CN201770512U - Device for decomposing pollutants by ultraviolet catalytic wet oxidation - Google Patents
Device for decomposing pollutants by ultraviolet catalytic wet oxidation Download PDFInfo
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- CN201770512U CN201770512U CN2010202466179U CN201020246617U CN201770512U CN 201770512 U CN201770512 U CN 201770512U CN 2010202466179 U CN2010202466179 U CN 2010202466179U CN 201020246617 U CN201020246617 U CN 201020246617U CN 201770512 U CN201770512 U CN 201770512U
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Abstract
The utility model discloses a device for decomposing pollutants by ultraviolet catalytic wet oxidation, which comprises a reaction tank for containing wastewater. An ultraviolet light source is arranged in the reaction tank. An aeration device is arranged at the bottom of the reaction tank. A medicament storage tank used for storing a catalyst is arranged above the reaction tank. A medicament feeding device communicated with the medicament storage tank is arranged in the reaction tank. A control device and a measuring cell are arranged in the reaction tank. A level gauge is arranged outside the reaction tank. In the device, ultraviolet light, an oxidant and the catalyst are introduced into a reaction system, and under the synergistic catalytic oxidation function of the ultraviolet light, the oxidant and the catalyst, wet oxidation reaction can be performed under the mild conditions of normal temperature and normal pressure. Compared with a conventional catalytic wet oxidation method, the device can decompose the organic pollutants in the toxic and harmful wastewater with high concentration into harmless components consisting of CO2, water and the like under the temperature of 25 to 80 DEG C and the normal pressure by utilizing own high oxidizing property, and achieve the CODcr removal rate of many kinds of treated representative high-concentration organic wastewater of over 95 percent.
Description
Technical field
The utility model discloses a kind of oxidation unit, and particularly a kind of Catalytic Wet Oxidation device that adopts ultraviolet to strengthen is used for sewage treatment area, particularly is applied to the removal of organic pollutant in the high density poisonous and harmful waste water.
Background technology
Along with the develop rapidly of industry such as oil, chemical industry and pharmacy, the handling problem of high-concentration hardly-degradable waste water becomes the focus and the difficult point of countries in the world research.At present, trade effluent has had new characteristics: Pollutant levels are higher on the one hand; Pollutant component is more complicated on the other hand, and this just causes traditional pollutent method of wastewater treatment efficiency to reduce, and adopts the pollutent waste water of handling high density, difficult degradation such as methods such as Coagulation Method, biochemical process, absorption method, physico-chemical process, is difficult to reach emission standard.Therefore, the research of new and effective wastewater processing technology is extremely urgent.
Wet type air oxidation technology (WetAir Oxidation, be called for short WAO) be under high temperature (150-350 ℃) and high pressure (0.5-20MPa), as oxygenant, is the chemical process of inorganicss such as carbonic acid gas and water or organic molecule with the organic pollutant oxygenolysis with air or pure oxygen.Nineteen forty-four, the F.J.Zimmermann of the U.S. proposed the WAO technology, also claimed the Annemarie Zimmermann method.First WAO being used to handle papermaking black liquor wastewater in 1958, is 150-350 ℃ in temperature of reaction, and pressure is under the 5-20MPa condition, waste water COD
CrDegradation rate reaches more than 90%.
Although WAO is the technology of a kind of effective processing high density, poisonous and harmful, bio-refractory organic waste water, but because it carries out under High Temperature High Pressure, inevitably have a lot of weak points: (1) because reaction requires to carry out under high temperature, highly compressed condition, operation easier is big, poor stability; (2) require reactor material to have high temperature resistant, highly compressed characteristic, not only make the device systems one-time investment big, and the selection of the system of giving causes difficulty; (3) owing to must keep the reaction conditions of high temperature and high pressure, running cost costliness in the reaction.Higher reaction pressure also can increase the power consumption of air compressor machine in addition, increases the regular job expense of this process; 4) even under very high temperature, to some organism such as polychlorobiphenyl, the removal effect of small molecules carboxylic acid is also undesirable, is difficult to accomplish complete oxidation.Therefore, for the improvement of traditional WAO technology with improve extremely important.
