CN212315834U - Electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater - Google Patents
Electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater Download PDFInfo
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- CN212315834U CN212315834U CN202021387421.1U CN202021387421U CN212315834U CN 212315834 U CN212315834 U CN 212315834U CN 202021387421 U CN202021387421 U CN 202021387421U CN 212315834 U CN212315834 U CN 212315834U
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Abstract
The utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device belongs to organic waste water advanced treatment technical field. The basic principle of the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater 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 utility model discloses an increase electromagnetic induction effect, change device structure and operation mode, increased ozone catalytic oxidation's oxidation efficiency, improve ozone utilization ratio, energy saving and consumption reduction.
Description
Technical Field
The utility model relates to an organic waste water advanced treatment technical field especially relates to an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device.
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 with high oxidation efficiency, high ozone utilization rate and low energy consumption is of great significance.
Disclosure of Invention
An object of the utility model is to provide an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device, the device can increase ozone catalytic oxidation's oxidation efficiency, increase ozone utilization ratio, energy saving and consumption reduction.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model 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 utility model 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 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 utility model discloses an increase electromagnetic induction effect, change device structure and operation mode, increased ozone catalytic oxidation's oxidation efficiency, improve ozone utilization ratio, energy saving and consumption reduction. The permanent magnet is arranged in the device, the permanent magnet is distributed with a strong magnetic field, under the inherent thrust rotation action of the organic wastewater water flow, the magnetic induction line is cut through the electric conductor in the vortex paddle to generate current, the current can enhance the catalytic action of the catalyst, the ozone and the water are sufficiently catalyzed to generate hydroxyl radicals, and the oxidation efficiency is increased; the utility model discloses an install the whirl oar structure in the device, the inherent thrust of usable organic waste water rivers is rotatory, produce horizontal shearing force to rivers, and then produce rotatory rivers, can accelerate among the organic waste water, liquid, solid heterogeneous phase mixes, improve catalyst and ozone, the contact efficiency of water and hydroxyl radical and pollutant, produce a large amount of hydroxyl radical fast, and simultaneously, rotatory rivers can improve the contact efficiency of hydroxyl radical and pollutant, make the hydroxyl radical can quick oxidation get rid of the pollutant, improve the utilization ratio of ozone and hydroxyl radical, improve oxidation efficiency, increase the ozone utilization ratio. The whirl oar can make rivers change into rotatory the propulsion, and in traditional aeration method, the air current is for rising perpendicularly, the utility model discloses a rotatory propulsion can accelerate the reaction process, improves the utilization ratio of ozone and hydroxyl free radical, improves ozone catalytic oxidation reaction efficiency, reduces the reaction energy consumption.
Organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device's main part (reaction tube) adopts tubular structure, can conveniently transport and install, can regard as organic waste water's transportation pipeline to erect, practices thrift area.
Each part of the device is 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.
Organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device, principle, simple structure, it is effectual to organic waste water advanced treatment, the operation is stable, area is little, loading and unloading, maintenance are convenient.
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 the 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 according to the present invention, wherein the catalyst layer 8 is loaded on the paddle of the swirling flow paddle 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 utility model 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 utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device, including ejector 1, reaction tube 2, permanent magnet 3, whirl oar 4, center pin 5 and catalyst layer 8.
The utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device includes ejector 1. In the present invention, the ejector 1 is connected to one end of the reaction tube 2. The jet device of the present invention is not particularly limited, and commercially available devices known in the art may be used. The utility model discloses utilize ejector 1 to mix organic waste water and ozone, obtain ozone saturation organic waste water, carry out subsequent processing.
The utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device includes reaction tube 2. As an embodiment of the present invention, the reaction tube 2 is a hollow round tube or cylindrical tubular structure; the reaction tube 2 is vertically or horizontally disposed. The utility model discloses it is right the internal diameter of reaction tube 2 does not have special injecive, when carrying out organic waste water advanced treatment, is guaranteeing the velocity of flow can reach the promotion in the reaction tube 2 under the prerequisite of the minimum requirement of whirl oar 4, increase as far as possible the reaction tube internal diameter, thereby increase the water capacity practices thrift investment cost in the reaction tube 2. 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 parts 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 utility model discloses it is right the process of customization does not have special injecing, can satisfy above-mentioned condition can. The utility model discloses it is right length, internal diameter and the external diameter of reaction tube do not have special injecing, according to the actual water demand of handling adjust can. In the embodiment of the present invention, the reaction tube 2 is a circular tube structure with a length of 8m, an inner diameter of 300mm and an outer diameter of 320 mm.
