CN104773810A - Catalytic ozonation device - Google Patents
Catalytic ozonation device Download PDFInfo
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- CN104773810A CN104773810A CN201510204623.5A CN201510204623A CN104773810A CN 104773810 A CN104773810 A CN 104773810A CN 201510204623 A CN201510204623 A CN 201510204623A CN 104773810 A CN104773810 A CN 104773810A
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Abstract
The invention provides a catalytic ozonation device, used for waste liquid treatment. The catalytic ozonation device comprises an oxidization tank, an ozone unit for providing ozone to the oxidization tank, and a catalytic unit arranged in the oxidization tank, wherein the oxidation tank is provided with a water inlet with a water inlet at the bottom and a water outlet higher than the water inlet. The catalytic ozonation device further comprises a mixing device used for enhancing the mixing of ozone and waste liquid. The catalytic ozonation device has the advantages that the mixing effect of ozone and waste liquid is enhanced by virtue of the mixing device; the oxidization capability of ozone is enhanced by the catalytic unit and therefore the utilization rate of ozone is improved, the use amount of ozone and a catalyst is reduced and the cost is lowered.
Description
Technical field
The present invention relates to a kind of device for catalyzing and oxidating ozone, particularly relate to the device for catalyzing and oxidating ozone that a kind of gas-liquid mixed is effective, ozone oxidation is effective, ozone utilization rate is high.
Background technology
The frequent outburst of and water contamination accident day by day in short supply along with water resources, people more pay attention to for water environment protection and water pollution control.Country promotes carrying out of energy-saving and emission-reduction work by formulating more strict sewage drainage standard, the qualified discharge of sewage and carry out recycling on this basis and become very urgent.
Ozone has very strong oxidation capacity, and in water treatment field, ozone is mainly used in the hardly degraded organic substance in oxygenolysis water, thus makes water body decolouring and deodorizing, reduces toxicity.In application process, the common problem that ozonation technology exists at present is: the first, and the mass transfer effect of ozone and water is poor, and the solubleness in water is low, thus causes oxidation efficiency low; Second, ozone oxidation has selectivity, vary with numerous organic speed of reaction, organism such as containing the unsaturated link(age) such as carbon-carbon double bond, carbon carbon triple bond, can by ozone Quick Oxidation, then slow with ozone reaction for the material such as saturated alkane, small molecular organic acid, water qualitative difference result in the unstable of oxidation effectiveness.Above-mentioned two aspect factors make the running cost of ozonation technology and invest higher, thus limit the application of technology to a certain extent.
Independent employing heterogeneous catalytic ozonation technical finesse waste water, the hydroxyl radical free radical that ozone can be utilized to produce under catalyst action carries out indirect oxidation, comparatively ozone oxidation ability is stronger for hydroxyl radical free radical oxidation capacity, and react quick non-selectivity, though the method can ensure certain treatment effect, reduce ozone consumption, owing to lacking efficient mixing wastewater with air system, thus there is catalyst levels large, the problem that investment cost is high.
In view of this, be necessary to be improved existing device for catalyzing and oxidating ozone, to solve the problem.
Summary of the invention
The object of the present invention is to provide the device for catalyzing and oxidating ozone that a kind of gas-liquid mixed is effective, ozone oxidation is effective, ozone utilization rate is high, catalyst levels is few.
For achieving the above object, the invention provides a kind of device for catalyzing and oxidating ozone, for liquid waste disposal, the catalytic unit that described device for catalyzing and oxidating ozone comprises oxidation pond, provides the ozone unit of ozone, is positioned at described oxidation pond to described oxidation pond, described oxidation pond is provided with and is positioned at the water-in of bottom, the water outlet higher than described water-in, and described device for catalyzing and oxidating ozone also comprises the mixing device strengthening ozone and mix with waste liquid.
As a further improvement on the present invention, described mixing device comprise be located in oxidation pond and mixing drum between water-in and water outlet, by air line to the air compressing device providing air in described mixing drum; Offer the through hole circulated inside and outside mixing drum for waste liquid bottom described mixing drum, described mixing drum top offers upper port.
