CN1420087A - Fixed membrane optocatalytic oxidation water treating system - Google Patents
Fixed membrane optocatalytic oxidation water treating system Download PDFInfo
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- CN1420087A CN1420087A CN 02157691 CN02157691A CN1420087A CN 1420087 A CN1420087 A CN 1420087A CN 02157691 CN02157691 CN 02157691 CN 02157691 A CN02157691 A CN 02157691A CN 1420087 A CN1420087 A CN 1420087A
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- water
- oxidation reaction
- reaction device
- filter element
- photocatalysis oxidation
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Abstract
A photocatalytic oxidizing system with fixed membrane for treating water or sewage by removing organic substances from them is composed of water tank, water feeding pump, chemical oxidizing reactor, photocatalytic oxidizing reactor, and flowmeter. The photocatalyst can be instantaneously generated and back flushed out. Its advantages are high effect, able to recover photocatalyst, and low cost.
Description
Technical field
The present invention relates to a kind of novel photo-catalytic oxidation device with fixed film for water treatment.The present invention can be widely used in the organism of removing in water and the waste water, is specially adapted to the terminal process of advanced treatment, high purity water of the processing of various organic wastewater with difficult degradation thereby, high density, high chroma organic waste water and tap water and pre-treatment etc.
Background technology
In recent decades, along with developing rapidly of organic chemical industry, petrochemical complex, medicine, agrochemical industry, the kind and the output of organic compound grow with each passing day.And having entered particularly water surrounding of human environment by various approach, the organism in the water surrounding has 96000 kinds more than approximately according to estimates.They are very big to the harm of environment.No matter be river, river, lake water or waste water or tap water, Organic pollutants have wherein become the subject matter that water pollutes.Therefore, the organic pollutant of removing in the water has become one of top priority of water treatment.Particularly organism and the ammonia nitrogen concentration in high density, the organic wastewater with difficult degradation thereby such as percolate, pharmacy waste water, coking chemical waste water, paper waste, petrochemical wastewater is all very high, even has toxicity, biological degradability is poor, and traditional biochemical treatment often is difficult to obtain the anticipation effect.
Photochemical catalytic oxidation starts under the rayed excite transitions of electronics in the semi-conductor, with UV/TiO
2The most common.Proved that if the enough reaction times is arranged photochemical catalytic oxidation can be CO with the organism permineralization
2And H
2Simple inorganics such as O is as adding H simultaneously
2O
2, O
3Deng additional oxidizer, then effect is better.But because traditional suspension type photochemical catalytic oxidation is directly with TiO
2Powder places waste water, by UV-irradiation, and TiO after reaction is finished
2Powder and water separate not only time-consuming but also effort and can't applying.Traditional fixedly film photocatalytic oxidation adopts methods such as so-gel or vapor deposition to make TiO in advance on carriers such as glass fibre (cloth), glass sphere
2Film, film complexity, cost height, and film forming thickness is very limited, the efficient of photocatalysis oxidation reaction is low, is difficult to adapt to the requirement of actual engineering, simultaneously, cleaning behind the photocatalyst film " poisoning " or replacing are complicated, thereby have also limited photocatalysis oxidation technique to practical technical transform.Therefore, photocatalysis oxidation technique is not applied to actual engineering of water treatment so far.
Summary of the invention
The objective of the invention is at the problems referred to above, design a kind of be applicable to that actual engineering of water treatment needs, can efficiently remove various organic novel fixedly film photocatalytic oxidizing water treatment systems in the water.
