CN116835752A - Ozone catalytic oxidation sewage treatment plant is reinforceed to microbubble - Google Patents
Ozone catalytic oxidation sewage treatment plant is reinforceed to microbubble Download PDFInfo
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- CN116835752A CN116835752A CN202310732300.8A CN202310732300A CN116835752A CN 116835752 A CN116835752 A CN 116835752A CN 202310732300 A CN202310732300 A CN 202310732300A CN 116835752 A CN116835752 A CN 116835752A
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- reactor body
- water inlet
- partition plate
- mixer
- ozone
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000010865 sewage Substances 0.000 title claims abstract description 48
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 18
- 230000003647 oxidation Effects 0.000 title claims abstract description 14
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000005192 partition Methods 0.000 claims abstract description 27
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- 238000005276 aerator Methods 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 17
- 239000007788 liquid Substances 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- -1 base and organism Chemical compound 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 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
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003911 water pollution Methods 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F7/00—Aeration of stretches of water
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a microbubble-reinforced ozone catalytic oxidation sewage treatment device, which comprises a reactor body, a mixer, an overflow pipe and a catalyst layer, wherein a rotating shaft is arranged at the top of the reactor body in a penetrating manner, one end of the rotating shaft is connected with a motor, the other end of the rotating shaft is connected with a rotating cylinder, the bottom of the rotating cylinder is connected with a connecting shaft, rotating rods are arranged on two sides of the connecting shaft, and cutting blades are arranged on the rotating rods; a separator is arranged in the reactor body, and an aerator is arranged on the separator; the side wall of the reactor body is provided with an air inlet and an air outlet; a water inlet and a water outlet are formed in the side wall of the reactor body, the water inlet pipe penetrates through the water inlet and stretches into the rotary cylinder, a first small hole is formed in the side wall of the water inlet pipe positioned in the rotary cylinder, and the top end of the water inlet pipe is closed; the mixer is positioned below the partition plate and above the catalyst layer; one end of the overflow pipe is positioned above the partition board, and the other end of the overflow pipe passes through the partition board to be communicated with the mixer; the device has solved the problem that current ozone sewage treatment device inefficiency, energy consumption are high.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a microbubble reinforced ozone sewage treatment device.
Background
After industrial sewage is treated by traditional physical and chemical means or biochemical means, most of pollutants which are easy to degrade and remove in the sewage are removed, and the concentration of the pollutants which are still remained in the sewage is low, but the treatment difficulty is high. In many cases, industrial sewage must undergo three-stage advanced treatment to meet the requirements of water pollution treatment and sewage reuse. Ozone sewage treatment is one of effective sewage advanced treatment means, has the advantages of strong oxidizing capability, high reaction speed, convenient use (comprising ozone manufacture, output, dosing and the like), no secondary pollution and the like, and is valued by people.
Ozone is very active in chemical nature and has strong oxidizing property, and for most organic matters, ozone is a good oxidizing agent, and particularly when the organic matters contain unsaturated bonds and chromophoric groups, the ozone is more easily oxidized by the ozone. However, the solubility of ozone in water is only 0.69g/L, ozone can be quickly decomposed into oxygen in water solution, the half-life period is 5-30 min, the direct oxidation reaction of ozone and organic matters has high selectivity, and the products are mostlyAldehydes and carboxylic acids cannot be fully mineralized. The oxidation reaction caused by ozone in the aqueous solution is very complex, and only part of ozone molecules directly contact and react with dissolved substances, and the other part of ozone molecules can be decomposed before the reaction. The indirect oxidation reaction of ozone and organic matters means that ozone molecules firstly generate OH and O 2 · - 、HO 2 And the like, and the chain reaction by the radicals is further generated. OH is generally considered to be the main radical species for the indirect reaction. OH has strong oxidizing property and negative charge electrophilicity, and almost can completely oxidize most organic matters without selectivity.