As a further improvement on the present invention, the end being positioned at the described air line of described mixing drum is connected with the first microporous diffuser.
As a further improvement on the present invention, described first microporous diffuser is positioned at above described through hole.
As a further improvement on the present invention, described catalytic unit is located at outside described mixing drum, and catalytic unit volume is the 5%-50% of described oxidation pond volume.
As a further improvement on the present invention, described catalytic unit is between upper port and through hole.
As a further improvement on the present invention, described ozone unit comprises provides the ozone generating-device of ozone, one end is connected to described ozone generating-device and ozone is delivered to the ozone pipeline of oxidation pond, and the other end of described ozone pipeline is divided into the interior ozone pipeline stretched in described mixing drum, the outer ozone pipeline stretched into outside described mixing drum.
As a further improvement on the present invention, described interior ozone pipeline, outer ozone pipeline are connected to interior second microporous diffuser, outer second microporous diffuser.
As a further improvement on the present invention, described outer second microporous diffuser is positioned at above catalytic unit.
As a further improvement on the present invention, described ozone catalytic oxidation unit also comprises the back-purge system for the treatment of catalytic unit.
The invention has the beneficial effects as follows: device for catalyzing and oxidating ozone of the present invention enhances the mixed effect of ozone and waste liquid by mixing device, the oxidation capacity of ozone is improve by catalytic unit, and then improve the utilization ratio of ozone, reduce input amount and the catalyst levels of ozone, reduce cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of device for catalyzing and oxidating ozone of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, describe the present invention below in conjunction with the drawings and specific embodiments.
Refer to shown in Fig. 1, the invention provides a kind of device for catalyzing and oxidating ozone 100 for liquid waste disposal such as waste water, comprise oxidation pond 10, the ozone unit 20 of ozone is provided to described oxidation pond 10, strengthens the mixing device 30 of ozone and waste liquid mixed effect, is positioned at the catalytic unit 40 of described oxidation pond 10, the back-purge system 50 for the treatment of catalytic unit 40.The gas-liquid mixed effect of ozone and waste liquid can be improved by mixing device 30, the oxidation capacity of ozone can be improved by catalytic unit 40, improve ozone utilization rate further, reduce ozone input amount, reduce costs.
Described oxidation pond 10 is provided with and is positioned at the water-in 11 of bottom, the water outlet 12 higher than described water-in 11, the waste liquids such as waste water enter oxidation pond 10 from water-in 11, the ozone provided with ozone unit 20 fully reacts under mixing the katalysis being incorporated in catalytic unit 40, flow out from water outlet 12 after the pollutents such as removing or reduction organism, to be discharged or recycle.
Described mixing device 30 comprise be located in oxidation pond 10 and at least one mixing drum 31 between water-in 11 and water outlet 12, by air line 32 to the air compressing device 33 providing air in described mixing drum 31.The bottom of described mixing drum 31 offers for the through hole 312 of waste liquid in the inside and outside circulation of mixing drum 31, and described mixing drum 31 top offers upper port 311.Waste liquid enters mixing drum 31 from through hole 312 and flows out in oxidation pond 10 from upper port 311, makes waste liquid form internal recycle in oxidation pond 10, and then impels ozone can fully mix with waste liquid, can improve the utilization ratio of ozone.In addition, described upper port 311 is lower than water outlet 12, and the waste liquid therefore flowed out in mixing drum 31 just flows out from water outlet 12 after participation internal recycle is fully degraded.
Be provided with at least two mixing drums 31 in described oxidation pond 10, at least two mixing drum 31 intervals are arranged, and spacing distance enough makes waste liquid form internal recycle.
One end of described air line 32 is positioned at mixing drum 31, therefore namely air is mixed to form gas and liquid mixture with waste liquid after entering mixing drum 31, because the density of gas and liquid mixture is much smaller than the density before waste liquid mixing, therefore gas and liquid mixture rises, in mixing drum 31, form good turbulent state, make to be full of air in whole waste liquid.Gas and liquid mixture reaches upper port 311 rear section or whole air is separated with waste liquid, and waste liquid declines under gravity, then enters in mixing drum 31 from the bottom of mixing drum 31, forms internal recycle.
