CN111732262A - Electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater and advanced treatment method of organic wastewater - Google Patents
Electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater and advanced treatment method of organic wastewater Download PDFInfo
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- CN111732262A CN111732262A CN202010679251.2A CN202010679251A CN111732262A CN 111732262 A CN111732262 A CN 111732262A CN 202010679251 A CN202010679251 A CN 202010679251A CN 111732262 A CN111732262 A CN 111732262A
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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
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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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Abstract
The invention provides an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater and an advanced treatment method of organic wastewater, belonging to the technical field of advanced treatment of organic wastewater. The basic principle of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the invention is as follows: the catalyst layer fixed in the device and ozone and water in the organic wastewater are subjected to catalytic reaction to generate hydroxyl radicals, and then the hydroxyl radicals are used for oxidizing and decomposing organic pollutants in the organic wastewater. The invention increases the oxidation efficiency of the catalytic oxidation of ozone, improves the utilization rate of ozone, saves energy and reduces consumption by increasing the electromagnetic induction effect and changing the structure and the operation mode of the device.
Description
Technical Field
The invention relates to the technical field of organic wastewater advanced treatment, in particular to an electromagnetic enhanced ozone catalytic oxidation device for organic wastewater advanced treatment and an organic wastewater advanced treatment method.
Background
The organic wastewater is wastewater taking organic matters as main pollutants and is derived from industries such as livestock and poultry breeding, food processing, leather processing, printing and dyeing and the like; the advanced treatment refers to a treatment process which is arranged for enabling the water body to meet the requirements of higher water treatment standards after the wastewater is subjected to primary treatment (pretreatment) and secondary treatment. With the social progress, the strength of environmental protection construction is continuously enhanced, the water eutrophication of water bodies can be directly caused by the water quality of the organic wastewater subjected to primary and secondary treatment, the current social and environmental requirements can not be met, and therefore, the advanced treatment of the organic wastewater is indispensable. However, according to the general law of dynamics of decomposition and removal of water pollutants, the treatment difficulty is increased along with the deepening of wastewater treatment, the difficulty of advanced treatment is far higher than that of primary and secondary treatment, and the advanced treatment cannot be carried out by the traditional treatment method.
The ozone catalytic oxidation technology is a common advanced treatment technology for organic wastewater, has the advantages of good treatment effect, short reaction time and no secondary pollution, and has obvious advantages and huge development prospect compared with other advanced treatment technologies. However, the catalytic ozonation technology has the defects of weak oxidation efficiency, low ozone utilization rate and high energy consumption, and directly limits the popularization and application of the technology.
The principle of catalytic oxidation by ozone has two aspects: firstly, organic pollutants are oxidized and decomposed by using the oxidizing property of ozone, and the potential of an oxidation electrode is 2.07V; secondly, a catalyst catalyzes the reaction of ozone and water to generate hydroxyl radicals, and then the hydroxyl radicals oxidize and decompose organic pollutants, wherein the potential of a hydroxyl radical oxidation electrode is 2.80V. The hydroxyl radicals with high oxidation electrode potential have higher oxidation and oxidation efficiency than ozone, and can oxidize and decompose organic pollutants which are difficult to remove by oxidation of ozone, so that the ozone catalytic oxidation reaction can convert the ozone into the hydroxyl radicals as much as possible.
In fact, because the wastewater treated by catalytic oxidation of ozone generally adopts a solid catalyst, namely, heterogeneous catalytic oxidation reaction occurs, the interface mass transfer efficiency is low, the proportion of hydroxyl radicals generated by catalyzing ozone is small, the oxidation efficiency is poor, and the decomposition and removal of organic pollutants in water are directly limited. On the other hand, the hydroxyl radical exists in the liquid phase for a very short time of not more than 10%-9In seconds, even if the generated hydroxyl radicals are enough, if the generated hydroxyl radicals cannot be rapidly contacted with and oxidize pollutants, the more hydroxyl radicals cannot improve the catalytic oxidation reaction effect, so that the contact efficiency of the hydroxyl radicals is also a key factor influencing the oxidative decomposition of the pollutants.
At present, the prior art still has difficulty solving the problems of the catalytic ozonation technology. Thus. The research and development of the novel ozone catalytic oxidation device and the method which have high oxidation efficiency, high ozone utilization rate and low energy consumption are of great significance.
Disclosure of Invention
The invention aims to provide an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater and an organic wastewater advanced treatment method.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, which comprises an ejector 1, a reaction tube 2, a permanent magnet 3, a swirl propeller 4, a central shaft 5 and a catalyst layer 8;
the ejector 1 is connected with one end of the reaction tube 2;
the permanent magnets 3 are arranged on two symmetrical sides of the inner wall or two symmetrical sides of the outer wall of the reaction tube 2;
the rotational flow paddle 4 is arranged in the reaction tube 2 and corresponds to the permanent magnet 3 in position;
the paddle of the rotating propeller 4 is provided with a conductive material perpendicular to the magnetic induction line generated by the permanent magnet 3, or the paddle of the rotating propeller 4 is made of the conductive material;
the central axes of the ejector 1, the reaction tube 2, the rotational flow paddle 4 and the central axis 5 are superposed;
the central shaft 5 sequentially penetrates through a plurality of the rotational flow paddles 4, and the rotational flow paddles 4 and the central shaft 5 are integrally placed in the reaction tube 2; two ends of the central shaft 5 are respectively connected with two ends of the reaction tube 2;
the catalyst layer 8 is fixed on one or more of the surface of the propeller 4, the inner wall of the reaction tube 2 and the central shaft 5.
Preferably, the permanent magnet 3 comprises a south permanent magnet 31 and a north permanent magnet 32; the permanent magnet 3 is of a cylindrical arch structure, and the permanent magnet 3 is tightly attached to the reaction tube 2.
