CN103086469B - Efficient photocatalysis water treatment method and device - Google Patents
Efficient photocatalysis water treatment method and device Download PDFInfo
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- CN103086469B CN103086469B CN201310053472.9A CN201310053472A CN103086469B CN 103086469 B CN103086469 B CN 103086469B CN 201310053472 A CN201310053472 A CN 201310053472A CN 103086469 B CN103086469 B CN 103086469B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 21
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 43
- 239000010865 sewage Substances 0.000 claims abstract description 81
- 239000000919 ceramic Substances 0.000 claims abstract description 53
- 238000005273 aeration Methods 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011941 photocatalyst Substances 0.000 claims abstract description 20
- 239000003814 drug Substances 0.000 claims abstract description 18
- 238000006552 photochemical reaction Methods 0.000 claims abstract description 18
- 239000010453 quartz Substances 0.000 claims abstract description 10
- 241000264877 Hippospongia communis Species 0.000 claims description 47
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 28
- 230000003647 oxidation Effects 0.000 claims description 21
- 238000007254 oxidation reaction Methods 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 18
- 238000006555 catalytic reaction Methods 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 16
- 239000012028 Fenton's reagent Substances 0.000 claims description 14
- 239000004159 Potassium persulphate Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 11
- 239000007800 oxidant agent Substances 0.000 claims description 11
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 11
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- 239000000377 silicon dioxide Substances 0.000 claims description 6
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- 238000012360 testing method Methods 0.000 claims description 5
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- 239000002245 particle Substances 0.000 description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 2
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
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Abstract
The invention provides an efficient photocatalysis water treatment device. The efficient photocatalysis water treatment device comprises a tank body, a quartz tube, a backflow port, an extra-ultraviolet tube, a three-dimensional ceramic honeycomb net photochemical reaction chamber, a sewage distributor, a sewage port, an aeration port, an aeration assembly, a sewage draining port, a medicine distributing assembly, a medicine port, a coarse filtering net, a high-pressure backwashing device, a high-pressure water port, a tail gas recovering port and a reciprocating motion device; three ports are formed at the lower part of the tank body, namely, an organic sewage port, the aeration port and the medicine port; the three-dimensional ceramic honeycomb net photochemical reaction chamber for loading the extra-ultraviolet lamp and a nanometer TiO2 photocatalyst are formed at the upper part of the tank body; and the tail gas recovery port is formed at the upper part of the tank body.
Description
Technical field
The present invention relates to a kind of high efficiency photocatalysis water treatment method and device, especially to treatment process and the device of the organic sewage of high pollution.
Background technology
Along with the acceleration of Economic development and urbanization, the place that industrial and mining enterprises cause and the organic sewage of high pollution are very serious to the pollution of environment.Due to variation and the adjustment of the industrial structure and city layout, the contaminating enterprises such as some chemical industry, metallurgy move one after another, add the bankruptcy of some enterprises, and contaminated site constantly produces.Soil is the important substance basis of human society activity in production, is natural resources indispensable, that be difficult to regeneration.There is no the contaminated site of processing will be Chemical Time Bomb, once the big area outburst will cause impact difficult to the appraisal to national sustainable development, therefore must be paid much attention to soil and to reparation and the improvement of the pollution of underground water.Therefore be necessary properly management and repaired, it is rationally utilized.
Along with the adjustment of Chinese city planning, city layout, the blowdown enterprises such as many chemical plant, pharmaceutical factory, Steel Plant move outside, and have left over a large amount of organic contaminations place.Organic sewage and heavy metal contamination that contaminated soil place after many chemical industry or agricultural chemicals enterprises remove and underground water are high pollution.The place that discarded organic sewage pollutes will be developed does commercialization and civilian, and a large amount of toxic organic compound matter wherein, can have a strong impact on ecotope and HUMAN HEALTH, therefore needs badly the organic contamination place is carried out efficiently, repaired fast.The method of physics reparation is having of open report, comprises washing out method, method of evaporation, electric repairing method, hot repairing method, ventilation decontamination and burning method.If the processing without underground to polluted water, do not complete the control of soil at all.Also lack a kind of method that more satisfactory improvement is polluted in the practice of existing contaminated soil place and underground water repair process.