In order to strengthen the gas-liquid mixed effect of air with waste liquid further, the end being positioned at the described air line 32 of described mixing drum 31 is connected with at least one first microporous diffuser 34.Air is injected in the relatively heavier unmixed air of density or the less waste liquid of mixing air amount with higher speed, dispersion after the first microporous diffuser 34, can improve gas-liquid mixed effect substantially.
One end of described air line 32 is preferably placed at the top of the through hole 312 bottom mixing drum 31, and like this, air fully can mix with waste liquid in the process risen.Further, described first microporous diffuser 34 is positioned at above described through hole 312, gas and liquid mixture in mixing drum 31 makes the pressure outside mixing drum 31 internal ratio mixing drum 31 low after rising, the density of the waste liquid outside the density ratio mixing drum 31 of the mixed solution in mixing drum 31 is little, the waste liquid in mixing drum 31 can be impelled to enter in mixing drum 31 from the through hole 312 of bottom, thus waste liquid form internal recycle along mixing drum 31 is inside and outside in oxidation pond 10.When influent quality rangeability is larger, improve internal circulating load, to reduce the impact to device for catalyzing and oxidating ozone 100 by increasing air supply.
Described catalytic unit 40 is located at outside described mixing drum 31, and near described through hole 312 between upper port 311 and through hole 312; Particularly, described catalytic unit 40 is surrounded on outside mixing drum 31 described at least one; Catalytic unit 40 volume is the 5%-50% of described oxidation pond 10 volume.Described catalytic unit 40 comprises bed course 41, be positioned at Catalytic Layer 42 above described bed course 41, has the catalyzer of O3 catalytic oxidation in described Catalytic Layer 42.
Described ozone unit 20 comprises provides the ozone generating-device 21 of ozone, one end is connected to described ozone generating-device 21 and ozone is delivered to the ozone pipeline 22 of oxidation pond 10.The other end of described ozone pipeline 22 is divided into the interior ozone pipeline 221 stretched in described mixing drum 31, the outer ozone pipeline 222 stretched into outside described mixing drum 31.In the present invention, ozone generating-device 21 refers to the device that can provide ozone, comprises the ozonizer preparing ozone, the steel cylinder etc. storing ozone.
In order to strengthen the mixed effect of ozone and waste liquid, described interior ozone pipeline 221, outer ozone pipeline 222 are connected to interior second microporous diffuser 231, outer second microporous diffuser 232.Ozone is injected in waste liquid with higher speed, dispersion after interior second microporous diffuser 231, outer second microporous diffuser 232, can strengthen gas-liquid mixed effect, improves ozone oxidation effect, saves ozone input amount, reduces costs.In the present embodiment, in described, the second microporous diffuser 231 is arranged near the first microporous diffuser 34, and described outer second microporous diffuser 232 is positioned at above the Catalytic Layer 42 of catalytic unit 40.
Ozone out enters in mixing drum 31 afterwards from interior second microporous diffuser 231, the gas and liquid mixture formed with air-waste liquid acutely mixes, form the relatively low ozone-air-waste liquid gas and liquid mixture of density and rise, in mixing process, ozone is well-dispersed in waste liquid, and react with the hardly degraded organic substance in waste liquid, realize the oxidation of waste liquid.Ozone-air-waste liquid gas and liquid mixture can increase the contact area of ozone and waste liquid, improves ozone utilization rate.
After ozone-air-waste liquid gas and liquid mixture rises to upper port 311, after part or all of air and ozone depart from from waste liquid, waste liquid flows downward under gravity from mixing drum 31, and again enter in mixing drum 31 from through hole 312, form internal recycle stream, add the duration of contact of ozone and waste liquid.
