CN109437390A - A kind of reactor and its application method of catalytic ozonation waste water - Google Patents
A kind of reactor and its application method of catalytic ozonation waste water Download PDFInfo
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- CN109437390A CN109437390A CN201811557679.9A CN201811557679A CN109437390A CN 109437390 A CN109437390 A CN 109437390A CN 201811557679 A CN201811557679 A CN 201811557679A CN 109437390 A CN109437390 A CN 109437390A
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 63
- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- 238000006385 ozonation reaction Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 105
- 238000005192 partition Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 38
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000012071 phase Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007172 homogeneous catalysis Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 206010006326 Breath odour Diseases 0.000 description 1
- 208000032139 Halitosis Diseases 0.000 description 1
- -1 Hydroxyl radical free radical Chemical class 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007210 heterogeneous catalysis Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
Abstract
The invention discloses the reactor and its application method of a kind of catalytic ozonation waste water, which includes: reaction chamber, water inlet, water outlet, gas outlet, circulating outlet;Its lower part is divided into jet reaction chamber and tower reaction chamber by partition inside reaction chamber, jet reaction is intracavitary to be provided with the first catalytic bed and injector, the working fluid import of circulating outlet connection injector, gas outlet is inhaled into fluid inlet by gas circulation pipe connection injector, water inlet is set to the bottom of jet reaction chamber, column plate and the second catalytic bed are provided in tower reaction chamber, water outlet is set to the bottom of tower reaction chamber, air inlet is respectively communicated with the gentle circulation pipe in lower section of column plate, and gas circulation pipe connects offgas outlet.The reactor has many advantages, such as that mass-transfer efficiency is high, reaction rate is fast, ozone utilization rate is high, COD removal rate is high.
Description
Technical field
The invention belongs to field of waste water treatment, more particularly to a kind of reaction of catalytic ozonation Sewage advanced treatment
Device and its application method.
Background technique
Recently as the increasingly strict of sewage drainage standard, the Sewage advanced treatment technology of high efficiency, low cost is developed more
Seem important.The hot spot that high-level oxidation technology is this year to study, catalytic ozonation can produce with high oxidation activity
Hydroxyl radical free radical, the various hardly degraded organic substance pollutants of non-selective removal, therefore widely studied and be applied to waste water
Advanced treating.Catalytic ozonation technology is divided into homogeneous catalysis and heterogeneous catalysis by used catalyst.Homogeneous catalysis, catalyst
It is difficult to recycle, metal ion is easily introduced secondary pollution, while causing the waste of resource, limits its practical application.It is heterogeneous to urge
The catalyst of change technology, is easily recycled, and gas-liquid-solid phase reaction is influenced by mass transfer, weakens the oxidation effectiveness of ozone.Ozone is urged
Oxidation device is to influence wastewater treatment to answer one of key factor of effect.
Currently, in practical engineering application be mostly heterogeneous catalytic oxidation, ozone, waste water, catalyst three-phase between biography
Matter always affects ozone oxidation effect, while restricting the development of catalytic ozonation technology.Research and development function admirable ozone is urged
Oxidation device is very urgent.The ozone catalytic reactor of function admirable can strengthen mass transfer between gas-liquid-solid three-phase, improve ozone
Utilization rate avoids heterogeneous catalytic oxidation shortcoming, widens the application range of catalytic ozonation technology.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of tool
There are mass transfer, the catalytic ozonation waste water reactor that reaction rate is fast, ozone utilization rate is high between strengthening gas-liquid-solid three-phase.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of reactor of catalytic ozonation waste water, comprising: reaction chamber and the water inlet being set on the wall of the reaction chamber,
Water outlet, gas outlet and circulating outlet;
The reaction chamber is internally provided with longitudinal partition, and there are skies between the partition top and the top of the reaction chamber
Gap, the partition bottom are fixedly connected with the bottom of the reaction chamber, and the lower part of the reaction chamber is divided into phase by the partition
Jet reaction chamber and tower reaction chamber mutually independent and be only connected to by partition upper space,
The jet reaction is intracavitary to be provided with the first catalytic bed and injector, and it is anti-that the circulating outlet is set to the jet stream
The top of chamber is answered, the circulating outlet connects the workflow of the injector by the wall that water-circulating pipe passes through the reaction chamber
The outlet of body import, the injector is downward,
The gas outlet is set to the top of the reaction chamber, and the gas outlet passes through the wall of the reaction chamber by gas circulation pipe
Connect the injector is inhaled into fluid inlet,
The water inlet is set to the bottom of the jet reaction chamber,
Column plate and the second catalytic bed are provided in the tower reaction chamber, the water outlet is set to the tower reaction chamber
Bottom, air inlet are respectively communicated with the lower section of whole column plates in the tower reaction chamber and described by air inlet pipe and air intake branch
Gas circulation pipe,
The gas circulation pipe connects offgas outlet by tail gas branch pipe.