The treatment process of a CN102101715A organic sewage, the load metallic carbonyls is catalyzer, and metallic carbonyls is one or both combinations in Ru, Co, and support of the catalyst is selected from Al
2o
3, gac, TiO
2, ZrO
2, CeO
2in at least one or their combination; The weight percentage of metal is 0.01～5% (with respect to carrier), wherein the weight percent of precious metal element (with respect to carrier) is 0.05～0.3%, take oxygen-containing gas as oxygenant, organism in oxidative degradation sewage, temperature of reaction is 90～250 ℃, reaction stagnation pressure 1.0～6.0MPa, react 1～3 hour.
The treatment process of CN201110394823 organic sewage, at first enter feeding warehouse by organic sewage, adds the pH value conditioning agent, and pH value is modulated to 6-8; Then adjusted sewage is entered to the graduated response cabin, first add the control stick, then add stopper, carry out preliminary sedimentation, water purification enters reuse pool, and filtrate enters step cracking cabin; Again, filtrate enters steam after entering step cracking cabin, by steam, controls temperature at 100～210 ℃, makes novalgin separate with water purification with sodium acrylate, reclaims novalgin and sodium acrylate, water purification recycling pond, and filter residue enters the raffinate groove; + after pass into CO in the raffinate groove
2, CO
2after replacement(metathesis)reaction, be replaced as Na with NaOH in residue fully
2cO
3, Na
2cO
3reclaimed, last residue press filtration is discharged.The treatment process of organic sewage, treatment scheme is short, and resourcebility is recycled.
CN201110302520 discloses a kind of method of processing organic sewage, and the method is not exclusively to coat iron with organic plastics to be prepared into the cladded type iron, in the organic sewage that to insert the pH value be 3 ~ 7, is processed; Described organic plastics is polyethylene, polypropylene or tetrafluoroethylene, and described iron is Zero-valent Iron.The iron raw material sources that adopt are extensive, cost is low, making processes is simple, stable performance, environmental friendliness, and reaction efficiency is high, reusable, long service life.Treatment process of the present invention can be suited measures to local conditions to be adjusted for different industries Typical Industrial organic pollutant characteristics for the water treatment of various organic contaminations, can overcome the deficiency of various technology in the past, facilitates easy to operate and efficiency is high.
The treatment process of CN200810059241 organic sewage, working load has the organic pollutant in the absorbent charcoal material absorption sewage of metal phthalocyanine, adsorbs after saturated absorbent charcoal material is immersed in the aqueous solution that contains oxygenant; Or direct absorbent charcoal material and the oxygenant that adds load that metal phthalocyanine is arranged in organic sewage, the catalyzed degraded of organic pollutant, absorbent charcoal material is regenerated and can be reused; This treatment process can be applicable to the multiple organic sewage such as the phenols organic sewage, dye wastewater of difficult degradation and processes or middle water reuse; The characteristics such as it is easy that it has method, and cost is low, and the organic sewage treatment effect is good.