Chinese patent document CN208120782U discloses a sewage purification device based on ozone, including base and organism, the organism passes through supporting leg fixed connection at the upper surface of base, the inside right side of base begins to have a thing groove of putting, the internally mounted in thing groove has driving motor, and driving motor's output shaft wears out to put the thing groove and extends to the outside of base, and the middle part of organism lower surface has pegged graft the axis of rotation, the bottom of axis of rotation and the inner circle fixed connection of the bearing of installing at base upper surface middle part. According to the sewage purification device based on ozone, the driving motor, the stirring shaft, the stirring paddle and the ozone generator are arranged, the stirring shaft is driven to rotate by the driving motor, and the sewage is stirred in the process of purifying the sewage by ozone, so that the ozone and the sewage are more comprehensively contacted and fused, the purification efficiency of the ozone on the sewage is improved, and the efficient purification effect is achieved by matching with the ultraviolet irradiation lamp; however, the device has the defects of poor ozone mass transfer efficiency, low ozone utilization rate and high energy consumption.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a microbubble reinforced ozone catalytic oxidation sewage treatment device, which solves the problems of low efficiency and high energy consumption of the existing ozone oxidation sewage treatment equipment.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a microbubble intensive ozone catalytic oxidation sewage treatment plant, includes reactor body, inlet tube, overflow pipe, the central rotation axis that is provided with of reactor body top, the one end and the motor of rotation axis are connected, the rotation axis is located the inside other end of reactor body and is connected with a rotary drum, the bottom of rotary drum is connected with the connecting axle, the connecting axle both sides are provided with the rotary rod, be provided with cutting blade on the rotary rod; a baffle plate is arranged in the reactor body, the baffle plate is positioned below the connecting shaft, and a plurality of aerators are arranged on the baffle plate; an air inlet and an air outlet are formed in the side wall of the reactor body, and the air inlet and the air outlet are positioned below the partition plate; the side wall of the reactor body is provided with a water inlet and a water outlet, and the water inlet and the water outlet are positioned below the partition plate; the water inlet pipe penetrates through the water inlet and stretches into the rotary cylinder, a first small hole is formed in the side wall of the water inlet pipe positioned in the rotary cylinder, and the top end of the water inlet pipe positioned in the rotary cylinder is closed; a catalyst layer is arranged at the bottom in the reactor body, a mixer is arranged in the reactor body, and the mixer is positioned below the partition plate and above the catalyst layer; one end of the overflow pipe is positioned above the partition plate, and the other end of the overflow pipe penetrates through the partition plate and then is communicated with the mixer.
Preferably, the connecting shaft is further provided with a stirring blade, and the stirring blade is located below the rotating rod.
Preferably, the rotary cylinder and the connecting shaft are hollow structures.
Preferably, the air inlet is in communication with each of the aerators via a conduit.
Preferably, the mixer is provided with a drainage gas inlet, the top of the reactor body is provided with an air outlet, and the air outlet is communicated with the drainage gas inlet through a pipeline.
Preferably, the catalyst layer is divided into a first reaction zone and a second reaction zone by a vertical baffle, and the first reaction zone is communicated with the bottom of the second reaction zone.
Preferably, the mixer is provided with a mixed flow outlet, and the mixed flow outlet is positioned above the first reaction zone.
Preferably, the inner wall of the rotary cylinder is provided with a second small hole, the outer side and the bottom side of the rotary cylinder are provided with third small holes, and the rotary cylinder is filled with silk screen filler.
Preferably, the top of the reactor body is provided with an observation port, and the bottom of the reactor body is provided with a sewage outlet.
Compared with the prior art, the invention has the following beneficial effects:
1) The microbubble reinforced ozone catalytic oxidation sewage treatment device provided by the invention can reduce the ozone demand in the sewage treatment process, save ozone resources, enable the aerator, the stirring blade and the mixer to generate ozone microbubbles, increase the total surface area of the bubbles, enable the ozone to be in complete contact with sewage, increase the sewage treatment efficiency of the ozone, and reduce the sewage treatment energy consumption.
2) The invention provides a rotary drum, which can lead sewage and ozone to generate cross-flow gas-liquid contact through the action of the rotary drum and an aerator, improve the sewage treatment efficiency of ozone, reduce the resistance drop of ozone gas and enlarge the application range of ozone.
3) According to the invention, through arranging the stirring blades and the cutting blades and through high-speed rotary cutting, ozone gas in sewage is cut into micro-bubbles, the micro-bubbles have high gas-liquid mass transfer efficiency, and have shrinkage and cracking characteristics in a liquid phase, so that the generation of hydroxyl free radicals can be promoted, and the ozone utilization rate and the ozone treatment effect are greatly improved.
4) According to the invention, the catalyst layer is arranged, so that the catalyst can further promote the generation of hydroxyl free radicals in the microbubble ozone oxidation system, strengthen ozone mass transfer, improve ozone utilization rate, enhance ozone oxidation capability and remarkably improve ozone oxidation effect and ozone utilization rate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a micro-bubble reinforced ozone catalytic oxidation sewage treatment device provided by the invention;
FIG. 2 is a vertical cross-sectional view of the rotary drum, connecting shaft;
fig. 3 is a schematic structural view of the stirring blade.
