CN114988557A

CN114988557A - Horizontal tubular catalytic ozone degradation organic wastewater treatment device

Info

Publication number: CN114988557A
Application number: CN202210792885.8A
Authority: CN
Inventors: 梅瑜; 周斌; 姚佳超
Original assignee: Zhejiang Shuren University
Current assignee: Zhejiang Shuren University
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-09-02
Anticipated expiration: 2042-07-05
Also published as: CN114988557B

Abstract

The invention discloses a horizontal tubular catalytic ozonation treatment device for organic wastewater. The device comprises a thick pipe, a storage room, an ozone generating device, a net sleeve and a filler column, wherein the thick pipe is arranged on a waste water pipe, the storage room is communicated with the inlet side of a horizontal thick pipe, and taraxacum fibers are arranged in the storage room; the ozone generating device is communicated with the storage room to generate ozone; the net cover is rotatably arranged in the thick pipe, and the filler columns are rotatably arranged in the thick pipe and used for degrading the flowing organic wastewater by matching dandelion velvet and ozone in the storage room in the flowing process of the organic wastewater. The invention forms a high-efficiency gas-water mixing system, the ozone consumption is greatly reduced, the efficiency of catalytic ozone degradation treatment is greatly improved, the catalyst is always in motion, the surface is not easily covered by pollutants to lose efficacy, the blockage is avoided, and the utilization rate is high.

Description

Horizontal tubular catalytic ozone degradation organic wastewater treatment device

Technical Field

The invention discloses an ozone organic wastewater device, and particularly relates to a horizontal tubular catalytic ozone degradation organic wastewater device.

Background

Ozone has strong oxidizing power, and is mainly used for oxidizing and decomposing refractory organic matters in water in the field of water treatment, so that water is decolored and deodorized, and toxicity is reduced. In the application process, the ozone oxidation technology has the following common problems: (1) the mass transfer effect of ozone and water is poor. Because the solubility of ozone in water is low, the utilization rate of oxygenation is low; (2) ozone oxidation is selective, and has a wide range of reaction rates with numerous organic matters, for example, organic matters containing unsaturated bonds such as carbon-carbon double bonds, carbon-carbon triple bonds and the like can be quickly oxidized by ozone, substances such as saturated alkanes, small molecular organic acids and the like slowly react with ozone, and the instability of the oxidation effect is caused by the difference of water quality. The above two factors make the running cost and investment of the ozone oxidation technology higher, thereby limiting the application of the technology to a certain extent.

The technology for treating wastewater by catalyzing ozone oxidation with the heterogeneous catalyst can utilize the hydroxyl free radical generated by ozone under the action of the catalyst to carry out indirect oxidation. The oxidation capacity of hydroxyl radicals is stronger than that of ozone, the reaction is rapid and non-selective, although the method can ensure a certain treatment effect and reduce the ozone consumption, the method has the problems of large catalyst consumption and high investment cost due to the lack of a high-efficiency gas-water mixing system.

The existing catalytic ozonation device is mainly vertical, generally gas-liquid flows up and down, gas floats upwards in the flowing process, bubbles collide and merge due to the narrow air passage in the floating process, even micro bubbles merge into large bubbles in the rising process to reduce the utilization rate of ozone, and the micro bubbles automatically decompose into oxygen in the continuous rising process due to the self-decomposition effect of ozone, so that the ozone is wasted. In addition, vertical oxidizers tend to be relatively high, and equipment and operating costs are relatively high. Vertical devices also suffer from short circuits due to a uniform path during the ozone flow.

In view of the above, there is a need for an improved catalytic ozonation apparatus to solve the above problems.

Disclosure of Invention

In order to solve the problems in the background technology, the invention provides a horizontal tubular device for treating organic wastewater by catalytic ozonation.

The technical scheme of the invention is as follows:

the device comprises a horizontal type thick pipe, wherein the thick pipe is arranged on a waste water pipe, and organic waste water is discharged into the thick pipe from the waste water pipe;

comprises a storage room, which is communicated with the inlet side of a horizontal thick pipe and is internally provided with taraxacum villi;

comprises an ozone generating device which is communicated with a storage room and is used for generating ozone;

comprises a net cover which is rotatably arranged in a thick pipe and is used for degrading the flowing organic wastewater by matching dandelion wool and ozone in a storage room in the flowing process of the organic wastewater;

the device comprises a filler column which is rotatably arranged in a thick pipe and is used for degrading the flowing organic wastewater by matching dandelion velvet and ozone in a storage room in the flowing process of the organic wastewater.

