Ozone reaction tank for sewage treatment system

Abstract

The application discloses an ozone reaction tank for sewage treatment system and relates to the field of sewage treatment technology, which comprises a top-open tank body provided with a water inlet pipe, a water outlet pipe and an ozone inlet pipe, and a sealing device arranged at the top of the tank body, wherein the sealing device comprises a sealing film and two movable pressing rods; the sealing film is used for sealing the tank opening of the tank body, one side of the sealing film is fixedly connected with the top of one side of the tank body, the side of the sealing film away from the fixed side is provided with a winding shaft used for winding the sealing film, the two movable pressing rods are arranged on the two opposite sides of the tank body and are used for pressing the side edges of the sealing film perpendicular to the winding shaft; and the part of the sealing film close to the fixed side is connected with a gas collecting pipe. The application can solve the problem that the equipment in the container for ozone oxidation treatment of sewage is difficult to clean and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment technology, and particularly relates to an ozone reaction tank for a sewage treatment system. BACKGROUND

[0002] With the development of industry, the composition of industrial wastewater is more and more complex and the biodegradability is more and more poor. Most of the industrial wastewater needs to be treated by pre-oxidation or three-stage deep treatment to meet the requirements of water pollution control and wastewater reuse. Ozone, as one of the effective wastewater pre-oxidation and deep treatment raw materials, has a series of advantages such as strong oxidation ability, fast reaction speed, convenient use, no secondary pollution after reaction, and has attracted people's attention.

[0003] The ozone oxidation treatment process of sewage is usually carried out in a closed container, so as to recycle or treat the unreacted ozone. However, the closed sewage ozone reaction container is not convenient to clean, and the ozone aeration device in the ozone treatment container is difficult to maintain and repair. SUMMARY

[0004] In order to solve the problem that the equipment in the container for ozone oxidation treatment of sewage is difficult to clean and maintain, the present application provides an ozone reaction tank for a sewage treatment system.

[0005] The ozone reaction tank for a sewage treatment system provided by the present application adopts the following technical scheme:

[0006] An ozone reaction tank for a sewage treatment system, comprising a pool body with an open top, the pool body is provided with a water inlet pipe, a water outlet pipe and an ozone gas inlet pipe, the top of the pool body is provided with a sealing device, the sealing device comprises a sealing film and two movable pressing rods, the sealing film is used to close the pool opening of the pool body, one side of the sealing film is fixedly connected with the top of one side of the pool body, the side of the sealing film away from the fixed side is provided with a reel, the reel is used to wind the sealing film, the two movable pressing rods are arranged on the two opposite sides of the pool body, and the movable pressing rods are used to press the side edge of the sealing film perpendicular to the reel; the part of the sealing film close to the fixed side is connected with a gas collecting pipe.

[0007] By adopting the above technical scheme, sewage is discharged from the water inlet pipe into the pool body, and ozone is discharged from the ozone inlet pipe into the pool body, so that the ozone is used to oxidize and treat the pollutants in the sewage; when the ozone reaction pool is working, the sealing film can be unwound, so that the sealing film covers the opening of the pool body, the edge of the sealing film away from the fixed side is pressed by the gravity of the reel, and the two side edges of the sealing film perpendicular to the reel are pressed by the movable pressing rod, so that the sealing film hinders the gas discharged after the oxidation reaction in the pool body from escaping into the air, and at the same time, the gas discharged after the reaction in the pool body can be collected and treated through the gas collecting pipe; when the ozone reaction pool needs to be cleaned or maintained, the sealing film can be wound up by the reel, so that the pool body can be cleaned and the facilities in the pool body can be maintained. The sealing film is a film-shaped material, and the winding and unwinding are convenient.

[0008] Optionally, the sealing film is a transparent plastic film.

[0009] By adopting the above technical scheme, the sealing film is a transparent plastic film, so that the staff can observe the reaction conditions of each area in the pool body and the operation conditions of various equipment in the pool body; and when sewage containing pigments needs to be treated, the staff can directly observe the removal conditions of the pigments in the sewage.