Preferably, the number of the swirl propellers 4 is a plurality of, the adjacent swirl propellers 4 are provided with blades in different directions, so that the twisting directions of the adjacent swirl propellers 4 are opposite, and the two adjacent swirl propellers are respectively a forward swirl propeller 41 and a reverse swirl propeller 42.
Preferably, the swirling flow propeller 4 is of a propeller-shaped structure, the diameter of the swirling flow propeller 4 is smaller than the inner diameter of the reaction tube 2, a central axis of the swirling flow propeller 4 is a central circular column, and the central axis 5 penetrates through a hollow part of the central circular column.
Preferably, the number of the blades of the rotational flow propeller 4 is 3-6, the blade angle is 15-70 degrees, and the solidity is 0.02-1.5.
Preferably, the reactor also comprises a support frame 6, wherein the support frame 6 is fixed at two ends of the reaction tube 2 and connected with two ends of the central shaft 5, and the support frame 6 is superposed with the central axis of the central shaft 5; the support frame 6 is of an axially symmetrical structure, and the middle part of the support frame is hollow.
Preferably, the vortex propeller also comprises a positioning clamp 7, wherein the positioning clamp 7 is arranged at the rear part of the vortex propeller 4 and is fixed on the central shaft 5; the number of the positioning clamps 7 is a plurality, and the positioning clamps 7 correspond to the swirl paddles 4 one by one.
Preferably, the device also comprises a motor 9, and the motor 9 is connected with the central shaft 5 at the other end of the reaction tube 2.
The invention provides a method for carrying out advanced treatment on organic wastewater by utilizing the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, which comprises the following steps:
simultaneously introducing the organic wastewater and ozone into the ejector 1, and mixing to obtain ozone saturated wastewater;
and (3) introducing the ozone saturated wastewater into the reaction tube 2, rotating the magnetic induction lines generated by the cutting permanent magnet 3 by the cyclone paddle 4 to generate current, and under the enhancement effect of the current, catalyzing the reaction of ozone and water by the catalyst layer 8 to oxidize and remove pollutants in the organic wastewater.
The invention provides an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, which comprises an ejector 1, a reaction tube 2, a permanent magnet 3, a swirl propeller 4, a central shaft 5 and a catalyst layer 8; the ejector 1 is connected with one end of the reaction tube 2; the permanent magnets 3 are arranged on two symmetrical sides of the inner wall or two symmetrical sides of the outer wall of the reaction tube 2; the rotational flow paddle 4 is arranged in the reaction tube 2 and corresponds to the permanent magnet 3 in position; the paddle of the rotating propeller 4 is provided with a conductive material perpendicular to the magnetic induction line generated by the permanent magnet 3, or the paddle of the rotating propeller 4 is made of the conductive material; the central axes of the ejector 1, the reaction tube 2, the rotational flow paddle 4 and the central axis 5 are superposed; the central shaft 5 sequentially penetrates through a plurality of the rotational flow paddles 4, and the rotational flow paddles 4 and the central shaft 5 are integrally placed in the reaction tube 2; two ends of the central shaft 5 are respectively connected with two ends of the reaction tube 2; the catalyst layer 8 is fixed on one or more of the surface of the propeller 4, the inner wall of the reaction tube 2 and the central shaft 5. The basic principle of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the invention is as follows: the catalyst layer 8 fixed in the device and ozone and water in the organic wastewater generate catalytic reaction to generate hydroxyl free radicals, and then the hydroxyl free radicals oxidize and decompose organic pollutants in the organic wastewater.
The invention increases the oxidation efficiency of the catalytic oxidation of ozone, improves the utilization rate of ozone, saves energy and reduces consumption by increasing the electromagnetic induction effect and changing the structure and the operation mode of the device. The device is internally provided with the permanent magnet which is distributed with a strong magnetic field, under the inherent thrust rotation action of organic wastewater water flow, the current is generated by the magnetic induction line cutting action of the electric conductor in the vortex paddle, the catalytic action of the catalyst can be enhanced by the current, the ozone and the water are sufficiently catalyzed to generate hydroxyl radicals, and the oxidation efficiency is improved; the device is internally provided with the rotational flow paddle structure, can rotate by utilizing the inherent thrust of the organic wastewater flow to generate transverse shearing force on the flow, further generate rotational flow, can accelerate the heterogeneous mixing of gas, liquid and solid in the organic wastewater, improve the contact efficiency of the catalyst, ozone, water and hydroxyl free radicals with pollutants, and quickly generate a large amount of hydroxyl free radicals, and meanwhile, the rotational flow can improve the contact efficiency of the hydroxyl free radicals and the pollutants, so that the hydroxyl free radicals can be quickly oxidized to remove the pollutants, the utilization rate of the ozone and the hydroxyl free radicals is improved, the oxidation efficiency is improved, and the ozone utilization rate is increased. The rotational flow paddle can convert water flow into rotational propulsion, and in the traditional aeration method, airflow rises vertically.
The main body (reaction tube) of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater adopts a tubular structure, can be conveniently transported and installed, can be erected as a transport pipeline of organic wastewater, and saves floor area.
All parts of the device are in modular design: the swirling flow paddle, the support frame, the positioning card and the catalyst are all arranged on the central shaft and can be conveniently pushed in, installed, pulled out or maintained by the central shaft; the permanent magnet is attached to the wall of the reaction tube, and is convenient to install and disassemble.
The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater disclosed by the invention is simple in principle and structure, good in advanced treatment effect on organic wastewater, stable in operation, small in occupied area, and convenient to assemble, disassemble and maintain.