According to the invention, the dandelion wool is added to guide the combination of ozone and liquid, so that the ozone can effectively degrade the flowing organic wastewater.

The novel tubular pile comprises a plurality of net sleeves and a plurality of packing columns, wherein the net sleeves and the packing columns are arranged at intervals in a thick pipe along the flowing direction.

The two ends of the thick pipe are provided with thin pipes matched with the waste water pipe, the thin pipes on the inlet side are connected with the thick pipe through a throat pipe, a storage room is arranged below the throat pipe, and the ozone generating device is connected with the throat pipe through the storage room.

The diameter of the thin tube is smaller than that of the thick tube, and the diameter of the throat tube is smaller than that of the thin tube.

The net cover comprises a disc, the disc is rotatably arranged on the inner wall of the thick pipe through a groove ring structure, a hole is formed in the center of the disc, a first propeller driven to rotate by the flowing of organic wastewater is arranged at the center of the hole, the first propeller is fixedly connected with the hole of the disc, and a plurality of annular metal net rings arranged concentrically are arranged on the end face of the disc around the hole.

One end of the metal net ring is fixed on the end face of the disc, the other end of the metal net ring extends along the axial direction of the disc, and the larger the diameter of the metal net ring is, the larger the size of the metal net ring along the axial direction is.

The outer peripheral surface of the disc is provided with an annular groove, the inner wall of the thick pipe is fixedly provided with an annular convex ring, and the convex ring is embedded in the groove and is connected through steel balls in a rolling manner, so that the disc cannot move axially and can only rotate circumferentially.

The metal net ring is made of a nickel net, and is formed by calcining the nickel net and oxidizing the surface of the nickel net to form nickel oxide.

The packing column include the shell, the shell passes through the groove ring structure and rotatably installs at the thick pipe inner wall, packing column center is provided with hollow cylinder, through the spoke fixed connection along circumference interval arrangement between hollow cylinder and the packing column inner wall, the second screw is installed at hollow cylinder center, fixed connection between second screw and the hollow cylinder, wear to establish on every spoke between shell and the hollow cylinder and install the packing piece, each packing piece along circumference round has constituted the packing circle, the packing piece in arrange the filler that is used for cooperating ozone degradation organic waste water.

The filler is formed by pressing a mixture of activated carbon loaded copper oxide and ferric oxide.

According to the invention, the dandelion velvet is added, and the surface of the dandelion velvet is always attached with the tiny bubbles due to the hydrophobic characteristic, so that the tiny bubbles are prevented from being easily combined into the big bubbles on one hand, and the bubbles can be prevented from rapidly rising on the other hand, so that the bubbles can move along with the rotation of the dandelion velvet, and the contact time between the bubbles and pollutants in the wastewater is prolonged. .

The invention can form a high-efficiency gas-water mixing system under the rotation of the net sleeve and the packed column, greatly reduces the ozone consumption, greatly improves the efficiency of catalytic ozone degradation treatment, and effectively solves the problems in the prior art.

The invention has the beneficial effects that: (1) the equipment is simple; (2) the catalyst is in motion, and the surface is not easily covered by pollutants and loses efficacy; (3) compared with the common packed tower, the device can not be blocked; (4) ozone flow will not short circuit; (5) ozone escaping from the water surface can be carried into the water again by the taraxacum villi, and the utilization rate of the ozone is high.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a horizontal tubular catalytic ozonation treatment device for organic wastewater according to the present invention;

FIG. 2 is a schematic structural diagram of a net 7 in a horizontal tubular catalytic ozonation treatment device for organic wastewater according to the present invention;

FIG. 3 is a schematic structural diagram of the mesh sleeve 7 and the convex ring 6 in the horizontal tubular catalytic ozonation treatment device for organic wastewater according to the present invention;

FIG. 4 is a schematic diagram of a filler column 8 in a horizontal tubular catalytic ozonation treatment device for organic wastewater.

In the figure: the device comprises a thick pipe 1, a thin pipe 2, a flange 3, a throat pipe 4, a storage room 5, an ozone generating device 6, a net cover 7 and a filler column 8; a disc 71, a hole 72, a first propeller 73, a metal mesh ring 74 and a groove 75; a housing 81, spokes 82, a hollow cylinder 83, a second propeller 84, and a packing ring 85.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the embodied apparatus comprises:

the device comprises a horizontal type thick pipe 1, wherein the thick pipe 1 is arranged on a waste water pipe, a rotatable net sleeve 7 and a rotatable filler column 8 are arranged in the thick pipe 1, and organic waste water is discharged into the thick pipe 1 from the waste water pipe;

comprises a storage room 5 which is communicated with the inlet side of a horizontal thick pipe 1 and is internally provided with taraxacum villi; the storage room 5 is provided with a small door 9 for supplementing and adding taraxacum villi.