The utility model discloses an in the embodiment, when needing a plurality of reaction tubes, adopt the curved interconnect of U type between the reaction tube, can increase water conservancy dwell time, also can avoid simultaneously because of 2 overlengths of reaction tube, center pin 5 produces deformation because of gravity. The utility model discloses it does not have special restriction to the used material of U type curved connection and concrete process, according to the material and the process that are known in the art can. The utility model discloses utilize reaction tube 2 as organic waste water advanced treatment's reaction vessel. In the utility model discloses in, because the half-life of ozone in 20 ~ 30 ℃ liquid phase is about 15 ~ 60min, consequently organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device's length is not longer better, the utility model discloses it obtains water conservancy dwell time to prefer the ozone reaction time according to actual test, then calculates the length that obtains the device through conventional calculation method, for example, the test finds that ozone reaction time is 1h, and the field treatment water yield 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) ═ 42.5 m.
The utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device includes permanent magnet 3. As an embodiment of the present invention, the permanent magnet 3 is disposed on both sides of the inner wall symmetry or both sides of the outer wall symmetry of the reaction tube 2. As an embodiment of the present invention, the permanent magnet 3 is a cylindrical arch structure, and the permanent magnet 3 and the reaction tube 2 are closely attached. In the embodiment of the present invention, the inner diameter of the arch of the permanent magnet 3 is 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 pole) and a north permanent magnet 32 (the magnetic polarity in the arch is north pole), the south permanent magnet 31 and the north permanent magnet 32 face the magnetic polarities of the two faces of the central axis of the reaction tube 2 are opposite.
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 utility model discloses it is right the source of permanent magnet does not have special injecing, chooses for use the well-known product sold in the field or the customization all can, the utility model discloses it is right customized process does not have special injecing, can satisfy above-mentioned condition can.
The utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device includes whirl oar 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 utility model has no special limitation on the conductive material, and can not be oxidized by ozone and 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 of the present invention is not particularly limited, and commercially available products 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 swirling flow propeller 4 is 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, the hollow-out diameter of the central circular column is larger than the diameter of the central shaft, and the central shaft 5 is passed through the hollow-out of the central circular column. The utility model discloses it is right the diameter ratio of the fretwork of center ring post the specific numerical value of the diameter increase of center pin does not have special injecing, can guarantee that the center pin passes from the fretwork department of center ring post can. 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 blades cannot be conducted with each other (as shown in fig. 2). In the present invention, the insulating material is preferably PVC; the utility model discloses it is right the source of center ring post does not have special injecing, chooses for use PVC to customize can.
As an embodiment of the present invention, the number of the swirling propellers 4 is several, and the adjacent swirling propellers 4 are provided with blades in different directions, so that the twisting directions of the adjacent swirling propellers 4 are opposite, that is, when the water flow is pushed, the overlooking rotating direction of the swirling propeller 4 is clockwise, and the overlooking rotating direction of the 2 swirling propellers 4 adjacent to each other in front and back of the swirling propeller 4 should be counterclockwise; in the present invention, two adjacent swirl paddles are respectively marked 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 vortex paddles 4 is at least 1.5 times the width of the vortex paddles 4, so as to prevent the vortex paddles from stopping due to the influence of the rotating water flow.
The utility model discloses it is right paddle quantity, paddle angle and the real degree of whirl oar 4 do not have special injecing, when carrying out organic waste water advanced treatment adjust according to on-the-spot water velocity of flow and pressure can. As an embodiment of the utility model, the paddle quantity of whirl oar 4 is 3 ~ 6 pieces, and the paddle angle is 15 ~ 70 °, and the solidity is 0.02 ~ 1.5. In the embodiment of the utility model, whirl oar 4 is propeller-shaped structure, and diameter 280mm, width 65mm, 6 paddles, paddle angle 30, solidity 1.2, adjacent distance between whirl oar 4 is > 150mm at least, more preferably 200mm, 300mm or 400mm, the diameter of the fretwork of the central ring post of axis department of whirl oar 4 is 5 mm.