Drawings
FIG. 1 is a schematic structural diagram of an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater according to the present invention;
FIG. 2 is a partially disassembled three-dimensional schematic view of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater according to the present invention;
FIG. 3 is a schematic view of a multi-tube combination of an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater according to the present invention;
FIG. 4 is a schematic diagram of the catalyst distribution form of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, wherein the catalyst layer 8 is loaded on the paddle of the propeller 4;
FIG. 5 is a schematic diagram of the catalyst distribution form of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater according to the present invention; wherein the catalyst layer 8 is fixed on the central shaft 5;
FIG. 6 is a schematic view of the motor installation of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater according to the present invention;
wherein: the method comprises the following steps of 1-ejector, 2-reaction tube, 3-permanent magnet, 31-south permanent magnet, 32-north permanent magnet, 4-rotational flow paddle, 41-cis-rotational flow paddle, 42-counter-rotational flow paddle, 5-central shaft, 6-support frame, 7-locator card, 8-catalyst and 9-motor.
Detailed Description
As shown in fig. 1 and fig. 2, the invention provides an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, which comprises an ejector 1, a reaction tube 2, a permanent magnet 3, a swirl paddle 4, a central shaft 5 and a catalyst layer 8;
the ejector 1 is connected with one end of the reaction tube 2;
the permanent magnets 3 are arranged on two symmetrical sides of the inner wall or two symmetrical sides of the outer wall of the reaction tube 2;
the rotational flow paddle 4 is arranged in the reaction tube 2 and corresponds to the permanent magnet 3 in position;
the paddle of the rotating propeller 4 is provided with a conductive material perpendicular to the magnetic induction line generated by the permanent magnet 3, or the paddle of the rotating propeller 4 is made of the conductive material;
the central axes of the ejector 1, the reaction tube 2, the rotational flow paddle 4 and the central axis 5 are superposed;
the central shaft 5 sequentially penetrates through a plurality of the rotational flow paddles 4, and the rotational flow paddles 4 and the central shaft 5 are integrally placed in the reaction tube 2; two ends of the central shaft 5 are respectively connected with two ends of the reaction tube 2;
the catalyst layer 8 is fixed on one or more of the surface of the propeller 4, the inner wall of the reaction tube 2 and the central shaft 5.
The invention provides an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, which comprises an ejector 1, a reaction tube 2, a permanent magnet 3, a swirl propeller 4, a central shaft 5 and a catalyst layer 8.
The invention provides an electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, which comprises an ejector 1. In the present invention, the ejector 1 is connected to one end of the reaction tube 2. The ejector of the present invention is not particularly limited, and commercially available equipment known in the art may be used. The invention utilizes the ejector 1 to mix the organic wastewater and the ozone to obtain the ozone saturated organic wastewater for subsequent treatment.
The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the invention comprises a reaction tube 2. As an embodiment of the present invention, the reaction tube 2 has a hollow round tube type or cylindrical tubular structure; the reaction tube 2 is vertically or horizontally disposed. The invention has no special limitation on the inner diameter of the reaction tube 2, and when the advanced treatment of the organic wastewater is carried out, the inner diameter of the reaction tube is increased as much as possible on the premise of ensuring that the flow velocity of water flow in the reaction tube 2 can reach the minimum requirement of pushing the rotational flow paddle 4, so that the water capacity in the reaction tube 2 is increased, and the investment cost is saved. As an embodiment of the present invention, the material of the reaction tube 2 is PVC, 304 stainless steel or 316L stainless steel, and the source of the reaction tube is not particularly limited, and commercially available components well known in the art may be selected for assembly or customization; specifically, for example, the pipe and the flange are assembled by using commercially available pipes and flanges; the customization process is not specially limited, and the customization process can meet the conditions. The length, the inner diameter and the outer diameter of the reaction tube are not specially limited, and the reaction tube can be adjusted according to the actual water treatment requirement. In the embodiment of the invention, the reaction tube 2 is a circular tube type structure, and has a length of 8m, an inner diameter of 300mm and an outer diameter of 320 mm.
In the embodiment of the invention, when a plurality of reaction tubes are needed, the reaction tubes are connected with each other by adopting the U-shaped bends, so that the hydraulic retention time can be prolonged, and the central shaft 5 can be prevented from being deformed due to gravity because the reaction tubes 2 are too long. The material and the specific process for the U-bend connection are not particularly limited in the present invention, and may be according to materials and processes well known in the art. The invention utilizes the reaction tube 2 as a reaction vessel for advanced treatment of organic wastewater. In the invention, because the half-life period of ozone in a liquid phase at 20-30 ℃ is about 15-60 min, the length of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater is not as long as possible, the invention preferably obtains the hydraulic retention time according to the actually tested ozone reaction time, and then obtains the length of the device by calculation through a conventional calculation method, for example, tests show that the ozone reaction time is 1h, and the field treatment water amount is 3m3And h, the inner diameter of the reaction tube is 0.3m, and the length of the device is 3/(0.15 × 0.15 × 3.14159.14159) ═ 42.5 m.
The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the invention comprises a permanent magnet 3. As an embodiment of the present invention, the permanent magnets 3 are disposed at both sides of the inner wall or both sides of the outer wall of the reaction tube 2. As an embodiment of the present invention, the permanent magnet 3 has a cylindrical arch structure, and the permanent magnet 3 is closely attached to the reaction tube 2. In an embodiment of the invention, the permanent magnet 3 has an arcuate inner diameter of 320 mm. As an embodiment of the present invention, the permanent magnet 3 includes a south permanent magnet 31 (the magnetic polarity in the arch is south) and a north permanent magnet 32 (the magnetic polarity in the arch is north), and the south permanent magnet 31 and the north permanent magnet 32 have opposite magnetic polarities facing the two faces of the central axis of the reaction tube 2.
As an embodiment of the present invention, when the permanent magnet 3 is disposed on the inner wall of the reaction tube 2, the arched outer diameter of the permanent magnet 3 is the same as the inner diameter of the reaction tube 2, thereby enhancing the magnetic field strength; when the permanent magnet 3 set up in when on the outer wall of reaction tube 2, the arch internal diameter of permanent magnet 3 with the external diameter of reaction tube 2 is the same, guarantees the difficult scale deposit of permanent magnet, and does benefit to the maintenance of carrying out the permanent magnet, maintains the work. The source of the permanent magnet is not specially limited, the permanent magnet can be selected from commercial products or customization which are well known in the field, and the customization process is not specially limited, so that the conditions can be met.
