Wastewater treatment and cyclic utilization system

Abstract

The invention discloses a wastewater treatment and cyclic utilization system, which is provided with an air flotation releaser, the air flotation releaser comprises a shell which is of a hollow structure, and one end of the shell is a connector with a thread; the extension part is integrally formed with the shell and is provided with a plurality of outlets which are circumferentially distributed at equal intervals; the multiple wire harnesses are arranged at the multiple outlets respectively, the two ends of the wire harnesses are located at the two ends of the outlets respectively, and the wire harnesses are attached to the inner walls of the outlets; wherein the cross section of the wire harness is circular, and the wire harness is always attached to the inner wall of the outlet, linearly abuts against the inner wall of the outlet and can rotate along the virtual central axis of the inner wall to scrape suspended solids attached to the inner wall of the outlet. When air-dissolved water penetrates through the guide hole, pressure is quickly reduced and released, a large number of micro-bubbles are formed, meanwhile, component force in the horizontal direction is applied to the inner wall of the guide hole, the driving disc starts to rotate, the rotating disc synchronously rotates in the same direction, the rotating ring connected with the rotating disc in a meshed mode starts to oppositely rotate at a high speed, and the fan blades rotate at a high speed; downward force is applied to the sewage located in the outlet.

Description

Technical Field

[0001] The invention relates to the technical field of industrial wastewater treatment, and in particular to a wastewater treatment and recycling system. Background Art

[0002] Industrial wastewater has complex composition and contains toxic and harmful substances. Discharging untreated industrial wastewater into water bodies will cause water pollution.

[0003] Flotation is a method of treating industrial wastewater. Air or other gases are introduced into the wastewater to generate a large number of tiny bubbles, which cause suspended matter or hydrophobic substances in the wastewater to attach to the bubbles and float to the water surface along with the bubbles to form scum, which is then removed. It has a better treatment effect on oily wastewater and wastewater containing highly hydrophobic organic matter, and can effectively remove oil, suspended particles and other substances in the wastewater.

[0004] The flotation releaser is a key device in the flotation method. Its function is to release the gas in the pressurized dissolved air water in the form of microbubbles, thereby realizing solid-liquid separation. The wastewater has a high concentration of suspended solids, and the flotation releaser is in industrial wastewater for a long time, which will cause the suspended solids to adhere to the inner wall of the outlet of the flotation releaser, which is easy to cause blockage, resulting in the obstruction of the discharge of microbubbles in subsequent work and poor treatment effect. The existing methods for dealing with outlet blockage are usually chemical cleaning and physical cleaning. Chemical cleaning is to use acidic or alkaline solutions to flush and soak the scale to react respectively. Physical cleaning is to disassemble the flotation releaser and then use hooks and tweezers to remove the blockage. Summary of the invention

[0005] The purpose of the present invention is to provide a wastewater treatment and recycling system, which forms an outlet inner wall of a flotation releaser used for treating industrial wastewater.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A wastewater treatment and recycling system, having an air flotation releaser, comprises:

[0008] The shell is a hollow structure, one end of which is a threaded interface;

[0009] An extension portion, formed integrally with the housing, having a plurality of outlets arranged equidistantly around the circumference;

[0010] A plurality of wire harnesses are respectively arranged at a plurality of outlets, with two ends of the wire harnesses respectively located at two ends of the outlets, and the wire harnesses are in contact with the inner wall of the outlets;

[0011] The cross section of the wire harness is circular, the wire harness always fits the inner wall of the outlet and is in linear conflict with the inner wall of the outlet, and can rotate along the virtual central axis of the inner wall to scrape off suspended matter adhered to the inner wall of the outlet.

[0012] Preferably, the flotation releaser also includes a driving disk located inside the shell, the driving disk is fixedly sleeved with a support ring, an annular groove is provided on the inner wall of the shell, the support ring is adapted to the annular groove, the support ring is located inside the annular groove and is slidably connected to the inner wall of the annular groove, so that the driving disk can rotate inside the shell, and a plurality of guide holes are provided on the driving disk, the guide holes are obliquely arranged on the driving disk and pass through both sides of the driving disk, and the dissolved air water entering the shell through the interface passes through each guide hole.

[0013] Preferably, the driving disk is coaxially fixedly connected to the rotating shaft, the rotating shaft is fixedly connected to the rotating disk, the rotating disk has a channel, components for binding the wire harness are arranged at both ends of the outlet, and the components for binding the wire harness are arranged for transmission with the rotating disk so that the components for binding the wire harness rotate synchronously with the rotating disk.

