Composite flocculant dissociation device

Abstract

The present invention discloses a composite flocculant dissociation device, which includes a dissociation barrel, and a shearing assembly and a decomposition assembly arranged in the dissociation barrel; the shearing assembly includes a shearing shaft, a shearing blade and a shearing power component, the shearing shaft is coaxially arranged in the dissociation barrel, and is transmission-connected with the power output end of the shearing power component, and the shearing blades are stacked up and down in the dissociation barrel along the length direction of the shearing shaft; the decomposition assembly includes an ultrasonic vibrator and an ozone generator, the vibration end of the ultrasonic vibrator is arranged on the barrel body of the dissociation barrel, and the ozone aeration pipe connected to the ozone generator is arranged at the bottom of the dissociation barrel. The flocculant solution is sheared at high speed by the shearing blades to physically break the flocculant in the dissociation barrel; at the same time, the ozone oxidation method is used to generate hydroxyl free radicals in the flocculant molecules to form chemical degradation, and the ultrasonic vibrator is combined with ultrasonic cavitation to further degrade the flocculant, so that the flocculant is fully decomposed and the molecular dimension is degraded.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a composite flocculant dissociation device. Background Art

[0002] At present, concentration and dehydration technology is widely used in the fields of sand washing water wastewater treatment in the sand washing industry and tailings thickening in the mine filling industry. In order to improve the concentration efficiency of sewage and tailings and achieve sufficient underflow concentration, it is usually necessary to add flocculants such as polyacrylamide. In order to reduce water costs and meet environmental protection requirements, general enterprises usually need to repeat and recycle the water with added flocculants. Each time the flocculant is added in the cycle, the residual flocculant in the solution will be enriched once, so that the concentration of the residual flocculant continues to increase. Excessive residues of flocculants in the water will eventually reduce the quality of machine-made sand and affect the performance of concrete. In addition, when water containing flocculants is reused in mines, it will affect the mineral processing indicators. Therefore, it is necessary to invent a flocculant dissociation system to remove the residues of flocculants in sand washing wastewater.

[0003] The utility model patent with the patent number of 202320333360.8 discloses a flocculant dissociator, which includes a centrifugal pump, a connecting pipe, a reactor, a porous medium plate, a feed pipe and a drain valve; the centrifugal pump is connected to the reactor through a connecting pipe; a vortex flow channel is arranged in the reactor, and a detachable porous medium plate is arranged in the reactor, and the porous medium plate passes through the flow channel to separate it; the feed pipe is connected to the reactor on all sides so that the feed can fully enter the reactor; the drain valve is arranged at the bottom of the reactor. The above technology physically dissociates the sand washing wastewater through the porous medium, and then introduces chemical reagents through the feed pipe for chemical reaction, thereby realizing the dissociation of the flocculant, but the porous medium plate can only realize physical dissociation on a large scale, and it is impossible to achieve complete dissociation for flocculants and flocculant molecules with a size less than 2mm, and the above technology requires the additional introduction of chemical reagents, the dissociation cost is high, and the operation is cumbersome.

[0004] Based on this, there is an urgent need to provide a flocculant dissociation device that is simple to operate and can fully decompose the flocculant to achieve molecular dimensional degradation. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a composite flocculant dissociation device, which is simple to operate and can fully decompose the flocculant to achieve molecular dimensional degradation.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: to provide a composite flocculant dissociation device, which includes a dissociation barrel, and a shearing assembly and a decomposition assembly arranged in the dissociation barrel; the shearing assembly includes a shearing shaft, shearing blades and a shearing power component, the shearing shaft is coaxially arranged in the dissociation barrel, and is transmission-connected to the power output end of the shearing power component, and the shearing blades are stacked up and down in the dissociation barrel along the length direction of the shearing shaft; the decomposition assembly includes an ultrasonic vibrator and an ozone generator, the vibration end of the ultrasonic vibrator is arranged on the barrel body of the dissociation barrel, and the ozone aeration pipe connected to the ozone generator is arranged at the bottom of the dissociation barrel.

[0007] Preferably, a plurality of laminar flow baffles are stacked up and down in the dissociation barrel along the length direction of the shear axis, for decomposing the dissociation barrel into a plurality of laminar flow spaces up and down, the laminar flow baffles are arranged between the shear blades, and the laminar flow baffles are provided with flow holes.

[0008] Preferably, the flow holes on adjacent laminar flow baffles are arranged in a staggered manner.

