CN112919616A - High-efficient ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water - Google Patents
High-efficient ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water Download PDFInfo
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- CN112919616A CN112919616A CN202110190442.7A CN202110190442A CN112919616A CN 112919616 A CN112919616 A CN 112919616A CN 202110190442 A CN202110190442 A CN 202110190442A CN 112919616 A CN112919616 A CN 112919616A
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- catalytic oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
Abstract
The invention discloses a high-efficiency ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water, which comprises an ozone catalytic oxidation contact cavity, an ozone catalytic oxidation reaction cavity and a return pipe, wherein: the invention adopts a water ejector to suck ozone under negative pressure and fully mix with the tail water of the sewage in a chemical industry park, the water distribution and the gas distribution are carried out simultaneously, the mass transfer efficiency is high, and an ozone generator and an external mixing device are arranged outside the reactor, so the maintenance is safe and convenient.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a high-efficiency ozone catalytic oxidation reactor for deeply treating chemical industry park sewage tail water.
Background
Ozone is the most oxidizing oxidant in the current general oxidants, and the ozone catalytic oxidation technology is an advanced oxidation technology based on ozone. The metal-loaded active carbon is used as a catalyst to assist the advanced oxidation process of ozone, the chemical oxidation of hydroxyl radicals (HO) is generated, the selectivity of ozone oxidation can be greatly reduced, the ozone utilization rate and the sewage treatment efficiency are improved, and the method is widely applied to the aspects of sewage deep treatment, sewage recycling and the like.
At present, a micropore aerator is adopted for gas distribution in an ozone catalytic oxidation reactor, and the micropore aerator is high in failure rate, frequent in replacement, high in replacement operation difficulty and potential safety hazard due to the fact that the micropore aerator is in a high-oxidizing environment, and the continuous chemical industry park sewage tail water treatment yield is influenced.
Disclosure of Invention
The invention aims to provide a high-efficiency ozone catalytic oxidation reactor for deeply treating chemical industry park sewage tail water, and aims to solve the problems that the existing ozone catalytic oxidation reactor has poor mass transfer effect of ozone and chemical industry park sewage tail water, low ozone utilization rate, low catalytic oxidation efficiency, serious reactor ozone escape and heavy ozone odor in field air.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high-efficient ozone catalytic oxidation reactor of advanced treatment chemical industry garden sewage tail water, includes ozone catalytic oxidation contact chamber, ozone catalytic oxidation reaction chamber and back flow, wherein:
an ozone catalytic oxidation contact cavity and an ozone catalytic oxidation reaction cavity are arranged in the reactor, and the ozone catalytic oxidation contact cavity and the ozone catalytic oxidation reaction cavity are arranged in series at intervals;
an ozone catalyst packing layer is arranged in the ozone catalytic oxidation contact cavity, and a water distributor is arranged at the bottom of the high-efficiency ozone catalyst packing layer;
a water outlet weir plate is arranged above the catalytic ozonation reaction cavity at the tail part;
the input end of the backflow pipe is communicated with an ozone catalytic oxidation reaction cavity arranged below the water outlet weir plate, and the output end of the backflow pipe is communicated with the input end of the water distributor;
a reflux pump and a water ejector are arranged on the reflux pipeline, and an air inlet of the water ejector is connected with an external ozone generator;
and an ozone destructor is arranged at the top of the ozone catalytic oxidation reaction cavity at the tail part.
Preferably, the ozone catalytic oxidation contact cavity comprises a first-level efficient ozone catalytic oxidation contact cavity, a second-level efficient ozone catalytic oxidation contact cavity and a third-level efficient ozone catalytic oxidation contact cavity.
Preferably, the ozone catalytic oxidation reaction cavity comprises a first-level efficient ozone catalytic oxidation reaction cavity, a second-level efficient ozone catalytic oxidation reaction cavity and a third-level efficient ozone catalytic oxidation reaction cavity.