The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the invention comprises a rotational flow paddle 4. As an embodiment of the present invention, the swirling flow propeller 4 is disposed in the reaction tube 2 and corresponds to the permanent magnet 3; the rotational flow propeller 4 comprises a paddle and a central circular column; the paddle of the rotating propeller 4 is provided with a conductive material perpendicular to the magnetic induction lines generated by the permanent magnets 3, or the paddle of the rotating propeller 4 is made of the conductive material, so that the paddle can generate an electromagnetic induction effect when rotating, and is electrified. The conductive material is not specially limited, and can be not oxidized by ozone and can realize conductivity; the conductive material is preferably stainless steel, titanium alloy, ferrochrome or a metal conductive coating, the stainless steel preferably comprises 304 stainless steel and 316L stainless steel, the titanium alloy preferably comprises titanium TA1 or titanium TA2, and the metal coating is preferably a titanium coating. The source of the conductive material is not particularly limited in the present invention, and commercially available materials well known in the art may be selected. When carrying out organic waste water advanced treatment, the rivers promotion of organic waste water whirl oar 4 rotate, conducting material cutting south permanent magnet 31 and north permanent magnet 32 produce the magnetic induction line, and then produce the electric current, and the electric current can strengthen the activity of catalyst layer 8, promotes ozone catalytic oxidation to improve the treatment effeciency.
As an embodiment of the present invention, the swirl paddle 4 is a propeller-shaped structure, the diameter of the swirl paddle 4 is smaller than the inner diameter of the reaction tube 2, the central axis of the swirl paddle 4 is a central circular column, the diameter of the hollow of the central circular column is larger than the diameter of the central axis, and the central axis 5 passes through the hollow of the central circular column. The invention has no special limitation on the specific numerical value of the diameter of the hollow part of the central circular column increased by the diameter of the central shaft, and can ensure that the central shaft can pass through the hollow part of the central circular column. When the organic wastewater is deeply treated, the rotational flow paddle 4 rotates by taking the central shaft 5 as a rotation center under the action of water flow thrust.
As an embodiment of the present invention, the central circular column at the central axis of the propeller 4 is made of an insulating material, so that the blades of the propeller 4 are insulated from each other, and the electricity charged on the blades cannot be conducted with each other (as shown in fig. 2). In the present invention, the insulating material is preferably PVC; the source of the central circular column is not specially limited, and PVC is selected for customization.
As an embodiment of the present invention, the number of the swirling paddles 4 is several, and the adjacent swirling paddles 4 are provided with blades in different directions, so that the twisting directions of the adjacent swirling paddles 4 are opposite, that is, when the water flow applies a thrust, the top view rotating direction of the swirling paddles 4 is a clockwise direction, and the top view rotating direction of the 2 front and rear adjacent swirling paddles 4 of the swirling paddle 4 should be a counterclockwise direction; in the present invention, two adjacent swirl paddles are respectively referred to as a forward swirl paddle 41 and a reverse swirl paddle 42. When carrying out organic waste water advanced treatment, it is adjacent the paddle opposite direction of whirl oar 4, during the rivers of same direction promote promptly, the direction of rotation of adjacent whirl oar 4 is opposite, so can form the opposite direction rotatory rivers to reinforcing transverse shear force does benefit to gas, liquid, solid heterogeneous mixture in the organic waste water, improves contact reaction efficiency.
As an embodiment of the present invention, the distance between adjacent said swirling paddles 4 is at least 1.5 times the width of said swirling paddles 4 to prevent said swirling paddles from stalling due to the influence of the swirling water flow.
The invention has no special limit on the quantity, the blade angle and the solidity of the blades of the rotational flow paddle 4, and can adjust according to the flow rate and the pressure of the on-site water when the organic wastewater is deeply treated. According to one embodiment of the invention, the number of the blades of the rotational flow propeller 4 is 3-6, the blade angle is 15-70 degrees, and the solidity is 0.02-1.5. In the embodiment of the invention, the swirl paddles 4 are of a propeller-shaped structure, the diameter is 280mm, the width is 65mm, 6 blades are arranged, the paddle angle is 30 degrees, the solidity is 1.2, the distance between every two adjacent swirl paddles 4 is at least more than 150mm, more preferably 200mm, 300mm or 400mm, and the hollow diameter of the central circular column at the central axis of each swirl paddle 4 is 5 mm.
The source of the swirling flow propeller 4 is not particularly limited by the invention, and a commercially available product or customization well known in the art is selected, and the customization process is not particularly limited by the invention, so that the above conditions can be met.
The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the invention comprises a central shaft 5. As an embodiment of the present invention, the central shaft 5 sequentially passes through a plurality of the swirling paddles 4, and the swirling paddles 4 and the central shaft 5 are integrally placed in the reaction tube 2; and two ends of the central shaft 5 are respectively connected with two ends of the reaction tube 2. The size of the central shaft is not specially limited, and the central shaft can be adjusted according to actual requirements. In the present invention, the central shaft is preferably a commercially available stainless steel wire or strip; in the embodiment of the present invention, the material of the central shaft 5 is 304 stainless steel bars, and the diameter is 3 mm. The invention utilizes the central shaft 5 to fix the swirl propeller 4, so that the swirl propeller 4 rotates by taking the central shaft 5 as a rotating shaft.
In the invention, the central axes of the ejector 1, the reaction tube 2, the rotational flow paddle 4 and the central axis 5 are superposed.