Because there is above defective in the WAO technology, along with the progress of pollutent wastewater processing technology, based on the WAO technology, some new wet-type oxidation degradation methods have appearred again, catalyzer is incorporated in this field, formed a kind of new technology---Catalytic Wet Oxidation technology (Catalytic Wet Oxidation is called for short CWO), by adding suitable catalyzer in reaction process, temperature of reaction and pressure are reduced, can effectively improve oxidative decomposition capacity, fast reaction speed shortens the reaction times.Catalytic wet hydrogen peroxide oxidation technology (CatalyticWet Peroxide Oxidation is called for short CWPO) is on the basis of catalytic wet air oxidation process, and oxygenant is replaced by H
2O
2Waste water is degraded.Though catalytic wet hydrogen peroxide oxidation technology has improved the waste water degradation rate greatly, but still need under the severe condition of High Temperature High Pressure, to carry out, do not avoid the fatal shortcoming of wet oxidation technology fully, make this The Application of Technology and popularization be subjected to very big restriction.
Summary of the invention
Carry out under the condition at the above-mentioned wet oxidation Technology Need High Temperature High Pressure of mentioning of the prior art, the shortcoming that requirement condition is relatively harsher, the utility model provides a kind of device that typically is used for wet oxidation, it utilizes ultraviolet ray as intensified condition, add catalyzer and carry out wet oxidation, this high-level oxidation technology can be carried out at normal temperatures and pressures.
In order to solve the problem of conventional catalyst wet oxidation technology degradation condition harshness, ultraviolet catalytic wet-type oxidation technology (UV-Catalytic Wet Oxidation Process is called for short UV-CWOP) has been proposed.Process characteristic is by introduce UV-light, oxygenant and catalyzer (one or more appraise at the current rate transition metal or metal oxide) in reaction system, with their concerted catalysis oxygenizement, under the mild conditions of normal temperature and pressure, organic pollutant in the high density poisonous and harmful waste water is resolved into CO
2With harmless composition such as water, and deodorizing simultaneously, decolouring and sterilization and disinfection, thereby reach the purpose of purifying liquid waste.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of device of degrading pollutants through ultraviolet catalytic wet oxidation, this device comprises the reaction tank that splendid attire waste water is used, be provided with ultraviolet source in the reaction tank, the reaction tank bottom is provided with aerating apparatus, the reaction tank top is provided with and is used for the medicine storage tank that storage catalyst is used, and also is provided with the chemicals dosing plant that is communicated with the medicine storage tank in the reaction tank, is provided with control device in the reaction tank, be provided with measuring cell in the reaction tank, the reaction tank outside is equipped with the liquid level instrument.
Described reaction tank material adopts corrosion resistant material.
Described ultraviolet source is low pressure ultraviolet lamp or middle pressure ultraviolet lamp.
Also comprise in the described device being used for the panel that parameter shows and imports, panel is connected with control device.
Described panel adopts the complete intelligent control panel of PLC.
The beneficial effects of the utility model are: (1) needs to compare with the reaction conditions of high pressure (0.5-20MPa) at high temperature (150-350 ℃) with the conventional catalyst wet oxidation process, the method for oxidation that employing the utility model carries out is because the introducing of ultraviolet ray and catalyzer can make wet oxidation reaction carry out under the mild conditions of normal temperature and pressure.
(2) catalyzer that is adopted in the method for oxidation that adopts the utility model to realize is the transiting state metals that appraise at the current rate such as Cu, Fe, Mn, Zn, is the common industrial catalystic material, and wide material sources are cheap.After catalyzed reaction finished, particle shape catalyzer was realized separating of catalyzer and waste water easily, can reclaim it, was difficult for running off.
(3) oxygenant that is adopted in the method for oxidation that adopts the utility model to realize is one or more the combination in air, oxygen, ozone, hydrogen peroxide, the Peracetic Acid, and low price is easy to use.In addition because the adding of UV-light makes the utilization ratio of oxygenant obviously improve, so with traditional Catalytic Wet Oxidation reacting phase ratio, the throwing amount of having saved oxygenant.
(4) introduce UV-light and catalyzer in the reaction system simultaneously, utilize their concerted catalysis oxygenizement, organic pollutant in the high density poisonous and harmful waste water is resolved into harmless compositions such as CO2 and water, and have the effect of deodorizing, decolouring and sterilization and disinfection simultaneously.