[0009] Preferably, a spoiler is provided on the inner wall of the dissociation barrel.

[0010] Preferably, the spoiler is arranged on the inner wall of the barrel between adjacent shear blades, and the end of the spoiler extends radially toward the middle of the dissociation barrel and partially extends into between adjacent shear blades.

[0011] Preferably, at least one shear blade and one spoiler are provided in the laminar flow space.

[0012] Preferably, the vibration end of the ultrasonic vibrator is arranged at the bottom of the dissociation barrel.

[0013] Preferably, the bottom of the dissociation barrel is a bucket-shaped structure, the ozone aeration pipes are arranged in a concentric ring shape at the bottom of the dissociation barrel, and the vibrating end of the ultrasonic vibrator is arranged between radially adjacent ozone aeration pipes.

[0014] Preferably, an overflow sub-barrel is provided on the outside of the dissociation barrel, and the overflow sub-barrel is connected to the dissociation barrel body through a guide port arranged at the lower part of the dissociation barrel. A weir flow port is provided at the upper end of the overflow sub-barrel, and the height of the weir flow port is lower than the barrel body height of the dissociation barrel.

[0015] Preferably, the dissociation barrel is further provided with a circulating water circuit, the water inlet of the circulating water circuit is connected to the lower part of the dissociation barrel, and the water outlet is connected to the water inlet at the upper end of the dissociation barrel.

[0016] The beneficial effects of the present invention are:

[0017] The composite flocculant dissociation device of the present invention uses shear blades to shear the flocculant solution at high speed, destroy the long molecular chains of the flocculant, and physically break the flocculant in the dissociation barrel; at the same time, an ozone aeration pipe introduces ozone into the dissociation barrel, and an ozone oxidation method is used to generate hydroxyl free radicals from the flocculant molecules to form chemical degradation, and an ultrasonic vibrator is used to perform ultrasonic cavitation on the flocculant in the dissociation barrel, and the high temperature generated by ultrasonic instantaneous cavitation and the local high pressure formed by the ultrasonic vibration to break the ozone bubbles are used to further degrade the flocculant, and the flocculant is fully decomposed through the combination of physical breakage and chemical degradation, and molecular dimensional degradation is achieved.

[0018] The composite flocculant dissociation device of the present invention is provided with a laminar baffle between adjacent shear blades. The laminar baffle bearing is mounted on the shear shaft, and its outer edge abuts against the inner wall of the dissociation barrel, thereby decomposing the dissociation barrel into multiple laminar spaces from top to bottom, and the fluid dynamics in each laminar space are relatively independent, thereby preventing the flocculant in the dissociation barrel from forming a large centrifugal vortex when the shear blades rotate synchronously to disturb it, which is not conducive to the decomposition and crushing of the flocculant.

[0019] The composite flocculant dissociation device of the present invention has a shear blade in each relatively independent laminar flow space to drive the flocculant in the laminar flow space to be disturbed; the flocculants in the upper and lower adjacent laminar flow spaces are mixed in different laminar flow spaces through the flow holes under the power of the shear blades. Furthermore, the flow holes on the adjacent laminar flow baffles are staggered, which prolongs the flow path of the flocculant in the dissociation barrel, thereby prolonging the decomposition time of the flocculant in the dissociation barrel and improving the decomposition effect of the flocculant.

[0020] The composite flocculant dissociation device of the present invention is designed such that the vibration end of the ultrasonic vibrator is arranged together with the ozone aeration pipe at the bottom of the dissociation barrel, and when the ozone aeration pipe introduces ozone bubbles into the dissociation barrel, the ultrasonic vibrator and the ozone aeration pipe work synchronously, and the ozone bubbles are broken up by high-frequency ultrasonic vibration, and cavitation is generated to accelerate the decomposition of the flocculant, and the local high pressure formed by the ultrasonic vibration on the broken ozone bubbles further degrades the flocculant. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the composite flocculant dissociation device described in an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the dissociation barrel in the composite flocculant dissociation device according to an embodiment of the present invention.

[0023] Figure 3 For along Figure 2 Sectional view of AA.

