CN110803758A - Catalytic ozonation reactor for wastewater treatment - Google Patents
Catalytic ozonation reactor for wastewater treatment Download PDFInfo
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- CN110803758A CN110803758A CN201911231179.0A CN201911231179A CN110803758A CN 110803758 A CN110803758 A CN 110803758A CN 201911231179 A CN201911231179 A CN 201911231179A CN 110803758 A CN110803758 A CN 110803758A
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- Prior art keywords
- water
- ozone
- inlet
- distributor
- catalytic ozonation
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 41
- 238000006385 ozonation reaction Methods 0.000 title claims abstract description 26
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000002351 wastewater Substances 0.000 claims abstract description 28
- 238000010992 reflux Methods 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 abstract description 13
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000012546 transfer Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005276 aerator Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
Images
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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to a catalytic ozonation reactor for wastewater treatment, which comprises a catalytic ozonation reaction cavity, wherein an ozone catalyst packing layer is arranged in the catalytic ozonation reaction cavity, a water inlet distributor and a gas-water mixed liquid distributor are arranged below the ozone catalyst packing layer, and a water outlet weir plate is arranged above the ozone catalyst packing layer; the device comprises a gas-water mixed liquid water distributor, a water outlet weir plate, a water inlet, a reflux pipe, a reflux pump, a water ejector and an ozone generator, wherein the gas inlet of the water ejector is connected with the outlet of the reflux pipe, the inlet of the reflux pipe is communicated with an ozone catalytic oxidation reaction cavity at the lower edge of the water outlet weir plate, the pipeline of the reflux pipe is provided with the reflux pump and the water ejector. The water ejector is adopted to suck ozone under negative pressure and fully mix the ozone with the wastewater, water distribution and gas distribution are carried out simultaneously, the mass transfer efficiency is high, the ozone utilization rate is high, the catalytic oxidation effect is good, and the ozone and wastewater mixing device is arranged outside the tank body, so that the maintenance is safe and convenient.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a catalytic ozonation reactor for wastewater treatment.
Background
At present, the ozone gas distribution mode of the ozone catalytic oxidation reactor adopts a micropore aerator to distribute gas, 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 influences continuous wastewater treatment production. This patent adopts water dart negative pressure suction ozone and fully mixes with waste water, and water distribution and gas distribution go on simultaneously. The mass transfer efficiency is high, the ozone utilization ratio is high, the catalytic oxidation effect is good, and the ozone and wastewater mixing device is arranged outside the tank body, so that the maintenance is safe and convenient.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the catalytic ozonation reactor for wastewater treatment is provided, and the problems that the existing catalytic ozonation reactor is poor in mass transfer effect of mixed ozone and wastewater, low in ozone utilization rate, low in catalytic ozonation efficiency, serious in reactor ozone escape and heavy in ozone smell in field air are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a catalytic ozonation reactor for wastewater treatment comprises an ozone catalytic ozonation reaction cavity, wherein an ozone catalyst packing layer is arranged in the ozone catalytic ozonation reaction cavity, a water inlet distributor and a gas-water mixed liquid distributor are arranged below the ozone catalyst packing layer, and a water outlet weir plate is arranged above the ozone catalyst packing layer;
the device comprises a gas-water mixed liquid water distributor, a water outlet weir plate, a water inlet, a reflux pipe, a reflux pump, a water ejector and an ozone generator, wherein the gas inlet of the water ejector is connected with the outlet of the reflux pipe, the inlet of the reflux pipe is communicated with an ozone catalytic oxidation reaction cavity at the lower edge of the water outlet weir plate, the pipeline of the reflux pipe is provided with the reflux pump and the water ejector.
Furthermore, the water inlet distributor is positioned below the gas-water mixed liquid distributor.
Further, an ozone destructor is arranged at the top of the ozone catalytic oxidation reaction cavity.
Furthermore, the water inlet distributor is connected with a wastewater inlet pipe, and a water inlet pump is arranged on a pipeline of the wastewater inlet pipe.
The invention has the beneficial effects that:
1. the water ejector is adopted to suck ozone under negative pressure and fully mix the ozone with the wastewater, water distribution and gas distribution are carried out simultaneously, the mass transfer efficiency is high, the ozone utilization rate is high, the catalytic oxidation effect is good, and the ozone and wastewater mixing device is arranged outside the tank body, so that the maintenance is safe and convenient.
