CN104773810B - Catalytic ozonation device - Google Patents
Catalytic ozonation device Download PDFInfo
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- CN104773810B CN104773810B CN201510204623.5A CN201510204623A CN104773810B CN 104773810 B CN104773810 B CN 104773810B CN 201510204623 A CN201510204623 A CN 201510204623A CN 104773810 B CN104773810 B CN 104773810B
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- ozone
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- waste liquid
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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, more particularly to a kind of gas-liquid mixed effect is good, ozone oxidation effect
The really high device for catalyzing and oxidating ozone of good, ozone utilization rate.
Background technology
The frequent outburst of increasingly in short supply and water contamination accident with water resource, people control for water environment protection and water pollution
Reason is more paid attention to.The development that country promotes energy-saving and emission-reduction to work by formulating more strict sewage drainage standard, sewage
Qualified discharge and on this basis development are recycled and have become very urgent.
Ozone has very strong oxidability, and in water treatment field, ozone is mainly used in the difficult degradation in oxidation Decomposition water
Organic substance, so that water body decolouring and deodorizing, reduces toxicity.In application process, what ozonation technology presently, there are generally asks
Topic is：First, ozone is poor with the mass transfer effect of water, and the dissolubility in water is low, so as to cause oxidation efficiency low；Second, it is smelly
Oxygen oxidation has selectivity, varies with the reaction rate of numerous Organic substances, such as containing carbon-carbon double bond, triple carbon-carbon bonds etc. no
The Organic substance of saturated bond, can by ozone Quick Oxidation, and for the materials such as saturated alkane, small molecular organic acid then with ozone reaction
Slowly, water qualitative difference result in the unstability of oxidation effectiveness.Above-mentioned two aspects factor causes the operation of ozonation technology
Cost and investment are higher, so as to limit the application of technology to a certain extent.
Heterogeneous catalytic ozonation technical finesse waste water is individually adopted, can utilize what ozone was produced under catalyst action
Hydroxyl radical free radical carries out indirect oxidation, and hydroxyl radical free radical oxidability is higher compared with ozone oxidation ability, and reacts quickly without selection
Property, though the method can guarantee that certain treatment effect, ozone consumption is reduced, due to lacking efficient mixing wastewater with air system,
Thus there is catalyst amount greatly, the high problem of investment cost.
In view of this, it is necessary to which existing device for catalyzing and oxidating ozone is improved, to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of gas-liquid mixed effect is good, ozone oxidation effect is good, ozone utilization rate is high, urge
The few device for catalyzing and oxidating ozone of agent consumption.
For achieving the above object, the invention provides a kind of device for catalyzing and oxidating ozone, described for liquid waste processing
Device for catalyzing and oxidating ozone is including oxidation pond, the ozone unit to oxidation pond offer ozone, in the oxidation pond
Catalyst unit, the oxidation pond is provided with the water inlet positioned at bottom, higher than the outlet of the water inlet, the ozone catalytic oxygen
Makeup to put also include strengthens the mixing arrangement that ozone mixes with waste liquid;The mixing arrangement includes in oxidation pond and is located at
Mixing drum between water inlet and outlet, by air line to the air compressing device that air is provided in the mixing drum；It is described
Mixing drum bottom offers the through hole circulated inside and outside mixing drum for waste liquid, and the mixing drum top offers upper port;It is located at
One end of the air line in the mixing drum is located at through hole top;The ozone unit includes providing ozone
Ozone generating-device, one end are connected to the ozone generating-device and ozone are delivered to into the ozone pipeline of oxidation pond, described smelly
The other end of oxygen pipeline is divided into the interior ozone pipeline stretched in the mixing drum, the outer ozone pipeline stretched into outside the mixing drum；
The interior ozone pipeline, outer ozone pipeline are connected to interior second microporous diffuser, outer second microporous diffuser；Described outer the
Two microporous diffusers are located at catalyst unit top.
As a further improvement on the present invention, the end of the air line in the mixing drum is connected with first
Microporous diffuser.
As a further improvement on the present invention, first microporous diffuser is located at through hole top.
As a further improvement on the present invention, outside the mixing drum, catalyst unit volume is institute to the catalyst unit
State the 5%-50% of oxidation pond volume.
As a further improvement on the present invention, the catalyst unit is located between upper port and through hole.
As a further improvement on the present invention, the ozone catalytic oxidation unit is also included for processing the anti-of catalyst unit
Flusher.