The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the invention comprises a catalyst layer 8. As an embodiment of the present invention, the catalyst layer 8 is fixed on one or more of the surface of the paddle of the propeller 4, the inner wall of the reaction tube 2 and the central shaft 5, and when the catalyst layer 8 is fixed on the central shaft 5, the catalyst is fixed on the central shaft 5 as a block structure with large porosity, or a cylindrical cage with a diameter of 280mm and a height of 200mm is made by using a stainless steel net, and a commercially available granular catalyst is directly loaded. The preparation process of the block structure is not specially limited, and the block structure can be prepared by direct customized sintering, and can be a cylindrical block with the diameter of 280mm and the height of 200 mm. In the present invention, the catalyst is preferably iron-nickel supported activated carbon, alumina or iron oxide; the particle size of the catalyst is preferably 1-10 mm. The source of the catalyst is not particularly limited in the present invention, and a commercially available ozone oxidation catalyst well known in the art or prepared according to a well-known method may be used. In the embodiment of the invention, the catalyst layer 8 is porous iron oxide, and the particle size of the porous iron oxide is 1-5 mm. According to the invention, the catalyst layer 8 is used for catalyzing the reaction of ozone and water in the organic wastewater to generate hydroxyl radicals with strong oxidizing property, and the hydroxyl radicals are oxidized to remove organic pollutants in the organic wastewater, so that the advanced treatment of the organic wastewater is realized.
As an embodiment of the present invention, the electromagnetic enhanced ozone catalytic oxidation apparatus for advanced treatment of organic wastewater provided by the present invention further comprises 2 support frames 6, as an embodiment of the present invention, the 2 support frames 6 are respectively fixed at two ends of the reaction tube 2 and respectively connected with two ends of the central shaft 5, and a central axis of the support frame 6 coincides with a central axis of the central shaft 5; the support frame 6 is of an axially symmetrical structure, the middle part of the support frame is hollow, and water flows through the hollow part. The size of the support frame 6 is not particularly limited, and the support frame can be adjusted according to the size of the reaction tube 2. The material of the support frame 6 is not particularly limited, and any commercially available material which is not corroded by ozone can be used, such as stainless steel, PVC or titanium; the support frame 6 is preferably a customized product, the customizing process is not specially limited, an axially symmetrical structure can be met, and the middle part of the support frame is hollow. In the embodiment of the invention, the support frame 6 consists of a 304 stainless steel circular ring with the outer diameter of 300mm, the inner diameter of 290mm and the width of 50mm and two 304 stainless steel sheets with the diameter of 290 multiplied by 50mm, wherein the two stainless steel sheets are mutually vertically lapped into a cross shape with axial symmetry and are placed into the stainless steel circular ring for fixation. The invention utilizes the support frames 6 to fix at both ends of the reaction tube 2, so that the central shaft is kept at the center of the reaction tube.
As an embodiment of the invention, the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater further comprises a positioning clamp 7, wherein the positioning clamp 7 is arranged at the rear part of the swirling flow propeller 4 and fixed on the central shaft 5, the number of the positioning clamps 7 is several, and the positioning clamps 7 correspond to the swirling flow propellers 4 one by one; the positioning clamp 7 is superposed with the central axis of the central shaft 5. In the present invention, the positioning clip 7 is fixed on the central shaft 5, and is configured to intercept the swirling propeller 4 and prevent the swirling propeller 4 from moving due to water flow thrust. In the present invention, the locator card is preferably a commercially available wire rope clasp or a commercially available rubber ring. The size of the positioning card 7 is not specially limited, and the positioning card can be adjusted according to actual requirements. In the embodiment of the invention, the positioning clamp 7 is a 304 stainless steel ring with adjustable tightness, and the minimum inner diameter and the minimum outer diameter are respectively 2.5mm and 10 mm.
As an embodiment of the invention, the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater further comprises a motor 9, wherein the motor 9 is connected with the central shaft 5 at the other end of the reaction tube 2. When organic wastewater advanced treatment is carried out, when the flow velocity of water in the electromagnetic enhanced ozone catalytic oxidation device for organic wastewater advanced treatment is low, the flow thrust cannot push the rotational flow paddle 4 to rotate, or the rotational speed of the rotational flow paddle 4 is low, the efficiency of mixing gas, liquid and solid phases in the device is low, the mixing is uneven, and the effect of organic wastewater advanced treatment can be influenced. As an embodiment of the invention, when the reaction tube is too long (generally more than 20m), a motor is arranged at the low rotating speed of the rotational flow paddle.
In the invention, when the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater comprises the motor 9, as one embodiment of the invention, the blades of the adjacent rotational flow paddles 4 have opposite directions, so that stronger transverse shearing force can be generated, heterogeneous mixing of gas, liquid and solid is promoted, and the reaction efficiency is improved, but the water flow thrust cannot be increased by adopting the arrangement; as another embodiment of the invention, the adjacent 4 blades of the rotational flow propeller have the same direction, so that the water flow thrust can be increased, the conditions of insufficient inflow velocity and pressure are compensated, but the out-of-phase mixing effect of the device is relatively poor; as another embodiment of the invention, the front section of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater is that the directions of the blades of the adjacent rotational flow propellers 4 are opposite, and the direction of the blades of the adjacent rotational flow propellers 4 is the same at the rear section, so that the full catalytic oxidation reaction of ozone can be ensured, and the water flow thrust can be increased. The invention adjusts the rotating flow paddle according to the actual situation of the water flow thrust. The length ratio of the front section to the rear end is not specially limited, and the length ratio can be adjusted according to actual requirements.
In the invention, when the electromagnetic enhanced ozone catalytic oxidation device for advanced organic wastewater treatment is horizontally arranged, the reaction tube 2 is longer, the central shaft 5 deforms due to gravity, and the central shaft is vertically arranged when the central shaft cannot be coincident with the reaction tube 2. When a plurality of the organic wastewater advanced treatment electromagnetic enhancement ozone catalytic oxidation devices are connected in a U shape due to actual needs, the devices are horizontally placed, and a gas cavity caused by gravity is avoided due to vertical placement.