The Fenton oxidation technology is to carry out the sewage water treatment method of chemical oxidation with Fenton reagent.Fenton reagent is by H
2o
2and Fe
2+the very strong oxygenant of a kind of oxidation capacity mixed.Its oxidation mechanism is mainly under acidic conditions (general pH<3.5), utilizes Fe
2+as H
2o
2catalyzer, generate and to there is very strong oxidation electrically and the very high OH of reactive behavior, hydroxyl radical free radical generates organic free radical with hardly degraded organic substance and makes it structure deteriorate in the aqueous solution, final oxygenolysis.While Fe
2+be oxidized to Fe
3+produce coagulating sedimentation, large amount of organic is condensed and remove.The Fenton oxidation method can be processed the organic sewage such as nitrobenzene-containing, ABS and effectively for the decolouring of sewage, except stench.Fenton reagent oxidation ability is strong.It is very fast that hydrogen peroxide resolves into the speed of hydroxyl radical free radical, and rate of oxidation is also higher.Hydroxyl radical free radical has very high electronegativity or Electron Affinities.Processing efficiency is higher, does not introduce other impurity in treating processes, can not produce secondary pollution.Owing to being a kind of physical chemistry treatment process, be easy to be controlled, than being easier to meet processing requirements.Fenton oxidation both can be used separately, also can use with other process integrations, to reduce costs, improved treatment effect.If using biological oxidation process as pre-treatment, it removes organic effect will be better.Ability to bear to interfering substance in sewage is stronger, and operation is easier to the maintenance of the equipment ratio, and use range is wider.Fe (OH)
3colloid can be used in low pH value scope, and in low pH value scope, organism exists mainly with molecular state greatly, than being easier to, removes, and this has also improved organic removal efficiency.But the general more difficult organic sewage of processing more high pollution that is directly used in of this technology: the semi-underground pollution sewage on the ground in some heavily contaminated source, be included in necessary sewage to be processed in the rehabilitating soil pollution course, these sewage can't carry out biochemical treatment immediately, the method efficiency of Fenton flocculation is also not high, propose a kind of more efficient treatment process therefore need the semi-underground pollution sewage on the ground in a kind of some heavily contaminated source of proposition to carry out pre-treatment, and propose a kind for the treatment of facility of movement.
Summary of the invention
The present invention seeks to, propose a kind of high efficiency photocatalysis water treatment method and device, especially to treatment process and the device of the organic sewage of high pollution, and propose a kind for the treatment of facility of movement.
The high efficiency photocatalysis waste disposal plant, comprise that tank body 1, silica tube 2, backflow interface 3, superpower ultraviolet lamp tube 4, three-dimensional ceramic honey comb net photochemical reaction chamber (comprise nano-TiO
2three-dimensional ceramic honey comb net 5), cleaning blade 6, sewage water distributor 7, sewage interface 8, aeration interface 9, aeration assembly 10, sewage draining exit 11, cloth medicine assembly 12, medicament interface 13, low efficient filter screen 14, high pressure recoiling device 15, high pressure water interface 17, tail gas recycle mouth 17 and reciprocator 18 etc. partly form; Tank body lower part is provided with three interfaces such as organic sewage interface 8, aeration interface 9 and medicament interface 11; Top is superpower ultraviolet lamp and nano-TiO
2the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photocatalyst.
Further, three assemblies such as organic sewage water distributor 7, cloth medicine assembly 12 and aeration assembly 10, on plane separately, all have the function that flow is even and flow is controlled.
Further, TiO
2the structure of the three-dimensional ceramic honey comb net photochemical reaction chamber of photocatalyst is: three-dimensional ceramic honey comb net has 2 to N floor, nano-TiO
2the even perforate of the three-dimensional ceramic honey comb layer of photocatalyst is vertical, 150～280nm ultraviolet tube of vertical parallel has 1 to N root, N equals 8 to 16, and can be through the hole of the online face of three-dimensional ceramic honey comb, also can adopt the mode of annular ultraviolet lamp tube horizontal positioned, now the online face of three-dimensional ceramic honey comb is without perforate.Every fluorescent tube all is furnished with the signal detection data line, guarantees working properly.
Superpower ultraviolet lamp tube 4 is placed in quartz socket tube 3, the outer fixed in position of quartz socket tube degree of tightness coordinate suitable cleaning blade 6, quartz socket tube is driven and can be moved up and down by reciprocator 18.Be provided with the metal gate graticule mesh of parallel placement, evenly place nano-TiO
2the three-dimensional ceramic honey comb layer of photocatalyst.
Be provided with the high pressure water recoiling device, its water pressure is adjustable between 0.1～16Mpa.Tank body top is provided with tail gas recycle mouth 17.
The high efficiency photocatalysis sewage water treatment method, organic sewage is mixed evenly with oxygenant, aeration simultaneously, with feed water flow, passes through superpower ultraviolet lamp and nano-TiO
2the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photochemical catalysis is processed; After sewage, medicament, aeration are mixed evenly, by superpower ultraviolet lamp and nano-TiO
2the time of the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photochemical catalysis is more than 5min; Temperature of reaction is preferably in more than 10 ℃, especially 15-40 ℃ or higher.
