CN108675384A - The prevention bacterium algae coating of natural light response cycle water cooling tower - Google Patents
The prevention bacterium algae coating of natural light response cycle water cooling tower Download PDFInfo
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- CN108675384A CN108675384A CN201810480672.5A CN201810480672A CN108675384A CN 108675384 A CN108675384 A CN 108675384A CN 201810480672 A CN201810480672 A CN 201810480672A CN 108675384 A CN108675384 A CN 108675384A
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- Prior art keywords
- cooling tower
- natural light
- water
- bacterium algae
- coating
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 241000195493 Cryptophyta Species 0.000 title claims abstract description 47
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 241000894006 Bacteria Species 0.000 title claims abstract description 24
- 230000004298 light response Effects 0.000 title claims abstract description 17
- 230000002265 prevention Effects 0.000 title claims abstract description 12
- 239000011248 coating agent Substances 0.000 title claims description 34
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 239000011941 photocatalyst Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 3
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 15
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 8
- 238000000889 atomisation Methods 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003760 magnetic stirring Methods 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000003643 water by type Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 2
- DKUYEPUUXLQPPX-UHFFFAOYSA-N dibismuth;molybdenum;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mo].[Mo].[Bi+3].[Bi+3] DKUYEPUUXLQPPX-UHFFFAOYSA-N 0.000 claims description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 2
- -1 pucherite Chemical compound 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 239000000498 cooling water Substances 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 29
- 239000010935 stainless steel Substances 0.000 description 29
- 239000000243 solution Substances 0.000 description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 241000588724 Escherichia coli Species 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000007146 photocatalysis Methods 0.000 description 11
- 230000001699 photocatalysis Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 206010061217 Infestation Diseases 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000011081 inoculation Methods 0.000 description 6
- 238000000386 microscopy Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000001954 sterilising effect Effects 0.000 description 6
- 238000004659 sterilization and disinfection Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 241000345998 Calamus manan Species 0.000 description 1
- 241000195628 Chlorophyta Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000003619 algicide Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 230000001408 fungistatic effect Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 235000012950 rattan cane Nutrition 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/20—Prevention of biofouling
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention discloses a kind of prevention bacterium algae coatings of natural light response cycle water cooling tower, including are sprayed on the photocatalyst layer on cooling tower surface, and the component of the photocatalyst layer is as follows：Based on mass fraction：Photochemical catalyst 1~20%, surplus are deionized water.By the surface spraying photocatalyst layer in cooling tower, under natural light irradiation, photocatalyst layer with it is visible light-responded, it can be achieved efficiently to prevent bacterium algae for a long time, reduce the use of recirculated cooling water medicament, it is water-saving, there is no secondary pollution simultaneously, improves the utilization rate of recirculated water.
Description
Technical field
The present invention relates to Treatment of Industrial Water technical fields, and in particular to a kind of prevention of natural light response cycle water cooling tower
Bacterium algae coating.
Background technology
It is easy to grow algae on the cement structures such as cooling tower windbreak of recirculating cooling water system, to circulation
Normal operation is a big obstacle.Because algae and its remains, which are trapped in, can cause the stifled of cooling water system in cooling tower and heat exchanger
Plug, influences heat-transfer effect and causes underdeposit corrosion.The growth of circulating water cooling tower portion temperature optimum bacterium algae, is asked to solve this
Topic.East China petro-chemical corporation oil plant is ground with reference to the coating of some concrete structures and the formula of inorganic zinc coating
Made fungi-proofing algicide coatings used for cooling tower, sterilization mechanism rely primarily on the exudation copper of poison (biocide) ingredient in coating from
Son plays the role of fungicide.Inevitably, copper ion can also be brought into water, secondary pollution and the zero-emission advocated instantly
It is not consistent, while there is also corrosion risks.
Catalysis material be one kind under the action of light, the catalyst of non-selectivity decomposing organic matter.Itself will not send out
Raw loss, can be used for a long time, and non-secondary pollution.From 1972, since the clear professor in Japanese rattan island has found, in environment and
Many breakthroughs are obtained in terms of the energy.The practical application of the material at present, include mainly air purification, water body purification, antibacterial, from clear
It is clean, antifouling antifog.Its mechanism of action, be under the driving of light, as semi-conducting material photochemical catalyst generate light induced electron and
Photohole generates hydroxyl radical free radical and superoxide radical with the water and oxygen of material surface, is aoxidized to organic matter non-selectivity
Reduction, to which mineralising organic matter becomes carbon dioxide and water.It is inspired by this, this article the author thinks during being engaged in circulating water treatment
It arrives, the processing of bacterium algae is carried out with this material.That is mentioned in patent CN201710018123.1 can be used for the antibiotic paint of cooling tower,
Creative adds anatase titanium dioxide, achieves preferable achievement.The photochemical catalyst only used in the patent is purple
Outer photoinduction, selection and the design of light source can be with a large amount of inconvenience.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of preventions of natural light response cycle water cooling tower
Bacterium algae coating efficiently solves the problems, such as that recirculated water summer bacterium algae is grown serious, and effect is lasting.