The invention provides a method for carrying out advanced treatment on organic wastewater by utilizing the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater, which comprises the following steps:
simultaneously introducing the organic wastewater and ozone into the ejector 1, and mixing to obtain ozone saturated wastewater;
and (3) introducing the ozone saturated wastewater into the reaction tube 2, rotating the magnetic induction lines generated by the cutting permanent magnet 3 by the cyclone paddle 4 to generate current, and under the enhancement effect of the current, catalyzing the reaction of ozone and water by the catalyst layer 8 to oxidize and remove pollutants in the organic wastewater.
The invention leads the organic wastewater and the ozone into the ejector 1 at the same time for mixing to obtain the ozone saturated wastewater. The source of the organic waste water is not particularly limited in the present invention, and any organic waste water known in the art can be used. The process of introducing the organic wastewater and the ozone is not specially limited, and the ozone can be ensured to be saturated in the organic wastewater. The invention has no special limitation on the mixing process, and can ensure that the organic wastewater and the ozone are fully and uniformly mixed.
After the ozone saturated wastewater is obtained, the ozone saturated wastewater is introduced into the reaction tube 2, the rotational flow paddle 4 rotates to cut the magnetic induction lines generated by the permanent magnet 3 to generate current, and under the enhancement effect of the current, the catalyst layer 8 catalyzes the reaction of ozone and water to oxidize and remove pollutants in the organic wastewater. The process of introducing the ozone-saturated wastewater is not particularly limited in the present invention, and the ozone-saturated wastewater can be introduced into the reaction tube 2 by a process well known in the art.
Will ozone saturated waste water lets in behind the reaction tube 2, ozone saturated waste water promotes whirl oar 4 in proper order and rotates, the rotation of whirl oar 4 makes the paddle as the electric conductor cuts the magnetic induction line that is produced by south permanent magnet 31 and north permanent magnet 32 in proper order, and then produce the electric current on the paddle, the activity of electric current reinforcing catalyst layer 8, make catalyst layer 8 catalysis ozone and water reaction generate a large amount of hydroxyl free radicals, the hydroxyl free radical of the strong oxidizing property of production stirs under the horizontal shearing force effect of whirl oar 4, organic pollutant in the waste water is got rid of in the rapid oxidation, generate carbon dioxide and water, with this process circulation, constantly decompose and get rid of the pollutant in the waste water, it is up to standard until the play water quality, accomplish organic waste water advanced treatment.
In the invention, the rotating speed of the rotational flow propeller 4 is preferably more than or equal to 0.5r/s, so that the rotational flow propeller 4 can generate stronger transverse shearing force to water flow, and the advanced treatment of organic wastewater is realized.
In the invention, after the organic wastewater advanced treatment electromagnetic enhanced ozone catalytic oxidation device is adopted for carrying out organic wastewater advanced treatment, the device runs for a long time, and the surface of the permanent magnet 3 needs to be covered and protected (painted with paint or asphalt or covered with a plastic shell or geotextile) to prevent rusting; every two weeks, tap water and ozone are introduced for cyclic cleaning. When the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater has the problems of reduced magnetic field intensity of the permanent magnet 3, scaling at the axis of the cyclone paddle 4, blocked rotation and weakened activity of the catalyst layer 8, stripping the permanent magnet 3 from the tube wall of the reaction tube 2 and magnetizing the permanent magnet; the connection between the ejector 1 and the reaction pipe 2 is disassembled, the cyclone paddle 4, the central shaft 5, the support frame 6 and the positioning clamp 7 are integrally pulled out, all parts are separated, scale is cleaned, the catalyst layer 8 on the surface of the paddle 4 of the cyclone paddle needs to be reloaded, and after the operation is finished, all parts are reinstalled as described above, and the maintenance operation is finished.
When organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device includes motor 9, connects motor 9 in the one end of center pin 5, on whirl oar 4 was fixed in center pin 5, need not to install locator card 7, motor 9 started to drive center pin 5 rotatory, and then drive whirl oar 4 rotatory, realized organic waste water advanced treatment according to above-mentioned process. The invention can solve the problems of insufficient water flow thrust and poor mixing effect by utilizing the device comprising the motor 9.