Comprises an ozone generating device 6 which is communicated with the storage room 5 and is used for generating ozone;

comprises a net cover 7 which is rotatably arranged in a thick pipe 1 and is used for degrading the flowing organic wastewater by matching dandelion wool and ozone in a storage room 5 in the flowing process of the organic wastewater;

comprises a filler column 8 which is rotatably arranged in a thick pipe 1 and is used for degrading the flowing organic wastewater by matching dandelion velvet and ozone in a storage room 5 in the flowing process of the organic wastewater.

According to the invention, the gas (ozone) among the taraxacum fibers is guided to contact with the liquid for multiple times through the super-hydrophobic effect of the added taraxacum fibers, so that the ozone can effectively degrade the flowing organic wastewater.

The novel pipe fitting comprises a plurality of net sleeves 7 and a plurality of packing columns 8, wherein the net sleeves 7 and the packing columns 8 are arranged at intervals in the flow direction in the thick pipe 1. The two kinds of the components can be arranged in series or alternatively. The net sleeves 7 and the packing columns 8 in the thick pipe 1 are arranged in a plurality of numbers, and can be arranged at intervals one by one or a plurality of net sleeves 7 and a plurality of packing columns 8.

The two ends of the thick pipe 1 are provided with a thin pipe 2 and a flange 3 which are matched with the waste water pipe, and the flange 3 is arranged on the end face of the thin pipe 2 and used for butting the thin pipe 2 to the waste water pipe. Tubule 2 of 1 one end of thick pipe is as the entry, and tubule 2 of the 1 other end of thick pipe is as the export, connects through connecing choke 4 between tubule 2 and thick pipe 1 of inlet side, and 5 between the storing are arranged to 4 below throats, and 5 intussuseption are filled with dry dandelion fine hair between the storing, and 5 external ozone generating device 6 between the storing, and ozone generating device 6 is connected with choke 4 between 5 through the storing.

The diameter of the thin tube 2 is smaller than that of the thick tube 1, and the diameter of the throat tube 4 is smaller than that of the thin tube 2.

As shown in fig. 2, the mesh cover 7 includes a disk 71 with a certain thickness, the disk 71 is rotatably mounted on the inner wall of the thick pipe 1 through a slotted ring structure, the disk 71 and the thick pipe 1 are coaxially arranged, a hole 72 is formed in the center of the disk 71, a first propeller 73 driven to rotate by the flow of organic wastewater is mounted in the center of the hole 72, the first propeller 73 and the inner circumference of the hole 72 of the disk 71 are fixedly connected through radial support rods arranged at intervals along the circumferential direction, and a plurality of annular metal mesh rings 74 with different diameters and arranged concentrically are arranged on the end face of the disk 71 around the hole 72.

The expanded metal ring 74 is fixed to the end face of the disc 71 at one end and extends in the axial direction of the disc 71 at the other end, and the expanded metal ring 74 having a larger diameter has a larger dimension in the axial direction, i.e., a wider width.

As shown in fig. 3, an annular groove 75 is formed in the outer peripheral surface of the disc 71, an annular convex ring 76 is fixedly arranged on the inner wall of the thick pipe 1, and the convex ring 76 is embedded in the groove 75 and is connected in a rolling manner through steel balls 77, so that the disc 71 cannot move in the axial direction but only can rotate in the circumferential direction. Thus, the groove 75 can be matched with a convex ring 76 fixed in the thick pipe 1, so that the net cover 7 is fixed in the thick pipe 1 to limit the left and right movement. A rotatable steel ball 77 is arranged in the gap between the convex ring 76 and the groove 75, and the net sleeve 7 can rotate along the central axis of the thick pipe 1.

The metal mesh ring 74 is made of a nickel mesh, and is formed by calcining the nickel mesh and oxidizing the surface to form nickel oxide.