[0010] Optionally, the pool body is provided with a gas collecting tank, the gas collecting tank is connected with the gas collecting pipe, the gas collecting tank is provided with an exhaust pipe, the exhaust pipe is connected with a gas pump, the gas pump is used to pump out the gas in the gas collecting tank, the water inlet pipe is connected with a jet device, the jet device is connected with the gas collecting tank through a gas suction pipe, and the jet device is used to suck the gas in the gas collecting tank into the water inlet pipe.

[0011] By adopting the above technical scheme, the main component of the gas generated by the ozone reaction of the pool body is oxygen, and a small amount of ozone is not fully utilized. The gas discharged during the ozone reaction in the pool body is collected into the gas collecting tank, a small part of the gas in the gas collecting tank can be reused by being filled into the sewage in the pool body through the jet device, so as to improve the utilization rate of ozone, and the remaining part of the gas in the gas collecting tank is discharged and treated by the gas pump. The gas pump and the jet device can pump the gas in the gas collecting tank, so as to reduce the pressure in the space between the gas collecting pipe and the sealing film, thereby reducing the gas escape from the pool body.

[0012] Optionally, the gas collecting tank is sequentially provided with a buffer chamber, a standing chamber and a separation chamber along the horizontal direction, the buffer chamber and the standing chamber are separated by a first partition plate, the standing chamber and the separation chamber are separated by a second partition plate, the gas collecting pipe communicates with the lower space of the buffer chamber, the upper part of the first partition plate is provided with a first through hole, the lower part of the second partition plate is provided with a second through hole, the gas suction pipe communicates with the lower part of the separation chamber, and the exhaust pipe communicates with the top of the standing chamber.

[0013] By adopting the technical scheme, the gas discharged from the pool body enters the buffer chamber from the gas collecting pipe, and then enters the standing chamber through the first through hole to stand, so that the ozone with large density in the gas can be separated by sinking, thereby increasing the proportion of ozone in the gas entering the separation chamber through the second through hole, and the ozone in the gas in the gas collecting tank can be fully utilized; the working process of the gas pump can be intermittent, so that the gas in the gas collecting tank can stand during the intermittent process of the gas pump.

[0014] Optionally, the two ends of the movable pressing rod are respectively provided with swing arms, one end of each swing arm away from the movable pressing rod is connected to the top of the pool body through a hinge seat, the swing arm is hinged to the hinge seat, a tension spring is connected between the swing arm and the hinge seat, one end of the tension spring is hinged to the hinge seat, the other end of the tension spring is hinged to the swing arm, the end of the tension spring away from the swing arm is located below the hinged end of the swing arm, and the end of the tension spring connected to the swing arm is located between the two ends of the swing arm; when the movable pressing rod is used to press the sealing film, the tension spring is in a stretched state.

[0015] By adopting the technical scheme, the two ends of the movable pressing rod are provided with swing arms, so that the movable pressing rod can swing; when the movable pressing rod presses the sealing film, the tension spring is in a stretched state, the elastic force of the tension spring can act on the movable pressing rod through the swing arm, so that the elastic force of the tension spring acts on the sealing film, thereby facilitating the guarantee of the sealing property between the two side edges of the sealing film perpendicular to the reel and the top of the pool body. When it is necessary to wind or unwind the sealing film, the movable pressing rod can be rotated to the side of the hinge seat away from the sealing film, so as to facilitate winding or unwinding of the sealing film; when the movable pressing rod is rotated to the side of the hinge seat away from the sealing film, the tension spring is also in a stretched and deformed state, so that the movable pressing rod abuts against the top surface of the pool body, and the position of the movable pressing rod is kept stable.

[0016] Optionally, the edge regions of the two sides of the sealing film perpendicular to the reel are both provided with a sealing coating for abutting against the top plane of the pool body, and the movable pressing rod is located above the sealing coating when the movable pressing rod presses the sealing film.

