CN102786177A - Magnetic nanometer titanium dioxide wastewater treatment and recovery device - Google Patents
Magnetic nanometer titanium dioxide wastewater treatment and recovery device Download PDFInfo
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- CN102786177A CN102786177A CN2012102491210A CN201210249121A CN102786177A CN 102786177 A CN102786177 A CN 102786177A CN 2012102491210 A CN2012102491210 A CN 2012102491210A CN 201210249121 A CN201210249121 A CN 201210249121A CN 102786177 A CN102786177 A CN 102786177A
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Abstract
The invention relates to a magnetic nanometer titanium dioxide wastewater treatment and recovery device. The device comprises a mixed water tank and a photocatalytic reaction chamber, wherein the top of the mixed water tank is provided with a stirring machine, the upper part of the mixed water tank is provided with a water inlet tube, the lower part of the mixed water tank is provided with a water outlet tube, the water outlet tube is connected with the water inlet tube of the photocatalytic reaction chamber, the photocatalytic reaction chamber has a multi-layer structure, the upper part in each layer of the photocatalytic reaction chamber is provided with an ultraviolet lamp light source, the middle of the each layer of the photocatalytic reaction chamber is a reaction space, the lower part of each layer of the photocatalytic reaction chamber is provided with a blast aeration tube and an electromagnetic sucker, the blast aeration tube is connected with a blower, and each layer of the photocatalytic reaction chamber is also provided with an overflow tube; and two ends of the photocatalytic reaction chamber are provided with an applied electric field, and the applied electric field is formed by an anode, a cathode and a direct-current power supply. The device which adopts a novel structure of magnetic nanometer titanium dioxide and the rectangular electromagnetic sucker enables the loss rate of the nanometer titanium dioxide to be greatly reduced, a difficult solid-liquid separation problem to be solved, the repeated utilization of a resource to be realized, the treatment cost to be reduced, and resource saving and environmental protection purposes to be reached.
Description
Technical field
The present invention relates to a kind of water treating equipment, specifically a kind of photochemical catalysis Industrial Wastewater Treatment device.
Background technology
The waste water advanced purifying reuse is the enforcement means that industry energy conservation reduces discharging.In China; The generation of organic industrial sewage increases year by year; Only nineteen ninety-five China's trade effluent (not comprising township and village enterprises) quantity discharged just is 22,300,000,000 tons; Contain ten thousand tons of COD770,1823 tons in heavy metal, 1132 tons of arsenic, 2504 tons of prussiates, 6366 tons of volatile phenols, 64341 tons of petroleum-type, 12,300,000,000 tons of discharged wastewater met the national standard only wherein, rest part; Especially the high-concentration hardly-degradable organic industrial sewage has caused serious pollution to environment, and the high-concentration hardly-degradable organic industrial sewage mainly is distributed in industries such as chemical industry, metallurgy, coking, dyestuff.
Refractory organic industrial sewage mainly comprises coking chemical waste water, paper waste, dyeing waste water etc.; Has the water quality complicacy; Hazardness is big, and COD and BOD are high, characteristics such as biodegradability difference; It has caused huge harm to environment, and the problem of environmental pollution of discharge has caused the great attention of national governments and environmental administration.Treatment process for refractory organic industrial sewage mainly contains physics method, biological process and chemical method both at home and abroad.
Conductor photocatalysis oxide treatment environmental pollutant are a kind of Pollution abatement technology of rising in recent years.Because the organism that semiconductor light-catalyst is difficult to degrade to a lot of biologies shows stronger degradation capability, and can the objectionable impurities in the environment be degraded to CO
2And H
2O, thereby receive extensive concern.In numerous semiconductor catalysts, titanium oxide can use the environmental protection photocatalyst that is considered to the best repeatedly with active high, stable, nontoxic, inexpensive, pollution-free, no burn into and obtain using widely.Yet titanium oxide also has the defective of himself: 1. its forbidden band broad (anatase titanium dioxide E
g=3.2eV, rutile-type E
g=3.02eV), can only excite with UV-light; 2. electronics and hole are easy compound, so catalytic efficiency (is low, particle is little, be difficult to separation, thereby have limited its application.Therefore, use multiple means to carry out modification, the doping of, dye sensitization compound, polymkeric substance, sulphating, noble metal decorated, non-metallic element and transition metal element doped etc. comprising semi-conductor.
In the process of wastewater treatment, the particle of photocatalyst titanium oxide is too little, is difficult to from reaction mixture, separate, and causes particle photocatalyst turnover rate big, reclaims and recycle the waste water after handling effectively.
Summary of the invention
In order to overcome the problems referred to above, the invention provides the magnetic that a kind of reusable edible, efficient are high, water quality is good and carry nano titanium oxide wastewater treatment and retrieving arrangement.