Oxygenant is K
2feO
4, Na
2o
2, Potassium Persulphate, FeCl
3or Fenton reagent, also can adopt H
2o
2, simultaneously mixed with organic sewage, the quality of interpolation is adjustable.
Organic sewage is mixed evenly with oxygenant, aeration simultaneously, with feed water flow by ultraviolet lamp and nano-TiO
2the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photochemical catalysis.Medicament, aeration are mixed evenly, by ultraviolet lamp and nano-TiO
2the time of the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photochemical catalysis is more than 5min; Temperature of reaction is preferably in more than 10 degrees centigrade, especially 20-40 degree centigrade.
Medicament is K
2feO
4, Na
2o
2, Potassium Persulphate, FeCl
3, or Fenton reagent, also can adopt H
2o
2, simultaneously mixed with organic sewage, the quality of interpolation is 10-10000mg/L or larger.
FeCl
3, or Fenton reagent be classified as the acidic oxidation agent, and K
2feO
4, Na
2o
2, Potassium Persulphate is classified as the alkaline oxidiser class, after a class oxygenant is processed, after processing after testing, the COD value (or biodegradability) of organic sewage adopts acidity and the another kind of of alkaline oxidiser to be processed again while not dropping to 50%.Be K
2feO
4, Na
2o
2, Potassium Persulphate and acidic oxidation agent FeCl
3, the Fenton reagent cross processing, change the oxygenant transit time and adopt hydrogen peroxide as neutral oxygenant.Organic sewage is removed particulate matter through low efficient filter screen and is carried out photocatalysis treatment again.
Combined sewage enters and is equipped with under the strong oxidizer (hydroxyl radical free radical etc.) produced in 150～280nm ultraviolet ray (UV-C) and light-catalyzed reaction acts on, and makes various organic pollutants can effectively open molecule, even resolve into nontoxic water, carbonic acid gas and free of contamination inorganics.
FeCl
3or Fenton reagent is classified as the acidic oxidation agent, and K
2feO
4, Na
2o
2, Potassium Persulphate is classified as the alkaline oxidiser class.After a class oxygenant is processed, after processing after testing, the COD value (or biodegradability) of organic sewage adopts another kind of oxygenant to be processed again while not dropping to 50%.
Mixed sewage enters and is equipped with under the strong oxidizer effect of 150～280nm ultraviolet ray (UV-C) and light-catalyzed reaction generation, makes various organic pollutants can effectively open molecule, even resolve into nontoxic water, carbonic acid gas and free of contamination inorganics.Aeration more contributes to treatment effect while being oxygen rich gas, pure oxygen or ozone.
The invention has the beneficial effects as follows: can be directly used in the organic sewage of processing more high pollution (COD can be greater than 10000mg/L more than), generally cheaply the COD value of the organic sewage of high pollution to be reduced by more than 50, especially the semi-underground pollution sewage on the ground in heavily contaminated source, be included in necessary sewage to be processed in the rehabilitating soil pollution course, after the present invention processes by aeration or adopt again the method for Fenton flocculation, carry out again biochemistry, the efficiency raising of aeration flocculation ，Shi Hou road.
It is 150～280nm that the light source adopted sends ultraviolet wavelength, can excite TiO
2photocatalysis, direct kill bacteria again, the life-span of ultraviolet lamp tube is greater than 10000 hours.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Embodiment
The present invention is to provide a kind of high efficiency photocatalysis treatment process and device that photochemical catalysis is major technique, auxiliary oxygenant of take, referring to accompanying drawing 1.
The high efficiency photocatalysis water treatment device, comprise that tank body 1, silica tube 2, backflow interface 3, superpower ultraviolet lamp tube 4, three-dimensional ceramic honey comb net photochemical reaction chamber (comprise nano-TiO
2three-dimensional ceramic honey comb net 5), cleaning blade 6, sewage water distributor 7, sewage interface 8, aeration interface 9, aeration assembly 10, sewage draining exit 11, cloth medicine assembly 12, medicament interface 13, low efficient filter screen 14, high pressure recoiling device 15, high pressure water interface 17, tail gas recycle mouth 17 and reciprocator 18 etc. partly form; Tank body, tank body lower part is provided with organic sewage, oxygenant, three imports of aeration, and top is ultraviolet lamp and nano-TiO
2the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photocatalyst.Further, organic sewage, oxygenant, three imports of aeration are the import that uniform flux distributes, and especially, on plane separately, all have the function that flow is even and flow is controlled.Current 22, aeration gas flow 23, tail gas discharge 24 after current 20, medicament injection 21, processing after High-Pressure Water 19, processing.