[0017] By adopting the technical scheme, the edge regions of the two sides of the sealing film perpendicular to the reel abut against the top plane of the pool body through the sealing coating, and the sealing film provided with the sealing coating can be pressed by the movable pressing rod, thereby facilitating the improvement of the sealing property between the sealing film and the top of the pool body.

[0018] Optionally, the two side edges of the sealing film provided with the sealing coating are respectively provided with a plurality of limiting pieces.

[0019] By adopting the technical scheme, the gas escaping from the pool body can lift the sealing film upward, and the peripheral edge of the sealing film moves toward the center of the pool body. The limiting member can hinder the two side edges of the sealing film perpendicular to the shaft from passing through the gap between the movable pressure rod and the top surface of the pool body, thereby facilitating the sealing film to maintain the state of covering the pool opening of the pool body.

[0020] Optionally, the top of the pool body is provided with two winding mechanisms, and the two groups of winding mechanisms are respectively and correspondingly arranged at the two ends of the shaft. The winding mechanism is used to drive the end of the shaft to rotate. The winding mechanism comprises a rack. The top of the pool body is provided with a guide member for guiding the rack. The length direction of the guide member is perpendicular to the axial direction of the shaft. The rack is provided with a lifting sliding seat. The lifting sliding seat is slidably connected with the rack in a direction perpendicular to the top surface of the pool body. The lifting sliding seat is provided with a plurality of friction wheels. The friction wheels are used to abut the upward part of the outer circumferential surface of the shaft. The lifting sliding seat is provided with a winding motor for driving one of the friction wheels to rotate.

[0021] By adopting the technical scheme, the winding mechanism is slidably connected with the top of the pool body in a direction perpendicular to the shaft. When the winding motor drives the friction wheel to rotate, the friction wheel can drive the shaft to rotate through friction, so that the shaft can wind or unwind the sealing film. During the rotation of the shaft, the material surface of the winding part of the sealing film has friction with the material surface of the flat part, so that the winding part of the shaft and the sealing film can roll on the top of the pool body, thereby enabling the winding mechanism to wind or spread the sealing film. With the change of the thickness of the winding sealing film, the height position of the friction wheel changes accordingly. The lifting sliding seat can lift and cooperate with the friction wheel in the above process, and the friction wheel remains in abutment with the outer circumferential surface of the shaft.

[0022] Optionally, the lower part of the rack is provided with a walking wheel set. The walking wheel set comprises a driving wheel, a driven wheel and a walking driving motor. The walking driving motor is used to drive the driving wheel to rotate.

[0023] By adopting the technical scheme, the walking wheel set can drive the rack to move. When the winding mechanism drives the shaft to rotate and unwind, the driving force of the walking wheel set can make the sealing film spread as much as possible. When the winding speed of the walking wheel set and the winding speed of the sealing film are inconsistent during the winding and unwinding of the shaft, the friction wheel or the walking wheel set can adapt by slipping.

[0024] Optionally, the rack is threadedly connected with an adjusting bolt. The adjusting bolt is used to force the lifting sliding seat to move downward.

[0025] By adopting the above technical scheme, the adjusting bolt can force the lifting sliding seat to move downward, and when the sealing film is in the state of being spread flat, the adjusting bolt can force the friction wheel to press the reel, so that the reel presses the sealing film away from the side of the fixed side.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When the ozone reaction tank is working, the sealing film can be unwound to cover the opening of the tank body, and the sealing film can prevent the gas discharged after the oxidation reaction in the tank body from escaping into the air, and the gas discharged from the tank body can be collected and treated through the gas collecting pipe; when the ozone reaction tank needs to be cleaned or the facility needs to be maintained, the sealing film can be wound up by the reel to facilitate cleaning of the tank body and maintenance of the facilities in the tank body.