In the figure, 1, a reactor body; 2. a rotation shaft; 3. a rotary drum; 301. a second aperture; 302. a third aperture; 303. a silk screen filler; 4. a connecting shaft; 5. a rotating rod; 6. stirring blades; 7. cutting the blade; 8. a partition plate; 9. an aerator; 10. an air inlet; 11. an air outlet; 12. a water inlet; 1201. a water inlet pipe; 1202. a first aperture; 13. a water outlet; 14. a mixer; 1401. a drainage gas inlet; 1402. a mixed flow outlet; 15. an overflow pipe; 16. a catalyst layer; 1601. a first reaction zone; 1602. a second reaction zone; 17. an observation port; 18. and a sewage outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following examples. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
As shown in fig. 1, the invention provides a microbubble-reinforced ozone catalytic oxidation sewage, which comprises a reactor body 1, a water inlet pipe 1201 and an overflow pipe 15, wherein a rotating shaft 2 is arranged in the center of the top of the reactor body 1 in a penetrating manner, one end of the rotating shaft 2 is connected with a motor, the other end of the rotating shaft 2 positioned in the reactor body 1 is connected with a rotating cylinder 3, the bottom of the rotating cylinder 3 is connected with a connecting shaft 4, rotating rods 5 are arranged on two sides of the connecting shaft 4, and cutting blades 7 are arranged on the rotating rods 5; a baffle plate 8 is arranged in the reactor body 1, the baffle plate 8 is positioned below the connecting shaft 4, and a plurality of aerators 9 are arranged on the baffle plate 8; an air inlet 10 and an air outlet 11 are formed in the side wall of the reactor body 1, and the air inlet 10 and the air outlet 11 are positioned below the partition plate 8; a water inlet 12 and a water outlet 13 are formed in the side wall of the reactor body 1, and the water inlet 12 and the water outlet 13 are positioned below the partition plate 8; the water inlet pipe 1201 extends into the rotary cylinder 3 through the water inlet 12, a first small hole 1202 is formed in the side wall of the water inlet pipe 1201 positioned in the rotary cylinder 3, and the top end of the water inlet pipe 1201 positioned in the rotary cylinder 3 is closed; a catalyst layer 16 is arranged at the bottom in the reactor body 1, a mixer 14 is arranged in the reactor body 1, and the mixer 14 is positioned below the partition plate 8 and above the catalyst layer 16; one end of the overflow pipe 15 is positioned above the partition plate 8, and the other end of the overflow pipe passes through the partition plate 8 and then is communicated with the mixer 14.
Specifically, the connecting shaft 4 is further provided with a stirring blade 6, and the stirring blade 6 is located below the rotating rod 5.
Specifically, the rotary cylinder 3 and the connecting shaft 4 are hollow structures.
Specifically, the air inlet 10 communicates with each of the aerators 9 through a pipe.
Specifically, the mixer 14 is provided with a drainage gas inlet 1401, the top of the reactor body 1 is provided with an air outlet 15, and the air outlet 15 is communicated with the drainage gas inlet 1401 through a pipeline.
Specifically, the catalyst layer 16 is divided into a first reaction zone 1601 and a second reaction zone 1602 by vertical baffles, and the first reaction zone 1601 is communicated with the bottom of the second reaction zone 1602.
Specifically, the mixer 14 is provided with a mixed flow outlet 1402, and the mixed flow outlet 1402 is located above the first reaction zone 1601.
Specifically, the inner wall of the rotary cylinder 3 is provided with a second small hole 301, the outer side and the bottom side of the rotary cylinder 3 are provided with third small holes 302, and the rotary cylinder 3 is filled with silk screen packing 303.
Specifically, the top of the reactor body 1 is provided with an observation port 17, and the bottom of the reactor body 1 is provided with a sewage outlet 18.
Specifically, the catalyst filled in the catalyst layer 16 is a carbon-based catalyst supporting an active metal component.
The invention will be further illustrated by the following examples.