TiO
2the structure of the three-dimensional ceramic honey comb net photochemical reaction chamber of photocatalyst is: three-dimensional ceramic honey comb floor and ultraviolet source floor have 2 to N floor, nano-TiO
2the even perforate of the three-dimensional ceramic honey comb layer of photocatalyst is straight up, and 150～280nm ultraviolet tube of vertical parallel has 1 to N root, and can be through the hole of the online face of three-dimensional ceramic honey comb.Also can adopt the mode of annular ultraviolet lamp tube horizontal positioned, now the online face of three-dimensional ceramic honey comb is without perforate.
Be provided with the metal gate graticule mesh of parallel placement, evenly place nano-TiO
2the three-dimensional ceramic honey comb layer of photocatalyst.
Superpower ultraviolet lamp tube is placed in quartz socket tube, the outer fixed in position of quartz socket tube degree of tightness coordinate suitable cleaning blade, quartz socket tube is driven while moving up and down by reciprocator, can effectively clean the silica tube outer wall, the raising oxidation efficiency also reduces hand labor.
The high pressure water recoiling device can, so that clean rapidly in tank body, be enhanced productivity.
Owing to being provided with the tail gas recycle mouth, when tail gas does not reach emission standard, we can be by aftertreatment device such as adsorption towers, by vent gas treatment to meeting emission request.
Oxygenant is K
2feO
4, Na
2o
2, FeCl
3, Potassium Persulphate or Fenton reagent, H
2o
2, or organic sewage simultaneously with oxidizing gas (air, oxygen rich gas, pure oxygen or ozone all can).After processing after testing, the COD value (or biodegradability) of organic sewage adopts acidity and the another kind of of alkaline oxidiser to be processed again while not dropping to 50%.
The most important thing is ultraviolet lamp and nano-TiO in the high efficiency photocatalysis treatment unit
2the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photocatalyst.TiO
2the preparation of the three-dimensional ceramic honey comb net of photocatalyst can be also nanometer composite Ti O
2photocatalyst.At first be the presoma-metatitanic acid colloidal sol preparation of composite photo-catalyst TiO2, by wall thickness≤0.2mm, on per square inch, the cordierite-quality honeycombed ceramics (having certain sheet thickness) in 200～400 holes being arranged is carrier impregnation 2～10min in composite titanic acid colloidal sol, then with the 5cm/min linear velocity, lifts, dries and through roasting.The mesh area 3.0～5.0m of every networking plate
2, composite Ti O
2the charge capacity of photocatalyst film (dry product) on carrier is 0.3mg/cm
2, TiO
2particle diameter is 10～30nm, and the thickness of loaded film is 300～600nm etc.TiO
2the three-dimensional ceramic honey comb net of photocatalyst-type load; TiO
2photocatalyst-type is TiO
2a small amount of iron, lanthanum or cerium ion adulterate.
Especially 3 to 5 layers, three-dimensional ceramic honey comb layer and ultraviolet source layer, nano-TiO
2the even perforate of the three-dimensional ceramic honey comb kind layer of photocatalyst is straight up, and 150～280nm ultraviolet source layer is the preferably annular ultraviolet lamp tube of or plane parallel level horizontal with level of ultraviolet lamp tube cylindricality fluorescent tube.In figure, be the perpendicular fluorescent tube of putting, the even perforate of three-dimensional ceramic honey comb kind layer will be parallel to fluorescent tube.