Further, circulating pump is additionally provided on the water-circulating pipe.
Further, the height of the partition is the 1/2 ~ 4/5 of the reaction chamber height.
Further, side wall 1/3d ~ 2/3d of the vertical center line of the partition apart from the reaction chamber, wherein d is described
The cross-sectional diameter of reaction chamber.That is, the cross section of reaction chamber is separated into 3 parts with one group of parallel lines, wherein parallel lines are distinguished
At 1/3d and at 2/3d, then partition is then set on this group of parallel lines or between this group of parallel lines.
Further, first catalytic bed is provided with 2 ~ 5 layers, wherein 1 ~ 2 layer of lower section for being set to the injector,
Remaining the first catalytic bed is set to the top of the injector.
Further, the cross section of first catalytic bed is identical as the cross section of the jet reaction chamber.
Further, the circulating outlet is set to the top of the injector.
Further, second catalytic bed is set to the downcomer region of the column plate.
Further, the cross section of second catalytic bed is identical as the cross section of the downspout.
Further, the height of second catalytic bed is the 1/3 ~ 3/3 of the downspout height.
Further, the gas flow in the air inlet pipe and the air intake branch is distributed by valve regulated.
Further, the gas flow in the gas circulation pipe and the tail gas branch pipe is distributed by valve regulated.
The present invention also provides a kind of methods for carrying out catalytic ozonation waste water reaction using above-mentioned reactor, comprising: useless
Water is entered the bottom of the jet reaction chamber by the water inlet, is flowed up, and flows into injection through circulating outlet, water-circulating pipe
The working fluid import of device forms gas-liquid mixture and sprays downwards after mixing with the ozone from air inlet, the gas-liquid mixed
Object overflows over partition top, into tower reaction chamber, by column plate and second by the catalysis reaction of the first catalytic bed upwards
While catalytic bed flows downward with the further hybrid reaction of ozone from tower reaction chamber bottom, preferably via tower anti-
The water outlet in bottom of chamber portion is answered to flow out;The complete gas of unreacted is come back to by the gas outlet at the top of reaction chamber via gas circulation pipe
Reaction is participated in injector;Tail gas is discharged via offgas outlet.
Beneficial effects of the present invention are as follows: injector can produce microbubble, design in conjunction with special structure, strengthen gas
Liquid consolidates mass transfer between three-phase, improves reaction rate, shortens the reaction time, reduces equipment investment;By adjusting outlet valve, control
Discharge outlet ozone concentration improves ozone utilization rate;Jet reaction area strengthens reaction rate, and tower reaction zone reduces returning for waste water
It is mixed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the reactor of catalytic ozonation waste water of the present invention.
Fig. 2 is partition location diagram, and wherein partition is set to shadow region.
Fig. 3 is the first catalytic bed distribution schematic diagram.
Wherein, 1 is gas outlet, and 2 be reaction chamber, and 3 be jet reaction chamber, and 4 be circulating outlet, and 5 be partition, and 6 be tower
Reaction chamber, 7 be injector, and 8 be gas circulation pipe, and 9,10,19,17 be valve, and 11 be water inlet, and 12 be air intake branch, and 13 are
Column plate, 14 be water-circulating pipe, and 15 be circulating pump, and 16 be the second catalytic bed, and 18 be water outlet, and 20 be the first catalytic bed.