The present invention adopts chemical oxidation, photoxidation and photochemical catalytic oxidation combined apparatus, and various organism in the water are thoroughly removed.The device that is used to realize the object of the invention is made up of water tank, intake pump, chemical oxidation reaction device, photocatalysis oxidation reaction device and under meter and the pipeline, the valve that are linked to be together.The chemical oxidation reaction device is intake by top, the bottom water outlet.The photocatalysis oxidation reaction device is instant film-forming type, by bottom water inlet, top water outlet.Tank top is provided with the speed governing agitator.Water tank upper is equipped with water inlet pipe and water inlet control valve successively, and dosing control valve and dosing mouth also are housed on the water inlet pipe successively.The water tank bottom is connected with intake pump by pump inlet valve.The intake pump outlet divides upper and lower two-way to be connected with chemical oxidation reaction device, photocatalysis oxidation reaction device respectively by a threeway, two valves with two pipelines.The pipeline on following road is connected with the check valve of chemical oxidation reaction device bottom water outlet earlier, and then be connected with the blow-off valve that install the bottom water-in and the photocatalysis oxidation reaction device bottom of photocatalysis oxidation reaction device respectively by threeway, so that photocatalyst is reclaimed by blow-off valve.The water outlet at photocatalysis oxidation reaction device top is by two branch roads of one three reduction of fractions to a common denominator, and a branch road is connected with under meter by outlet water control valve, but make removed various organism after qualified water after under meter is exported, become water purification or discharge water; Another branch road is back to by return line and forms circulation in the water tank.The pipeline of setting out on a journey of intake pump is by one three reduction of fractions to a common denominator two-way, and one the tunnel is connected with chemical oxidation reaction device top water intaking valve, and another road is passed through a threeway and is connected with two recirculation water control valves on the recirculation water pipeline of photocatalysis oxidation reaction device top respectively.
The chemical oxidation reaction device is made up of cylindrical housings, flanged (FLGD) spherical upper cover, taper lower cover and built-in polyhedron filler.The first side of the lower seal of chemical oxidation reaction device is equipped with the charging opening of band check valve, so that make gaseous oxidant such as ozone enter the chemical oxidation reaction device, participates in chemical oxidation, photooxidation.
The photocatalysis oxidation reaction device is instant film-forming type, ultraviolet germicidal lamp by flanged (FLGD) spherical upper cover, taper lower cover, cylindrical housings, foraminous dividing plate, filter element and band quartz socket tube is formed, can instant as required film forming, photocatalysis oxidation reaction takes place and immediately photocatalyst film is recoiled and wash off.The foraminous dividing plate is divided into two portions with the photocatalysis oxidation reaction device, and top is clean water chamber, and the bottom is the photocatalysis oxidation reaction chamber.Filter element can firmly be welded into cylindrical skeleton by annular top board, stainless steel column, circular bottom plate; Hexagon top board, hexagon base plate and stainless steel column that also can be by hollow firmly connect into the filter element skeleton of hexahedral shape by nut, and then tightly wrap up stainless (steel) wire or nylon wire in the skeleton outside, plastic wire is made.The outside of filter element can apply or remove photocatalyst film on the net as required immediately, removes organic processing requirement in the water to satisfy.Be connected with filter element nut, filter element bolting with the foraminous dividing plate with the top retaining plate that filter element is solidified as a whole.By screw bolt and nut flanged (FLGD) spherical upper cover, the porose dividing plate of intrinsic filter element, cylindrical housings are solidified as a whole.Photocatalysis oxidation reaction device middle-ultraviolet lamp germicidal lamp of the present invention passes upper cover and is connected with power supply, and quartz socket tube and upper cover are sealed into one by silk mouth screen cap.The ultraviolet germicidal lamp of band quartz socket tube can place filter element inside, also can place the filter element outside.Can insert from photocatalysis oxidation reaction device upper cover when ultraviolet germicidal lamp places filter element outside, also can insert from photocatalysis oxidation reaction device hull outside.In order to increase intensity of illumination, also can ultraviolet germicidal lamp be set simultaneously in filter element inside and filter element outside.
During work, at first in the water tank that is added with water in advance, add photocatalyst powder, start the speed governing stirrer, make slurries.Start intake pump then, the photocatalyst slurries begin to circulate between water tank and photocatalysis oxidation reaction device.Through the circulation of 20min, slurries can become clearly, and this moment, the filter element surface formed the photocatalyst filter membrane.Begin in water tank, to inject waste water then, light ultraviolet germicidal lamp, open and regulate photocatalysis oxidation reaction device outlet valve, require the control water flow according to waste water quality and effluent quality, promptly control the residence time of waste water in the photocatalysis oxidation reaction device, unnecessary return of waste water is to water tank.When waste water was flowed through the photocatalyst filter membrane, under ultraviolet irradiation, photocatalyst was excited and produces the hydroxyl radical free radical (OH) with extremely strong oxidation capacity, can directly the organic pollutant in the water be degraded to CO
2, H
2Simple inorganics such as O, perhaps the organic pollutant with difficult for biological degradation is oxidized to biodegradable organism, improves the biodegradability of waste water.