[0028] 2. The gas discharged during the ozone reaction in the tank body is collected into the gas collecting tank, and a small part of the gas in the gas collecting tank can be injected into the sewage in the tank body through the water inlet pipe by the jet device for reuse, so as to improve the utilization rate of ozone.

[0029] 3. The gas discharged from the tank body enters the buffer chamber through the gas collecting pipe, and then enters the standing chamber through the first through hole for standing, so that the ozone with high density in the gas can be separated by sinking, thereby increasing the ozone concentration of the gas entering the separation chamber through the second through hole, which is beneficial to fully utilizing the ozone in the gas in the gas collecting tank. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic view for embodying the open state of the top of the tank body.

[0031] Figure 2 is a schematic view for embodying the closed state of the top of the tank body.

[0032] Figure 3 is Figure 2 is a partial enlarged view of A in FIG.

[0033] Figure 4 is Figure 2 is a partial enlarged view of B in FIG.

[0034] Figure 5 is Figure 2 is a partial enlarged view of C in FIG.

[0035] Figure 6 is Figure 1 is a sectional view of D-D in FIG.

[0036] Explanation of reference signs: 1, pool body; 2, water inlet pipe; 21, jet device; 211, air suction pipe; 3, water outlet pipe; 31, drainage pump; 4, ozone inlet pipe; 41, tubular microporous aeration device; 5, sealing device; 51, sealing film; 512, sealing coating; 513, limiting piece; 52, gas collecting pipe; 521, flange; 53, movable pressing rod; 54, swing arm; 55, tension spring; 56, hinged seat; 6, winding mechanism; 61, rack; 611, sliding groove; 612, vertical sliding groove; 62, guide piece; 63, walking wheel set; 631, driving wheel; 632, driven wheel; 633, walking driving motor; 64, storage battery; 65, lifting sliding seat; 651, sliding block; 66, friction wheel; 67, winding motor; 68, adjusting bolt; 7, gas collecting tank; 71, buffer chamber; 72, standing chamber; 73, separation chamber; 74, first partition; 741, first through hole; 75, second partition; 751, second through hole; 8, gas pump; 81, exhaust pipe; 9, winding shaft. DETAILED DESCRIPTION

[0037] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The present application is further described in detail.

[0038] The present application discloses an ozone reaction pool for a sewage treatment system. Referring to Figure 1 The ozone reaction pool for the sewage treatment system comprises a pool body 1, the pool body 1 is provided with a water inlet pipe 2, a water outlet pipe 3 and an ozone inlet pipe 4, and the water inlet pipe 2, the water outlet pipe 3 and the ozone inlet pipe 4 are all connected with the side wall of the pool body 1; the bottom of the pool body 1 is provided with a drainage pump 31 for connecting the water outlet pipe 3, and the bottom of the pool body 1 is provided with a tubular microporous aeration device 41 for connecting an ozone gas collecting pipe 52.

[0039] Referring to Figure 2 The pool body 1 is of an open structure, the top of the pool body 1 is provided with a sealing device 5, the sealing device 5 comprises a sealing film 51 and two movable pressing rods 53, the sealing film 51 is a transparent plastic film, which can be a PO film, a PE film or a PVC film, etc., and the sealing film 51 is used for sealing the pool opening of the pool body 1. One side of the sealing film 51 is fixedly attached to the top of one side of the pool body 1, the fixing mode of the sealing film 51 can be an adhesive fixing mode, and the side of the sealing film 51 away from the fixed side is fixedly provided with a winding shaft 9, the winding shaft 9 is used for winding the sealing film 51, and the two movable pressing rods 53 are respectively arranged on the two opposite sides of the pool body 1, and the movable pressing rods 53 are used for pressing the side edges of the sealing film 51 perpendicular to the winding shaft 9. The part of the sealing film 51 close to the fixed side is connected with a gas collecting pipe 52, the gas collecting pipe 52 is a flexible pipe, the gas collecting pipe 52 is communicated with the inner side of the pool body 1, one end of the gas collecting pipe 52 close to the sealing film 51 is provided with a flange-shaped flange 521, and the flange-shaped flange 521 is fixedly attached to the sealing film 51.