To achieve the goals above, the present invention uses following technical scheme：A kind of natural light response cycle water cooling tower
Bacterium algae coating is prevented, including is sprayed on the photocatalyst layer on cooling tower surface, the component of the photocatalyst layer is as follows：With matter
Measure score meter：Photochemical catalyst 1~20%, surplus are deionized water.
Further, the photochemical catalyst is bismuth oxide, pucherite, bismuth molybdate, bismuth tungstate, g-C3N4, modified Nano two
It is one or more in titanium oxide.
Further, the preparation method of the modified nano-titanium dioxide is：
S1：3~4g butyl titanates are weighed, are added in 20~40mL absolute ethyl alcohols, 20~30min of stirring is uniformly mixed,
1.0~2.0mL acetic acid is added, continues to stir, obtains solution A；
S2：0.15g~0.6g urea separately is weighed, dissolves in 1.0mL deionized waters, obtains solution B；
S3：Under magnetic stirring, solution B is slowly dropped in solution A, continues 20~30min of stirring, be uniformly mixed,
Above-mentioned mixed solution is poured into ptfe autoclave, 8~12h, the product washing and drying that will be obtained are reacted at 150 DEG C
It is positioned in the alumina crucible of capping, then puts into Muffle furnace afterwards, with the heating rate of 2 DEG C/min by the temperature of Muffle furnace
400 DEG C are risen to, 3H is kept the temperature, Muffle furnace is waited for be down to room temperature naturally, take out roasting sample and is ground to get N doping is arrived
Modified nano-titanium dioxide powder.The molar ratio of nitrogen and titanium is 0.5~2.0 in modified titanium dioxide powder made from this method, is changed
Property titanium dioxide powder spraying after visible light-responded best results.
Further, the spraying method of the photochemical catalyst sprays for electrostatic atomization, and transverse and longitudinal direction, which intersects uniformly spray, plants
In cooling tower substrate surface, air drying.
Further, the photocatalyst amount is 20~200mL/m2, and coating is at film hardness >=5H.
Compared with prior art, what the present invention was brought has the beneficial effect that：
1) pass through the surface spraying photocatalyst layer in cooling tower, under natural light irradiation, photocatalyst layer and visible light
Response reduces the use of recirculated cooling water medicament, it can be achieved that the efficient prevention bacterium algae of long-time, water-saving, while without secondary dirt
Dye, improves the utilization rate of recirculated water.
2) modified nano-titanium dioxide is nitrogen-doped nanometer titanium dioxide, be using urea is nitrogen source, butyl titanate for titanium
Source is combined to obtain by solvent method and high-temperature roasting method, modified nano-titanium dioxide overcome it is traditional can only with it is ultraviolet
The shortcomings that line responds, can with it is visible light-responded, realize efficient prevention bacterium algae, and environment friendly and pollution-free.
Specific implementation mode
The present invention is further detailed With reference to embodiment.
Embodiment 1
1) 1m × 1m stainless steel plates are chosen and simulates cooling tower, and plate surface is cleaned up, dried spare；
2) 1%g-C is taken3N4, 99% go from water, after mixing by the two, be packed into batch can；
3) electrostatic atomization spraying equipment, the sequence of construction erected after use is first up and then down, first left and then right, first horizontal, by light are debugged
Catalyst g-C3N4It sprays on stainless steel, dosage 20mL,；
Etc. 4) after natural drying to be coated, it is 5H to test it into film hardness；
5) take Taihu Lake raw water as water sample, it is about 2.0 × 10 to test its total amount containing algae by microscopy5A/mL, in water body
Middle inoculation Escherichia coli 1.0 × 106CFU/mL, the stainless steel plate for having loaded photocatalysis coating is tilting in reaction tank (1020mm
× 1020mm × 200mm) in, connect water inlet line, outlet conduit, circulating pump, buffer pool.It can be ensured by using multi-pipeline
Water body circulation covering whole face stainless steel plate.Reaction tank is placed on sunlit place, by observing algae infestation situation, inspection
The quantity and water body COD for surveying Escherichia coli in water body, determine the efficiency of photocatalysis coating in the embodiment.