[0024] The markings of the components in the accompanying drawings are as follows:

[0025] 1. Dissociation barrel; 2. Shear shaft; 3. Shear blade; 4. Shear power component; 5. Ultrasonic vibrator; 6. Ozone generator; 61. Ozone aeration pipe; 11. Overflow sub-barrel; 101. Diversion port; 111. Weir flow port; 12. Laminar flow baffle; 102. Flow hole; 13. Shear blade; 14. Spoiler; 103. Sewage circulation port; 7. Circulating water circuit; 8. Tail gas recovery pipeline; 9. Self-cleaning pipeline; 71. Circulating water pump; 81. Tail gas absorption device; 91. Air compressor; 701. Sewage branch. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0027] The embodiment of the present invention provides a composite flocculant dissociation device, such as Figures 1 to 3 As shown, it includes a dissociation barrel 1, and a shearing assembly and a decomposition assembly arranged in the dissociation barrel 1; the shearing assembly includes a shearing shaft 2, a shearing blade 133 and a shearing power component 4, the shearing shaft 2 is coaxially arranged in the dissociation barrel 1, and is transmission-connected to the power output end of the shearing power component 4, and the shearing blade 133 is stacked up and down in the dissociation barrel 1 along the length direction of the shearing shaft 2; the decomposition assembly includes an ultrasonic vibrator 5 and an ozone generator 6, the vibration end of the ultrasonic vibrator 5 is arranged on the barrel body of the dissociation barrel 1, and the ozone aeration pipe 61 connected to the ozone generator 6 is arranged at the bottom of the dissociation barrel 1.

[0028] The shear blades 133 rotate at high speed in the dissociation barrel 1 under the power of the shear power component 4, shear the flocculant solution at high speed, destroy the long molecular chains of the flocculant, and physically break the flocculant in the dissociation barrel 1; at the same time, the ozone aeration pipe 61 introduces ozone into the dissociation barrel 1, and uses the ozone oxidation method to make the flocculant molecules generate hydroxyl free radicals to form chemical degradation, and combines with the ultrasonic vibrator 5 to perform ultrasonic cavitation on the flocculant in the dissociation barrel 1, and utilizes the high temperature generated by ultrasonic instantaneous cavitation and the local high pressure formed by the ultrasonic vibration to break the ozone bubbles to further degrade the flocculant, and through the combination of physical breakage and chemical degradation, the flocculant is fully decomposed and the molecular dimension is degraded.

[0029] like Figure 2As shown, an overflow sub-barrel 11 is provided on the outside of the dissociation barrel 1, and the overflow sub-barrel 11 is connected to the barrel body of the dissociation barrel 1 through a diversion port 101 provided at the lower part of the dissociation barrel 1. A weir flow port 111 is provided at the upper end of the overflow sub-barrel 11, and the height of the weir flow port 111 is lower than the barrel body height of the dissociation barrel 1. The overflow water containing flocculant flows into the dissociation barrel 1 from the barrel opening at the upper end, and flows into the overflow sub-barrel 11 from the diversion port 101 at the lower part of the barrel body, rises in the overflow sub-barrel 11, and flows out from the weir flow port 111.

[0030] A plurality of laminar flow baffles 12 are stacked up and down in the dissociation barrel 1 along the length direction of the shear axis 2, and are used to decompose the dissociation barrel 1 into a plurality of laminar flow spaces. Specifically, the laminar flow baffles 12 are arranged between the shear blades 133, and the laminar flow baffles 12 are provided with flow holes 102, such as Figure 2 and Figure 3 As shown, laminar baffles 12 are provided between adjacent shear blades 133. The laminar baffles 12 are bearing-mounted on the shear shaft 2, and the outer edge of the laminar baffles 12 abuts against the inner wall of the dissociation barrel 1, thereby decomposing the dissociation barrel 1 into multiple laminar spaces from top to bottom, and the fluid dynamics in each laminar space are relatively independent, thereby preventing the flocculant in the dissociation barrel 1 from forming a large centrifugal vortex when the shear blades 133 rotate synchronously and disturb it, which is not conducive to the decomposition and crushing of the flocculant.

[0031] Each relatively independent laminar flow space is provided with a shear blade 133 to drive the flocculant in the laminar flow space to be disturbed; the flocculants in the upper and lower adjacent laminar flow spaces are mixed in different laminar flow spaces through the flow holes 102 under the power of the shear blade 133. Furthermore, the flow holes 102 on the adjacent laminar flow baffles 12 are staggered, which prolongs the flow path of the flocculant in the dissociation barrel 1, thereby prolonging the decomposition time of the flocculant in the dissociation barrel 1 and improving the decomposition effect of the flocculant.