Preferably, a water outlet weir plate is arranged above the three-level efficient ozone catalytic oxidation reaction cavity, and an ozone destructor is arranged at the top of the three-level efficient ozone catalytic oxidation reaction cavity.
Preferably, the ozone catalyst packing layer is an aluminum-based ozone catalyst packing layer.
Preferably, the ozone catalyst packing layer comprises a carrier and an active component, wherein the carrier is rare earth modified active alumina, and the active component is a manganese and cobalt composite oxide.
Preferably, the bottom of the reactor is provided with a water inlet cavity, the water inlet cavity is communicated with the ozone catalytic oxidation contact cavity, and the water inlet cavity is communicated with an external mixing device through a water inlet pump
The invention has the technical effects and advantages that the high-efficiency ozone catalytic oxidation reactor for deeply treating the chemical industry park sewage tail water comprises:
1. the water ejector is adopted to suck ozone under negative pressure and fully mix the ozone with the chemical industry park sewage tail water, water distribution and gas distribution are carried out simultaneously, the mass transfer efficiency is high, and the ozone generator and an external mixing device are arranged outside the reactor, so that the maintenance is safe and convenient;
2. the ozone cavity adopts a three-level ozone catalytic oxidation contact cavity and a three-level ozone catalytic oxidation reaction cavity which are alternately connected in series, and the tail water of the sewage in the chemical industry park is contacted with the ozone in a grading way and is subjected to grading reaction, so that the ozone is fully utilized, and the reaction effect is good;
3. the packing layer of the high-efficiency ozone catalyst is a high-efficiency ozone oxidation catalyst which takes rare earth modified active alumina as a carrier and takes manganese-cobalt and other composite oxides as active components, so that the ozone utilization rate is high, and the catalytic oxidation effect is good;
4. the water ejector sucks ozone and distributes air under negative pressure, the equipment is simple, the failure rate is low, the maintenance is convenient, and the mixing efficiency with the chemical industry park sewage tail water is high;
5. the treated chemical industry park sewage tail water flows back to contact cavities at all levels of the reactor through a return pipeline, and the chemical industry park sewage tail water is subjected to secondary treatment, so that the ozone reaction efficiency is improved, and the COD removal rate is improved;
6. the ozone gas distribution and the backflow coupling are cooperated, so that the stability and the practicability of the system are greatly improved;
7. the problems of high failure rate, high overhauling difficulty and poor safety of the aerator air distribution and water distribution equipment under the high oxidizing condition are solved.
Drawings
The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a first-stage efficient ozone catalytic oxidation contact cavity; 2. a first-stage efficient ozone catalytic oxidation reaction cavity; 3. a secondary high-efficiency ozone catalytic oxidation contact cavity; 4. a secondary high-efficiency ozone catalytic oxidation reaction cavity; 5. a three-stage high-efficiency ozone catalytic oxidation contact cavity; 6. a three-stage high-efficiency ozone catalytic oxidation reaction cavity; 7. a high-efficiency ozone catalyst packing layer; 8. a water distributor; 9. a water outlet weir plate; 10. a reflux pump; 11. a water ejector; 12. an ozone destructor; 13. a water inlet cavity; 14. a water inlet pump; 15. a return pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a high-efficiency catalytic ozonation reactor for advanced treatment of chemical industry park sewage tail water, which comprises an ozone catalytic oxidation contact cavity, an ozone catalytic oxidation reaction cavity and a return pipe 15, wherein the ozone catalytic oxidation contact cavity comprises a first ozone catalytic oxidation contact cavity body and a second ozone catalytic oxidation contact cavity body, the first ozone catalytic oxidation contact cavity body comprises a first ozone catalytic oxidation contact cavity body and a second ozone catalytic oxidation contact cavity body:
inside ozone catalytic oxidation contact chamber and the ozone catalytic oxidation reaction chamber of being provided with of reactor, ozone catalytic oxidation contact chamber and ozone catalytic oxidation reaction chamber quantity respectively are three, wherein, ozone catalytic oxidation contact chamber includes, one-level high-efficient ozone catalytic oxidation contact chamber 1, second grade high-efficient ozone catalytic oxidation contact chamber 3 and tertiary high-efficient ozone catalytic oxidation contact chamber 5, ozone catalytic oxidation reaction chamber includes, one-level high-efficient ozone catalytic oxidation reaction chamber 2, second grade high-efficient ozone catalytic oxidation reaction chamber 4 and tertiary high-efficient ozone catalytic oxidation reaction chamber 6.