Especially adopt potassium ferrate as oxygenant, potassium ferrate is the glossy powder of mulberry.The very easily water-soluble light violet magenta solution that forms, can decompose after standing and emit oxygen, and be settled out hydrated ferric oxide (being ferric oxide).The alkalescence of solution increases with decomposition, and quite stable in strong alkali solution is fabulous oxygenant.There is efficient disinfection.There is stronger oxidisability than potassium permanganate.Potassium ferrate is that central atom Fe exists with sexavalence, under acidic conditions and alkaline condition under Standard Electrode Potentials be respectively 2.20V and 0.72V, therefore, no matter at acidic conditions, or under alkaline condition, ferrate all has extremely strong oxidisability, can be widely used in oxidation, sterilization, the sterilization of water and sewage.
Potassium ferrate has good removal effect for the BOD in sewage, COD, lead, cadmium, sulphur etc., the BOD of potassium ferrate oxidation more than 70% of 30mg-1000mg/L, the ammonia nitrogen of removal 75% and 55% phosphorus, potassium ferrate also has good throwing out, show in water in the process with the pollutent effect, through series reaction, by sexavalence, be down to trivalent, with the intermediate state of different electric charges as: the Fe(V)/Fe(VI) etc., and progressively be reduced into the Fe(III with throwing out).Bring into play the synergy of oxidation, absorption, flocculation, precipitation, sterilizing, sterilization, decolouring, deodorizing simultaneously, do not produce any poisonous, harmful material.
The preparation of present device: nanometer composite Ti O
2the three-dimensional ceramic honey comb net of photochemical catalysis; The honeycomb ceramic body of the catalyst cupport body of the vent gas treatment of employing motor vehicle.Every height 2-10cm gets final product, and UV-light can fully be irradiated.
The present invention adopts loaded with nano level composite Ti O
2the three-dimensional ceramic honey comb net of film, its specific surface area is large, light transmission good, physical strength is high, photocatalysis efficiency and photo-quantum efficiency is high, photocatalytic activity is lasting.Make the pollutent in sewage obtain parallel off and remove.
In device feature, prepare nanometer composite Ti O
2the three-dimensional ceramic honey comb net means of photochemical catalysis is the most key: be then that by wall thickness≤0.2mm, on per square inch, the cordierite-quality honeycombed ceramics (having certain thickness rectangular-shaped) in 200～400 holes to be arranged be solid support material, impregnated in 2～10min in composite titanic acid colloidal sol after finishing, then with the 5cm/min linear velocity, lift, dry; To flood and roasting process repeats 2～8 times, finally obtain nanometer composite Ti O
2the three-dimensional ceramic honey comb net of photochemical catalysis.
In above-mentioned manufacture method, indoor many ultraviolet lamps and the polylith photochemical catalysis three-dimensional ceramic net of having adopted of light-catalyzed reaction, the position cross arrangement of lamp and net, make each mesh all can accept illumination.The filtering net of installing at the entery and delivery port place, be provided with power supply, adopt speed control by frequency variation to buttons such as the flow rate control device of pump, time control, and the equipment shell bottom is equipped with roller and is convenient to movement.Casing is not revealed, is prevented UV-light and harmful sewage except sealing and leaks.
The mesh area 3.0～5.0m of the web plate of every group of three-dimensional ceramic net
2, composite Ti O
2the charge capacity of photocatalyst film on carrier is 0.31mg/cm2, and the TiO2 particle diameter is 15～20nm, and the thickness of loaded film is 400～500nm etc.Ultraviolet source adopts the ultraviolet lamp tube of many 30-200W.Then a kind of high efficiency photocatalysis water treating device of manufacturing, the flow of processing water is 0.05-0.5m
3/ min, carry out flow control by flooding quantity.With this equipment with 0.1m
3the flow of/min (the undressed high-concentration sewage that two dyestuff intermediates in chemical development district are produced of disposing of sewage, COD is 13500 organic sewage approximately), the weight of adding potassium ferrate is, 45,100,1300,2800mg/L potassium ferrate, by flooding quantity, to the treatment effect of water, be: the clearance of COD is 41～69%, flow slows down and increases the composition of potassium ferrate, makes to remove efficiency and improves.