The present invention is not particularly limited in kind and source of the organic wastewater, and any organic wastewater of a well-known source may be used, and the organic wastewater is preferably derived from organic wastewater produced in food industry, paper industry and leather industry.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Example 1
As shown in fig. 1 and fig. 2, the electromagnetic enhanced ozone catalytic oxidation apparatus for advanced treatment of organic wastewater provided by this embodiment includes an ejector 1, a reaction tube 2, a permanent magnet 3, a swirl paddle 4, a central shaft 5, a support frame 6, a locator card 7, and a catalyst layer 8;
wherein, the reaction tube 2 is made of PVC material and has a circular tube structure, the length is 8m, the inner diameter is 300mm, and the outer diameter is 320 mm;
the permanent magnet 3 is of a cylindrical arch structure, and the inner diameter of the arch is 320 mm; the permanent magnets 3 are divided into two types, wherein one type is an arch-shaped permanent magnet with south magnetic property and is marked as a south permanent magnet 31, and the other type is an arch-shaped permanent magnet with north magnetic property and is marked as a north permanent magnet 32;
the vortex paddles 4 are of a propeller-shaped structure, the diameter is 280mm, the width is 65mm, 6 blades are arranged, the paddle angle is 30 degrees, the solidity is 1.2, the distance between every two adjacent vortex paddles 4 is 300mm, and the hollow diameter of a central circular column at the central axis of each vortex paddle 4 is 5 mm; the blades of the rotational flow propeller 4 are made of 304 stainless steel, and the cylinder at the central axis is made of PVC plastic; the rotating propeller 4 is divided into a forward rotating propeller 41 and a reverse rotating propeller 42 according to different blade directions, the forward rotating propeller 41 rotates clockwise along the water flow direction, the reverse rotating propeller 42 rotates counterclockwise along the water flow direction, and the rotating speed of the rotating propeller is 120 rpm;
the central shaft 5 is made of 304 stainless steel bars and has the diameter of 3 mm;
the support frame 6 consists of a 304 stainless steel circular ring with the outer diameter of 300mm, the inner diameter of 290mm and the width of 50mm and two 304 stainless steel sheets with the diameter of 290 multiplied by 50mm, the two stainless steel sheets are mutually vertical and are lapped into a cross shape with axial symmetry, and the cross shape is put into the stainless steel circular ring for fixation;
the positioning clamp 7 is a 304 stainless steel ring with adjustable tightness, and the minimum inner diameter and the minimum outer diameter are respectively 2.5mm and 10 mm;
the catalyst layer 8 is porous ferric oxide, and the particle size of the porous ferric oxide is 1-5 mm;
the reaction tube 2 is horizontally arranged, the ejector 1 is connected with one end of the reaction tube 2, and the support frames 6 are respectively fixed at two ends of the reaction tube 2; a positioning card 7 is arranged behind the vortex paddles 4, the central shaft 5 sequentially penetrates through 20 vortex paddles 4 and 20 positioning cards 7 respectively, 10 of the 20 vortex paddles 4 are the forward vortex paddles 41, 10 of the reverse vortex paddles 42, the two vortex paddles 4 are alternately and uniformly arranged, and the distance between every two adjacent vortex paddles 4 is 300 mm; integrally installing a rotational flow paddle 4, a positioning clamp 7 and a central shaft 5 into a reaction tube 2, wherein two ends of the central shaft 5 are respectively connected with a support frame 6 fixed at two ends of the reaction tube 2, and the central axes of the ejector 1, the reaction tube 2, the rotational flow paddle 4, the central shaft 5, the support frame 6 and the positioning clamp 7 are superposed; the south permanent magnet 31 and the north permanent magnet 32 are respectively arranged on the symmetrical outer sides of the tube wall of the reaction tube 2, are tightly attached to the reaction tube 2 and correspond to the position of the rotational flow paddle 4 in the reaction tube 2; the catalyst layer 8 is uniformly loaded on the surface of the blade of the swirling flow propeller 4.
The method for carrying out the organic wastewater advanced treatment by using the electromagnetic enhanced ozone catalytic oxidation device for the organic wastewater advanced treatment comprises the following steps: introducing the organic wastewater into an ejector 1, and simultaneously introducing ozone into the ejector 1 for mixing to obtain ozone saturated organic wastewater; the ozone saturated organic wastewater is clamped into a reaction tube 2, a forward-rotating paddle 41 and a reverse-rotating paddle 42 are sequentially and alternately pushed to rotate, a 304 stainless steel paddle is used as an electric conductor to sequentially cut magnetic induction lines generated by a south permanent magnet 31 and a north permanent magnet 32 through rotation of the rotating paddles 4, then current is generated on the paddle, the activity of a catalyst layer 8 loaded on the paddle is enhanced through the current, the catalyst layer 8 catalyzes ozone and water to react to generate a large number of hydroxyl free radicals, organic pollutants in the wastewater are removed through stirring and rapid oxidation under the action of transverse shearing force of the rotating paddles 4, carbon dioxide and water are generated, the process is circulated, the pollutants in the wastewater are continuously decomposed and removed, the effluent quality reaches the standard, and the deep treatment of the organic wastewater is completed.
The reaction tube 2 (length 8m, inner diameter 300mm) of this example was placed horizontally to treat organic wastewater produced in the food industry at a treatment capacity of 3m3In the meantime, the results are shown in Table 1, in comparison with a conventional ozone reaction column (inner diameter: 800mm, height: 6 m).
TABLE 1 comparison of water treatment data of the apparatus of example 1 and conventional ozone reaction column
According to the requirement of on-site treatment, the COD concentration of the effluent is less than 50 mg/L.
As can be seen from table 1, compared with the conventional ozone reaction tower, the oxidation efficiency and ozone utilization rate of the apparatus of the present embodiment are higher than those of the conventional ozone reaction tower, and the energy consumption is low.
Example 2
As shown in FIG. 3, according toExample 1 the specification of the components, the organic wastewater advanced treatment electromagnetic enhanced ozone catalytic oxidation device is horizontally placed, a plurality of reaction tubes 2 are adopted and the reaction tubes 2 are placed in parallel, the reaction tubes 2 are mutually connected by U-shaped bends (the inner diameter of the reaction tube 2 is 400mm, the total length is 20m), the electromagnetic enhanced ozone catalytic oxidation device for organic wastewater advanced treatment with a multi-tube combination is formed, the device is used for organic wastewater advanced treatment according to the method of example 1, and meanwhile, a traditional ozone reaction tower (the inner diameter is 800mm, the height is 6m) is used as a comparison for treating organic wastewater generated in a certain food industry, the treatment capacity is 3m3The specific results are shown in Table 2.
TABLE 2 water treatment data comparison analysis table of the device of this embodiment and the conventional ozone reaction tower
The COD concentration of the effluent is less than 50mg/L according to the requirement of field treatment.
As can be seen from table 2, compared with the conventional ozone reaction tower, the oxidation efficiency and ozone utilization rate of the apparatus of the present embodiment are higher than those of the conventional ozone reaction tower, and the energy consumption is low;
in addition, comparing example 2 with example 1, it can be seen that the ratio of the ozone addition amount to the COD mass in example 1 is 2.24, and example 2 is 1.87, which shows that the utilization rate of ozone in example 2 is increased, that is, the same COD is treated, and less ozone is added, therefore, the device in example 2 can effectively prolong the length of the reaction tube 2, increase the ozone overflowing time, and improve the treatment effect.