[0040] The sealing film 51 of the sealing device 5 can be unfolded to cover the pool opening of the pool body 1 or be wound by the winding shaft 9. When the sealing film 51 is unfolded, the three side edge portions of the sealing film 51 except the fixed side are pressed by the two movable pressing rods 53 and the winding shaft 9, so that the sealing film 51 seals the pool opening of the pool body 1. The gas generated by the ozone reaction in the pool body 1 is discharged for treatment through the gas collecting pipe 52. The unfolding and folding of the sealing film 51 is relatively convenient, which is convenient for the staff to clean the inside of the pool body 1 and to overhaul and maintain the facilities in the pool body 1. In addition, the sealing film 51 is made of transparent material, which is convenient for the staff to observe the ozone reaction in each corner of the pool body 1 and the operation of the equipment in the pool body 1. It is especially convenient to observe the ozone reaction treatment of the sewage containing pigments through the sealing film 51.

[0041] With reference to Figure 3 The two ends of the movable pressing rod 53 are respectively connected with the swing arms 54. The end of the swing arm 54 away from the movable pressing rod 53 is connected to the top of the pool body 1 through the hinge seat 56. The swing arm 54 is hinged to the hinge seat 56. The stretch spring 55 is connected between the swing arm 54 and the hinge seat 56. One end of the stretch spring 55 is rotatably connected with the hinge seat 56. The other end of the stretch spring 55 is rotatably connected with the swing arm 54. The end of the stretch spring 55 connected with the swing arm 54 is located between the two ends of the swing arm 54. The end of the stretch spring 55 away from the swing arm 54 is located below the hinged end of the swing arm 54. When the movable pressing rod 53 is used to press the sealing film 51, the stretch spring 55 is in a stretched state.

[0042] The movable pressing rod 53 can rotate around the hinged end of the swing arm 54. When the movable pressing rod 53 is located on the side of the hinge seat 56 close to the sealing film 51, the stretch spring 55 is in a stretched state. The elastic force of the stretch spring 55 can force the pressing rod 53 to press the sealing film 51. When it is necessary to unfold or fold the sealing film 51, the movable pressing rod 53 can be rotated to the side of the hinge seat 56 away from the sealing film 51. At this time, the stretch spring 55 is also in a stretched state. The elastic force of the stretch spring 55 forces the movable pressing rod 53 to abut against the surface of the top of the pool body 1, so that the position of the movable pressing rod 53 remains stable, thereby facilitating the unfolding and folding of the sealing film 51.

[0043] With reference to Figure 1 The edge regions of the sealing film 51 perpendicular to the two sides of the winding shaft 9 are provided with sealing coatings 512. When the sealing film 51 is unfolded, the sealing coatings 512 face downward, so that the sealing coatings 512 abut against the top plane of the pool body 1. At the same time, when the movable pressing rod 53 presses the sealing film 51, the movable pressing rod 53 is located above the sealing coatings 512, so that the sealing coatings 512 and the top plane of the pool body 1 are more closely attached, which is beneficial to guarantee the sealing effect of the sealing film 51.

[0044] With reference to Figure 3The two side edges of the sealing film 51 provided with the sealing coating 512 are respectively provided with three limiting pieces 513, the limiting piece 513 is a rubber sheet, the limiting piece 513 is adhesively fixed to the surface of the sealing film 51 away from the sealing coating 512, the three limiting pieces 513 located on the same side of the sealing film 51 are sequentially arranged along the edge of the sealing film 51, the limiting piece 513 can hinder the side edge of the sealing film 51 perpendicular to the winding shaft 9 from passing through the gap between the movable pressure rod 53 and the top plane of the pool body 1, so that the two side edges of the sealing film 51 perpendicular to the winding shaft 9 are kept on the top of the pool body 1.