For speed and the efficient that improves photocatalysis oxidation reaction, can also in water tank or chemical oxidation reaction device, add chemical oxidizing agent.The oxygenant that adopts among the present invention can be ozone, hydrogen peroxide or pure oxygen, also can be air.The oxygenant of liquid or solid can be by reacting in the adding of the dosing mouth on the water inlet pipe of the pending water of the water tank upper water tank, and gaseous oxidant can add by the charging opening of chemical oxidation reaction device bottom.
Photocatalyst among the present invention can be TiO
2, WO
3, ZrO
2, V
2O
5, MoO
3, ZnO
2One or more mixing in the powder.
The present invention has following characteristics and advantage:
1, owing in the photocatalysis oxidation reaction device of forming water tank of the present invention, chemical oxidation reaction device, instant film-forming type, adds O
3Or (with) H
2O
2Deng oxygenant and TiO
2Deng photocatalyst, make the present invention realize chemical oxidation, photoxidation and photochemical catalytic oxidation coupling.Photocatalyst film of the present invention does not need to make in advance, but forms immediately, recoils immediately and wash off.The thickness of photocatalyst film and aperture, prescription can be adjusted at any time.Light intensity also can be adjusted as required.Formed photocatalyst membrane pore size is equivalent to smart filter membrane, thereby when finishing light-catalyzed reaction, has a smart filter effect, can remove turbidity, SS, colloid, suspended substance and the floating matter of water simultaneously, the turbidity of filter back water can reach zero Ntu, water quality is as clear as crystal, therefore the present invention has not only solved the immobilization problem of photocatalyst, solve the separation problem of reaction back photocatalyst and water, and photocatalysis oxidation reaction is effective.
2, the filter element in the photocatalysis oxidation reaction device of instant film-forming type of the present invention can be set up in advance, can form photocatalyst film easily immediately on the filter element, the ultraviolet germicidal lamp that is provided with can take out replacing easily, so the present invention is rational in infrastructure, easy to maintenance.
3, because the present invention can utilize intake pump easily the photocatalyst film recoil to be washed off, the photocatalyst under the back flushing can also utilize once more.So the present invention has not only solved the separation problem of reaction back photocatalyst and water, but also can reclaim photocatalyst, working cost is low.
4. the present invention is of many uses, both can be used as the processing of various water and waste water separately, can be used as the pre-treatment or the terminal process of conventional water treatment process again, water outlet can directly be discharged or reuse, saves precipitation, air supporting or other solid-liquid separation means and terminal sterilisation measure.
Description of drawings
Fig. 1 is a system schematic of the present invention.
Fig. 2 is the structural representation of photocatalysis oxidation reaction device of the present invention.
Fig. 3 is the A-A synoptic diagram of photocatalysis oxidation reaction device.
Fig. 4 is the structural representation of the filter element of photocatalysis oxidation reaction device.
Fig. 5 is the B-B synoptic diagram of the filter element of photocatalysis oxidation reaction device.