Example 3
As shown in fig. 4, the only difference from embodiment 1 is that: the catalyst layer 8 is uniformly fixed on the inner wall of the reaction tube 2.
Example 4
As shown in fig. 5, the only difference from embodiment 1 is that: the catalyst layer 8 is fixed to the central shaft 5.
Example 5
As shown in fig. 6, the present embodiment is different from embodiment 1 only in that; one end of the central shaft 5 is connected with a motor 9, the rotational flow propeller 4 is fixed on the central shaft 5, the positioning clamp 7 is not installed, the motor 9 is started to drive the central shaft 5 to rotate, and then the rotational flow propeller 4 is driven to rotate, and the organic wastewater advanced treatment is carried out according to the method in the embodiment 1.
The device of the embodiment can solve the problems of insufficient water flow thrust (when the rotating speed of the rotational flow paddle is less than 0.5 r/s) and poor mixing effect.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. An electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater is characterized by comprising an ejector (1), a reaction tube (2), a permanent magnet (3), a rotational flow paddle (4), a central shaft (5) and a catalyst layer (8);
the ejector (1) is connected with one end of the reaction tube (2);
the permanent magnets (3) are arranged on two symmetrical sides of the inner wall or two symmetrical sides of the outer wall of the reaction tube (2);
the rotational flow paddle (4) is arranged in the reaction tube (2) and corresponds to the permanent magnet (3);
conductive materials perpendicular to magnetic induction lines generated by the permanent magnets (3) are arranged on blades of the rotary flow propeller (4), or the blades of the rotary flow propeller (4) are made of the conductive materials;
the central axes of the ejector (1), the reaction tube (2), the rotational flow paddle (4) and the central axis (5) are superposed;
the central shaft (5) sequentially penetrates through the plurality of the rotational flow paddles (4), and the rotational flow paddles (4) and the central shaft (5) are integrally placed in the reaction tube (2); two ends of the central shaft (5) are respectively connected with two ends of the reaction tube (2);
the catalyst layer (8) is fixed on one or more of the paddle surface of the rotational flow paddle (4), the inner wall of the reaction tube (2) and the central shaft (5).
2. The advanced organic wastewater treatment electromagnetic enhanced ozone catalytic oxidation device according to claim 1, characterized in that the permanent magnet (3) comprises a south permanent magnet (31) and a north permanent magnet (32); the permanent magnet (3) is of a cylindrical arch structure, and the permanent magnet (3) is tightly attached to the reaction tube (2).
3. The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater as claimed in claim 1, wherein the number of the swirl paddles (4) is several, the adjacent swirl paddles (4) are provided with blades in different directions, so that the twisting directions of the adjacent swirl paddles (4) are opposite, and the two adjacent swirl paddles are respectively a forward swirl paddle (41) and a reverse swirl paddle (42).
4. The device for the advanced treatment of organic wastewater through electromagnetic enhancement and catalytic oxidation of ozone according to claim 1 or 3, characterized in that the swirling flow propeller (4) is of a propeller-shaped structure, the diameter of the swirling flow propeller (4) is smaller than the inner diameter of the reaction tube (2), the central axis of the swirling flow propeller (4) is a central circular column, and the central axis (5) passes through the hollow part of the central circular column.
5. The device for the advanced treatment of the organic wastewater through the electromagnetic enhancement and the catalytic oxidation of the ozone as claimed in claim 4, wherein the number of the blades of the rotational flow paddle (4) is 3-6, the blade angle is 15-70 degrees, and the solidity is 0.02-1.5.
6. The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater as claimed in claim 1, further comprising a support frame (6), wherein the support frame (6) is fixed at two ends of the reaction tube (2) and connected with two ends of the central shaft (5), and the support frame (6) is overlapped with the central axis of the central shaft (5); the support frame (6) is of an axially symmetrical structure, and the middle part of the support frame is hollow.
7. The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater as claimed in claim 1, further comprising a positioning clamp (7), wherein the positioning clamp (7) is arranged at the rear part of the swirling flow propeller (4) and fixed on the central shaft (5); the number of the positioning cards (7) is a plurality, and the positioning cards (7) correspond to the rotating paddles (4) one by one.
8. The electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater as claimed in claim 1, further comprising a motor (9), wherein the motor (9) is connected with the central shaft (5) at the other end of the reaction tube (2).
9. A method for carrying out advanced treatment on organic wastewater by using the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment on organic wastewater as defined in any one of claims 1 to 6, which is characterized by comprising the following steps:
simultaneously introducing the organic wastewater and ozone into an ejector (1) for mixing to obtain ozone saturated wastewater;
and (2) introducing the ozone saturated wastewater into the reaction tube (2), rotating the magnetic induction lines generated by the cutting permanent magnet (3) by the aid of the rotating flow paddle (4), generating current, and catalyzing ozone and water to react by the aid of the catalyst layer (8) under the enhancement effect of the current to oxidize and remove pollutants in the organic wastewater.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113044950A (en) * | 2021-03-11 | 2021-06-29 | 中国矿业大学(北京) | Heterogeneous Fenton reactor |
| CN115814797A (en) * | 2022-12-28 | 2023-03-21 | 桂润环境科技股份有限公司 | Preparation method of ozone catalytic oxidant based on zero-valent iron surface hydroxylation treatment |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113044950A (en) * | 2021-03-11 | 2021-06-29 | 中国矿业大学(北京) | Heterogeneous Fenton reactor |
| CN115814797A (en) * | 2022-12-28 | 2023-03-21 | 桂润环境科技股份有限公司 | Preparation method of ozone catalytic oxidant based on zero-valent iron surface hydroxylation treatment |
| CN115814797B (en) * | 2022-12-28 | 2024-04-19 | 桂润环境科技股份有限公司 | Preparation method of ozone catalytic oxidation agent based on zero-valent iron surface hydroxylation treatment |
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