and and TiO
2the contact probability of the hydroxyl radical free radical (OH) that surface forms, thus strengthened the sterilising effect of OH; In addition, current adopt the mode of plug-flow by sterilizating area, have avoided back-mixing to cause disinfection efficiency to decline;
(2) the present invention has well met distributing reuse water and rainwater utilization engineering sterilization demand, aspect reuse water and rainwater sterilization, the present invention has some superiority than traditional chlorine disinfectant, the cylindrical structural of reactor and contact disinfection way allow it to be arranged on easily in outlet conduit, and flexibly serial or parallel connection reactor with variation and the water quality requirement of the reply different treatment water yield, embodied compared with strong adaptability and practicality, obtain desirable sterilisation effect simultaneously to water in organism there is removal effect, to a certain degree improved reuse water and Rainwater Quality;
(3) ultraviolet lamp of the present invention adopts predominant wavelength 253.7nm germicidal lamp, and power is between 18-40w, and in sterilizating area, average UV light intensity is made as 0.25-0.53mw/cm
2; Sterilizer shell length is greater than ultraviolet lamp length, the about 1200mm of length, and 50mm interface is stayed in both sides; In sterilizating area, average UV light intensity is too little can reduce disinfection effect, and light intensity too conference causes energy dissipation and further raising disinfection efficiency contributed little;
(4) stainless steel outer sleeve cylinder of the present invention is stainless steel, diameter 200～300mm; In the situation that guarantee that the mechanical mechanics property of material requires, select stainless steel, can effectively reduce costs, and can avoid UV-light to leak the staff on side is caused to actual bodily harm;
(5) bonding by glass cement by rising pipe one side between stainless steel outer sleeve cylinder of the present invention and quartz socket tube, and fix and seal by outside collar, after adding sealing-ring, water inlet pipe one side connects by flange; The cylindrical structural of reactor and contact disinfection way allow it to be arranged on easily in outlet conduit; And flexibly serial or parallel connection reactor with variation and the water quality requirement of the reply different treatment water yield, embodied compared with strong adaptability and practicality, the design of the concentric locking collar cylindrical shell of stainless steel outer sleeve cylinder and quartz socket tube has not only farthest improved the space availability ratio of photo catalysis reactor, and being connected of convenient and front and back segment process; In addition, cylindrical-concentric sleeve body structure made pool streamflow regime steady, thereby avoided producing slough and air-teturning mixed phenomenon affects disinfection efficiency, and hydraulics is superior;
(6) UV/TiO that a kind of photocatalyst material preparation method of the present invention obtains
2photocatalyst material has excellent absorption property, the organism in can planar water, loaded with nano TiO on gac
2the OH that catalysis produces under UV irradiates is to can be by organic matter degradation, and both coupling effects can be removed the organism in water, when realizing sterilization, organism in water are had to certain removal effect;
(7) ACF load UV/TiO of the present invention
2during the application of photocatalyst material in the sterilization of reuse water and rainwater, under the ultraviolet ray that wavelength is 253.7nm, use, best results, bacterium disinfection efficiency reaches more than 99%, and intestinal bacteria disinfection efficiency is nearly 100%, guarantees the biological safety of water outlet.
Accompanying drawing explanation
Fig. 1 is activated carbon fiber-loaded UV/TiO of the present invention
2photo catalysis reactor structure iron;
Fig. 2 is UV/TiO of the present invention
2the catalytic material composition that hardens;
Fig. 3 is UV/TiO of the present invention
2the inside and outside sleeve structure iron of reactor.
In figure: 1, water inlet pipe; 2, water distributing area; 3, activated carbon fiber (ACF) loaded with nano TiO
2photocatalyst material; 4, ultraviolet lamp; 5, rising pipe; 6, quartz socket tube; 7, suction fan; 8, stainless steel outer sleeve cylinder.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention.