As shown in fig. 4, the packing column 8 comprises a horizontal short cylindrical shell 81, the shell 81 is rotatably installed on the inner wall of the thick pipe 1 through a slotted ring structure, a hollow cylinder 83 is arranged at the center of the packing column 8, spokes 82 fixedly connected with the inner wall of the hollow cylinder 83 and the inner wall of the packing column 8 through circumferential intervals, a second propeller 84 is installed at the center of the hollow cylinder 83, radial support rods fixedly connected with the inner circumferential surface of the second propeller 84 and the inner circumferential surface of the hollow cylinder 83 through circumferential intervals, packing blocks are installed on each spoke 82 between the shell 81 and the hollow cylinder 83 in a penetrating manner, each packing block along a circumferential circle forms a packing ring 85, and packing used for matching with ozone to degrade organic wastewater is arranged in the packing ring.

Under the above-mentioned structure, packing ring 85 is that whole round is packed and is cut apart into the polylith, and every piece of packing piece activity is worn to establish and is installed on respective spoke 82, and freely slides along spoke 82 for each packing piece can be in gaseous phase and liquid phase junction along the flow of organic waste water and the rotatory floating of packing post 8, realizes the efficient degradation processing. The filler is formed by pressing a mixture of activated carbon loaded copper oxide and ferric oxide.

The groove ring structure between the outer shell 81 of the packing column 8 and the inner wall of the thick pipe 1 and the groove ring structure between the disc 71 and the inner wall of the thick pipe 1 are in the same form, and the packing column 8 is limited to rotate along the central axis of the thick pipe 1 and cannot move along the axial direction.

The working process of the invention is as follows:

during operation, the horizontal tubular catalytic ozone degradation organic wastewater treatment device is connected to one end of the wastewater pipe, the ozone generation device 6 is started, and organic wastewater flows in from the thin pipe 2 and then flows into the thick pipe 1 through the throat pipe 4. When flowing through the throat 4, the flow rate is increased due to the reduction of the diameter, so that low pressure is formed at the throat 4, and the dandelion down in the ozone carrying and storing room 5 provided by the ozone generating device 6 is sucked into the throat 4 through the low pressure to be mixed.

Because the super hydrophobic characteristic of dandelion fine hair, unable direct contact with organic waste water around the dandelion fine hair, the inspiratory ozone of low pressure can be attached to the dandelion fine hair again and organic waste water contact, the bubble of ozone is being carried to the dandelion fine hair, air mass and organic waste water contact, smuggle ozone gas and organic waste water long-time mixing secretly between dandelion fine hair and the organic waste water like this, make ozone can fully contact with organic waste water, greatly increased and organic waste water area of contact, the mixing degree of gaseous phase and liquid phase has been improved.

From this, the bubble of ozone can get into pending organic waste water with the combination of dandelion fine hair together, and the screw at the center of net cover 7 is rotatory under organic waste water's rivers impact, and the dandelion fine hair is caught by the metal mesh ring 74 in the net cover 7 owing to the bubble come-up that carries ozone and is blockked the come-up, and ozone and metal mesh ring 74 can fully contact, and ozone is formed the hydroxyl free radical by catalytic decomposition, organic pollutant in the rapid high-efficient oxidation water.

As the amount of ozone blown increases, the ozone is captured by the taraxacum wool floating on the top of the metal mesh ring 74 and is sufficiently contacted with the metal mesh ring 74 during the rising process. Even if part of ozone gas overflows the water surface, or dandelion velvet and ozone overflow out of the metal mesh ring 74, along with the rotation of the mesh sleeve 7, the ozone gathered at the top of the thick pipe 1 is brought into the water again to continue the reaction by the rotation of the dandelion velvet driven by the metal mesh ring 74.

Ozone is fully stirred in water under the action of the net sleeves 7, then flows through the filler column 8, contacts with the filler flowing into the filler column 8 to generate catalytic action, and continues to degrade organic matters in the organic wastewater. If the velocity of water flow is very fast, rivers promote the rotation of filled column 8, because the effect of centrifugal force, the filled piece of filled ring 85 can slide to the outer circle, not only can reduce the water flow resistance, when the filled piece that slides the outer lane simultaneously rotates 1 upper ends of thick pipe, will with be in the ozone contact of 1 upper end of thick pipe, carry out the degradation reaction again, and the continuous a plurality of filled pieces in 85 outer lanes of filled ring will with the ozone continuous contact of 1 upper end of thick pipe, thereby make full use of all ozone.

If the concentration of the organic matter to be treated is higher or the organic matter to be treated is more difficult to degrade, the number of the net sleeves 7 and the number of the filler columns 8 can be increased.

The amount of the taraxacum villi is changed according to the number of the net sleeves 7, and 5-10 g of taraxacum villi is added into each net sleeve 7.

The wide tube 1 may be provided to be openable and closable for assembly and maintenance.