It is Na that above-mentioned sewage can also add oxygenant
2o
2, Potassium Persulphate or, FeCl
3, Fenton reagent, also can adopt H
2o
2, addition and above-mentioned and organic sewage are simultaneously mixed, and the quality of interpolation is also 45,100,1300, every liter of 2800mg/L; FeCl
3, or Fenton reagent be classified as the acidic oxidation agent, and K
2feO4, Na
2o
2, Potassium Persulphate is classified as the alkaline oxidiser class, after a class oxygenant is processed, after processing after testing, the COD value (or biodegradability) of organic sewage adopts acidity and the another kind of of alkaline oxidiser to be processed again while not dropping to 50%.Be K
2feO
4, Na
2o
2, Potassium Persulphate and acidic oxidation agent FeCl
3, the Fenton reagent cross processing, change the oxygenant transit time and adopt hydrogen peroxide as neutral oxygenant.In the situation that one times of flow, after acid and two kinds of oxygenant same amounts of alkalescence are processed, the clearance of COD is more than 90%.
Reaction a plurality of ultraviolet lamps of indoor location and multi-layer nano composite Ti O
2three-dimensional light catalyzed honeycomb ceramic network, the ceramic honey comb hole is parallel with current direction; Every thickness of ceramic honey comb net is 1-6cm, and each mesh is fully accepted illumination.Reaction chamber wall adopts the high-intensity reflecting material, and guarantees the rest part sealing outside the deacration import and export in the course of processing, keeps the reflecting effect of inwall.It is 150～230nm that light source preferably sends ultraviolet wavelength, can excite TiO
2photocatalysis, direct kill bacteria again, and can produce ozone, adopt the nanometer composite Ti O after doping
2the optical efficiency of the three-dimensional ceramic honey comb net of photochemical catalysis also can improve a lot.
Because each ultraviolet light is furnished with the signal detection data line, therefore can understand intuitively the working condition of each ultraviolet lamp tube.
Fixedly mount degree of tightness at the outer wall of silica tube and coordinated suitable cleaning blade, therefore, when silica tube moves up and down, possible foreign material can have been struck off from quartzy tube wall, made UV-light play a role fully.
Claims (5)
1. the high efficiency photocatalysis waste disposal plant, is characterized in that comprising tank body, silica tube, backflow interface, superpower ultraviolet lamp tube, three-dimensional ceramic honey comb net photochemical reaction chamber, sewage water distributor, sewage interface, aeration interface, aeration assembly, sewage draining exit, cloth medicine assembly, medicament interface, low efficient filter screen, high pressure recoiling device, high pressure water interface, tail gas recycle mouth and reciprocator; Tank body lower part is provided with organic sewage interface, aeration interface and three interfaces of medicament interface; Top is ultraviolet lamp and nano-TiO
2the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photocatalyst; Tank body top is provided with the tail gas recycle mouth; Sewage water distributor, cloth medicine assembly and three assemblies of aeration assembly, on plane separately, all have the valve that flow is even and flow is controlled; TiO
2the structure of the three-dimensional ceramic honey comb net photochemical reaction chamber of photocatalyst is: three-dimensional ceramic honey comb net has 2 to N floor, nano-TiO
2the even perforate of the three-dimensional ceramic honey comb layer of photocatalyst is vertical, 150～280nm ultraviolet tube of vertical parallel has 1 to N root, N equals 8 to 16, and can be through the hole of the online face of three-dimensional ceramic honey comb, also can adopt the mode of annular ultraviolet lamp tube horizontal positioned, now the online face of three-dimensional ceramic honey comb is without perforate; Every fluorescent tube all is furnished with and guarantees signal detection data line working properly; Ultraviolet lamp tube is placed in quartz socket tube, the outer fixed in position cleaning blade of quartz socket tube, and quartz socket tube is driven and can be moved up and down by reciprocator;
Be provided with the metal gate graticule mesh of parallel placement, evenly place nano-TiO
2the three-dimensional ceramic honey comb layer of photocatalyst.
2. high efficiency photocatalysis waste disposal plant according to claim 1, is characterized in that being provided with the high pressure water recoiling device, and its water pressure is adjustable between 0.1～16Mpa.