Example 1
The micro-bubble reinforced ozone catalytic oxidation sewage comprises a reactor body 1, a water inlet pipe 1201 and an overflow pipe 15, wherein a rotating shaft 2 is arranged in the center of the top of the reactor body 1 in a penetrating manner, one end of the rotating shaft 2 is connected with a motor, the other end of the rotating shaft 2 positioned in the reactor body 1 is connected with a rotating cylinder 3, the bottom of the rotating cylinder 3 is connected with a connecting shaft 4, rotating rods 5 are arranged on two sides of the connecting shaft 4, and cutting blades 7 are arranged on the rotating rods 5; a baffle plate 8 is arranged in the reactor body 1, the baffle plate 8 is positioned below the connecting shaft 4, and a plurality of aerators 9 are arranged on the baffle plate 8; an air inlet 10 and an air outlet 11 are formed in the side wall of the reactor body 1, and the air inlet 10 and the air outlet 11 are positioned below the partition plate 8; a water inlet 12 and a water outlet 13 are formed in the side wall of the reactor body 1, and the water inlet 12 and the water outlet 13 are positioned below the partition plate 8; the water inlet pipe 1201 extends into the rotary cylinder 3 through the water inlet 12, a first small hole 1202 is formed in the side wall of the water inlet pipe 1201 positioned in the rotary cylinder 3, and the top end of the water inlet pipe 1201 positioned in the rotary cylinder 3 is closed; a catalyst layer 16 is arranged at the bottom in the reactor body 1, a mixer 14 is arranged in the reactor body 1, and the mixer 14 is positioned below the partition plate 8 and above the catalyst layer 16; one end of the overflow pipe 15 is positioned above the partition plate 8, and the other end of the overflow pipe passes through the partition plate 8 and then is communicated with the mixer 14.
Specifically, the connecting shaft 4 is further provided with a stirring blade 6, and the stirring blade 6 is located below the rotating rod 5.
Specifically, the rotary cylinder 3 and the connecting shaft 4 are hollow structures.
Specifically, the air inlet 10 communicates with each of the aerators 9 through a pipe.
Specifically, the mixer 14 is provided with a drainage gas inlet 1401, the top of the reactor body 1 is provided with an air outlet 15, and the air outlet 15 is communicated with the drainage gas inlet 1401 through a pipeline.
Specifically, the catalyst layer 16 is divided into a first reaction zone 1601 and a second reaction zone 1602 by vertical baffles, and the first reaction zone 1601 is communicated with the bottom of the second reaction zone 1602.
Specifically, the mixer 14 is provided with a mixed flow outlet 1402, and the mixed flow outlet 1402 is located above the first reaction zone 1601.
Specifically, the inner wall of the rotary cylinder 3 is provided with a second small hole 301, the outer side and the bottom side of the rotary cylinder 3 are provided with third small holes 302, and the rotary cylinder 3 is filled with silk screen packing 303.
Specifically, the top of the reactor body 1 is provided with an observation port 17, and the bottom of the reactor body 1 is provided with a sewage outlet 18.
Specifically, the catalyst filled in the catalyst layer 16 is a carbon-based catalyst supporting an active metal component.
Application example 1
The equipment shown in example 1 is used for treating the effluent of a settling tank after biochemical treatment of a chemical plant, the hydraulic retention time is designed to be 40min, and the inflow CODcr=100-120 mg/L and B/C is carried out when the continuous inflow is 80L/h<0.1, pH=7.5-9.5, total air inflow of 25L/h, ozone concentration of 60mg/L, columnar carbon-based catalyst, CODcr of effluent after device treatment of 30-40 mg/L, average COD removal rate of 72%,0.5mgCOD/mgO 3 The operation energy consumption is about 0.1 kW.h/m 3 。
Working principle: the sewage treatment process of the invention is that sewage enters the rotary drum 3 from the water inlet 12 through the water inlet pipe 1201, leaves the rotary drum 3 in the form of fog drops to enter the reactor body under the double shearing action of centrifugal force of high-speed rotation and silk screen packing 303 filled in the rotary drum 3 through small holes on the rotary drum 3;
ozone gas released by the aerator 9 reacts with sewage in the sewage, the rotating rod 5 drives the cutting blades 7 and the connecting shaft 4 drives the stirring blades 6 to produce micro-bubbles under the combined action, the micro-bubbles have shrinkage and cracking characteristics in a liquid phase, the generation of hydroxyl free radicals can be promoted, the gas-liquid mass transfer efficiency of ozone and sewage can be improved, and the treatment effect of ozone on the sewage can be promoted;
after the ozone gas escapes from the sewage, the ozone gas is in countercurrent contact with sewage liquid drops generated from the rotary cylinder 3 in the rising process to react, so that the efficiency of ozone treatment on the sewage is further improved, and the redundant ozone gas is discharged from the air outlet 15 at the top of the reactor and is introduced into the mixer 14 through a pipeline.