Ozone catalytic oxidation contact chamber with ozone catalytic oxidation reaction chamber interval is established ties and is set up, and has set gradually one-level high-efficient ozone catalytic oxidation contact chamber 1, one-level high-efficient ozone catalytic oxidation reaction chamber 2, second grade high-efficient ozone catalytic oxidation contact chamber 3, second grade high-efficient ozone catalytic oxidation reaction chamber 4, tertiary high-efficient ozone catalytic oxidation contact chamber 5 and tertiary high-efficient ozone catalytic oxidation reaction chamber 6 in the reactor from left to right.
An ozone catalyst packing layer is arranged in the first-stage high-efficiency ozone catalytic oxidation contact cavity 1, the second-stage high-efficiency ozone catalytic oxidation contact cavity 3 and the third-stage high-efficiency ozone catalytic oxidation contact cavity 5, and a water distributor 8 is arranged at the bottom of the high-efficiency ozone catalyst packing layer 7.
A water outlet weir plate 9 is arranged above the three-level efficient ozone catalytic oxidation reaction cavity 6, and the treated chemical industry park sewage tail water is collected through the water outlet weir plate 9 and then flows out.
The water distribution and gas distribution device is characterized in that the input end of the return pipe 15 is communicated with the three-stage efficient ozone catalytic oxidation reaction cavity 6 arranged below the water outlet weir plate 9, the output end of the return pipe 15 is communicated with the input end of the water distributor 8, a return pump 10 and a water ejector 11 are arranged on the way of the return pipe 15, the air inlet of the water ejector 11 is connected with an external ozone generator, the ozone output by the external ozone generator is sucked by the negative pressure of the water ejector 11 and is fully mixed with the chemical industry park sewage tail water, the water distribution and the gas distribution are carried out simultaneously, and the efficiency is.
The top of the three-level efficient ozone catalytic oxidation reaction cavity 6 is provided with an ozone destructor 12, and the residual little ozone which is not reacted in the reactor can be collected and treated by the ozone destructor 12 and then discharged to the atmosphere, so that the air pollution is reduced.
Specifically, the ozone catalyst packing layer is an aluminum-based ozone catalyst packing layer, and ozone and the aluminum-based ozone catalyst packing layer generate high-oxidizing substance hydroxyl free radicals through catalytic chemical reaction to oxidize and carbonize organic matters in sewage and degrade COD.
Specifically, the ozone catalyst packing layer comprises a carrier and an active component, wherein the carrier is rare earth modified active alumina, and the active component is a manganese and cobalt composite oxide, so that the ozone utilization rate is high, and the catalytic oxidation effect is good.
Specifically, the reactor bottom is equipped with intake antrum 13, just intake antrum 13 is linked together with ozone catalytic oxidation contact chamber, intake antrum 13 is linked together through intake pump 14 and external mixing device, and external mixing device carries out the intensive mixing to chemical industry garden sewage tail water, and the industrial garden sewage tail water after the intensive mixing passes through intake pump 14 pressure boost entering reactor bottom intake antrum 13.
In the invention, the ozone generator and the external mixing device are both arranged outside the reactor, so that the maintenance is safe and convenient.