Specific embodiment
A kind of reactor of catalytic ozonation waste water as shown in Fig. 1 ~ 3, comprising: reaction chamber 2 and be set to described anti-
Answer water inlet 11, water outlet 18, gas outlet 1 and the circulating outlet 4 on the wall of chamber 2;
The reaction chamber 2 is internally provided with longitudinal partition 5, between 5 top of partition and the top of the reaction chamber 2 there are
Gap, 5 bottom of partition are fixedly connected with the bottom of the reaction chamber 2, and the partition 5 is by the lower part of the reaction chamber 2
It is divided into jet reaction chamber 3 and tower reaction chamber 6 mutually indepedent and be only connected to by 5 upper space of partition,
The first catalytic bed 20 and injector 7 are provided in the jet reaction chamber 3, the circulating outlet 4 is set to described
The top of jet reaction chamber 3, the circulating outlet 4 connect the spray by the wall that water-circulating pipe 14 passes through the reaction chamber 2
The outlet of the working fluid import of emitter 7, the injector 7 is downward,
The gas outlet 1 is set to the top of the reaction chamber 2, and the gas outlet 1 passes through the reaction chamber by gas circulation pipe 8
What 2 wall connected the injector 7 is inhaled into fluid inlet,
The water inlet 11 is set to the bottom of the jet reaction chamber 3,
Column plate 13 and the second catalytic bed 16 are provided in the tower reaction chamber 6, the water outlet 18 is set to described tower
The bottom of reaction chamber 6, air inlet are respectively communicated with whole column plates in the tower reaction chamber 6 by air inlet pipe and air intake branch 12
Lower section and the gas circulation pipe 8,
The gas circulation pipe 8 connects offgas outlet by tail gas branch pipe.
Circulating pump 15 is additionally provided on the water-circulating pipe 14.
The height of the partition 5 is the 1/2 ~ 4/5 of 2 height of reaction chamber.
Side wall 1/3d ~ 2/3d of the vertical center line of the partition 5 apart from the reaction chamber 2, wherein d is the reaction chamber 2
Cross-sectional diameter.That is, the cross section of reaction chamber 2 is separated into 3 parts with one group of parallel lines, wherein parallel lines are located at 1/
At 3d and at 2/3d, then partition is then set on this group of parallel lines or between this group of parallel lines.
First catalytic bed 20 is provided with 2 ~ 5 layers, wherein 1 ~ 2 layer of lower section for being set to the injector 7, remaining
First catalytic bed 20 is set to the top of the injector 7.
The cross section of first catalytic bed 20 is identical as the cross section of the jet reaction chamber 3.
The circulating outlet 4 is set to the top of the injector 7.
Second catalytic bed 16 is set to the downcomer region of the column plate 13.
The cross section of second catalytic bed 16 is identical as the cross section of the downspout.
The height of second catalytic bed 16 is the 1/3 ~ 3/3 of the downspout height.
Gas flow in the air inlet pipe and the air intake branch 12 is distributed by valve regulated.
Gas flow in the gas circulation pipe 8 and the tail gas branch pipe is distributed by valve regulated.
Embodiment 1
Using above-mentioned reactor, catalytic ozonation waste water reaction is carried out, waste water enters the jet reaction by the water inlet
The bottom of chamber, flows up, through circulating outlet, water-circulating pipe flow into injector working fluid import, with come from air inlet
Ozone mixing after formed gas-liquid mixture spray downwards, the gas-liquid mixture by the first catalytic bed catalysis reaction, to
Overflow crosses partition top, into tower reaction chamber, while flowing downward by column plate and the second catalytic bed with come from
The further hybrid reaction of ozone of tower reaction chamber bottom is preferably flowed out via the water outlet of tower reaction chamber bottom;Unreacted
Complete gas is come back to via gas circulation pipe by the gas outlet at the top of reaction chamber and participates in reacting in injector;Tail gas is via tail
Gas outlet discharge.