Experiment shows operation 12H, and it is 10 to measure bacteria containing amount in water body3~104There is not algae on stainless steel plate in CFU/mL
The case where class is grown, COD in water body are stablized in 10mg/L, illustrate that the anti-bacterium algae coating of natural light response cycle water cooling tower has
Excellent sterilization algae removal function.
Embodiment 2
1) 1m × 1m stainless steel plates are chosen and simulates cooling tower, and plate surface is cleaned up, dried spare；
2) it takes 20% modified nano-titanium dioxide, 80% to go from water, after mixing by the two, is packed into batch can, modification is received
Rice titanium dioxide preparation method be：S1：3.4g butyl titanates are weighed, are added in 20mL absolute ethyl alcohols, stirring 20min mixing
Uniformly, 1.0mL acetic acid is added, continues to stir, obtains solution A；
S2：0.15g urea separately is weighed, dissolves in 1.0mL deionized waters, obtains solution B；
S3：Under magnetic stirring, solution B is slowly dropped in solution A, continues to stir 30min, is uniformly mixed, it will be upper
It states mixed solution to pour into ptfe autoclave, reacts 12h at 150 DEG C, will be placed after obtained product washing and drying
It in the alumina crucible of capping, then puts into Muffle furnace, is risen to the temperature of Muffle furnace with the heating rate of 2 DEG C/min
400 DEG C, 3H is kept the temperature, Muffle furnace is waited for be down to room temperature naturally, take out roasting sample and is ground to get to the modification of N doping
Titania powder.
3) electrostatic atomization spraying equipment, the sequence of construction erected after use is first up and then down, first left and then right, first horizontal, by light are debugged
Catalyst modification nano-titanium dioxide sprays on stainless steel, dosage 200mL；
Etc. 4) after natural drying to be coated, it is 6H to test it into film hardness；
5) take Taihu Lake raw water as water sample, it is about 2.0 × 10 to test its total amount containing algae by microscopy5A/mL, in water body
Middle inoculation Escherichia coli 1.0 × 106CFU/mL, the stainless steel plate for having loaded photocatalysis coating is tilting in reaction tank (1020mm
× 1020mm × 200mm) in, connect water inlet line, outlet conduit, circulating pump, buffer pool.It can be ensured by using multi-pipeline
Water body circulation covering whole face stainless steel plate.Reaction tank is placed on sunlit place, by observing algae infestation situation, inspection
The quantity and water body COD for surveying Escherichia coli in water body, determine the efficiency of photocatalysis coating in the embodiment.
Experiment shows operation 12H, and it is 10 to measure bacteria containing amount in water body2~103There is not algae on stainless steel plate in CFU/mL
The case where class is grown, COD in water body are stablized in 8mg/L, illustrate that the anti-bacterium algae coating of natural light response cycle water cooling tower has
Excellent sterilization algae removal function.
Embodiment 3
1) 1m × 1m stainless steel plates are chosen and simulates cooling tower, and plate surface is cleaned up, dried spare；
2) it takes 10% modified nano-titanium dioxide, 90% to go from water, after mixing by the two, is packed into batch can, modification is received
Rice titanium dioxide preparation method be：
S1：3.4g butyl titanates are weighed, are added in 30mL absolute ethyl alcohols, stirring 30min is uniformly mixed, and is added
1.0mL acetic acid continues to stir, obtains solution A；
S2：0.6g urea separately is weighed, dissolves in 1.0mL deionized waters, obtains solution B；
S3：Under magnetic stirring, solution B is slowly dropped in solution A, continues to stir 30min, is uniformly mixed, it will be upper
It states mixed solution to pour into ptfe autoclave, reacts 12h at 150 DEG C, will be placed after obtained product washing and drying
It in the alumina crucible of capping, then puts into Muffle furnace, is risen to the temperature of Muffle furnace with the heating rate of 2 DEG C/min
400 DEG C, 3H is kept the temperature, Muffle furnace is waited for be down to room temperature naturally, take out roasting sample and is ground to get to the modification of N doping
Titania powder.