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, a kind of UV/TiO for reuse water and rainwater sterilization
2photocatalysis disinfection reactor, comprises sterilizer housing, disinfection reactions district, and sterilizer housing is provided with water inlet pipe 1 and rising pipe 5; Sterilizer housing comprises quartz socket tube 6 and stainless steel outer sleeve cylinder 8; Quartz socket tube 6 is arranged in stainless steel outer sleeve cylinder 8; Disinfection reactions district is by formed annular space between quartz socket tube 6 and stainless steel outer sleeve cylinder 8; The spacing of quartz socket tube 6 and stainless steel outer sleeve cylinder 8 is 90mm; Two row vertical clapboards are arranged every 120mm in disinfection reactions interval, are fixed with activated carbon fiber (ACF) loaded with nano TiO in two row vertical clapboards
2photocatalyst material 3; Quartz socket tube 6 two ends are provided with opening, and one end is provided with suction fan 7; In quartz socket tube 6, be provided with ultraviolet lamp 4.Ultraviolet lamp 4 adopts predominant wavelength 253.7nm germicidal lamp, and power is 30w, and in sterilizating area, average UV light intensity is 0.39mw/cm
2; Sterilizer shell length is 1200mm, and 50mm interface is stayed in both sides.Stainless steel outer sleeve cylinder 8 is stainless steel, diameter 250mm.Bonding with glass cement by rising pipe 5 one sides between stainless steel outer sleeve cylinder 8 and quartz socket tube 6, and fix and seal by outside collar, water inlet pipe 1 one sides add rubber ring rear flange and connect.
The loaded with nano TiO using in aforesaid device
2the preparation method of photocatalyst material ACF, the steps include:
A prepares viscose-based active carbon fiber (Nantong Sen Youtan fiber company limited, its specific surface area 1500m
2g
-1, pore volume 0.752mLg
-1, tetrabutyl titanate), tetrabutyl titanate (C
l6h
36o
4ti AR, Shanghai Ling Feng chemical reagent factory), trolamine (C
6h
l5nO
3aR, traditional Chinese medicines group chemical reagent), dehydrated alcohol (C
2h
5oH AR, Nanjing chemical reagent factory), H
2o, mole proportioning of raw material is C
l6h
36o
4ti:C
6h
l5nO
3: C
2h
5oH:H
2o=1:0.86:26.6:1.5, mix and blend is made into colloidal sol; The concrete grammar that wherein prepared by colloidal sol is: get 678mL dehydrated alcohol and be placed in 1000mL beaker, add 170mL tetrabutyl titanate, then add 30mL hydrolysis inhibitor trolamine under slowly stirring, make presoma;
Get 100mL dehydrated alcohol, add 10mL water, stir, then add the concentrated hydrochloric acid of 6mL.This solution is moved into drop-burette slowly to be joined in the middle of above-mentioned presoma under violent stirring; Add and continue to stir 30min, obtain faint yellow colloidal sol, standby after colloidal sol ageing 24h, obtain TiO
2colloidal sol;
B carries out water, ethanol ultrasonic cleaning by the annular activated carbon fiber of sizing, and removes ash and organism; Felt is immersed and in colloidal sol, soaks 10min; After annular active carbon fiber felt is slowly lifted out from colloidal sol, then to put it into temperature be the dry 2h of thermostatic drying chamber of 105 ℃;
C by the annular active carbon fiber felt repeating step B obtaining in step B once;
D is placed in retort furnace by the annular active carbon fiber felt obtaining in step C, is warming up to 550 ℃ and keeps, after 2h, after naturally cooling, taking out under nitrogen protection; Obtain UV/TiO
2photocatalyst material; Wherein temperature rise rate is 50 ℃/min, and nitrogen flow is 25mL/min.
In the present embodiment, undressed reuse water and rainwater evenly enter disinfection reactions district from water inlet pipe 1, in plug-flow mode in turn through the activated carbon fiber in water distributing area 2 (ACF) loaded with nano TiO
2photocatalyst material 3.Current are loaded with nano TiO in the ultraviolet lamp 4 of ultraviolet region irradiates Xia He disinfection reactions district
2under the catalytic association effect of the ACF of photocatalyst material 3, sterilize, the reuse water after sterilization and rainwater are discharged through rising pipe 5, and suction fan 7 turns round to reduce the heat that ultra violet lamp produces all the time.
Use loaded with nano TiO
2the ACF of photocatalyst material 3 carries out five batches of tests altogether to reuse water and rainwater, and experimental result is:
Note: "--" represents not detect
UV/TiO
2free total plate count in the water outlet of photocatalysis disinfection reactor actual motion is far below existing < < urban sewage reutilization city miscellaneous water water quality > > (GB/T 18920-2002), in < < urban sewage reutilization water for scenic environment use water quality > > (GB/T 18921-2002), Bacteriological Indexes requirement has been proposed, bacterium disinfection efficiency reaches more than 99%, intestinal bacteria disinfection efficiency nearly 100%, guarantee the biological safety of water outlet.
Embodiment 2
With embodiment 1, difference is that the spacing of quartz socket tube 6 and stainless steel outer sleeve cylinder 8 is 65mm; Ultraviolet lamp 4 power are 18w, and in sterilizating area, average UV light intensity is 0.35mw/cm
2; Stainless steel outer sleeve cylinder 8 diameter 200mm.