The invention has the beneficial effects as follows：The device for catalyzing and oxidating ozone of the present invention is enhanced ozone and is given up by mixing arrangement
The mixed effect of liquid, by catalyst unit the oxidability of ozone is improve, and then improves the utilization rate of ozone, is reduced smelly
The input amount and catalyst amount of oxygen, reduces cost.
Description of the drawings
Fig. 1 is the structural representation of the device for catalyzing and oxidating ozone of the present invention.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings with specific embodiment pair
The present invention is described in detail.
Refer to shown in Fig. 1, the present invention provides a kind of device for catalyzing and oxidating ozone 100 for liquid waste processings such as waste water,
Including oxidation pond 10, the ozone unit 20 to the offer ozone of the oxidation pond 10, strengthening the mixing of ozone and waste liquid mixed effect
Device 30, the catalyst unit 40 in the oxidation pond 10, the back purge system 50 for processing catalyst unit 40.By mixed
Attach together and put 30 and can improve the gas-liquid mixed effect of ozone and waste liquid, the oxidability of ozone can be improved by catalyst unit 40,
Ozone utilization rate is further improved, ozone input amount, reduces cost is reduced.
The oxidation pond 10 is provided with the water inlet 11 positioned at bottom, the outlet 12 higher than the water inlet 11, waste water etc.
Waste liquid enters oxidation pond 10 from water inlet 11, and the ozone provided with ozone unit 20 mixes the catalytic action for being incorporated in catalyst unit 40
Under fully reacted, remove or reduce to flow out from outlet 12 after the pollutant such as Organic substance, it is to be discharged or recycle.
The mixing arrangement 30 includes in the oxidation pond 10 and between water inlet 11 and outlet 12 at least one
Individual mixing drum 31, the air compressing device 33 that offer air in the mixing drum 31 is provided by air line 32.The mixing drum 31
Bottom offers the through hole 312 for waste liquid in the inside and outside circulation of mixing drum 31, and the top of the mixing drum 31 offers upper port 311.
Waste liquid is flowed out in oxidation pond 10 into mixing drum 31 from through hole 312 from upper port 311 so that waste liquid is formed in oxidation pond 10
Interior circulation, and then promote ozone to be sufficiently mixed with waste liquid, the utilization rate of ozone can be improved.In addition, the upper port 311 is low
In outlet 12, therefore the waste liquid flowed out from mixing drum 31 is participating in just being flowed from outlet 12 after interior circulation is fully degraded
Go out.
At least two mixing drums 31, the interval setting of at least two mixing drum 31, spacing distance are provided with the oxidation pond 10
Waste liquid is set to form interior circulation enough.
One end of the air line 32 is located in mixing drum 31, therefore air is entered and mixed with waste liquid after mixing drum 31
Gas and liquid mixture is formed, because the density of gas and liquid mixture rises much smaller than the density before waste liquid mixing, therefore gas and liquid mixture,
Good turbulent condition is formed in mixing drum 31 so that be full of air in whole waste liquid.Gas and liquid mixture reaches upper port 311
Afterwards part or all of air is separated with waste liquid, and waste liquid declines under gravity, then enters into mixing from the bottom of mixing drum 31
In cylinder 31, interior circulation is formed.
In order to further enhance gas-liquid mixed effect of the air with waste liquid, the air hose in the mixing drum 31
The end in road 32 is connected with least one first microporous diffusers 34.Air is after the first microporous diffuser 34 with higher speed
Degree, dispersion are injected in the less waste liquid of the relatively heavy unmixed air of density or mixing air amount, can be substantially
Improve gas-liquid mixed effect.
One end of the air line 32 is preferably placed at the top of the through hole 312 of the bottom of mixing drum 31, so, air with it is useless
Liquid energy is enough to be sufficiently mixed during rising.Further, first microporous diffuser 34 is located on the through hole 312
Side, the gas and liquid mixture in mixing drum 31 causes the pressure outside the internal ratio mixing drum 31 of mixing drum 31 low after rising, in mixing drum 31
Mixed liquor density ratio mixing drum 31 outside waste liquid density it is little, through hole of the waste liquid in mixing drum 31 from bottom can be promoted
312 enter in mixing drum 31, so as to waste liquid is interior along the inside and outside formation interior circulation of mixing drum 31 in oxidation pond 10.When influent quality becomes
When change amplitude is larger, circulating load can be improved by increasing air supply, to reduce rushing to device for catalyzing and oxidating ozone 100
Hit.