3. high efficiency photocatalysis sewage water treatment method according to claim 1, is characterized in that organic sewage mixes with oxygenant, aeration simultaneously, passes through superpower ultraviolet lamp and nano-TiO with feed water flow
2the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photochemical catalysis is processed; After sewage, medicament, aeration are mixed evenly, by superpower ultraviolet lamp and nano-TiO
2the time of the photochemical reaction chamber of the three-dimensional ceramic honey comb net of photochemical catalysis is more than 5min; Temperature of reaction is 15-40 ℃; Oxygenant is K
2feO
4, Na
2o
2, Potassium Persulphate, FeCl
3, Fenton reagent or H
2o
2, with organic sewage, to mix simultaneously, the quality of interpolation is adjustable.
4. high efficiency photocatalysis sewage water treatment method according to claim 3, is characterized in that FeCl
3or Fenton reagent is classified as the acidic oxidation agent, and K
2feO
4, Na
2o
2, Potassium Persulphate is classified as the alkaline oxidiser class; After acidity or alkaline oxidiser are processed, when after processing after testing, the COD value of organic sewage drops to 50%, do not adopt again alkalescence or acidic oxidation agent to be processed.
5. high efficiency photocatalysis water treatment method according to claim 3, it is characterized in that combined sewage enters is equipped with under the strong oxidizer effect of 150～280nm ultraviolet ray and light-catalyzed reaction generation, makes various organic pollutants can effectively open molecule, even resolve into nontoxic water, carbonic acid gas and free of contamination inorganics; Aeration is oxygen rich gas, pure oxygen or ozone.
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| CN104609500B (en) * | 2015-01-19 | 2016-08-24 | 中国科学院过程工程研究所 | A kind of ozone enhanced photocatalysis reactor and method for treating water |
| CN104591323B (en) * | 2015-02-02 | 2015-11-18 | 汪涛 | A kind of can the sewage treatment pot of reverse cleaning and purging method thereof |
| CN104628056B (en) * | 2015-02-02 | 2015-09-16 | 汪贤女 | A kind of sewage treatment pot with feeder and purging method thereof |
| CN105923697B (en) * | 2016-06-08 | 2018-12-11 | 鞍山市亿方环境科技有限公司 | The preparation method of multi-stag photocatalytic ozonation reactor and its photochemical catalyst |
| CN107010693A (en) * | 2017-05-26 | 2017-08-04 | 佛山柯维光电股份有限公司 | A kind of fluorescent tube with different optical filtering wave bands and use its water disinfecting device |
| CN107324445A (en) * | 2017-08-04 | 2017-11-07 | 南京河海环境研究院有限公司 | A kind of light catalytic waste water processing device |
| CN108455699B (en) * | 2018-01-31 | 2021-08-27 | 常州澳弘电子股份有限公司 | Photocatalysis large-area sewage treating scheme |
| CN108455700A (en) * | 2018-02-07 | 2018-08-28 | 长兴科创科技咨询有限公司 | A kind of method of photocatalytic treatment of industrial waste water |
| CN108502969A (en) * | 2018-03-16 | 2018-09-07 | 北京交通大学 | Using the sewage disposal system of photocatalytic degradation UF membrane |
| CN110734158B (en) * | 2018-07-19 | 2022-12-13 | 中国石油化工股份有限公司 | Sewage treatment device, multistage sewage treatment equipment, sewage treatment system and sewage treatment method |
| CN109437367B (en) * | 2018-12-10 | 2020-01-17 | 广东智环创新环境科技有限公司 | Advanced oxidation equipment based on fluidized bed photocatalytic reactor |
| CN114684984B (en) * | 2022-04-12 | 2023-03-24 | 安徽钰隆新能源科技集团有限公司 | Photocatalytic reactor for water treatment |
| CN114506946B (en) * | 2022-04-15 | 2022-06-24 | 深圳市世邦环境科技有限公司 | Closed-loop disinfection and deodorization device for volatile waste water body |
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| US6315963B1 (en) * | 2000-03-22 | 2001-11-13 | Samuel E. Speer | Method and apparatus for the enhanced treatment of fluids via photolytic and photocatalytic reactions |
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