[0014] Preferably, the components for binding the wiring harness include two fixed plates respectively located at the two ends of the outlet, the fixed plates are fixedly connected to the folding plates, the folding plates are connected to the extension part of the shell, the fixed plates are fixedly connected to the limiting ring, a swivel is provided on one side of the fixed plate, a limiting groove is provided on the swivel, the limiting groove and the limiting ring are slidingly connected, the two ends of the wiring harness are respectively connected to the outer edges of the two swivels, the outer edge diameter of the swivel is larger than the outlet diameter, one of the fixed plates is provided with circumferentially arranged driven teeth on the outer edge, and the rotating disk is provided with circumferentially arranged active teeth on the outer edge, so that the outer edge of the rotating disk is meshed and connected with the outer edge of the fixed plate.

[0015] Preferably, a guide tube is fixedly provided on the swivel, and the guide tube is a hollow structure. One end of the guide tube passes through the swivel and is flush with the outer edge of the swivel, and the other end extends toward the conversion center and is vertically bent downward at the center. The wiring harness is connected at both ends, and the wiring harness passes through the two guide tubes at both ends of the outlet. A floating plate is fixedly provided at the position of the wiring harness that coincides with the virtual central axis of the swivel, and the floating plate is located inside the outlet, and the diameter of the floating plate is smaller than the outlet diameter.

[0016] Preferably, a receiving groove is provided in the extension portion of the shell, the folding plate is located inside the receiving groove and is slidably connected to the inner wall of the receiving groove, a plurality of fan blades are fixedly arranged on the inner ring of the rotating ring, and the plurality of fan blades are equidistantly arranged around the inner ring of the rotating ring.

[0017] Preferably, it also includes:

[0018] A treatment tank having a reaction zone, an air flotation contact zone and a sludge zone;

[0019] A foam scraping device, arranged above the treatment tank;

[0020] a clear water tank connected to the air flotation contact area;

[0021] The dissolved air tank and the pump body are respectively arranged on the treatment tank and the clean water tank;

[0022] Among them, the scraper device scrapes the suspended matter floating in the air flotation contact area to the sludge area, and the treated clean water in the air flotation contact area flows to the clean water tank. The clean water in the clean water tank is lifted by the pump body and mixed in the dissolved air tank and the compression space to produce dissolved air water containing saturated air.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the present invention, when dissolved air water passes through the guide hole, it is quickly decompressed and released to form a large number of microbubbles, and at the same time, a component force in the horizontal direction is applied to the inner wall of the guide hole, so that the driving disk starts to rotate, the rotating disk rotates synchronously in the same direction, and the rotating ring meshing with the rotating disk starts to rotate in the opposite direction at a high speed, so that the fan blades rotate at a high speed, and a downward force is applied to the sewage in the outlet, so that the rotating ring moves up, and the inner wall of the outlet can be scraped and decontaminated by the wiring harness. At the same time, when the flotation releaser is not in working state, the rotating ring automatically moves down to cover the outlet, so as to avoid more contact between the sewage rich in suspended matter and the inside of the flotation releaser. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of an air flotation releaser in a wastewater treatment and recycling system proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of an air flotation releaser in a wastewater treatment and recycling system proposed by the present invention;

[0027] Figure 3 A schematic diagram of the structure of one of the guide holes of a driving disk in a wastewater treatment and recycling system proposed by the present invention;

[0028] Figure 4 A schematic diagram of the connection structure between a component for binding a wire harness and a housing in a wastewater treatment and recycling system proposed by the present invention;

[0029] Figure 5 A schematic diagram of the structure of components of a binding harness in a wastewater treatment and recycling system proposed by the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of channels and outlets in a wastewater treatment and recycling system proposed by the present invention;

[0031] Figure 7 This is a structural schematic diagram of a wastewater treatment and recycling system proposed by the present invention.