The catalyst unit 40 is outside the mixing drum 31 and close described between upper port 311 and through hole 312
Through hole 312；Specifically, the catalyst unit 40 is surrounded on outside mixing drum 31 described at least one；The volume of catalyst unit 40 is institute
State the 5%-50% of the volume of oxidation pond 10.The catalyst unit 40 includes bed course 41, the Catalytic Layer 42 above the bed course 41,
Catalyst with O3 catalytic oxidation in the Catalytic Layer 42.
The ozone unit 20 includes that the ozone generating-device 21, one end for providing ozone is connected to the ozone generating-device
21 and ozone is delivered to into the ozone pipeline 22 of oxidation pond 10.The other end of the ozone pipeline 22 is divided into and stretches into the mixing drum
Interior ozone pipeline 221, the outer ozone pipeline 222 stretched into outside the mixing drum 31 in 31.In the present invention, ozone generating-device 21
Refer to that the device of ozone can be provided, including ozonator, steel cylinder of storage ozone for preparing ozone etc..
In order to strengthen the mixed effect of ozone and waste liquid, the interior ozone pipeline 221, outer ozone pipeline 222 connect respectively
There are interior second microporous diffuser 231, outer second microporous diffuser 232.Ozone through interior second microporous diffuser 231, outer second
It is injected in waste liquid with higher speed, dispersion after microporous diffuser 232, gas-liquid mixed effect can be strengthened, improves ozone oxygen
Change effect, save ozone input amount, reduces cost.In the present embodiment, interior second microporous diffuser 231 is near the first micropore
Bubbler 34 is arranged, and outer second microporous diffuser 232 is located at the top of Catalytic Layer 42 of catalyst unit 40.
Ozone is out entered into afterwards in mixing drum 31 from interior second microporous diffuser 231, the gas-liquid formed with air-waste liquid
Mixed liquor is vigorously mixed, and forms the relatively low ozone-air-waste liquid gas and liquid mixture of density and rises, in mixed process,
Ozone is well-dispersed in waste liquid, and is reacted with the hardly degraded organic substance in waste liquid, realizes the oxidation of waste liquid.Ozone-sky
Gas-waste liquid gas and liquid mixture can increase the contact area of ozone and waste liquid, improve ozone utilization rate.
Ozone-air-waste liquid gas and liquid mixture is risen to after upper port 311, and all or part of air and ozone are from useless
In liquid depart from after waste liquid flow downward from outside mixing drum 31 under gravity, and again from through hole 312 enter mixing drum 31 in,
Inner recirculation flow is formed, the time of contact of ozone and waste liquid is increased.
Meanwhile, waste liquid flow downward from outside mixing drum 31 during with from outer second microporous diffuser 232 out smelly
Carrier of oxygen counter current contacting, causes ozone to be dissolved in formation ozone-waste liquid mixed liquor in waste liquid under high velocity impact.The mixed liquor to
It is lower that ozone produces the higher hydroxyl radical free radical of oxidability under the catalytic action of catalyst during Catalytic Layer 42,
The hardly degraded organic substance in waste liquid is further aoxidized by hydroxyl radical free radical, the oxygen again of waste liquid is realized by catalytic ozonation
Change.The bottom of oxidation pond 10 is reached after waste liquid passes through catalyst unit 40, then is entered in mixing drum 31 by through hole 312, completed
Oxidation-the catalytic oxidation process of a cycle.
Waste liquid is entered after oxidation pond 10 from water inlet 11, and-catalysis oxidation is aoxidized through constantly, and the difficult degradation in waste liquid has
Machine thing is constantly degraded.Simultaneously in cyclic process, the part waste liquid after degraded is upper from upper port 311, finally from water outlet
Mouthfuls 12 discharge, to be discharged or recycle.
The back purge system 50 includes being arranged at the backwash gas distribution pipe 51 and backwash water distributor of the lower section of Catalytic Layer 42
52nd, the backwash outlet pipe 53 at the top of oxidation pond.After operation a period of time, backwash gas distribution pipe 51 and backwash water distribution are opened
Pipe 52 carries out backwash to Catalytic Layer 42, the impurity of catalyst surface is removed, to ensure the stability of catalytic oxidation effect.