Embodiment
See also Fig. 1.The present invention is formed by pipe connection by water tank 1, intake pump 6, photocatalysis oxidation reaction device 12, chemical oxidation reaction device 20 and under meter 15.Speed governing stirrer 2 is installed at water tank 1 top, and the stirring arm of speed governing stirrer 2 places in the water tank 1.Water tank 1 top is provided with water inlet pipe and water inlet control valve 4 successively.Dosing control valve 3 and dosing mouth also are housed successively, so that as required the liquid or solid oxygenant is added in the water tank 1 on the water inlet pipe.Water tank 1 bottom is connected with intake pump 6 by pump inlet valve 5.The outlet of intake pump 6 divides upper and lower two-way to be connected with chemical oxidation reaction device 20, photocatalysis oxidation reaction device 12 respectively by a threeway, two valves 7,8 with two pipelines successively.Chemical oxidation reaction device 20 is by top water inlet, bottom water outlet.Photocatalysis oxidation reaction device 12 is by bottom water inlet, top water outlet, and its front also is provided with viewing window 13.The pipeline on the following road of intake pump 6 is connected with the check valve 10 of chemical oxidation reaction device 20 bottom water outlets earlier, and then be connected with the bottom water-in of photocatalysis oxidation reaction device 12 and the blow-off valve 11 of photocatalysis oxidation reaction device 12 bottoms by a threeway, so that pass through blow-off valve 11 photocatalyst is reclaimed.The water outlet at photocatalysis oxidation reaction device 12 tops is by two branch roads of one three reduction of fractions to a common denominator, and a branch road is connected with under meter 15 by outlet water control valve 14, but make removed various organism after qualified water after under meter 15 is exported, become water purification or discharge water; Another branch road is back to and forms circulation in the water tank 1 by return line and recirculation water control valve 16,23.The pipeline of setting out on a journey of intake pump 6 is by one three reduction of fractions to a common denominator two-way, one the tunnel is connected with chemical oxidation reaction device 20 top water intaking valves 21, another road is by valve 22 and a threeway, respectively with photocatalysis oxidation reaction device 12 top recirculation water pipelines on recirculation water control valve 16,23, and the recirculation water pipe connection that is connected with water tank 1 constitutes.
Chemical oxidation reaction device 20 is made up of housing 19, upper and lower end socket and built-in polyhedron filler 18.The first side of the lower seal of chemical oxidation reaction device 20 is equipped with the inlet that adds of band gaseous oxidant of check valve 9 such as ozone.Upwards spray the waste water that gets off with top contacts, mixes and finish chemical oxidation reaction to the porous plate 17 that the gaseous oxidant that adds is provided with by chemical oxidation reaction device 20 bottoms in polyhedron filler 18.
See also Fig. 2 and Fig. 3.Photocatalysis oxidation reaction device 12 of the present invention is instant film-forming type; ultraviolet germicidal lamp 29, filter element 31, taper lower cover 32, water distribution board 33, a silk mouthful screen cap 36 by spherical upper cover 24, foraminous dividing plate 25, bolt 26, nut 27, cylindrical housings 28, quartz socket tube 30 protections are formed, and its front is provided with viewing window 13.Foraminous dividing plate 25 is divided into two portions with photocatalysis oxidation reaction device 12, and top is clean water chamber, and the bottom is the photocatalysis oxidation reaction chamber.Place 4 filter elements 31 in the housing 28 all to be solidified as a whole by filter element nut 34, filter element bolt 35, be solidified as a whole with bolt 26 and nut 27 foraminous dividing plate 25, housing 28 again upper cover 24, intrinsic filter element 31 with foraminous dividing plate 25.The ultraviolet germicidal lamp 29 that has quartz socket tube 30 passes upper cover 24 and inserts in the filter element 31.Quartz socket tube 30 is sealed into one with upper cover 24 by silk mouth screen cap 36.The intrinsic water distribution board 33 in lower end of conical lower cover 32.See also Fig. 4 and Fig. 5.Each filter element 31 firmly connects and composes by top retaining plate 37, top board 38, Stainless Steel Cloth 39, post 40 and base plate 41.Top board 38 is an annular, the equal diameters of its external profile diameter and circular bottom plate 41.Earlier 12 posts 40 firmly are welded on the outer rim of top board 38 and base plate 41, form skeleton, and then tightly wrap up stainless (steel) wire 39, make filter element 31 be rendered as cylindrical shape in the skeleton outside.The top board 38 and the top retaining plate 37 of filter element 31 are welded as a whole, and by filter element nut 34, filter element bolt 35 top retaining plate on the filter element 31 37 and porous plate 25 are solidified as a whole again.The inside of filter element 31 is provided with the ultraviolet germicidal lamp 29 of band quartz socket tube 30.Can apply or remove the photocatalyst filtrate as required immediately on the Stainless Steel Cloth 39, with the processing requirement of organism and turbidity, SS, colloid, suspended substance, floating matter and bacterium, virus in the satisfied removal water.