[0032] In the figure: 1. shell; 2. extension part; 3. wiring harness; 4. drive disk; 5. ring groove; 6. guide hole; 7. rotating shaft; 8. rotating disk; 9. channel; 10. fixed plate; 11. folding plate; 12. limiting ring; 13. rotating ring; 14. limiting groove; 15. driven latch; 16. active latch; 17. guide tube; 18. floating plate; 19. containing tank; 20. fan blade; 21. treatment tank; 22. reaction zone; 23. air flotation contact zone; 24. sludge zone; 25. scraper device; 26. clean water tank; 27. dissolved air tank; 28. pump body; 29. ​​outlet; 30. support ring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1 -Attached Figure 7 , a wastewater treatment and recycling system, having an air flotation releaser, comprising:

[0035] The housing 1 is a hollow structure, one end of which is a threaded interface;

[0036] The extension portion 2 is formed integrally with the housing 1 and has a plurality of outlets 29 arranged equidistantly around the circumference;

[0037] A plurality of wire harnesses 3 are respectively arranged at a plurality of outlets 29, with two ends of the wire harnesses 3 respectively located at two ends of the outlets 29, and the wire harnesses 3 are in contact with the inner wall of the outlets 29;

[0038] The cross section of the wire harness 3 is circular, the wire harness 3 always fits the inner wall of the outlet 29 and is in linear contact with the inner wall of the outlet 29 , and can rotate along the virtual central axis of the inner wall to scrape off the suspended matter adhered to the inner wall of the outlet 29 .

[0039] The flotation releaser also includes a driving disk 4 located inside the shell 1, and the driving disk 4 is fixedly sleeved with a support ring 30. The inner wall of the shell 1 is provided with an annular groove 5, and the support ring 30 is adapted to the annular groove 5. The support ring 30 is located inside the annular groove 5 and is slidably connected to the inner wall of the annular groove 5, so that the driving disk 4 can rotate inside the shell 1. The driving disk 4 is provided with a plurality of guide holes 6, and the guide holes 6 are obliquely arranged on the driving disk 4 and pass through both sides of the driving disk 4. The dissolved air water entering the shell 1 through the interface passes through each guide hole 6.

[0040] The driving disk 4 is coaxially fixedly connected to the rotating shaft 7, and the rotating shaft 7 is fixedly connected to the rotating disk 8. The rotating disk 8 has a channel 9 for guiding the dissolved gas water passing through the guide hole 6 to the direction of the outlet 29. Components of the binding wire harness 3 are arranged at both ends of the outlet 29. The components of the binding wire harness 3 are arranged for transmission with the rotating disk 8, so that the components of the binding wire harness 3 and the rotating disk 8 rotate synchronously.

[0041] The components of the binding wire harness 3 include two fixed plates 10 respectively located at the two ends of the outlet 29, the fixed plate 10 is fixedly connected to the folding plate 11, the folding plate 11 is connected to the extension part 2 of the shell 1, the fixed plate 10 is fixedly connected to the limiting ring 12, a swivel 13 is provided on one side of the fixed plate 10, the swivel 13 has a limiting groove 14, the limiting groove 14 and the limiting ring 12 are slidingly connected, the two ends of the wire harness 3 are respectively connected to the outer edges of the two swivels 13, the outer edge diameter of the swivel 13 is larger than the caliber of the outlet 29, one of the fixed plates 10 is provided with a circumferentially arranged driven gear 15 on the outer edge, and the outer edge of the rotating disk 8 is provided with a circumferentially arranged active gear 16 on the outer edge, so that the outer edge of the rotating disk 8 is meshed and connected with the outer edge of the fixed plate 10.

[0042] Each time, the wire harness 3 rotates at a fixed position to contact the inner wall of the outlet 29 and scrapes the suspended matter adhered to the inner wall of the outlet 29, so that the fixed position where the wire harness 3 contacts the inner wall of the outlet 29 is prone to accumulate the scraped suspended matter, resulting in the difficulty of subsequent scraping and cleaning of the suspended matter. Therefore, the following improvements are made:

[0043] The swivel 13 is fixedly provided with a guide tube 17, which is a hollow structure. One end of the guide tube 17 passes through the swivel 13 and is flush with the outer edge of the swivel 13, and the other end extends toward the conversion center and is vertically bent downward at the center. The wire harness 3 is connected at both ends, and the wire harness 3 passes through the two guide tubes 17 at both ends of the outlet 29. Then, a floating plate 18 is fixedly provided at a portion of the wire harness 3 that coincides with the virtual central axis of the swivel 13. The floating plate 18 is located inside the outlet 29, and the diameter of the floating plate 18 is smaller than the caliber of the outlet 29.

[0044] The extension portion 2 of the shell 1 defines a receiving groove 19, the folding plate 11 is located inside the receiving groove 19 and is slidably connected to the inner wall of the receiving groove 19, and a plurality of fan blades 20 are fixedly arranged on the inner ring of the rotating ring 13, and the plurality of fan blades 20 are equidistantly arranged on the inner ring of the rotating ring 13.