The working principle is as follows: the high-efficiency ozone catalytic oxidation reactor for deeply treating the chemical industry park sewage tail water comprises the following treatment processes:
chemical industry garden sewage tail water enters a water inlet cavity 13 of the reactor through the pressurization of a water inlet pump 14, and sequentially enters a first-stage efficient ozone catalytic oxidation contact cavity 1, a first-stage efficient ozone catalytic oxidation reaction cavity 2, a second-stage efficient ozone catalytic oxidation contact cavity 3, a second-stage efficient ozone catalytic oxidation reaction cavity 4, a third-stage efficient ozone catalytic oxidation contact cavity 5 and a third-stage efficient ozone catalytic oxidation reaction cavity 6 through water flow movement; meanwhile, the chemical industry park sewage tail water treated along the lower edge of the water outlet weir plate 9 flows back to the lower end of a high-efficiency ozone catalyst packing layer 7 arranged in a first-level high-efficiency ozone catalytic oxidation contact cavity 1, a second-level high-efficiency ozone catalytic oxidation contact cavity 3 and a third-level high-efficiency ozone catalytic oxidation contact cavity 5 through a return pipe 15 and a return pump 10 arranged on the return pipe 15, water is distributed through a water distributor 8, an ozone generator generates ozone, the ozone is sucked through the return pump 10 and a water ejector 11 under negative pressure, and the ozone and the chemical industry park sewage tail water can be fully mixed for mass transfer; the chemical industry park sewage tail water and the ozone carried in the reflux liquid are fully contacted and mixed in a grading way, and are subjected to grading reaction and high-efficiency mass transfer.
Ozone and chemical industry garden sewage tail water mixed liquid through high-efficient ozone catalytic oxidation contact chamber at different levels and through high-efficient ozone catalyst packing layer 7 at different levels high-efficient ozone catalytic oxidation contact intracavity, ozone and high-efficient ozone catalyst packing layer 7 produce high oxidizing substance hydroxyl free radical through catalytic chemical reaction here, organic matter in the oxidation carbonization sewage tail water, degradation COD, chemical industry garden sewage tail water continues to react with organic matter in the sewage in ozone catalytic oxidation reaction chamber at different levels after passing the oxide layer that ozone and high-efficient ozone catalyst packing layer 7 produced, the remaining few ozone of unreacted passes through ozone destructor 12 at reactor top and collects the back row to the atmosphere of handling, chemical industry garden sewage tail water after the abundant processing goes out water after collecting through going out water weir plate 9.
The reactor adopts the water ejector 11 to suck the ozone under negative pressure and fully mix the ozone with the chemical industry park sewage tail water, the gas is distributed in a grading way, the water distribution and the gas distribution are carried out simultaneously, the mass transfer effect is high, meanwhile, the high-efficiency aluminum-based ozone oxidation catalyst promotes the high utilization rate of the ozone, the catalytic oxidation effect is good, and the ozone generator and an external mixing device are arranged outside the reactor, so the maintenance is safe and convenient.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a high-efficient ozone catalytic oxidation reactor of advanced treatment chemical industry garden sewage tail water, includes ozone catalytic oxidation contact chamber, ozone catalytic oxidation reaction chamber and back flow (15), its characterized in that:
an ozone catalytic oxidation contact cavity and an ozone catalytic oxidation reaction cavity are arranged in the reactor, and the ozone catalytic oxidation contact cavity and the ozone catalytic oxidation reaction cavity are arranged in series at intervals;
an ozone catalyst packing layer is arranged in the ozone catalytic oxidation contact cavity, and a water distributor (8) is arranged at the bottom of the high-efficiency ozone catalyst packing layer (7);
a water outlet weir plate (9) is arranged above the ozone catalytic oxidation reaction cavity at the tail part;
the input end of the return pipe (15) is communicated with an ozone catalytic oxidation reaction cavity arranged below the water outlet weir plate (9), and the output end of the return pipe (15) is communicated with the input end of the water distributor (8);
a reflux pump (10) and a water ejector (11) are arranged on the reflux pipe (15), and an air inlet of the water ejector (11) is connected with an external ozone generator;
the top of the ozone catalytic oxidation reaction cavity at the tail part is provided with an ozone destructor (12).