Dandelion fine hair can add through little door 9 of 5 between the storing, and the dandelion fine hair that gets into thick pipe 1 can decay the degradation by oneself after a period, can regularly supply dandelion fine hair through little door 9.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the above-described contents, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a horizontal tubulose catalysis ozone degradation handles organic waste water device which characterized in that:

the device comprises a horizontal type thick pipe (1), wherein the thick pipe (1) is arranged on a waste water pipe, and organic waste water is discharged into the thick pipe (1) from the waste water pipe;

comprises a storage room (5) which is communicated with the inlet side of a horizontal thick pipe (1) and is internally provided with taraxacum villi;

comprises an ozone generating device (6) which is communicated with a storage room (5) and is used for generating ozone;

comprises a net sleeve (7) which is rotatably arranged in a thick pipe (1) and is used for degrading the flowing organic wastewater by matching with taraxacum wool and ozone in a storage room (5) in the flowing process of the organic wastewater;

comprises a filler column (8) which is rotatably arranged in a thick pipe (1) and is used for degrading the flowing organic wastewater by matching dandelion velvet and ozone in a storage room (5) in the flowing process of the organic wastewater.

2. The horizontal tubular catalytic ozonation treatment organic wastewater device according to claim 1, wherein: the novel pipe fitting comprises a plurality of net sleeves (7) and a plurality of filler columns (8), wherein the net sleeves (7) and the filler columns (8) are arranged at intervals in the flow direction in the thick pipe (1).

3. The horizontal tubular catalytic ozonation treatment organic wastewater device according to claim 1, wherein: thick pipe (1) both ends be provided with tubule (2) with the waste pipe adaptation, connect through connecting choke (4) between tubule (2) and thick pipe (1) of inlet side, between storing (5) are arranged to choke (4) below, and ozone generating device (6) are connected with choke (4) through storing between (5).

4. The horizontal tubular catalytic ozonation treatment device for organic wastewater according to claim 3, characterized in that: the diameter of the thin tube (2) is smaller than that of the thick tube (1), and the diameter of the throat tube (4) is smaller than that of the thin tube (2).

5. The horizontal tubular catalytic ozonation treatment organic wastewater device according to claim 1, wherein: the net cover (7) comprises a disc (71), the disc (71) is rotatably arranged on the inner wall of the thick pipe (1) through a groove ring structure, a hole (72) is formed in the center of the disc (71), a first propeller (73) which is driven to rotate and is driven to rotate is arranged in the center of the hole (72), the first propeller (73) is fixedly connected with the hole (72) of the disc (71), and a plurality of annular metal net rings (74) which are concentrically arranged are arranged on the end face of the disc (71) around the hole (72).

6. The horizontal tubular catalytic ozonation treatment organic wastewater device according to claim 1, wherein: one end of the metal mesh ring (74) is fixed on the end face of the disc (71), the other end of the metal mesh ring extends along the axial direction of the disc (71), and the larger the diameter of the metal mesh ring (74) is, the larger the size of the metal mesh ring along the axial direction is.

7. The horizontal tubular catalytic ozonation treatment device for organic wastewater according to claim 1, characterized in that: the outer peripheral surface of the disc (71) is provided with an annular groove (75), the inner wall of the thick pipe (1) is fixedly provided with an annular convex ring (76), and the convex ring (76) is embedded in the groove (75) and is connected in a rolling manner through steel balls (77) so that the disc (71) cannot move axially and can only rotate circumferentially.

8. The horizontal tubular catalytic ozonation treatment organic wastewater device according to claim 1, wherein: the metal mesh ring (74) is made of nickel mesh, and is formed by calcining and oxidizing the nickel mesh to form nickel oxide on the surface.

9. The horizontal tubular catalytic ozonation treatment organic wastewater device according to claim 1, wherein: filled column (8) include shell (81), shell (81) are rotatably installed at thick pipe (1) inner wall through the groove ring structure, filled column (8) center is provided with hollow cylinder (83), spoke (82) fixed connection through arranging along circumference interval between hollow cylinder (83) and filled column (8) inner wall, second screw (84) are installed at hollow cylinder (83) center, fixed connection between second screw (84) and hollow cylinder (83), wear to establish on every spoke (82) between shell (81) and hollow cylinder (83) and install the filled block, each filled block along circumference round has constituted filled circle (85), filled block in arrange the filler that is used for cooperating ozone degradation organic waste water.

10. The horizontal tubular catalytic ozonation treatment organic wastewater device according to claim 1, wherein: the filler is formed by pressing a mixture of activated carbon loaded copper oxide and ferric oxide.