3) electrostatic atomization spraying equipment, the sequence of construction erected after use is first up and then down, first left and then right, first horizontal, by light are debugged
Catalyst modification nano-titanium dioxide sprays on stainless steel, dosage 200mL；
Etc. 4) after natural drying to be coated, it is 8H to test it into film hardness；
5) take Taihu Lake raw water as water sample, it is about 2.0 × 10 to test its total amount containing algae by microscopy5A/mL, in water body
Middle inoculation Escherichia coli 1.0 × 106CFU/mL, the stainless steel plate for having loaded photocatalysis coating is tilting in reaction tank (1020mm
× 1020mm × 200mm) in, connect water inlet line, outlet conduit, circulating pump, buffer pool.It can be ensured by using multi-pipeline
Water body circulation covering whole face stainless steel plate.Reaction tank is placed on sunlit place, by observing algae infestation situation, inspection
The quantity and water body COD for surveying Escherichia coli in water body, determine the efficiency of photocatalysis coating in the embodiment.
Experiment shows operation 12H, and it is 10 to measure bacteria containing amount in water body3~104There is not algae on stainless steel plate in CFU/mL
The case where class is grown, COD in water body are stablized in 7mg/L, illustrate that the anti-bacterium algae coating of natural light response cycle water cooling tower has
Excellent sterilization algae removal function.
Embodiment 4
1) 1m × 1m stainless steel plates are chosen and simulates cooling tower, and plate surface is cleaned up, dried spare；
2) it takes 15% modified nano-titanium dioxide, 85% to go from water, after mixing by the two, is packed into batch can, modification is received
Rice titanium dioxide preparation method be：
S1：3.4g butyl titanates are weighed, are added in 30mL absolute ethyl alcohols, stirring 30min is uniformly mixed, and is added
1.0mL acetic acid continues to stir, obtains solution A；
S2：0.3g urea separately is weighed, dissolves in 1.0mL deionized waters, obtains solution B；
S3：Under magnetic stirring, solution B is slowly dropped in solution A, continues to stir 30min, is uniformly mixed, it will be upper
It states mixed solution to pour into ptfe autoclave, reacts 12h at 150 DEG C, will be placed after obtained product washing and drying
It in the alumina crucible of capping, then puts into Muffle furnace, is risen to the temperature of Muffle furnace with the heating rate of 2 DEG C/min
400 DEG C, 3H is kept the temperature, Muffle furnace is waited for be down to room temperature naturally, take out roasting sample and is ground to get to the modification of N doping
Titania powder.
3) electrostatic atomization spraying equipment, the sequence of construction erected after use is first up and then down, first left and then right, first horizontal, by light are debugged
Catalyst modification nano-titanium dioxide sprays on stainless steel, dosage 200mL；
Etc. 4) after natural drying to be coated, it is 7H to test it into film hardness；
5) take Taihu Lake raw water as water sample, it is about 2.0 × 10 to test its total amount containing algae by microscopy5A/mL, in water body
Middle inoculation Escherichia coli 1.0 × 106CFU/mL, the stainless steel plate for having loaded photocatalysis coating is tilting in reaction tank (1020mm
× 1020mm × 200mm) in, connect water inlet line, outlet conduit, circulating pump, buffer pool.It can be ensured by using multi-pipeline
Water body circulation covering whole face stainless steel plate.Reaction tank is placed on sunlit place, by observing algae infestation situation, inspection
The quantity and water body COD for surveying Escherichia coli in water body, determine the efficiency of photocatalysis coating in the embodiment.
Experiment shows operation 12H, and it is 10 to measure bacteria containing amount in water body3~104There is not algae on stainless steel plate in CFU/mL
The case where class is grown, COD in water body are stablized in 7mg/L, illustrate that the anti-bacterium algae coating of natural light response cycle water cooling tower has
Excellent sterilization algae removal function.
Embodiment 5
1) 1m × 1m stainless steel plates are chosen and simulates cooling tower, and plate surface is cleaned up, dried spare；
2) it takes 10% pucherite, 90% to go from water, after mixing by the two, is packed into batch can；
3) electrostatic atomization spraying equipment, the sequence of construction erected after use is first up and then down, first left and then right, first horizontal, by light are debugged
Catalyst pucherite sprays on stainless steel, dosage 110mL；
Etc. 4) after natural drying to be coated, it is 7H to test it into film hardness；
5) take Taihu Lake raw water as water sample, it is about 2.0 × 10 to test its total amount containing algae by microscopy5A/mL, in water body
Middle inoculation Escherichia coli 1.0 × 106CFU/mL, the stainless steel plate for having loaded photocatalysis coating is tilting in reaction tank (1020mm
× 1020mm × 200mm) in, connect water inlet line, outlet conduit, circulating pump, buffer pool.It can be ensured by using multi-pipeline
Water body circulation covering whole face stainless steel plate.Reaction tank is placed on sunlit place, by observing algae infestation situation, inspection
The quantity and water body COD for surveying Escherichia coli in water body, determine the efficiency of photocatalysis coating in the embodiment.