2. The water ejector sucks ozone for gas distribution under negative pressure, the equipment is simple, the fault rate is low, the maintenance is convenient, and the mixing efficiency with the wastewater is high;
3. the treated wastewater returns to the wastewater inlet layer of the reactor through backflow, and the wastewater is subjected to secondary treatment, so that the ozone reaction efficiency is improved, and the COD removal rate is improved;
4. the ozone gas distribution and the backflow coupling are cooperated, so that the stability and the practicability of the system are greatly improved.
5. 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 invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a catalytic ozonation reactor for wastewater treatment;
the device comprises a reaction cavity for catalytic oxidation of ozone, a water inlet distributor, a water distributor for mixed gas-water mixture, a packing layer for ozone catalyst, a water outlet weir plate, a reflux pump, a water ejector, a water breaker, an ozone breaker, a water inlet pump, a water outlet pump, a water inlet pump and a water outlet weir plate, wherein the reaction cavity for catalytic oxidation of ozone, the water inlet distributor, the water distributor for water inlet.
Detailed Description
The invention will now be further described with reference to specific examples. These drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a catalytic ozonation reactor for wastewater treatment comprises a catalytic ozonation reaction cavity 1, an ozone catalyst packing layer 4 is arranged in the catalytic ozonation reaction cavity 1, a water inlet distributor 2 and a gas-water mixed liquid distributor 3 are arranged below the ozone catalyst packing layer 4, a water outlet weir plate 5 is arranged above the ozone catalyst packing layer 4, and treated wastewater is discharged after being collected through the water outlet weir plate 5.
The inlet of the gas-water mixed liquid water distributor 3 is connected with the outlet of a return pipe, the inlet of the return pipe is communicated with the ozone catalytic oxidation reaction cavity 1 at the lower edge of the water outlet weir plate 5, a return pump 6 and a water ejector 7 are arranged on a pipeline of the return pipe, and the air inlet of the water ejector 7 is connected with an ozone generator.
Specifically, in this embodiment, the inlet water distributor 2 is located below the gas-water mixture distributor 3.
Specifically, the top of the ozone catalytic oxidation reaction cavity 1 is provided with an ozone destructor 8. The remaining very small amount of unreacted ozone is collected by the ozone destructor 8 at the top of the reaction and is treated and discharged to the atmosphere.
Specifically, the inlet water distributor 2 is connected with a waste water inlet pipe, and a water inlet pump 9 is arranged on a pipeline of the waste water inlet pipe.
The wastewater treatment process of the catalytic ozonation reactor for wastewater treatment comprises the following steps:
industrial wastewater enters an ozone catalytic oxidation reaction cavity 1 of the ozone catalytic oxidation reactor through the pressurization of a water inlet pump 9 and is uniformly distributed by a water inlet distributor 2; meanwhile, the wastewater treated along the lower edge of the reactor water outlet weir plate 5 flows back to the lower end of the ozone catalyst through a pipeline and a reflux pump 6, water is distributed through a gas-water mixed liquid water distributor 3, ozone generated by an ozone generator is sucked in a negative pressure mode through a water ejector 7 arranged on a pressure pipe of the reflux pump 6, and the ozone and the wastewater are fully mixed and subjected to mass transfer; the wastewater is fully contacted and mixed with the ozone carried in the reflux liquid, and the mass transfer is high-efficient. The mixed liquid of ozone and wastewater passes through the ozone special catalyst packing layer after being evenly distributed with water, the ozone and the catalyst generate high-oxidizing substance hydroxyl free radicals through catalytic chemical reaction to oxidize and carbonize organic matters in the wastewater and degrade COD, the wastewater passes through the oxidation layer and then continues to react with the organic matters in the wastewater, and the residual very little unreacted ozone is collected by the ozone destructor 8 at the top of the reaction and then is discharged to the atmosphere. The treated wastewater is collected by the water outlet weir plate 5 and then is discharged.
The catalytic ozonation reactor for wastewater treatment adopts the water ejector 7 to suck ozone under negative pressure and fully mix the ozone with wastewater, water distribution and gas distribution are carried out simultaneously, the mass transfer efficiency is high, the ozone utilization rate is high, the catalytic ozonation effect is good, and the ozone and wastewater mixing device is arranged outside the tank body, so that the maintenance is safe and convenient.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. A catalytic ozonation reactor for wastewater treatment is characterized by comprising a catalytic ozonation reaction cavity, wherein an ozone catalyst packing layer is arranged in the catalytic ozonation reaction cavity, a water inlet distributor and a gas-water mixed liquid distributor are arranged below the ozone catalyst packing layer, and a water outlet weir plate is arranged above the ozone catalyst packing layer;
the device comprises a gas-water mixed liquid water distributor, a water outlet weir plate, a water inlet, a reflux pipe, a reflux pump, a water ejector and an ozone generator, wherein the gas inlet of the water ejector is connected with the outlet of the reflux pipe, the inlet of the reflux pipe is communicated with an ozone catalytic oxidation reaction cavity at the lower edge of the water outlet weir plate, the pipeline of the reflux pipe is provided with the reflux pump and the water ejector.