The objective of the invention is to realize through following technical scheme:
Magnetic carries nano titanium oxide wastewater treatment and retrieving arrangement, comprises mixing tank and light-catalyzed reaction chamber, and stirrer is equipped with at said mixing tank top; Top is provided with water inlet pipe, and the bottom is provided with rising pipe, and said rising pipe links to each other with the water inlet pipe of light-catalyzed reaction chamber through water pump; The light-catalyzed reaction chamber is a multilayered structure; Every layer of indoor top of light-catalyzed reaction is provided with ultraviolet light source, and the centre is a reaction compartment, and the bottom is provided with blast aeration pipe and magneticchuck; The blast aeration pipe links to each other with the gas blower that is located at the light-catalyzed reaction outside, and every layer of light-catalyzed reaction chamber also is provided with overflow pipe.
Further, said magneticchuck is a rectangular electro-magnetic chuck, and its magneticchuck suction intensity is 100N/cm
2
Further, two ends, said light-catalyzed reaction chamber are provided with extra electric field, and said extra electric field is made up of anode, negative electrode and direct supply.
Further, said anode is the graphite cake electrode, and negative electrode is the stainless steel plate electrode, and said direct supply voltage is 0～36V.
The present invention has following technique effect:
(1) the present invention adopts magnetic to carry nano titanium oxide, and promptly magnetic oxygenated iron material coats its surface for nuclear, nano titanium oxide; Nano magnetic material has huge specific surface area and good Separation and Recovery characteristics, with its carrier as photocatalyst, has so both kept the high catalytic activity of nano-photocatalyst; Can accomplish an after-applied suitable external magnetic field in reaction again and just can effectively separate fast, the magnetic after the separation carries nano titanium oxide and is adsorbed by the indoor rectangular electro-magnetic chuck of light-catalyzed reaction, wait the mixed waste water arrival of next batch process after; The rectangular electro-magnetic chuck outage; Rectangular electro-magnetic chuck magnetic disappears, and the magnetic that is adsorbed carries nano titanium oxide under the effect of little aeration, reacts with the waste water thorough mixing again; After finishing dealing with; The rectangular electro-magnetic chuck charging, magnetic carries nano titanium oxide and is adsorbed again, so circulation.The present invention has reduced the turnover rate of nano titanium oxide significantly, has solved the difficult problem of solid-liquid separation, has realized the recycling of resource, has reduced processing cost, has reached the purpose that economizes on resources, protects environment.
(2) multilayered structure is adopted in the light-catalyzed reaction chamber, has saved floor space, has improved the reaction efficiency of device.
(3) external electric field is set up in the light-catalyzed reaction chamber; Make light induced electron separate with the hole; Reduce the recombination probability in light induced electron and hole, make number of cavities increase, strengthen the efficient of magnet carried photocatalyst oxidation of organic compounds with strong oxidizing property; It is more abundant to make that simultaneously magnet carried photocatalyst and waste water mix, and improves the utilization ratio of magnet carried photocatalyst.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention.
Fig. 2 is the cut-away view of every layer of light-catalyzed reaction chamber of the present invention.
In the accompanying drawing: 1-mixing tank, 2-rising pipe, 3-stirrer, 4-water inlet pipe; 5-water pump, 6-direct supply, 7-anode, 8-water inlet pipe; 9-light-catalyzed reaction chamber, 10-pipeline, 11-overflow pipe, 12-negative electrode; 13-gas blower, 14-ultraviolet light source, 15-blast aeration pipe, 16-rectangular electro-magnetic chuck.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in Figure 1, a kind of magnetic carries nano titanium oxide wastewater treatment and retrieving arrangement, comprises mixing tank 1 and light-catalyzed reaction chamber 9.
Stirrer 3 is equipped with at said mixing tank top, and top is provided with water inlet pipe 4, and the bottom is provided with rising pipe 2, and said rising pipe 2 links to each other with the water inlet pipe 8 of light-catalyzed reaction chamber 9 through water pump 5.Get into mixing tank 1 after dyeing waste water conventional materialization of process and the biochemical treatment; The stirrer 3 at mixing tank 1 top constantly rotates; Mix, make waste water and magnetic carry the nano titanium dioxide photocatalyst thorough mixing, be transported to light-catalyzed reaction chamber 9 through water pump 5 then.