Experiment shows operation 12H, and it is 10 to measure bacteria containing amount in water body3~104There is not algae on stainless steel plate in CFU/mL
The case where class is grown, COD in water body are stablized in 9mg/L, illustrate that the anti-bacterium algae coating of natural light response cycle water cooling tower has
Excellent sterilization algae removal function.
Reference examples 1
1) 1m × 1m stainless steel plates are chosen and simulates cooling tower, and plate surface is cleaned up, dried spare；
2) coating prepared using the formula of CN201710018123.1 is sprayed on stainless steel plate；
5) take Taihu Lake raw water as water sample, it is about 2.0 × 10 to test its total amount containing algae by microscopy5A/mL, in water body
Middle inoculation Escherichia coli 1.0 × 106CFU/mL, stainless steel plate is tilting in reaction tank (1020mm × 1020mm × 200mm),
Connect water inlet line, outlet conduit, circulating pump, buffer pool.It can ensure that water body circulation covering whole face is stainless by using multi-pipeline
Steel plate.Reaction tank is placed on sunlit place, by the number for observing Escherichia coli in algae infestation situation, detection water body
Amount and water body COD, determine the efficiency of photocatalysis coating in the embodiment.
Experiment shows operation 12H, and it is 10 to measure bacteria containing amount in water body6~107CFU/mL occurs green algae on stainless steel plate
Class is adhered to, COD in water body 50mg/L, and there are ascendant trends.
It is compared by reference examples 1 and embodiment 1/2/3/4/5 it is found that the fungistatic effect for being coated with the coating of photochemical catalyst is bright
The aobvious coating better than without spraying photochemical catalyst, and photochemical catalyst directly with it is visible light-responded, effective and reasonable utilizes nature money
Source, energy conservation and environmental protection efficiently solve the problems, such as that recirculated water summer bacterium algae is grown serious, and effect is lasting.
The basic principles and main features and the features of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (5)
1. a kind of prevention bacterium algae coating of natural light response cycle water cooling tower, it is characterised in that：Including being sprayed on cooling tower table
The component of the photocatalyst layer in face, the photocatalyst layer is as follows：Based on mass fraction：Photochemical catalyst 1~20%, surplus are
Deionized water.
2. the prevention bacterium algae coating of natural light response cycle water cooling tower according to claim 1, it is characterised in that：It is described
Photochemical catalyst be bismuth oxide, pucherite, bismuth molybdate, bismuth tungstate, g-C3N4, it is one or more in modified nano-titanium dioxide.
3. the prevention bacterium algae coating of natural light response cycle water cooling tower according to claim 2, it is characterised in that：It is described
The preparation method of modified nano-titanium dioxide be：
S1：3.4g butyl titanates are weighed, are added in 30mL absolute ethyl alcohols, stirring 30min is uniformly mixed, and adds 1.0mL second
Acid continues to stir, obtains solution A；
S2：0.15g~0.6g urea separately is weighed, dissolves in 1.0mL deionized waters, obtains solution B；
S3：Under magnetic stirring, solution B is slowly dropped in solution A, continues to stir 30min, is uniformly mixed, it will be above-mentioned mixed
It closes solution to pour into ptfe autoclave, reacts 12h at 150 DEG C, will be positioned over and add after obtained product washing and drying
It in the alumina crucible of lid, then puts into Muffle furnace, the temperature of Muffle furnace is risen to 400 DEG C with the heating rate of 2 DEG C/min,
3H is kept the temperature, Muffle furnace is waited for be down to room temperature naturally, take out roasting sample and is ground to get to the modification titanium dioxide of N doping
Titanium powder.
4. the prevention bacterium algae coating of natural light response cycle water cooling tower according to claim 3, it is characterised in that：It is described
Photochemical catalyst spraying method be electrostatic atomization spraying, transverse and longitudinal direction intersect uniformly spray plant in cooling tower substrate surface, room temperature
It is dry.
5. the prevention bacterium algae coating of natural light response cycle water cooling tower according to claim 1, it is characterised in that：It is described
Photocatalyst amount be 20~200mL/m2, coating is at film hardness >=5H.
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