Meanwhile, in the process that waste liquid flows downward from mixing drum 31 and from outer second microporous diffuser 232 ozone gas counter current contact out, under high velocity impact, make ozone solution in waste liquid, form ozone-waste liquid mixed solution.This mixed solution is downwards in the process of Catalytic Layer 42, ozone produces the stronger hydroxyl radical free radical of oxidation capacity under the katalysis of catalyzer, be oxidized the hardly degraded organic substance in waste liquid by hydroxyl radical free radical further, realize reoxidizing of waste liquid by catalytic ozonation.When waste liquid is by arriving bottom oxidation pond 10 after catalytic unit 40, then being entered in mixing drum 31 by through hole 312, completing the oxidation-catalytic oxidation process of one-period.
After waste liquid enters oxidation pond 10 from water-in 11, through constantly oxidation-catalyzed oxidation, the hardly degraded organic substance in waste liquid is constantly degraded.Simultaneously in working cycle, the part waste liquid after degraded, from upper port 311 upper reaches, is finally discharged from water outlet 12, to be discharged or recycle.
Described back-purge system 50 comprises the back flushing rising pipe 53 being arranged at back flushing gas distribution pipe 51 below Catalytic Layer 42 and back flushing water distributor 52, oxidation pond top.After operation for some time, unlatching back flushing gas distribution pipe 51 and back flushing water distributor 52 pairs of Catalytic Layer 42 carry out back flushing, remove the impurity of catalyst surface, to ensure the stability of catalytic oxidation effect.
When adopting above-mentioned device for catalyzing and oxidating ozone 100 to carry out liquid waste disposal: waste liquid enters oxidation pond 10 from water-in 11 continuously; Open air compressing device 33, pressurized air enters in mixing drum 31 through air line 32, first microporous diffuser 34, and air and waste liquid form air-waste liquid mixed solution and rise and form good turbulent state in described mixing drum 31 at a high speed in mixing drum 31; Start ozone unit 20, the ozone that ozone generating-device 21 provides enters in mixing drum 31 through ozone pipeline 22, interior second microporous diffuser 231, acutely mix with the air in mixing drum 31-waste liquid mixed solution and rise, in mixing process, ozone fully disperses, is dissolved in waste liquid, react with the hardly degraded organic substance in waste liquid, realize waste liquid oxidation; After ozone-air-waste liquid mixed solution rises to the top of mixing drum 31, part ozone is therefrom separated with air, waste liquid flows downward and forms ozone-waste liquid mixed solution with by outer second microporous diffuser 232 ozone high velocity impact out from mixing drum 31, again enter mixing drum 31 from through hole 312 after realizing the catalyzed oxidation of waste liquid, in oxidation pond 10, form internal recycle.
In sum, device for catalyzing and oxidating ozone 100 of the present invention enhances the mixed effect of ozone and waste liquid by mixing device 30, improve the oxidation capacity of ozone, and then improves the utilization ratio of ozone, reduces the input amount of ozone and catalyst levels and cost.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a device for catalyzing and oxidating ozone, for liquid waste disposal, the catalytic unit that described device for catalyzing and oxidating ozone comprises oxidation pond, provides the ozone unit of ozone, is positioned at described oxidation pond to described oxidation pond, described oxidation pond is provided with and is positioned at the water-in of bottom, the water outlet higher than described water-in, it is characterized in that: described device for catalyzing and oxidating ozone also comprises the mixing device strengthening ozone and mix with waste liquid.
2. device for catalyzing and oxidating ozone according to claim 1, is characterized in that: described mixing device comprise be located in oxidation pond and mixing drum between water-in and water outlet, by air line to the air compressing device providing air in described mixing drum; Offer the through hole circulated inside and outside mixing drum for waste liquid bottom described mixing drum, described mixing drum top offers upper port.
3. device for catalyzing and oxidating ozone according to claim 2, is characterized in that: the end being positioned at the described air line of described mixing drum is connected with the first microporous diffuser.
4. device for catalyzing and oxidating ozone according to claim 3, is characterized in that: described first microporous diffuser is positioned at above described through hole.