[0045] The wastewater treatment and recycling system also includes:

[0046] The treatment tank 21 has a reaction zone 22, an air flotation contact zone 23 and a sludge zone 24;

[0047] A foam scraping device 25 is arranged above the treatment tank 21;

[0048] A clear water tank 26 is connected to the air flotation contact area 23;

[0049] The gas dissolving tank 27 and the pump body 28 are respectively arranged on the treatment tank 21 and the clean water tank 26;

[0050] The scraper device 25 scrapes the suspended matter floating in the flotation contact area 23 to the sludge area 24, and the treated clean water in the flotation contact area 23 flows to the clean water tank 26. The clean water in the clean water tank 26 is lifted by the pump body 28 and mixed with the compression space in the dissolved air tank 27 to produce dissolved air water containing saturated air.

[0051] Working principle:

[0052] The sewage entering the treatment tank 21 is added with flocculant PAC and coagulant aid PAM in the reaction zone 22. After an effective flocculation reaction, the sewage enters the air flotation contact zone 23. In the air flotation contact zone 23, microbubbles of dissolved air water adhere to the flocculated suspended matter, and the flocs and bubbles float to the liquid surface together to form scum to achieve solid-liquid separation. The scum is scraped by the scraper device 25 to the sludge zone 24, and the sinking clean water flows into the clean water tank 26 by gravity. The clean water in the clean water tank 26 is lifted by the pump body 28 and mixed with the compression space in the dissolved air tank 27 to produce dissolved air water containing saturated air.

[0053] The dissolved air water is rapidly decompressed and released by the air flotation releaser in the air flotation contact area 23, forming a large number of micro bubbles, which adhere to the flocs in the sewage. Specifically:

[0054] The dissolved air water enters the shell 1 and impacts the driving disk 4 from bottom to top, and passes through the driving disk 4 through the guide holes 6 on the driving disk 4. When the dissolved air water passes through the guide holes 6, it is quickly decompressed and released to form a large number of microbubbles. At the same time, a horizontal component force is applied to the inner wall of the guide hole 6, prompting the driving disk 4 to start rotating, so that the rotating disk 8 rotates synchronously in the same direction, and the rotating ring 13 meshing with the rotating disk 8 starts to rotate at a high speed in the opposite direction. Then, the fan blade 20 rotates at a high speed, exerting a downward force on the sewage in the outlet 29, so that the rotating ring 13 moves up, and the outlet 29 is opened. The dissolved air water containing microbubbles is discharged through the channel 9 and the outlet 29 and mixed with the sewage.

[0055] The rotating ring 13 drives the wire harness 3 to scrape the suspended matter attached to the inner wall of the outlet 29. The dissolved air water flows from top to bottom in the outlet 29, which continuously impacts the floating plate 18, causing the floating plate 18 to move downward in the outlet 29, so that the wire harness 3 moves with it. Then, the part of the inner wall of the outlet 29 scraped by the wire harness 3 changes, thereby avoiding the accumulation of suspended matter after being scraped by the wire harness 3.

[0056] After the flotation releaser finishes working, the dissolved air water is stopped from flowing into the flotation releaser, and the rotating disk 8 loses the power to rotate, the rotating ring 13 loses the power to rotate, and the fan blade 20 also loses the power to rotate. The rotating ring 13 moves downward under the action of gravity and covers the upper end of the outlet 29. The floating plate 18 has buoyancy, and the floating plate 18 loses the impact of the dissolved air water and moves up to the upper end of the outlet 29.

[0057] It should be noted that:

[0058] The length relationship between the driving gear and the driven gear is that the driving gear and the driven gear are always meshed and connected. When the conversion cover at the upper end of the outlet 29 is closed at the upper end of the outlet 29, the driving gear and the driven gear are always in a meshed and connected state.

[0059] The length of the harness 3 can be a fixed length, or the harness 3 can be an elastic one with a variable length;

[0060] Attached Figure 7 A in the middle refers to the air flotation release device;

[0061] Attached Figure 3 Where FN is the resultant force, F1 is the horizontal component, and F2 is the inclined component.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wastewater treatment and recycling system, characterized in that: With air flotation release device including: The housing (1) is a hollow structure, one end of which is a threaded interface; The extension portion (2) is integrally formed with the housing (1) and has a plurality of outlets (29) arranged equidistantly around the circumference; A plurality of wire harnesses (3) are respectively arranged at a plurality of outlets (29), with two ends of the wire harnesses (3) respectively located at two ends of the outlets (29), and the wire harnesses (3) are in contact with the inner wall of the outlets (29); The cross section of the wire harness (3) is circular, the wire harness (3) always fits the inner wall of the outlet (29) and is in linear contact with the inner wall of the outlet (29), and can rotate along the virtual central axis of the inner wall to scrape off suspended matter adhered to the inner wall of the outlet (29).