During work, at first in the water tank 1 that is added with water in advance, add commercially available TiO
2Powder starts speed governing stirrer 2, makes slurries.Open valve 5 then, start intake pump 6, open valve 7, recirculation water control valve 16,23 again, the photocatalyst slurries enter photocatalysis oxidation reaction device 12 by the bottom, slit by filter element outside stainless (steel) wire 39 enters the filter element 31 inner clean water chambers that flow into, flow out by photocatalysis oxidation reaction device 12 tops again, and beginning circulation between water tank 1 and photocatalysis oxidation reaction device 12.Through 20 minutes circulation, it is clear that the photocatalyst slurries become, and this moment, filter element 31 surfaces formed the photocatalyst filter membrane.In water tank 1, inject waste water then, light ultraviolet germicidal lamp 29 again, open and adjust water control valve 14 again, control water flow meter 15 is meeting the water flow of processing requirement, determine the residence time of waste water in photocatalysis oxidation reaction device 12 according to waste water quality, unnecessary waste water then is back to water tank 1.When waste water was flowed through the photocatalyst filter membrane, under ultraviolet irradiation, photocatalyst was excited and produces the hydroxyl radical free radical (OH) with extremely strong oxidation capacity, can directly the organic pollutant in the water be degraded to CO
2, H
2Simple inorganics such as O.When photocatalysis oxidation reaction carried out, photocatalyst film was also at the performance filteration.
Add liquid oxidizer such as hydrogen peroxide if desired, then can oxygenant be added in waste water and in water tank 1 and finish chemical oxidation reaction by dosing mouth on the water tank 1 top wastewater inlet pipe and valve 3.
Add gaseous oxidant such as ozone if desired, then can start working at photocatalysis oxidation reaction device 12, control well behind the water flow of under meter 15, open water intaking valve 21, slowly open valve 8 again, while is valve-off 7 slowly, and waste water is flowed into by chemical oxidation reaction device 20 tops, and the bottom enters photocatalysis oxidation reaction device 12 after flowing out again.Open ozonizer power supply, ozone enters chemical oxidation reaction device 20 by check valve 9, and the porous plate 17 that is provided with by chemical oxidation reaction device 20 bottoms upwards spraying the waste water that gets off with top contacts, mixes and finish chemical oxidation reaction in polyhedron filler 18.Photooxidation reaction then takes place in the ozone that does not react completely in chemical oxidation reaction device 20 in photocatalysis oxidation reaction device 12.
Through chemical oxidation, photochemical catalytic oxidation, photooxidation reaction and the filtration of certain hour, the filter cake layer on photocatalyst film surface is thickening slowly, and the head loss between photocatalysis oxidation reaction device 12 reaction chambers and the clean water chamber will constantly increase.When head loss reaches 0.1Mpa or when adjusting the water flow that water control valve 14, recirculation water control valve 16 need can not to obtain, gets final product stopped reaction, wash.Close outlet water control valve 14 earlier, recirculation water control valve 23, valve-off 8, water intaking valve 21 are closed intake pump 6 again.The photocatalyst filter membrane of blow-off valve more than 11,90% of opening photocatalysis oxidation reaction device 12 then will come off and flow out, reclaim with water.Open intake pump 6 again, open valve 8, valve 22, recirculation water control valve 16, the photochemical catalytic oxidation agent filter membrane on the counterflush filter element from top to bottom 31, the photocatalyst that washes can reclaim.After rinsing well, filter element can begin new film forming and reaction process.
The present invention's use of not only can having used separately but also can connect with other unit for treating water.As be applied to wastewater treatment, the present invention can be as the terminal oxidation unit, place biochemical reactor after; Before also biochemical reactor can being placed, improve the biodegradability of waste water by photochemical catalytic oxidation.The present invention can also be applied to the processing of heavy metal wastewater thereby and the recovery of heavy metal.