[0032] The inner wall of the dissociation barrel 1 is provided with a spoiler 14, which is arranged on the inner wall of the barrel between adjacent shear blades 133 to disrupt the tangential flow in the dissociation barrel 1. Figure 2 As shown, each laminar flow space in the dissociation barrel 1 is provided with a plurality of spoilers 14, which are distributed circumferentially along the inner wall of the barrel, and the ends of the spoilers 14 extend radially toward the middle of the dissociation barrel 1 and partially extend between adjacent shear blades 133. In the longitudinal projection plane, the ends of the spoilers 14 overlap with the shear blades 133. Figure 2As shown, in the dissociation barrel 1, the spoiler 14, the shear blade 133, and the laminar flow baffle 12 are arranged in a circular manner in sequence, forming a rotating tortuous path in the dissociation barrel 1, so that not only the decomposition time of the flocculant in the dissociation barrel 1 is further extended, but also the turbulence in different directions is provided for the flocculant, so that the decomposition effect of the flocculant in the dissociation barrel 1 is better. The flocculant flowing in from the upper end of the dissociation barrel 1 flows tortuously in the dissociation barrel 1, and is broken by the shear blade 133 in each laminar flow space, and further mixed flow disturbance is caused under the synchronous action of the shear blade 133 and the tortuous path, thereby improving the physical decomposition effect of the flocculant.

[0033] The vibrating end of the ultrasonic vibrator 5 is arranged at the bottom of the dissociation barrel 1 together with the ozone aeration pipe 61 to break the ozone bubbles. Figure 1 and Figure 2 As shown, the bottom of the dissociation barrel 1 is a bucket-shaped structure, and a sewage circulation port 103 is provided at the lowest point; the ozone aeration pipe 61 is arranged in a concentric ring shape at the bottom of the dissociation barrel 1, and the vibration end of the ultrasonic vibrator 5 is arranged between the ozone aeration pipes 61 adjacent to each other in the radial direction. When the ozone aeration pipe 61 introduces ozone bubbles into the dissociation barrel 1, the ultrasonic vibrator 5 and the ozone aeration pipe 61 work synchronously, and the ozone bubbles are broken up by high-frequency ultrasonic vibration, and cavitation is generated to accelerate the decomposition of the flocculant, and the local high pressure formed by the ultrasonic vibration on the broken ozone bubbles further degrades the flocculant.

[0034] In addition, the outside of the dissociation barrel 1 is also provided with a plurality of functional pipelines, namely, a circulating water circuit 7, an exhaust gas recovery pipeline 8 and a self-cleaning pipeline 9. The water inlet of the circulating water circuit 7 is connected to the lower part of the dissociation barrel 1, and the water outlet is connected to the water inlet at the upper end of the dissociation barrel 1. The circulating water circuit 7 is provided with a circulating water pump 71. Figure 1 As shown, the water inlet end of the circulating water pump 71 is connected to the sewage circulation port 103 through the circulating water circuit 7. In order to make the flocculant in the water body decompose more thoroughly, the corresponding circulation volume is selected by monitoring the residual amount in the water body flowing out of the weir flow port 111; specifically, a part of the reacted water is pumped back to the dissociation barrel 1 through the circulating water pump 71 for further reaction.

[0035] The tail gas recovery pipeline 8 is connected to a tail gas absorption device 81, such as Figure 1 As shown, the tail gas absorption device 81 is connected to the upper end of the dissociation barrel 1 through the tail gas recovery pipeline 8. Excess ozone gathers at the upper end of the dissociation barrel 1 and enters the tail gas absorption device 81 through the tail gas recovery pipeline 8. It is reduced to harmless oxygen under the action of the reduction catalyst in the tail gas absorption device 81 and then discharged.

[0036] The self-cleaning pipeline 9 is provided with an air compressor 91, and the air outlet of the air compressor 91 is arranged at the bottom of the dissociation barrel 1. When a large amount of sediment is deposited at the bottom of the dissociation barrel 1, the high-pressure gas generated by the air compressor 91 is used to spray the bottom of the dissociation barrel 1, so that the deposited sediment is discharged from the sewage circulation port 103. Preferably, the air outlet of the air compressor 91 is connected to the ozone aeration pipe 61. When a large amount of sediment is deposited at the bottom of the dissociation barrel 1, the ozone supply can be temporarily cut off, and the air compressor 91 can be started to introduce gas into the ozone aeration pipe 61 to blow the deposited sediment to the sewage circulation port 103 for discharge. Figure 1 As shown, the sewage circulation port 103 is connected to the circulating water circuit 7, and a sewage branch 701 is provided on the circulating water circuit 7. When a large amount of silt is deposited at the bottom of the dissociation barrel 1, the circulating water pump 71 on the circulating water circuit 7 blows the deposited silt out from the sewage circulation port 103, and discharges the silt from the sewage branch 701 through valve control.