Like Fig. 1, shown in Figure 2, light-catalyzed reaction chamber 9 is a multilayered structure, and every layer of indoor top of light-catalyzed reaction is provided with ultraviolet light source 14, and ultraviolet light source 14 sends UV-light, and UV-light is used for exciting magnetic to carry the activity of nano titanium oxide.In the middle of every layer of light-catalyzed reaction chamber is reaction compartment, and the bottom is provided with blast aeration pipe 15 and rectangular electro-magnetic chuck 16, and rectangular electro-magnetic chuck 16 is used for adsorbing magnetic and carries nano titanium oxide after wastewater treatment.Blast aeration pipe 15 links to each other with the gas blower that is located at the light-catalyzed reaction outside 13 through pipeline 10.In the treating processes of waste water; Gas blower 13 starts, and blast aeration pipe 15 constantly produces little aeration, can not only make photocatalyst and waste water thorough mixing; And can improve dissolved oxygen; Electronics in conjunction with superfluous suppresses the compound of surperficial light induced electron and hole, further improves the photocatalysis efficiency that magnetic carries nano titanium oxide.Every layer of light-catalyzed reaction chamber also is provided with overflow pipe 11.
The two ends of light-catalyzed reaction chamber 9 also are provided with an extra electric field, and said extra electric field is made up of anode 7, negative electrode 12 and direct supply 6, and anode 7 adopts the graphite cake electrode, and negative electrode 12 adopts the stainless steel plate electrode, and said direct supply 6 voltages are 0～36V.Increase external electric field, make light induced electron separate, reduce the recombination probability in light induced electron and hole with the hole; Make number of cavities increase with strong oxidizing property; Strengthen the organic efficient of photocatalyst oxidizes, make simultaneously photocatalyst and waste water thorough mixing to make full use of activity of such catalysts.
Principle of work of the present invention is following: get into mixing tank 1 through the waste water after materialization processing and the biochemical treatment, carry the nano titanium dioxide photocatalyst thorough mixing with magnetic, be delivered to light-catalyzed reaction chamber 9 through water pump 5 then; The indoor blast aeration pipe 15 that is provided with of light-catalyzed reaction, little aeration that blast aeration pipe 15 produces during reaction carries nano titanium dioxide photocatalyst and the further thorough mixing of waste water, catalyzed degradation under the irradiation of ultraviolet source 14 with magnetic; After the reaction completion, blower 13 stops aeration, then with rectangular electro-magnetic chuck 16 energized; Magnetic carries nano titanium dioxide photocatalyst and is deposited on the rectangular electro-magnetic chuck 16 by rectangular electro-magnetic chuck 16 absorption; After absorption accomplished, the reaction chamber flowing water Valve was opened draining, wait next batch waste water to get into reaction chamber after; Break off the power supply of rectangular electro-magnetic chuck 16; The magnetic of rectangular electro-magnetic chuck 16 disappears, and then starts gas blower 13, and next batch waste water begins to handle again.Magnetic carries nano titanium dioxide photocatalyst all the time in the utilization of light-catalyzed reaction indoor circulation.In the time of need magnetic being carried nano titanium dioxide photocatalyst and separates with the waste water of finishing dealing with; The power supply that we connect electric moment shape magneticchuck 16 is that adsorbable magnetic carries nano titanium dioxide photocatalyst, and the waste water that thoroughly magnetic is carried after nano titanium dioxide photocatalyst and the advanced treatment separates.
The present invention has reduced the turnover rate of nano titanium oxide significantly, has solved the difficult problem of solid-liquid separation, has realized the recycling of resource, has reduced processing cost, has reached the purpose that economizes on resources, protects environment.In addition, the present invention adopts multilayered structure, has saved floor space, has improved the reaction efficiency of device.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (4)
1. magnetic carries nano titanium oxide wastewater treatment and retrieving arrangement, it is characterized in that: it comprises mixing tank and light-catalyzed reaction chamber, and stirrer is equipped with at said mixing tank top; Top is provided with water inlet pipe, and the bottom is provided with rising pipe, and said rising pipe links to each other with the water inlet pipe of light-catalyzed reaction chamber through water pump; The light-catalyzed reaction chamber is a multilayered structure; Every layer of indoor top of light-catalyzed reaction is provided with ultraviolet light source, and the centre is a reaction compartment, and the bottom is provided with blast aeration pipe and magneticchuck; The blast aeration pipe links to each other with the gas blower that is located at the light-catalyzed reaction outside, and every layer of light-catalyzed reaction chamber also is provided with overflow pipe.
2. magnetic according to claim 1 carries nano titanium oxide wastewater treatment and retrieving arrangement, it is characterized in that: said magneticchuck is a rectangular electro-magnetic chuck, and its magneticchuck suction intensity is 100N/cm
2
3. magnetic according to claim 1 carries nano titanium oxide wastewater treatment and retrieving arrangement, it is characterized in that: two ends, said light-catalyzed reaction chamber are provided with extra electric field, and said extra electric field is made up of anode, negative electrode and direct supply.