Claims (7)
1, a kind of novel fixedly film photocatalytic oxidizing water treatment system is characterized in that: formed by pipe connection by water tank (1), intake pump (6), chemical oxidation reaction device (20), photocatalysis oxidation reaction device (12) and under meter (15);
Be provided with speed governing stirrer (2) in the water tank (1), water tank (1) top is provided with water inlet pipe and water inlet control valve (4) successively, and dosing control valve (3) and dosing mouth are housed on the water inlet pipe successively; Water tank (1) bottom is connected with intake pump (6) by pump inlet valve (5); The outlet of intake pump (6) divides upper and lower two-way to be connected with chemical oxidation reaction device (20), photocatalysis oxidation reaction device (12) respectively by a threeway, two valves (7), (8) and two pipelines; The pipeline on following road is connected with the check valve (10) of chemical oxidation reaction device (20) bottom water outlet earlier, and then is connected with the bottom water-in and the blow-off valve (11) of photocatalysis oxidation reaction device (12) respectively by a threeway; The water outlet at photocatalysis oxidation reaction device (12) top is by two branch roads of one three reduction of fractions to a common denominator, branch road is connected with under meter (15) by outlet water control valve (14), and another branch road is back to by return line and recirculation water control valve (16), (23) that formation circulates in the water tank (1); The pipeline of setting out on a journey of intake pump (6) is by one three reduction of fractions to a common denominator two-way, one the tunnel is connected with chemical oxidation reaction device (20) top water intaking valve (21), another road is by valve (22) and a threeway, be connected respectively with photocatalysis oxidation reaction device (12) top recirculation water pipeline, and with recirculation water control valve (23), water tank (1).
2. a kind of novel fixedly film photocatalytic oxidizing water treatment system according to claim 1, it is characterized in that: described chemical oxidation reaction device (20) is made up of housing (19), upper and lower end socket, porous plate (17) and polyhedron filler (18); The first side of lower seal is equipped with the charging opening of band check valve (9).
3. a kind of novel fixedly film photocatalytic oxidizing water treatment system according to claim 1, it is characterized in that: described photocatalysis oxidation reaction device (12) is by spherical upper cover (24), foraminous dividing plate (25), bolt (26), nut (27), cylindrical housings (28), quartz socket tube (30), ultraviolet germicidal lamp (29), filter element (31), taper lower cover (32), water distribution board (33), a silk mouthful screen cap (36) is formed: place the filter element (31) in the housing (28) all to pass through filter element nut (34) with foraminous dividing plate (25), filter element bolt (35) is solidified as a whole, and uses bolt (26) and nut (27) with upper cover (24) again, foraminous dividing plate (25), housing (28) is solidified as a whole; The ultraviolet germicidal lamp (29) that has quartz socket tube (30) passes upper cover (24) and inserts in the filter element (31); Quartz socket tube (30) is sealed into one with upper cover (24) by a silk mouthful screen cap (36); The intrinsic water distribution board in lower end (33) of conical lower cover (32).
4. photocatalysis oxidation reaction device according to claim 3 (12), it is characterized in that: filter element (31) firmly connects into the filter element skeleton of cylindrical or hexahedral shape by top retaining plate (37), top board (38), post (40) and base plate (41), tightly wraps up Stainless Steel Cloth (39) in the skeleton outside again and constitutes.
5. photocatalysis oxidation reaction device according to claim 3 (12) is characterized in that: the skeleton of filter element (31) also can wrap up nylon wire or plastic wire outward.
6. photocatalysis oxidation reaction device according to claim 3 (12), it is characterized in that: the ultraviolet germicidal lamp (29) of band quartz socket tube (30) can place filter element (31) inside, also can place filter element (31) outside, can also be provided with simultaneously in filter element (31) inside and filter element (31) outside.