2. The high-efficiency ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water according to claim 1, characterized in that: the ozone catalytic oxidation contact cavity comprises a first-level efficient ozone catalytic oxidation contact cavity (1), a second-level efficient ozone catalytic oxidation contact cavity (3) and a third-level efficient ozone catalytic oxidation contact cavity (5).
3. The high-efficiency ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water according to claim 1, characterized in that: the ozone catalytic oxidation reaction cavity comprises a first-level efficient ozone catalytic oxidation reaction cavity (2), a second-level efficient ozone catalytic oxidation reaction cavity (4) and a third-level efficient ozone catalytic oxidation reaction cavity (6).
4. The high-efficiency ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water according to claim 3, characterized in that: and a water outlet weir plate (9) is arranged above the three-level efficient ozone catalytic oxidation reaction cavity (6), and an ozone destructor (12) is arranged at the top of the three-level efficient ozone catalytic oxidation reaction cavity (6).
5. The high-efficiency ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water according to claim 1, characterized in that: the ozone catalyst packing layer is an aluminum-based ozone catalyst packing layer.
6. The high-efficiency ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water according to claim 1, characterized in that: the ozone catalyst packing layer comprises a carrier and an active component, wherein the carrier is rare earth modified active alumina, and the active component is a manganese and cobalt composite oxide.
7. The high-efficiency ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water according to claim 1, characterized in that: a water inlet cavity (13) is arranged at the bottom of the reactor, and the water inlet cavity (13) is communicated with the ozone catalytic oxidation contact cavity;
the water inlet cavity (13) is communicated with an external mixing device through a water inlet pump (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110190442.7A CN112919616A (en) | 2021-02-18 | 2021-02-18 | High-efficient ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110190442.7A CN112919616A (en) | 2021-02-18 | 2021-02-18 | High-efficient ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997014657A1 (en) * | 1995-10-17 | 1997-04-24 | Air Products And Chemicals, Inc. | Advanced oxidation of water using catalytic ozonation |
| CN104628187A (en) * | 2015-02-01 | 2015-05-20 | 中南民族大学 | Vertical-flow multi-stage gradient catalytic ozonation and filtering integrated tank |
| CN109384300A (en) * | 2017-08-07 | 2019-02-26 | 光大水务（深圳）有限公司 | Catalytic ozonation method |
| CN110803758A (en) * | 2019-12-05 | 2020-02-18 | 上海环境工程设计研究院有限公司 | Catalytic ozonation reactor for wastewater treatment |
| CN210711110U (en) * | 2019-09-29 | 2020-06-09 | 绍兴海坤水处理技术有限公司 | Equipment system for deeply treating difficult-to-degrade printing and dyeing wastewater |
-
2021
- 2021-02-18 CN CN202110190442.7A patent/CN112919616A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997014657A1 (en) * | 1995-10-17 | 1997-04-24 | Air Products And Chemicals, Inc. | Advanced oxidation of water using catalytic ozonation |
| CN104628187A (en) * | 2015-02-01 | 2015-05-20 | 中南民族大学 | Vertical-flow multi-stage gradient catalytic ozonation and filtering integrated tank |
| CN109384300A (en) * | 2017-08-07 | 2019-02-26 | 光大水务（深圳）有限公司 | Catalytic ozonation method |
| CN210711110U (en) * | 2019-09-29 | 2020-06-09 | 绍兴海坤水处理技术有限公司 | Equipment system for deeply treating difficult-to-degrade printing and dyeing wastewater |
| CN110803758A (en) * | 2019-12-05 | 2020-02-18 | 上海环境工程设计研究院有限公司 | Catalytic ozonation reactor for wastewater treatment |
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