The sewage is fully contacted and oxidized with ozone, then enters the mixer 14 from the overflow pipe 15, is fully contacted and mixed with ozone gas discharged from the gas outlet 15 in the mixer 14 to form a gas-liquid mixture, then is discharged from the mixed flow outlet 1402, enters the first reaction zone 1601, is contacted and reacted with an ozone catalyst in the first reaction zone 1601, then enters the second reaction zone 1602 from the bottom of the catalyst layer 16, is subjected to ozone catalytic oxidation reaction, and is discharged from the water outlet 13 at the upper part of the second reaction zone 1602, and the reacted gas is discharged from the gas outlet 11.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a microbubble intensive ozone catalytic oxidation sewage treatment plant, its characterized in that includes reactor body (1), inlet tube (1201), overflow pipe (15), the central authorities of reactor body (1) top run through and are provided with rotation axis (2), the one end and the motor of rotation axis (2) are connected, rotation axis (2) are located the inside other end of reactor body (1) and are connected with rotary drum (3), the bottom of rotary drum (3) is connected with connecting axle (4), connecting axle (4) both sides are provided with rotary rod (5), be provided with cutting blade (7) on rotary rod (5); a partition plate (8) is arranged in the reactor body (1), the partition plate (8) is positioned below the connecting shaft (4), and a plurality of aerators (9) are arranged on the partition plate (8); an air inlet (10) and an air outlet (11) are formed in the side wall of the reactor body (1), and the air inlet (10) and the air outlet (11) are both positioned below the partition plate (8); a water inlet (12) and a water outlet (13) are formed in the side wall of the reactor body (1), and the water inlet (12) and the water outlet (13) are both positioned below the partition plate (8); the water inlet pipe (1201) penetrates through the water inlet (12) and stretches into the rotary cylinder (3), a first small hole (1202) is formed in the side wall of the water inlet pipe (1201) positioned in the rotary cylinder (3), and the top end of the water inlet pipe (1201) positioned in the rotary cylinder (3) is closed; a catalyst layer (16) is arranged at the inner bottom of the reactor body (1), a mixer (14) is arranged inside the reactor body (1), and the mixer (14) is positioned below the partition plate (8) and above the catalyst layer (16); one end of the overflow pipe (15) is positioned above the partition plate (8), and the other end of the overflow pipe passes through the partition plate (8) and then is communicated with the mixer (14).
2. Device according to claim 1, characterized in that the connecting shaft (4) is further provided with stirring blades (6), the stirring blades (6) being located below the rotating rod (5).
3. The device according to claim 1, wherein the rotating cylinder (3) and the connecting shaft (4) are hollow structures.
4. The apparatus according to claim 1, characterized in that the air inlet (10) communicates with each of the aerators (9) through a pipe.
5. The device according to claim 1, wherein the mixer (14) is provided with a drainage gas inlet (1401), and the top of the reactor body (1) is provided with a gas outlet (15).
6. The device according to claim 5, characterized in that the air outlet (15) is in communication with a drainage air inlet (1401) via a pipe.
7. The apparatus of claim 1, wherein the catalyst layer (16) is divided into a first reaction zone (1601) and a second reaction zone (1602) by vertical baffles, the first reaction zone (1601) being in communication with the bottom of the second reaction zone (1602).
8. The apparatus according to claim 7, characterized in that the mixer (14) is provided with a mixed flow outlet (1402), the mixed flow outlet (1402) being located above the first reaction zone (1601).
9. The device according to claim 1, characterized in that the inner wall of the rotary cylinder (3) is provided with a second small hole (301), the outer side and the bottom side of the rotary cylinder (3) are provided with third small holes (302), and the rotary cylinder (3) is filled with silk screen packing (303).
10. The device according to claim 1, characterized in that the top of the reactor body (1) is provided with a viewing port (17) and the bottom of the reactor body (1) is provided with a drain (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310732300.8A CN116835752A (en) | 2023-06-20 | 2023-06-20 | Ozone catalytic oxidation sewage treatment plant is reinforceed to microbubble |
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| CN202310732300.8A CN116835752A (en) | 2023-06-20 | 2023-06-20 | Ozone catalytic oxidation sewage treatment plant is reinforceed to microbubble |
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