[0045] Referring to Figure 2 and Figure 4 , the top of the pool body 1 is provided with two winding mechanisms 6, the two winding mechanisms 6 are respectively arranged corresponding to the two ends of the winding shaft 9, the winding mechanism 6 is used to drive the end of the winding shaft 9 to rotate, the winding mechanism 6 includes a rack 61, the top of the pool body 1 is provided with a guide 62 for guiding the rack 61, the guide 62 can be a stainless steel wire or a copper wire, the two ends of the stainless steel wire or the copper wire used as the guide 62 can be fixed by binding with a columnar structural member fixed on the top of the pool body 1, the length direction of the guide 62 is perpendicular to the winding shaft 9, the bottom surface of the rack 61 is provided with a sliding groove 611, the sliding groove 611 is a through groove, the sliding groove 611 and the guide 62 are slidably connected along the length direction of the guide 62.

[0046] The lower part of the rack 61 is provided with a walking wheel set 63, the walking wheel set 63 includes a driving wheel 631, a driven wheel 632 and a walking driving motor 633, the rack 61 is provided with a storage battery 64, the storage battery 64 is electrically connected with the motor, the storage battery 64 is used to supply power to the walking driving motor 633, the walking driving motor 633 is used to drive the driving wheel 631 to rotate.

[0047] Referring to Figure 4 and Figure 5 , the rack 61 is provided with a lifting sliding seat 65, the rack 61 is provided with a vertical sliding groove 612, the lifting sliding seat 65 is provided with a sliding block 651 matched with the vertical sliding groove 612, the lifting sliding seat 65 and the rack 61 are slidably connected through the sliding block 651 and the sliding groove in the direction perpendicular to the top plane of the pool body 1, the lifting sliding seat 65 is provided with three friction wheels 66, the three friction wheels 66 are distributed in an isosceles triangle, the friction wheel 66 is used to abut against the upward part of the outer circumferential surface of the winding shaft 9, the lifting sliding seat 65 is provided with a winding motor 67 for driving one of the friction wheels 66 to rotate, the winding motor 67 is electrically connected with the storage battery 64.

[0048] The walking wheel set 63 can drive the winding mechanism 6 to walk along the length direction of the guide 62, and the winding motor 67 drives the friction wheel 66 to rotate by friction force to drive the winding shaft 9 to rotate, so that the winding mechanism 6 can wind or spread the sealing film 51; with the change of the thickness of the sealing film 51 wound by the winding shaft 9, the height position of the friction wheel 66 changes accordingly, and the lifting sliding seat 65 can be lifted to match the height change of the friction wheel 66 in the above process, so that the friction wheel 66 keeps abutting against the outer circumferential surface of the winding shaft 9. When the walking speed of the walking wheel set 63 and the winding speed of the sealing film 51 are inconsistent during the winding and unwinding process of the winding shaft 9, the differential compensation can be realized by slipping of the friction wheel 66 or the walking wheel set 63.

[0049] Referring to Figure 5 , the rack 61 is threadedly connected with an adjusting bolt 68, and the adjusting bolt 68 is used to force the lifting sliding seat 65 to move downward, so that the friction wheel 66 is pressed against the sealing film 51 as far as possible away from one side of the fixed side.

[0050] Referring to Figure 2 and Figure 6 , the outer side of the pool body 1 is provided with a gas collecting tank 7, which is a square tank as a whole. The gas collecting tank 7 is sequentially provided with a buffer chamber 71, a standing chamber 72 and a separation chamber 73 in the horizontal direction. The buffer chamber 71 and the standing chamber 72 are separated by a first partition plate 74, and the standing chamber 72 and the separation chamber 73 are separated by a second partition plate 75. The gas collecting pipe 52 communicates with the lower space of the buffer chamber 71. The upper part of the first partition plate 74 is provided with a first through hole 741, and the lower part of the second partition plate 75 is provided with a second through hole 751. The suction pipe 211 communicates with the upper part of the separation chamber 73, and the exhaust pipe 81 communicates with the top of the standing chamber 72.