Ozone can produce microbubble in jet reaction area, strengthen mass transfer between gas-liquid-solid three-phase, improve reaction rate,
Shorten the reaction time, reduces equipment investment.The gas flow distribution of two pipelines is adjusted by valve 17,9, controllable tail gas goes out
Halitosis oxygen concentration improves ozone utilization rate.
Using the waste water of above-mentioned reactor for treatment class containing phenyl ring COD400mg/L, when COD drops to 80mg/L, residence time
No more than 0.75 hour, tail gas foul smell detected that concentration is 1 ~ 5 ppm, handled above-mentioned waste water using common bubbling reactor,
Residence time is usually not less than 1.5 hours, and tail gas ozone detects that concentration is 60 ~ 120ppm, and comparison discovery is handled same useless
Water, using above-mentioned reactor, shorter residence time at least 1/2, equipment volume reduces at least 1/2, and the usage amount of catalyst is reduced
At least 1/2, equipment investment cost reduces nearly 1/2, and ozone utilization rate greatly improves.
Claims (10)
1. a kind of reactor of catalytic ozonation waste water characterized by comprising reaction chamber and be set to the reaction chamber
Water inlet, water outlet, gas outlet and circulating outlet on wall;
The reaction chamber is internally provided with longitudinal partition, and there are skies between the partition top and the top of the reaction chamber
Gap, the partition bottom are fixedly connected with the bottom of the reaction chamber, and the lower part of the reaction chamber is divided into phase by the partition
Jet reaction chamber and tower reaction chamber mutually independent and be only connected to by partition upper space,
The jet reaction is intracavitary to be provided with the first catalytic bed and injector, and it is anti-that the circulating outlet is set to the jet stream
The top of chamber is answered, the circulating outlet connects the workflow of the injector by the wall that water-circulating pipe passes through the reaction chamber
The outlet of body import, the injector is downward,
The gas outlet is set to the top of the reaction chamber, and the gas outlet passes through the wall of the reaction chamber by gas circulation pipe
Connect the injector is inhaled into fluid inlet,
The water inlet is set to the bottom of the jet reaction chamber,
Column plate and the second catalytic bed are provided in the tower reaction chamber, the water outlet is set to the tower reaction chamber
Bottom, air inlet are respectively communicated with the lower section of whole column plates in the tower reaction chamber and described by air inlet pipe and air intake branch
Gas circulation pipe,
The gas circulation pipe connects offgas outlet by tail gas branch pipe.
2. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that on the water-circulating pipe also
It is provided with circulating pump.
3. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that the height of the partition is
The 1/2 ~ 4/5 of the reaction chamber height.
4. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that the vertical center of the partition
Side wall 1/3d ~ 2/3d of reaction chamber described in linear distance, wherein d is the cross-sectional diameter of the reaction chamber.
5. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that first catalytic bed
2 ~ 5 layers are provided with, wherein 1 ~ 2 layer of lower section for being set to the injector, remaining first catalytic bed are set to the injection
The top of device.
6. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that first catalytic bed
Cross section it is identical as the cross section of the jet reaction chamber.
7. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that second catalytic bed
It is set to the downcomer region of the column plate.
8. the reactor of catalytic ozonation waste water according to claim 7, which is characterized in that second catalytic bed
Cross section it is identical as the cross section of the downspout.
9. the reactor of catalytic ozonation waste water according to claim 7, which is characterized in that second catalytic bed
Height be the downspout height 1/3 ~ 3/3.