5. device for catalyzing and oxidating ozone according to claim 2, is characterized in that: described catalytic unit is located at outside described mixing drum, and catalytic unit volume is the 5%-50% of described oxidation pond volume.
6. device for catalyzing and oxidating ozone according to claim 2, is characterized in that: described catalytic unit is between upper port and through hole.
7. device for catalyzing and oxidating ozone according to claim 1, it is characterized in that: described ozone unit comprises provides the ozone generating-device of ozone, one end is connected to described ozone generating-device and ozone is delivered to the ozone pipeline of oxidation pond, the other end of described ozone pipeline is divided into the interior ozone pipeline stretched in described mixing drum, the outer ozone pipeline stretched into outside described mixing drum.
8. device for catalyzing and oxidating ozone according to claim 7, is characterized in that: described interior ozone pipeline, outer ozone pipeline are connected to interior second microporous diffuser, outer second microporous diffuser.
9. device for catalyzing and oxidating ozone according to claim 8, is characterized in that: described outer second microporous diffuser is positioned at above catalytic unit.
10. device for catalyzing and oxidating ozone according to claim 1, is characterized in that: described ozone catalytic oxidation unit also comprises the back-purge system for the treatment of catalytic unit.
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| CN201510204623.5A CN104773810B (en) | 2015-04-27 | 2015-04-27 | Catalytic ozonation device |
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| CN201510204623.5A CN104773810B (en) | 2015-04-27 | 2015-04-27 | Catalytic ozonation device |
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| CN104773810B CN104773810B (en) | 2017-04-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186279A (en) * | 2016-09-05 | 2016-12-07 | 苏州清然环保科技有限公司 | Continuous operating device for catalyzing and oxidating ozone and method |
| CN110182935A (en) * | 2019-06-12 | 2019-08-30 | 河南小威环境科技有限公司 | A kind of catalytic ozonation reaction method and device |
| CN110272113A (en) * | 2019-07-18 | 2019-09-24 | 上海明诺环境科技有限公司 | A kind of internal-circulation ozone catalysis oxidation sewage-treatment plant |
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| CN101913694A (en) * | 2010-08-19 | 2010-12-15 | 南京大学 | Internal-circulation ozone contact reaction tower for advanced treatment of industrial waste water |
| CN201694885U (en) * | 2010-08-20 | 2011-01-05 | 天津安邦科技有限公司 | Ozone catalytic oxidation and scrubbing device and water treatment system |
| CN204281399U (en) * | 2014-12-12 | 2015-04-22 | 北京格兰特膜分离设备有限公司 | Air lift circulation ozone catalytic oxidation reaction device |
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2015
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Patent Citations (4)
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| JPH09253672A (en) * | 1996-03-27 | 1997-09-30 | Ngk Insulators Ltd | Method and apparatus for treatment of organic wastewater |
| CN101913694A (en) * | 2010-08-19 | 2010-12-15 | 南京大学 | Internal-circulation ozone contact reaction tower for advanced treatment of industrial waste water |
| CN201694885U (en) * | 2010-08-20 | 2011-01-05 | 天津安邦科技有限公司 | Ozone catalytic oxidation and scrubbing device and water treatment system |
| CN204281399U (en) * | 2014-12-12 | 2015-04-22 | 北京格兰特膜分离设备有限公司 | Air lift circulation ozone catalytic oxidation reaction device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186279A (en) * | 2016-09-05 | 2016-12-07 | 苏州清然环保科技有限公司 | Continuous operating device for catalyzing and oxidating ozone and method |
| CN106186279B (en) * | 2016-09-05 | 2023-07-21 | 苏州清然环保科技有限公司 | Continuous operation type ozone catalytic oxidation device and method |
| CN110182935A (en) * | 2019-06-12 | 2019-08-30 | 河南小威环境科技有限公司 | A kind of catalytic ozonation reaction method and device |
| CN110272113A (en) * | 2019-07-18 | 2019-09-24 | 上海明诺环境科技有限公司 | A kind of internal-circulation ozone catalysis oxidation sewage-treatment plant |
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| CN104773810B (en) | 2017-04-12 |
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