The utility model discloses it is right the source of whirl oar 4 does not have special restriction, chooses for use the well-known commercial product in this field or customization for use, the utility model discloses it is right customized process does not have special restriction, can satisfy above-mentioned condition can.
The utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device includes center pin 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 utility model discloses it is right the size of center pin does not have special injecing, adjust according to the actual demand can. In the utility model, the central shaft is preferably made of stainless steel wire or stainless steel strip sold in the market; 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 utility model discloses utilize 5 fixed whirl oars 4 of center pin for whirl oar 4 uses center pin 5 to rotate as the rotation axis.
The utility model discloses in, the axis coincidence of ejector 1, reaction tube 2, whirl oar 4 and central shaft 5.
The utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device includes catalyst layer 8. As an embodiment of the present invention, the catalyst layer 8 is fixed on one or more of the paddle surface of the swirling flow paddle 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 by a massive structure with large porosity, or a cylindrical mesh cage with a diameter of 280mm and a height of 200mm is made by a stainless steel mesh, and the commercially available granular catalyst is directly loaded. The utility model discloses it is right the preparation process of massive structure does not have special restriction, directly the customization sintering can, specifically can be diameter 280mm, high 200 mm's cylinder block. 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 known in the art may be used or may be prepared according to a known method. In the embodiment of the present invention, the catalyst layer 8 is porous iron oxide, and the particle size thereof is 1-5 mm. The utility model discloses utilize ozone and water reaction among the 8 catalysis organic waste water of catalyst bed, produce the hydroxyl free radical of strong oxidizing property, organic pollutant among the organic waste water is got rid of in the oxidation of hydroxyl free radical, realizes the advanced treatment to organic waste water.
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 a support frame 6, as an embodiment of the present invention, the number of the support frames is 2, the 2 support frames 6 are respectively fixed at two ends of the reaction tube 2 and are respectively connected with two ends of the central shaft 5, and the central axis of the support frame 6 coincides with the 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 utility model discloses it is right the size of support frame 6 does not have special injecing, according to reaction tube 2 the size adjust can. The utility model has no special limitation on the material of the support frame 6, and can be made of any commercially available material which is not corroded by ozone, such as stainless steel, PVC or titanium; the preferred customization product of support frame 6, the utility model discloses it is right the process of customization does not have special injecing, can satisfy the axial symmetry structure, and the mid portion fretwork can. In the embodiment of the present invention, the supporting frame 6 is composed of a 304 stainless steel ring with an outer diameter of 300mm, an inner diameter of 290mm, and a width of 50mm and two 304 stainless steel sheets with a diameter of 290 × 50mm, wherein the two stainless steel sheets are perpendicular to each other and form a cross shape with axial symmetry, and are fixed in the stainless steel ring. The utility model discloses utilize support frame 6 to be fixed in 2 both ends of reaction tube make the center pin keep the position at the reaction tube center.
As an embodiment of the utility model, the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater provided by the utility model further comprises a positioning card 7, wherein the positioning card 7 is arranged at the rear part of the rotational flow propeller 4 and fixed on the central shaft 5, the number of the positioning cards 7 is several, and the positioning cards 7 correspond to the rotational flow propellers 4 one by one; the positioning clamp 7 is superposed with the central axis of the central shaft 5. The utility model discloses in, locator card 7 is fixed in on the center pin 5, be used for the interception whirl oar 4 prevents whirl oar 4 removes because of water thrust. In the present invention, the positioning clip is preferably a commercially available wire rope clip or a commercially available rubber ring. The utility model discloses it is right the size of locator card 7 does not have special injecing, adjust according to the actual demand can. In the embodiment of the present invention, the positioning clip 7 is a 304 stainless steel ring with adjustable tightness, and the minimum inner diameter and the minimum outer diameter are 2.5mm and 10mm respectively.