10. a kind of reactor using any catalytic ozonation waste water of claim 1-9 carries out catalytic ozonation
The method of waste water reaction characterized by comprising waste water is entered the bottom of the jet reaction chamber by the water inlet, upwards
Flowing flows into the working fluid import of injector, shape after mixing with the ozone from air inlet through circulating outlet, water-circulating pipe
It is sprayed downwards at gas-liquid mixture, the gas-liquid mixture overflows over partition by the catalysis reaction of the first catalytic bed upwards
Top, into tower reaction chamber, while flowing downward by column plate and the second catalytic bed and from tower reaction chamber bottom
The further hybrid reaction of ozone, preferably via tower reaction chamber bottom water outlet flow out;The complete gas of unreacted is by anti-
It answers the gas outlet of top of chamber to come back to via gas circulation pipe to participate in reacting in injector;Tail gas is discharged via offgas outlet.
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Cited By (12)
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CN110002575A (en) * | 2019-04-09 | 2019-07-12 | 中国科学院青岛生物能源与过程研究所 | Catalytic ozonation multiple stage circulation reacts continuous processing method |
WO2021227135A1 (en) | 2020-05-14 | 2021-11-18 | 南京延长反应技术研究院有限公司 | Benzene selective hydrogenation reaction system and method |
WO2021253311A1 (en) | 2020-06-17 | 2021-12-23 | 南京延长反应技术研究院有限公司 | Micro-interface strengthened reaction system and method for preparing polyethylene by means of solution method |
CN113929204A (en) * | 2021-11-11 | 2022-01-14 | 南京延长反应技术研究院有限公司 | Micro-interface enhanced ultra-efficient wastewater ozone treatment device and treatment method |
WO2022011867A1 (en) | 2020-07-16 | 2022-01-20 | 南京延长反应技术研究院有限公司 | Micro-interface reaction system and method for diesel hydrogenation |
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DE212020000670U1 (en) | 2020-07-16 | 2022-04-25 | Nanjing Yanchang Reaction Technology Research Institute Co. Ltd | Coal-to-Ethanol Reaction System |
DE212020000665U1 (en) | 2020-05-14 | 2022-04-26 | Nanjing Yanchang Reaction Technology Research Institute Co. Ltd | Enhanced reaction system for producing cyclohexanone by selective hydrogenation of benzene |
WO2022205717A1 (en) | 2021-04-01 | 2022-10-06 | 南京延长反应技术研究院有限公司 | Reaction system and method for preparing butyraldehyde by propylene carbonylation |
WO2023284028A1 (en) | 2021-07-16 | 2023-01-19 | 南京延长反应技术研究院有限公司 | Micro-interface enhanced oxidation system and oxidation method for preparing hydrogen peroxide |
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CN116282462A (en) * | 2022-10-08 | 2023-06-23 | 南京大学盐城环保技术与工程研究院 | Photocatalysis device for advanced treatment of biochemical tail water and photocatalysis process thereof |
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CN110002575A (en) * | 2019-04-09 | 2019-07-12 | 中国科学院青岛生物能源与过程研究所 | Catalytic ozonation multiple stage circulation reacts continuous processing method |
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WO2021227135A1 (en) | 2020-05-14 | 2021-11-18 | 南京延长反应技术研究院有限公司 | Benzene selective hydrogenation reaction system and method |
DE212020000665U1 (en) | 2020-05-14 | 2022-04-26 | Nanjing Yanchang Reaction Technology Research Institute Co. Ltd | Enhanced reaction system for producing cyclohexanone by selective hydrogenation of benzene |
WO2021253311A1 (en) | 2020-06-17 | 2021-12-23 | 南京延长反应技术研究院有限公司 | Micro-interface strengthened reaction system and method for preparing polyethylene by means of solution method |
WO2022011867A1 (en) | 2020-07-16 | 2022-01-20 | 南京延长反应技术研究院有限公司 | Micro-interface reaction system and method for diesel hydrogenation |
DE212020000670U1 (en) | 2020-07-16 | 2022-04-25 | Nanjing Yanchang Reaction Technology Research Institute Co. Ltd | Coal-to-Ethanol Reaction System |
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WO2023284028A1 (en) | 2021-07-16 | 2023-01-19 | 南京延长反应技术研究院有限公司 | Micro-interface enhanced oxidation system and oxidation method for preparing hydrogen peroxide |
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