2. The catalytic ozonation reactor for wastewater treatment according to claim 1, wherein the water inlet distributor is located below the gas-water mixture distributor.
3. The catalytic ozonation reactor for wastewater treatment according to claim 1, wherein an ozone destructor is disposed at the top of the catalytic ozonation reaction chamber.
4. The catalytic ozonation reactor for wastewater treatment according to claim 1, wherein the water inlet distributor is connected with a wastewater inlet pipe, and a water inlet pump is arranged on a pipeline of the wastewater inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911231179.0A CN110803758A (en) | 2019-12-05 | 2019-12-05 | Catalytic ozonation reactor for wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911231179.0A CN110803758A (en) | 2019-12-05 | 2019-12-05 | Catalytic ozonation reactor for wastewater treatment |
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| Publication Number | Publication Date |
|---|---|
| CN110803758A true CN110803758A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911231179.0A Pending CN110803758A (en) | 2019-12-05 | 2019-12-05 | Catalytic ozonation reactor for wastewater treatment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047455A (en) * | 2020-09-25 | 2020-12-08 | 北京首创股份有限公司 | Advanced treatment system and method for sewage through catalytic ozonation |
| CN112919616A (en) * | 2021-02-18 | 2021-06-08 | 科盛环保科技股份有限公司 | High-efficient ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water |
| CN113816484A (en) * | 2021-09-01 | 2021-12-21 | 中化环境科技工程有限公司 | Method and apparatus for treating wastewater |
| CN114275874A (en) * | 2021-12-30 | 2022-04-05 | 华夏碧水环保科技有限公司 | Ozone catalytic oxidation reactor and white spirit production wastewater treatment system comprising same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478065A (en) * | 2014-12-15 | 2015-04-01 | 浙江中凯瑞普环境工程股份有限公司 | Catalytic ozonation reactor for expanded bed and sewage treatment method of catalytic ozonation reactor |
| CN104556347A (en) * | 2014-12-15 | 2015-04-29 | 浙江中凯瑞普环境工程股份有限公司 | Wastewater treatment catalytic ozonation reactor for fluidized bed and wastewater treatment method of wastewater treatment catalytic ozonation reactor |
| CN107759026A (en) * | 2017-11-21 | 2018-03-06 | 南京万德斯环保科技股份有限公司 | The devices and methods therefor of catalytic ozonation aeration bio-filtering tower collaboration processing percolate MBR water outlets |
| CN211226523U (en) * | 2019-12-05 | 2020-08-11 | 上海环境工程设计研究院有限公司 | Catalytic ozonation reactor for wastewater treatment |
-
2019
- 2019-12-05 CN CN201911231179.0A patent/CN110803758A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478065A (en) * | 2014-12-15 | 2015-04-01 | 浙江中凯瑞普环境工程股份有限公司 | Catalytic ozonation reactor for expanded bed and sewage treatment method of catalytic ozonation reactor |
| CN104556347A (en) * | 2014-12-15 | 2015-04-29 | 浙江中凯瑞普环境工程股份有限公司 | Wastewater treatment catalytic ozonation reactor for fluidized bed and wastewater treatment method of wastewater treatment catalytic ozonation reactor |
| CN107759026A (en) * | 2017-11-21 | 2018-03-06 | 南京万德斯环保科技股份有限公司 | The devices and methods therefor of catalytic ozonation aeration bio-filtering tower collaboration processing percolate MBR water outlets |
| CN211226523U (en) * | 2019-12-05 | 2020-08-11 | 上海环境工程设计研究院有限公司 | Catalytic ozonation reactor for wastewater treatment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047455A (en) * | 2020-09-25 | 2020-12-08 | 北京首创股份有限公司 | Advanced treatment system and method for sewage through catalytic ozonation |
| CN112919616A (en) * | 2021-02-18 | 2021-06-08 | 科盛环保科技股份有限公司 | High-efficient ozone catalytic oxidation reactor for advanced treatment of chemical industry park sewage tail water |
| CN113816484A (en) * | 2021-09-01 | 2021-12-21 | 中化环境科技工程有限公司 | Method and apparatus for treating wastewater |
| CN114275874A (en) * | 2021-12-30 | 2022-04-05 | 华夏碧水环保科技有限公司 | Ozone catalytic oxidation reactor and white spirit production wastewater treatment system comprising same |
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