To sum up, the method for oxidation technology that adopts the utility model to carry out have reaction temperature and, processing efficiency height, degraded thoroughly, the technology cleaning is green and save plurality of advantages such as the energy, has very high practical value, have a extensive future.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is the utility model structural principle synoptic diagram.
Among the figure, 1-reaction tank, 2-ultraviolet source, 3-aerating apparatus, 4-chemicals dosing plant, 5-medicine storage tank, 6-housing, 7-panel, 8-measuring cell, 9-liquid level instrument, 10-water-in, 11-water outlet.
Embodiment
Present embodiment is the utility model preferred implementation, and other all its principles are identical with present embodiment or proximate with basic structure, all within the utility model protection domain.
Please referring to accompanying drawing 1, the utility model main body is a reaction tank 1, and reaction tank 1 is used for splendid attire waste water and waste water is handled, in the present embodiment, reaction tank 1 adopts corrosion resistant material to process, and makes it be difficult for by the corrosion of the chemical substance in the waste water and has certain heat resistance.Be provided with ultraviolet source 2 in the reaction tank 1, in the present embodiment, ultraviolet source 2 is low pressure ultraviolet lamp or middle pressure ultraviolet lamp.Reaction tank 1 bottom is provided with aerating apparatus 3, the waste water that is used in reaction tank 1 feeds oxidation gas, as air, oxygen etc., reaction tank 1 top is provided with and is used for the medicine storage tank 5 that storage catalyst is used, be placed with catalyzer in the medicine storage tank 5, also be provided with chemicals dosing plant 4 in the reaction tank 1, can be by chemicals dosing plant 4 with in the waste water in the input of the catalyzer in the medicine storage tank 5 reaction tank 1.Reaction tank 1 is provided with housing 6, in the present embodiment, adopt PLC as control device, PLC is arranged in the housing 6, and for easy to operate, reaction tank 1 is provided with panel 7, PLC in panel 7 and the housing 6 is connected, can carry out parameter input and parameter demonstration etc. by panel 7, in the present embodiment, panel 7 adopts the complete intelligent control panel of PLC.Be provided with measuring cell 8 in the reaction tank 1, can be by meter etc. at measuring cell 8 places to reaction pressure, temperature, pH value, redox potential, the isoparametric on-line monitoring constantly of specific conductivity, reaction tank 1 outside is equipped with liquid level instrument 9, by the constantly monitoring of liquid level instrument 9 realizations to liquid level.
The ultraviolet catalytic wet oxidation method that adopts the utility model to carry out, method for oxidation comprises following reaction conditions:
A, the pH value of waste water is adjusted to certain limit according to the characteristic of waste water characteristic and catalyzer, according to the catalyst type difference, it is adjusted to a certain numerical value between the 3-10, and this numerical value is by the pH stability and the interval decision of preferable catalytic activity pH of catalyst themselves;
The original COD of B, the pending waste water of foundation
CrValue adds oxygenant, and in the present embodiment, oxidant content is by COD in the waste water
CrValue is calculated 0.5-1.1 times of the theoretical consumption of gained, in addition, complexity according to the degraded of contaminated wastewater thing, the oxygenant consumption is also different, when it more needs more oxygenant during difficult degradation, in the present embodiment, oxygenant can be selected one or more the combination in air, oxygen, ozone, hydrogen peroxide, the Peracetic Acid for use;
C, add catalyzer according to oxidant content, the mol ratio of catalyzer and oxygenant is 1: 5-1: between 200, in the present embodiment, catalyzer is the combination of one or more appraise at the current rate transiting state metal ion or oxide compounds, the transiting state metal that appraises at the current rate specifically can be selected copper, iron, manganese or zinc for use, in the present embodiment, catalyzer can adopt a kind of as carrier in aluminum oxide, titanium dioxide, silica gel or the gac;
D, UV-irradiation (in the present embodiment, promptly opening ultra-violet lamp) is arranged;
E, temperature of reaction are 25 ℃-80 ℃;
F, reaction pressure are normal pressure;
G, reaction times are 5-300min.
In the above-mentioned method for oxidation, according to the difference of catalyzer form, reaction can be a homogeneous phase or heterogeneous.When catalyzer adopted metal oxide, reaction system was heterogeneous, promptly contains suspended solids in the reaction soln; When catalyzer adopted metal ion, reaction system was a homogeneous phase, does not promptly contain suspended solids in the reaction soln.