Embodiment 3
With embodiment 1, difference is that the spacing of quartz socket tube 6 and stainless steel outer sleeve cylinder 8 is 115mm; Ultraviolet lamp 4 power are 40w, and in sterilizating area, average UV light intensity is made as 0.53mw/cm
2; Stainless steel outer sleeve cylinder 8 diameter 300mm.
Claims (9)
1. the UV/TiO for the sterilization of reuse water and rainwater
2photocatalysis disinfection reactor, comprises sterilizer housing, and disinfection reactions district, is characterized in that: described sterilizer housing is provided with water inlet pipe (1) and rising pipe (5); Described sterilizer housing comprises quartz socket tube (6) and stainless steel outer sleeve cylinder (8); Described quartz socket tube (6) is arranged in stainless steel outer sleeve cylinder (8); Described disinfection reactions district is by formed annular space between quartz socket tube (6) and stainless steel outer sleeve cylinder (8); The spacing of described quartz socket tube (6) and stainless steel outer sleeve cylinder (8) is 60-120mm; Described disinfection reactions district arranges vertical clapboard every 120mm, is fixed with activated carbon fiber (ACF) loaded with nano TiO in vertical clapboard
2photocatalyst material (3); Described quartz socket tube (6) two ends are provided with opening, and one end is provided with suction fan (7); In described quartz socket tube (6), be provided with ultraviolet lamp (4).
2. a kind of UV/TiO for the sterilization of reuse water and rainwater according to claim 1
2photocatalysis disinfection reactor, is characterized in that: described ultraviolet lamp (4) adopts predominant wavelength 253.7nm germicidal lamp, and power is between 18-40w, and in sterilizating area, average UV light intensity is 0.25-0.53mw/cm
2; Sterilizer shell length is greater than ultraviolet lamp (4) length, and length is 1200mm, and 50mm interface is stayed in both sides.
3. a kind of UV/TiO for the sterilization of reuse water and rainwater according to claim 1
2photocatalysis disinfection reactor, is characterized in that: described stainless steel outer sleeve cylinder (8) is stainless steel, diameter 200～300mm.
4. a kind of UV/TiO for the sterilization of reuse water and rainwater according to claim 1
2photocatalysis disinfection reactor, is characterized in that: bonding with glass cement in rising pipe (5) one sides between described stainless steel outer sleeve cylinder (8) and quartz socket tube (6), and fix and seal by outside collar; After adding sealing-ring, water inlet pipe (1) one side connects by flange.
5. a photocatalyst material preparation method, the steps include:
A prepares C
l6h
36o
4ti, C
6h
l5nO
3, C
2h
5oH, H
2o, mole proportioning of raw material is C
l6h
36o
4ti:C
6h
l5nO
3: C
2h
5oH:H
2o=1:0.86:26.6:1.5;
B immerses annular active carbon fiber felt in described colloidal sol and soaks 10min; After described annular active carbon fiber felt is slowly slowly lifted out from colloidal sol, then to put it into temperature be the dry 2h of thermostatic drying chamber of 105 ℃;
C by the annular active carbon fiber felt repeating step B obtaining in step B once;
D is placed in retort furnace by the annular active carbon fiber felt obtaining in step C, is warming up to 550 ℃ and keeps, after 2h, after naturally cooling, taking out under nitrogen protection; Obtain ACF load UV/TiO
2photocatalyst material; Wherein temperature rise rate is 50 ℃/min, and nitrogen flow is 25mL/min.
6. a kind of photocatalyst material preparation method according to claim 1, it is characterized in that: the middle colloidal sol of described step (A) is prepared concrete steps and is: get 678mL dehydrated alcohol and be placed in 1000mL beaker, under slowly stirring, in dehydrated alcohol, add 170mL tetrabutyl titanate, add again 30mL trolamine, make presoma; Separately get 100mL dehydrated alcohol, add the concentrated hydrochloric acid of 10mL water and 6mL, this solution is slowly added in above-mentioned presoma under violent stirring, add and continue to stir 30min, obtain faint yellow TiO
2colloidal sol.
7. the ACF load UV/TiO that in claim 5 prepared by a kind of photocatalyst material preparation method
2photocatalyst material.
8.ACF load UV/TiO
2the application of photocatalyst material in reuse water and rainwater sterilization.
9. the ACF load UV/TiO of claim 7
2the application method of photocatalyst material in reuse water and rainwater sterilization, is characterized in that, under the ultraviolet ray that is 253.7nm, uses at wavelength.
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Application publication date: 20141119 |