When carrying out liquid waste processing using above-mentioned device for catalyzing and oxidating ozone 100：Waste liquid is continuously entered from water inlet 11 and aoxidized
Pond 10；Air compressing device 33 is opened, compressed air Jing air line 32, the first microporous diffuser 34 are entered in mixing drum 31, air
Rise at a high speed and the good turbulent flow of formation in the mixing drum 31 in mixing drum 31 with waste liquid formation air-waste liquid mixed liquor
State；Start ozone unit 20, the ozone that ozone generating-device 21 is provided is through ozone pipeline 22, interior second microporous diffuser
231 enter in mixing drum 31, are vigorously mixed and rise with the air-waste liquid mixed liquor in mixing drum 31, smelly in mixed process
Oxygen is fully dispersed, be dissolved in waste liquid, reacts with the hardly degraded organic substance in waste liquid, realizes that waste liquid is aoxidized；Ozone-sky
Gas-waste liquid mixed liquor is risen to behind the top of mixing drum 31, and part ozone and air are therefrom separated, and waste liquid is export-oriented from mixing drum 31
Lower flowing forms ozone-waste liquid mixed liquor with the ozone high velocity impact by outer second microporous diffuser 232 out, realizes waste liquid
Again from through hole 312 into mixing drum 31 after catalysis oxidation, interior circulation is formed in oxidation pond 10.
In sum, device for catalyzing and oxidating ozone 100 of the invention enhances ozone with waste liquid by mixing arrangement 30
Mixed effect, improves the oxidability of ozone, and then improves the utilization rate of ozone, reduces input amount and the catalysis of ozone
Agent consumption and cost.
Above example is only unrestricted to illustrate technical scheme, although with reference to preferred embodiment to this
It is bright to be described in detail, it will be understood by those within the art that, technical scheme can be modified
Or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (6)
1. a kind of device for catalyzing and oxidating ozone, for liquid waste processing, the device for catalyzing and oxidating ozone includes oxidation pond, to described
Oxidation pond provides ozone unit, the catalyst unit in the oxidation pond of ozone, and the oxidation pond is provided with positioned at bottom
Water inlet, higher than the outlet of the water inlet, it is characterised in that：The device for catalyzing and oxidating ozone also include strengthen ozone with
The mixing arrangement of waste liquid mixing;The mixing arrangement includes mixed in oxidation pond and between water inlet and outlet
Conjunction cylinder, the air compressing device that offer air in the mixing drum is provided by air line；The mixing drum bottom offers and supplies waste liquid
The through hole circulated inside and outside mixing drum, the mixing drum top offers upper port;The air in the mixing drum
One end of pipeline is located at through hole top;The ozone unit includes that the ozone generating-device of offer ozone, one end are connected to
Ozone is simultaneously delivered to the ozone pipeline of oxidation pond by the ozone generating-device, and the other end of the ozone pipeline is divided into and stretches into institute
State the interior ozone pipeline in mixing drum, the outer ozone pipeline stretched into outside the mixing drum；The interior ozone pipeline, outer ozone pipeline
It is connected to interior second microporous diffuser, outer second microporous diffuser；Outer second microporous diffuser is located at catalyst unit
Top.
2. device for catalyzing and oxidating ozone according to claim 1, it is characterised in that：The sky in the mixing drum
The end of feed channel is connected with the first microporous diffuser.
3. device for catalyzing and oxidating ozone according to claim 2, it is characterised in that：First microporous diffuser is located at institute
State through hole top.
4. device for catalyzing and oxidating ozone according to claim 1, it is characterised in that：The catalyst unit is located at the mixing
Cylinder is outer, and catalyst unit volume is the 5%-50% of the oxidation pond volume.
5. device for catalyzing and oxidating ozone according to claim 1, it is characterised in that：The catalyst unit be located at upper port with
Between through hole.
6. device for catalyzing and oxidating ozone according to claim 1, it is characterised in that：The ozone catalytic oxidation unit is also wrapped
Include the back purge system for processing catalyst unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510204623.5A CN104773810B (en) | 2015-04-27 | 2015-04-27 | Catalytic ozonation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510204623.5A CN104773810B (en) | 2015-04-27 | 2015-04-27 | Catalytic ozonation device |
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| CN104773810A CN104773810A (en) | 2015-07-15 |
| CN104773810B true CN104773810B (en) | 2017-04-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3219998B2 (en) * | 1996-03-27 | 2001-10-15 | 日本碍子株式会社 | Organic wastewater treatment method and apparatus |
| 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 |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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