In the method for the present invention, pass through before the qualified discharge to filter or coagulating sedimentation Separation and Recovery catalyzer.。
Claims (5)
1. the device of a degrading pollutants through ultraviolet catalytic wet oxidation, it is characterized in that: described device comprises the reaction tank that splendid attire waste water is used, be provided with ultraviolet source in the reaction tank, the reaction tank bottom is provided with aerating apparatus, the reaction tank top is provided with and is used for the medicine storage tank that storage catalyst is used, and also is provided with the chemicals dosing plant that is communicated with the medicine storage tank in the reaction tank, is provided with control device in the reaction tank, be provided with measuring cell in the reaction tank, the reaction tank outside is equipped with the liquid level instrument.
2. device according to claim 1 is characterized in that: described reaction tank material adopts corrosion resistant material.
3. device according to claim 1 is characterized in that: described ultraviolet source is low pressure ultraviolet lamp or middle pressure ultraviolet lamp.
4. device according to claim 1 is characterized in that: also comprise in the described device being used for the panel that parameter shows and imports, panel is connected with control device.
5. device according to claim 4 is characterized in that: described panel adopts the complete intelligent control panel of PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202466179U CN201770512U (en) | 2010-07-05 | 2010-07-05 | Device for decomposing pollutants by ultraviolet catalytic wet oxidation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202466179U CN201770512U (en) | 2010-07-05 | 2010-07-05 | Device for decomposing pollutants by ultraviolet catalytic wet oxidation |
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| CN201770512U true CN201770512U (en) | 2011-03-23 |
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| CN2010202466179U Expired - Lifetime CN201770512U (en) | 2010-07-05 | 2010-07-05 | Device for decomposing pollutants by ultraviolet catalytic wet oxidation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863526A (en) * | 2010-07-05 | 2010-10-20 | 李朝林 | Method and device for degrading pollutants through ultraviolet catalytic wet oxidation |
| CN106082421A (en) * | 2016-07-11 | 2016-11-09 | 浙江奇彩环境科技股份有限公司 | A kind of overflow-type photo catalysis reactor and method of wastewater treatment |
-
2010
- 2010-07-05 CN CN2010202466179U patent/CN201770512U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863526A (en) * | 2010-07-05 | 2010-10-20 | 李朝林 | Method and device for degrading pollutants through ultraviolet catalytic wet oxidation |
| CN106082421A (en) * | 2016-07-11 | 2016-11-09 | 浙江奇彩环境科技股份有限公司 | A kind of overflow-type photo catalysis reactor and method of wastewater treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN DOHILL TECHNOLOGY CO., LTD. Effective date: 20120816 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 518055 SHENZHEN, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120816 Address after: 518055 Guangdong city of Shenzhen province Nanshan District Shekou Industrial Zone D Dong Rong Cun Wei's Building 2 floor room 217 Patentee after: SHENZHEN DAOHUI TECHNOLOGY CO., LTD. Address before: 518000 Guangdong city in Shenzhen Province, Nanshan District City Xili University of Harbin Institute of Technology campus E415 Patentee before: Li Chaolin |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 518101 Guangdong, Baoan District, Xixiang street, Xixiang Avenue, No. 288, the source of the headquarters of the economic building on the ground floor, room seventeen, Feng Hua, room 1702 Patentee after: Shenzhen Environmental Protection Technology Co., Ltd. Address before: 518055 Guangdong city of Shenzhen province Nanshan District Shekou Industrial Zone D Dong Rong Cun Wei's Building 2 floor room 217 Patentee before: SHENZHEN DAOHUI TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170516 Address after: 523808 Guangdong Province, Dongguan Songshan Lake high tech Industrial Development Zone No. 9 Keyuan pine floor 411A room Patentee after: Dongguan Dao Hui environmental protection Polytron Technologies Inc Address before: 518101 Guangdong, Baoan District, Xixiang street, Xixiang Avenue, No. 288, the source of the headquarters of the economic building on the ground floor, room seventeen, Feng Hua, room 1702 Patentee before: Shenzhen Environmental Protection Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
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| CX01 | Expiry of patent term |