[0037] During normal operation, the electric gate valve of the main pipeline is opened, and the overflow water containing flocculants flows through the filter, filtering out solid particles larger than 2 mm in the overflow water, and flows into the dissociation barrel 1 from the top. The shear power component 4, the ozone aeration pipe 61 and the ultrasonic vibrator 5 in the dissociation barrel 1 are started synchronously. After the overflow water containing flocculants enters the dissociation barrel 1, it passes through each laminar flow space from top to bottom in turn, and is broken by the high-speed rotating shear blades 133 in each laminar flow space. In the turbulent and shear motion of the flow field, the length of the flocculant is The molecular chains are broken into short molecular chains to achieve physical decomposition; at the same time, the ozone aeration pipe 61 introduces ozone bubbles into the dissociation barrel 1, and the overflow water flowing downward and the ozone bubbles flowing upward undergo oxidation reactions to generate hydroxyl radicals to achieve chemical degradation; in addition, the ultrasonic vibrator 5 simultaneously generates ultrasonic vibrations, and uses the cavitation effect of ultrasound to transform ozone bubbles into micro bubbles, thereby increasing the mass transfer rate of ozone. During the process of volume shrinkage and collapse, ozone micro bubbles will generate local high temperature and high pressure to accelerate the decomposition of flocculants. After the reaction, the excess ozone is reduced to harmless oxygen under the action of the reduction catalyst in the tail gas absorption device 81 and then discharged.

[0038] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A composite flocculant dissociation device, characterized in that: It includes a dissociation barrel, and a shearing component and a decomposition component arranged in the dissociation barrel; The shearing assembly comprises a shearing shaft, shearing blades and a shearing power component. The shearing shaft is coaxially arranged in the dissociation barrel and is transmission-connected to the power output end of the shearing power component. The shearing blades are stacked up and down in the dissociation barrel along the length direction of the shearing shaft. The decomposition assembly includes an ultrasonic vibrator and an ozone generator, the vibration end of the ultrasonic vibrator is arranged on the barrel body of the dissociation barrel, and the ozone aeration pipe connected to the ozone generator is arranged on the bottom of the dissociation barrel; A plurality of laminar flow baffles are stacked up and down in the dissociation barrel along the length direction of the shear axis, which are used to decompose the dissociation barrel into a plurality of laminar flow spaces, the laminar flow baffles are arranged between the shear blades, and the laminar flow baffles are provided with flow holes; the flow holes on adjacent laminar flow baffles are arranged in a staggered manner; A spoiler is provided on the inner wall of the dissociation barrel. The spoiler is arranged on the inner wall of the barrel between adjacent shear blades, and the end of the spoiler extends radially toward the middle of the dissociation barrel and partially extends between adjacent shear blades.

2. The composite flocculant dissociation device according to claim 1, characterized in that: At least one shear blade and one spoiler are arranged in the laminar flow space.

3. The composite flocculant dissociation device according to claim 1, characterized in that: The vibration end of the ultrasonic vibrator is arranged at the bottom of the dissociation barrel.

4. The composite flocculant dissociation device according to claim 3, characterized in that: The bottom of the dissociation barrel is a bucket-shaped structure, the ozone aeration pipes are arranged in a concentric ring shape at the bottom of the dissociation barrel, and the vibration end of the ultrasonic vibrator is arranged between the ozone aeration pipes adjacent to each other in the radial direction.

5. The composite flocculant dissociation device according to claim 1, characterized in that: An overflow sub-barrel is provided on the outside of the dissociation barrel, and the overflow sub-barrel is connected to the dissociation barrel body through a guide port arranged at the lower part of the dissociation barrel. A weir flow port is provided at the upper end of the overflow sub-barrel, and the height of the weir flow port is lower than the barrel body height of the dissociation barrel.

6. The composite flocculant dissociation device according to claim 1, characterized in that: The dissociation barrel is also provided with a circulating water circuit, the water inlet of the circulating water circuit is connected to the lower part of the dissociation barrel, and the water outlet is connected to the water inlet at the upper end of the dissociation barrel.

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