[0051] Referring to Figure 1 and Figure 6 , the gas collecting tank 7 is connected with the gas collecting pipe 52, and the gas collecting pipe 52 communicates with the lower part of the buffer chamber 71. The top of the gas collecting tank 7 is provided with an exhaust pipe 81, which communicates with the upper space of the standing chamber 72. The exhaust pipe 81 is connected with the air pump 8, which is used to pump out the gas in the gas collecting tank 7 for treatment. The suction pipe 211 is connected between the gas collecting tank 7 and the jet device 21, and communicates with the lower part of the separation chamber 73. The suction pipe 211 is connected with the side wall of the pool body 1. The jet device 21 is used to suck the gas in the gas collecting tank 7 into the water inlet pipe 2. The pipe diameter of the suction pipe 211 is smaller than that of the exhaust pipe 81.

[0052] The gas discharged from the pool body 1 enters the buffer chamber 71 from the gas collecting pipe 52, then enters the standing chamber 72 through the first through hole 741 to stand, so that the ozone with high density in the gas can be separated by sinking, thereby increasing the ozone concentration of the gas entering the separation chamber 73 through the second through hole 751; part of the gas in the gas collecting tank 7 can enter the sewage in the pool body 1 through the water inlet pipe 2 and the jet device 21 for recycling, and the rest of the gas is discharged and treated by the air pump 8; the working process of the air pump 8 can be intermittent, so that the gas in the gas collecting tank 7 can stand during the intermittent process of the air pump 8.

[0053] The implementation principle of the ozone reaction pool of the sewage treatment system in the embodiment of the application is as follows: when the ozone reaction pool works, the sealing film 51 of the sealing device 5 can cover the opening of the pool body 1, the edge of the sealing film 51 away from the fixed side is pressed by the gravity of the reel 9, and the two side edges of the sealing film 51 perpendicular to the reel 9 are pressed by the movable pressing rod 53, so that the sealing film 51 hinders the gas discharged after the oxidation reaction in the pool body 1 from escaping into the air, and the gas discharged from the pool body 1 can be discharged into the gas collecting tank 7 through the gas collecting pipe 52, part of the gas in the gas collecting tank 7 enters the pool body 1 through the jet device 21 and the water inlet pipe 2 for recycling, and part of the gas is extracted through the exhaust pipe 81 and the air pump 8 for treatment; when the ozone reaction pool needs to be cleaned or the facilities are maintained, the sealing film 51 can be wound up by the reel 9, so as to clean the pool body 1 and maintain the facilities in the pool body 1. The sealing film 51 is a film-shaped material, which is convenient to wind and unwind.

[0054] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. An ozone reaction tank for a sewage treatment system, comprising a top-open tank body (1) provided with a water inlet pipe (2), a water outlet pipe (3) and an ozone gas inlet pipe (4), characterized in that: The top of the pool body (1) is provided with a sealing device (5), the sealing device (5) comprises a sealing film (51) and two movable pressing rods (53), the sealing film (51) is used for closing the pool opening of the pool body (1), one side of the sealing film (51) is fixedly connected with the top of one side of the pool body (1), the side of the sealing film (51) away from the fixed side is provided with a reel (9), the reel (9) is used for winding the sealing film (51), the two movable pressing rods (53) are arranged on the two opposite sides of the pool body (1) respectively, and the movable pressing rods (53) are used for pressing the side edge of the sealing film (51) perpendicular to the reel (9). Two ends of the movable pressing rod (53) are respectively provided with a swing arm (54), one end of the swing arm (54) away from the movable pressing rod (53) is connected with the top of the pool body (1) through a hinge seat (56), the swing arm (54) is hinged with the hinge seat (56), a tension spring (55) is connected between the swing arm (54) and the hinge seat (56), one end of the tension spring (55) is hinged with the hinge seat (56), the other end of the tension spring (55) is hinged with the swing arm (54), one end of the tension spring (55) away from the swing arm (54) is located below the hinged end of the swing arm (54), and one end of the tension spring (55) connected with the swing arm (54) is located between the two ends of the swing arm (54), when the movable pressing rod (53) is used for pressing the sealing film (51), the tension spring (55) is in a tension state. The part of the sealing film (51) close to the fixed side is connected with a gas collecting pipe (52). The top of the pool body (1) is provided with two winding mechanisms (6), two groups of the winding mechanisms (6) are correspondingly arranged at the two ends of the reel (9) respectively, the winding mechanism (6) is used for driving the end of the reel (9) to rotate, the winding mechanism (6) comprises a rack (61), the top of the pool body (1) is provided with a guide (62) for guiding the rack (61), the length direction of the guide (62) is perpendicular to the axial direction of the reel (9), the rack (61) is provided with a lifting sliding seat (65), the lifting sliding seat (65) is slidably connected with the rack (61) in the direction perpendicular to the top surface of the pool body (1), the lifting sliding seat (65) is provided with a plurality of friction wheels (66), the minimum distance between two adjacent friction wheels (66) is smaller than the diameter of the reel (9), the friction wheel (66) is used for abutting against the outer circumferential surface of the reel (9), and the lifting sliding seat (65) is provided with a winding motor (67) for driving one of the friction wheels (66) to rotate.