As an embodiment of the utility model, the utility model provides an organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device still includes motor 9, motor 9 links to each other with the center pin 5 of the 2 other ends of reaction tube. When carrying out organic waste water advanced treatment, work as rivers velocity of flow in the organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device is lower, and rivers thrust can not promote when the whirl oar 4 is rotatory, perhaps when the 4 rotational speeds of whirl oar are lower, and gas, liquid, solid heterogeneous mixing efficiency in the device are low, mix inhomogeneous, can influence organic waste water advanced treatment effect, the utility model discloses set up motor 9, can guarantee the rotational speed of whirl oar, be fixed in the whirl oar 4 simultaneously on the center pin 5, need not install locator card 7 (as shown in figure 6), motor 9 drives the rotation of center pin 5, and then drives whirl oar 4 rotatory to solve rivers thrust not enough, the poor problem of mixed effect. As an embodiment of the present invention, when the reaction tube is too long (generally greater than 20m), the motor is disposed at the low rotation speed of the swirl paddle.
In the utility model, when the electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater comprises the motor 9, as one embodiment of the utility model, the adjacent 4 blades of the rotational flow paddle have opposite directions, which can generate stronger transverse shearing force to promote the mixing of gas, liquid and solid phases and improve the reaction efficiency, but the arrangement can not increase the water flow thrust; as another embodiment of the utility model, the adjacent 4 blades of the rotational flow paddle have the same direction, which can increase the water flow thrust and make up the situation of insufficient water inflow velocity and pressure, but the device has relatively poor out-phase mixing effect; as the utility model discloses a further embodiment, organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device's anterior segment is 4 paddle opposite directions of adjacent whirl oar, and the back end is the same for 4 paddle directions of adjacent whirl oar, can enough guarantee that ozone catalytic oxidation reaction is abundant, can increase water flow thrust again. The utility model discloses the actual conditions according to water thrust adjusts the whirl oar. The utility model discloses it is right the length ratio of anterior segment and rear end does not have special injecing, adjust according to the actual demand can.
The utility model discloses in, work as when organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device level was placed, reaction tube 2 is longer, center pin 5 produces deformation because of gravity, can not guarantee the axis with when reaction tube 2 coincides, should adopt to place perpendicularly. 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.
Utilize organic waste water advanced treatment electromagnetism reinforcing ozone catalytic oxidation device carries out organic waste water advanced treatment's method, including following step:
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 utility model discloses let in organic waste water and ozone simultaneously in ejector 1, mix, obtain ozone saturated waste water. The utility model has no special limitation on the source of the organic wastewater, and the organic wastewater with the source well known in the field can be used. The utility model discloses to letting in organic waste water and ozone's process does not have special injecing, can guarantee that ozone reaches the saturation in organic waste water can. The utility model discloses it is right the process of mixing does not have special injecing, can guarantee organic waste water and ozone intensive mixing can.
After obtaining ozone saturated waste water, the utility model discloses will ozone saturated waste water lets in reaction tube 2, and 3 magnetic induction lines that produce of cutting permanent magnet are rotated to whirl oar 4, produce the electric current, and under the reinforcing effect of electric current, 8 catalytic ozone of catalyst bed and water reaction, the pollutant among the organic waste water is got rid of in the oxidation. The utility model discloses to letting in the process of ozone saturated waste water does not have special restriction, adopt the well-known process in this field can let in ozone saturated waste water reaction tube 2 can.
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.
The utility model discloses in, the rotational speed of whirl oar 4 is preferred to be greater than or equal to 0.5r/s, can make whirl oar 4 produces stronger transverse shear force to rivers, realizes organic waste water advanced treatment.
In the utility model, after the organic wastewater advanced treatment electromagnetic enhanced ozone catalytic oxidation device is adopted for 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 corrosion; 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 utility model discloses the device including motor 9 is utilized and the problem that rivers thrust is not enough, the mixed effect is poor can be solved.
The utility model discloses it is not special restriction to the kind and the source of organic waste water, and the organic waste water of well known source all can, organic waste water is preferred to be derived from the organic waste water that food industry, paper industry and leather industry produced.
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 embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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 to the specification of the components described in example 1, the electromagnetic enhanced ozone catalytic oxidation apparatus for advanced treatment of organic wastewater is horizontally arranged, a plurality of reaction tubes 2 are arranged in parallel, the reaction tubes 2 are connected with each other by U-shaped bends (the inner diameter of the reaction tube 2 is 400mm, the total length is 20m), and the electromagnetic enhanced ozone catalytic oxidation apparatus for advanced treatment of organic wastewater with a multi-tube combination is formed, and the apparatus is used for advanced treatment of organic wastewater 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 produced by certain food industry, and the treatment amount 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, a plurality of 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 (8)
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).
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