2. A wastewater treatment and recycling system according to claim 1, characterized in that: The air flotation releaser also includes a driving disk (4) located inside the shell (1), the driving disk (4) is fixedly sleeved with a support ring (30), the inner wall of the shell (1) is provided with an annular groove (5), the support ring (30) is adapted to the annular groove (5), the support ring (30) is located inside the annular groove (5) and is slidably connected to the inner wall of the annular groove (5), so that the driving disk (4) can rotate inside the shell (1), and the driving disk (4) is provided with a plurality of guide holes (6), the guide holes (6) are obliquely arranged on the driving disk (4) and penetrate through both sides of the driving disk (4), and dissolved air water entering the shell (1) through the interface passes through each guide hole (6).

3. A wastewater treatment and recycling system according to claim 2, characterized in that: The driving disk (4) is coaxially fixedly connected to the rotating shaft (7), the rotating shaft (7) is fixedly connected to the rotating disk (8), the rotating disk (8) is provided with a channel (9), components of the binding wire harness (3) are arranged at both ends of the outlet (29), and the components of the binding wire harness (3) are arranged in a transmission manner with the rotating disk (8), so that the components of the binding wire harness (3) and the rotating disk (8) rotate synchronously.

4. A wastewater treatment and recycling system according to claim 3, characterized in that: The components of the binding wire harness (3) include two fixed plates (10) respectively located at the two ends of the outlet (29), the fixed plate (10) is fixedly connected to the folding plate (11), the folding plate (11) is connected to the extension part (2) of the shell (1), the fixed plate (10) is fixedly connected to the limiting ring (12), a rotating ring (13) is arranged on one side of the fixed plate (10), the rotating ring (13) is provided with a limiting groove (14), the limiting groove (14) and the limiting ring (12) are slidably connected, the two ends of the wire harness (3) are respectively connected to the outer edges of the two rotating rings (13), the outer edge diameter of the rotating ring (13) is larger than the diameter of the outlet (29), the outer edge of one of the fixed plates (10) is provided with circumferentially arranged driven teeth (15), and the outer edge of the rotating disk (8) is provided with circumferentially arranged active teeth (16), so that the outer edge of the rotating disk (8) and the outer edge of the fixed plate (10) are meshed and connected.

5. A wastewater treatment and recycling system according to claim 4, characterized in that: The swivel (13) is fixedly provided with a guide tube (17), the guide tube (17) being a hollow structure, one end of the guide tube (17) passing through the swivel (13) and being flush with the outer edge of the swivel (13), the other end of which extends in the direction of the conversion center and is vertically bent at the center and arranged downward, the wire harness (3) is connected at both ends, the wire harness (3) passes through the two guide tubes (17) at both ends of the outlet (29), and a floating plate (18) is fixedly provided at a portion of the wire harness (3) that coincides with the virtual central axis of the swivel (13), the floating plate (18) being located inside the outlet (29), and the diameter of the floating plate (18) being smaller than the diameter of the outlet (29).

6. A wastewater treatment and recycling system according to claim 4, characterized in that: The extension portion (2) of the shell (1) is provided with a receiving groove (19), the folding plate (11) is located inside the receiving groove (19) and is slidably connected to the inner wall of the receiving groove (19), and a plurality of fan blades (20) are fixedly arranged on the inner ring of the rotating ring (13), and the plurality of fan blades (20) are equidistantly arranged on the inner ring of the rotating ring (13) in a circumferential manner.

7. A wastewater treatment and recycling system according to claim 1, characterized in that: Also includes: A treatment tank (21) having a reaction zone (22), an air flotation contact zone (23) and a sludge zone (24); A foam scraping device (25) is arranged above the treatment tank (21); A clear water tank (26) is connected to the air flotation contact area (23); The gas dissolving tank (27) and the pump body (28) are respectively arranged on the treatment tank (21) and the clean water tank (26); The scraping device (25) scrapes the suspended matter floating in the flotation contact area (23) to the sludge area (24), and the treated clean water in the flotation contact area (23) flows to the clean water tank (26). The clean water in the clean water tank (26) is lifted by the pump body (28) and mixed with the compression space in the dissolved air tank (27) to produce dissolved air water containing saturated air.

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