2. The ozone contact tank for a wastewater treatment system according to claim 1, wherein: The sealing film (51) is a transparent plastic film.

3. The ozone contact tank for a wastewater treatment system of claim 1, wherein: The pool body (1) is provided with a gas collecting tank (7) outside, the gas collecting tank (7) is connected with the gas collecting pipe (52), the gas collecting tank (7) is provided with an exhaust pipe (81), the exhaust pipe (81) is connected with a gas pump (8), the gas pump (8) is used for pumping out the gas in the gas collecting tank (7), the water inlet pipe (2) is connected with a jet device (21), the jet device (21) is connected with the gas collecting tank (7) through a gas suction pipe (211), and the jet device (21) is used for sucking the gas in the gas collecting tank (7) into the water inlet pipe (2).

4. The ozone contact tank for a wastewater treatment system of claim 3, wherein: The gas collecting tank (7) is sequentially provided with a buffer chamber (71), a standing chamber (72) and a separation chamber (73) in the horizontal direction, the buffer chamber (71) and the standing chamber (72) are separated by a first partition plate (74), and the standing chamber (72) and the separation chamber (73) are separated by a second partition plate (75); the gas collecting pipe (52) communicates with the lower space of the buffer chamber (71), the upper part of the first partition plate (74) is provided with a first through hole (741), the lower part of the second partition plate (75) is provided with a second through hole (751), the gas suction pipe (211) communicates with the lower part of the separation chamber (73), and the exhaust pipe (81) communicates with the top of the standing chamber (72).

5. The ozone contact tank for a wastewater treatment system of claim 1, wherein: The edge area of the sealing film (51) perpendicular to both sides of the reel (9) is provided with a sealing coating (512), the sealing coating (512) is used for abutting against the top plane of the pool body (1), when the movable pressing rod (53) presses the sealing film (51), the movable pressing rod (53) is located above the sealing coating (512).

6. An ozone contact tank for a sewage treatment system as claimed in claim 5 wherein: The two side edges of the sealing film (51) provided with the sealing coating (512) are respectively provided with a plurality of limiting pieces (513).

7. The ozone contact tank for a wastewater treatment system of claim 1, wherein: The lower part of the rack (61) is provided with a walking wheel set (63), the walking wheel set (63) includes a driving wheel (631), a driven wheel (632) and a walking driving motor (633), and the walking driving motor (633) is used for driving the driving wheel (631) to rotate.

8. The ozone contact tank for a wastewater treatment system of claim 1, wherein: The rack (61) is screw-connected with an adjusting bolt (68), and the adjusting bolt (68) is used for forcing the lifting sliding seat (65) to move downward.

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