4. magnetic according to claim 3 carries nano titanium oxide wastewater treatment and retrieving arrangement, it is characterized in that: said anode is the graphite cake electrode, and negative electrode is the stainless steel plate electrode, and said direct supply voltage is 0～36V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102491210A CN102786177A (en) | 2012-07-19 | 2012-07-19 | Magnetic nanometer titanium dioxide wastewater treatment and recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102491210A CN102786177A (en) | 2012-07-19 | 2012-07-19 | Magnetic nanometer titanium dioxide wastewater treatment and recovery device |
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| CN102786177A true CN102786177A (en) | 2012-11-21 |
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| CN2012102491210A Pending CN102786177A (en) | 2012-07-19 | 2012-07-19 | Magnetic nanometer titanium dioxide wastewater treatment and recovery device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277279A (en) * | 2016-09-22 | 2017-01-04 | 常州大学怀德学院 | A kind of wastewater treatment equipment being beneficial to magnetic nano-catalyst separation and recovery |
| CN106622039A (en) * | 2016-12-12 | 2017-05-10 | 中北大学 | Reaction and separation integrated process and device for synthesizing poly-alpha-olefin (PAO) |
| CN106745488A (en) * | 2017-02-28 | 2017-05-31 | 诺曼利尔（青岛）环境能源技术有限公司 | The device of photocatalysis oxidation treatment waste water |
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| CN1426971A (en) * | 2001-12-17 | 2003-07-02 | 中国科学院广州能源研究所 | Method of separation and recovery of magnetic photocatalyst in waste water treatment and its installation |
| KR100452479B1 (en) * | 2003-09-01 | 2004-10-12 | 이회성 | A Wastewater Disposal System |
| CN1927732A (en) * | 2006-09-21 | 2007-03-14 | 北京科技大学 | Sewage treatment equipment of dispersing and recovering photocatalyst by magnetic field |
| US7404905B2 (en) * | 2004-08-06 | 2008-07-29 | Water Rite Limited | Water treatment system, apparatus and method |
| CN201136803Y (en) * | 2007-11-16 | 2008-10-22 | 北京科技大学 | TiO2/Fe3O4 photochemical catalytic sewage water treating device by micropore aeration |
| CN101691262A (en) * | 2009-10-21 | 2010-04-07 | 中国海洋石油总公司 | Optic-electronics integrated device for treating organic wastewater through catalytic oxidation |
| CN202705179U (en) * | 2012-07-19 | 2013-01-30 | 湖南先科环保有限公司 | Magnetic nano titanium dioxide wastewater treatment and recovery device |
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2012
- 2012-07-19 CN CN2012102491210A patent/CN102786177A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1426971A (en) * | 2001-12-17 | 2003-07-02 | 中国科学院广州能源研究所 | Method of separation and recovery of magnetic photocatalyst in waste water treatment and its installation |
| KR100452479B1 (en) * | 2003-09-01 | 2004-10-12 | 이회성 | A Wastewater Disposal System |
| US7404905B2 (en) * | 2004-08-06 | 2008-07-29 | Water Rite Limited | Water treatment system, apparatus and method |
| CN1927732A (en) * | 2006-09-21 | 2007-03-14 | 北京科技大学 | Sewage treatment equipment of dispersing and recovering photocatalyst by magnetic field |
| CN201136803Y (en) * | 2007-11-16 | 2008-10-22 | 北京科技大学 | TiO2/Fe3O4 photochemical catalytic sewage water treating device by micropore aeration |
| CN101691262A (en) * | 2009-10-21 | 2010-04-07 | 中国海洋石油总公司 | Optic-electronics integrated device for treating organic wastewater through catalytic oxidation |
| CN202705179U (en) * | 2012-07-19 | 2013-01-30 | 湖南先科环保有限公司 | Magnetic nano titanium dioxide wastewater treatment and recovery device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277279A (en) * | 2016-09-22 | 2017-01-04 | 常州大学怀德学院 | A kind of wastewater treatment equipment being beneficial to magnetic nano-catalyst separation and recovery |
| CN106622039A (en) * | 2016-12-12 | 2017-05-10 | 中北大学 | Reaction and separation integrated process and device for synthesizing poly-alpha-olefin (PAO) |
| CN106622039B (en) * | 2016-12-12 | 2019-08-30 | 中北大学 | The integrated reaction and separation technique and device of synthesizing poly alpha-olefin (PAO) |
| CN106745488A (en) * | 2017-02-28 | 2017-05-31 | 诺曼利尔（青岛）环境能源技术有限公司 | The device of photocatalysis oxidation treatment waste water |
| CN106745488B (en) * | 2017-02-28 | 2023-09-29 | 诺曼利尔（青岛）环境能源技术有限公司 | Device for treating waste water by photocatalytic oxidation |
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Application publication date: 20121121 |