7. photocatalysis oxidation reaction device according to claim 3 (12) is characterized in that: photocatalyst can be TiO
2, WO
3, ZrO
2, V
2O
5, MoO
3, ZnO
2One or more mixing in the powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02157691 CN1211295C (en) | 2002-12-24 | 2002-12-24 | Fixed membrane optocatalytic oxidation water treating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02157691 CN1211295C (en) | 2002-12-24 | 2002-12-24 | Fixed membrane optocatalytic oxidation water treating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1420087A true CN1420087A (en) | 2003-05-28 |
| CN1211295C CN1211295C (en) | 2005-07-20 |
Family
ID=4752971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02157691 Expired - Fee Related CN1211295C (en) | 2002-12-24 | 2002-12-24 | Fixed membrane optocatalytic oxidation water treating system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948548A (en) * | 2010-07-20 | 2011-01-19 | 长春工业大学 | Device and method for preparing dialdehyde starch from corn starch by photo-catalytic oxidation |
| CN102303919A (en) * | 2010-09-26 | 2012-01-04 | 中北大学 | Fixed-film photo-catalytic oxidation waste water treatment device |
| CN102633393A (en) * | 2011-02-15 | 2012-08-15 | 同济大学 | Nanotechnology integral treating device for inorganic/ organic waste water |
| CN102701317A (en) * | 2012-05-10 | 2012-10-03 | 郑州轻工业学院 | Novel photocatalysis filter tank device and water treatment system |
| CN103708598A (en) * | 2014-01-02 | 2014-04-09 | 天津大学 | Method and device for degrading polychlorinated biphenyl (PCB) in water environment by using Ni-Fe bimetal nanoparticles |
| CN104341058A (en) * | 2013-08-01 | 2015-02-11 | 甘肃省环境科学设计研究院 | Medical waste disposal wastewater treatment system |
| CN108465475A (en) * | 2018-04-04 | 2018-08-31 | 东莞市石鼓污水处理有限公司 | A kind of preparation method of WO3-ZrO2 photocatalysis sewages processing composite membrane |
-
2002
- 2002-12-24 CN CN 02157691 patent/CN1211295C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948548A (en) * | 2010-07-20 | 2011-01-19 | 长春工业大学 | Device and method for preparing dialdehyde starch from corn starch by photo-catalytic oxidation |
| CN101948548B (en) * | 2010-07-20 | 2012-06-06 | 长春工业大学 | Device and method for preparing dialdehyde starch from corn starch by photo-catalytic oxidation |
| CN102303919A (en) * | 2010-09-26 | 2012-01-04 | 中北大学 | Fixed-film photo-catalytic oxidation waste water treatment device |
| CN102303919B (en) * | 2010-09-26 | 2013-02-13 | 中北大学 | Fixed-film photo-catalytic oxidation waste water treatment device |
| CN102633393A (en) * | 2011-02-15 | 2012-08-15 | 同济大学 | Nanotechnology integral treating device for inorganic/ organic waste water |
| CN102633393B (en) * | 2011-02-15 | 2013-10-23 | 同济大学 | Nanotechnology integral treating device for inorganic/ organic waste water |
| CN102701317A (en) * | 2012-05-10 | 2012-10-03 | 郑州轻工业学院 | Novel photocatalysis filter tank device and water treatment system |
| CN104341058A (en) * | 2013-08-01 | 2015-02-11 | 甘肃省环境科学设计研究院 | Medical waste disposal wastewater treatment system |
| CN103708598A (en) * | 2014-01-02 | 2014-04-09 | 天津大学 | Method and device for degrading polychlorinated biphenyl (PCB) in water environment by using Ni-Fe bimetal nanoparticles |
| CN103708598B (en) * | 2014-01-02 | 2016-05-11 | 天津大学 | One is utilized method and the device of Polychlorinated biphenyls in Ni-Fe duplex metal nano granule degradation water environment |
| CN108465475A (en) * | 2018-04-04 | 2018-08-31 | 东莞市石鼓污水处理有限公司 | A kind of preparation method of WO3-ZrO2 photocatalysis sewages processing composite membrane |
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| Publication number | Publication date |
|---|---|
| CN1211295C (en) | 2005-07-20 |
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