Micro-granular sludge and MBR coupling device for removing micro-plastics in breeding wastewater

Abstract

The utility model relates to the technical field of microplastic removal of breeding wastewater, and discloses a microgranular sludge and MBR (membrane bioreactor) coupling device for microplastic removal of breeding wastewater, which comprises a first treatment box, and a second treatment box is arranged on the right side of the first treatment box; the first treatment box is filled with microgranular sludge, the left side of the first treatment box is fixedly connected with a mounting frame, the right side of the mounting frame is fixedly connected with a supporting rod, the front surface of the supporting rod is fixedly connected with a first servo motor, the right side of the supporting rod is provided with a moving groove, and the moving groove is internally and movably connected with a lead screw. According to the microgranular sludge and MBR coupling device for removing the microplastics in the breeding wastewater, the stirring of the breeding wastewater is more comprehensive, the treatment of the microplastics in the wastewater is accelerated, so that the microplastics are treated more quickly, oxygen is provided for sludge and wastewater in the first treatment box through the aeration pump and the aeration pipe, the growth and activity of microorganisms are facilitated, the treatment of the microplastics is accelerated, and the treatment efficiency of the microplastics is improved. The effect of efficiently removing the micro-plastics in the breeding wastewater is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of removing microplastics from aquaculture wastewater, in particular to a micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater. Background Art

[0002] Plastics will be broken into smaller plastic fragments by light degradation and biodegradation in the environment. Plastics with a particle size of less than 5 mm are called microplastics. Microplastics have small particle size and low density and can migrate under the influence of external forces such as rivers and wind. Studies have shown that microplastic pollution is prevalent in the world's oceans, freshwater, soil and other environments, among which water environments are the main environment for the existence of microplastics. Microplastics such as polyvinyl chloride, polypropylene and polystyrene have been detected in water bodies.

[0003] Due to their small size, microplastics are easily ingested by marine organisms, affecting their normal growth, development and reproduction, and are transferred between trophic levels along the food chain, thus affecting the entire ecosystem. The water used and wastewater generated in the aquaculture process need to be treated to remove microplastics.

[0004] Chinese patent authorization announcement number CN217459018U discloses "A composite biochar and oyster shell aquaculture microplastic removal device", which includes a sedimentation tank, an adsorption tank and a microfiltration tank connected in sequence; the bottom of the adsorption tank is paved with oyster shells; the water in the adsorption tank flows into the microfiltration tank after being filtered by a rotating drum; a biological filter net composed of biochar as a carrier is attached to the outer side of the circumference of the rotating drum, and a spiral guide plate is provided on the inner side of the circumference of the rotating drum. The composite biochar and oyster shell aquaculture microplastic removal device uses biochar and oyster shell composites to perform secondary removal of microplastic particles in the water body, greatly improving the removal rate of microplastics; and by arranging a spiral guide plate on the inner side of the circumference of the rotating drum, the water flows along the spiral guide plate after entering from the water inlet pipe of the rotating drum, so that the flow path is extended and the water flows through the biological filter net from different directions, while improving the purification and filtration effect and reducing the frequency of filter blockage.

[0005] However, in actual use, the above-mentioned removal devices in the prior art adsorb microplastics in water slowly and with low efficiency. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a micro-granular sludge and membrane bioreactor (MBR) coupling device for removing microplastics from aquaculture wastewater, which accelerates the treatment of microplastics in the wastewater by stirring with stirring blades, making the microplastics treatment faster and achieving the effect of efficiently removing microplastics from aquaculture wastewater.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater, comprising a first treatment box, a second treatment box being arranged on the right side of the first treatment box;

[0009] The first processing box is filled with micro-granular sludge, the left side of the first processing box is fixedly connected with a mounting frame, the right side of the mounting frame is fixedly connected with a support rod, the front side of the support rod is fixedly connected with a first servo motor, a moving groove is opened on the right side of the support rod, a screw rod is movably connected in the moving groove, the surface of the screw rod is threadedly connected with the moving frame, the top of the moving frame is fixedly connected with a second servo motor, a mounting groove is opened on the right side of the moving frame, a first rotating rod is movably connected in the mounting groove, a first bevel gear is fixedly connected on the surface of the first rotating rod, a cross bar is fixedly connected to the bottom of the moving frame, two support plates are fixedly connected to the top of the cross bar, a second rotating rod is movably connected between the two support plates, the left side of the second rotating rod movably passes through the left support plate and is fixedly connected with the second bevel gear, the surface of the second rotating rod is fixedly connected with a third bevel gear, the bottom of the cross bar is movably connected with the third rotating rod, the bottom of the third rotating rod is fixedly connected with a stirring fan blade, and the top of the third rotating rod movably passes through the cross bar and is fixedly connected with a fourth bevel gear.

[0010] Preferably, the top of the movable frame is fixedly connected to a support frame, the top of the support frame is fixedly connected to an aeration pump, the output end of the aeration pump is fixedly connected to an aeration pipe, the aeration pipe extends into the first processing box, and an aeration head is provided on the aeration pipe.

[0011] Providing oxygen to the sludge and wastewater in the first treatment tank through an aeration pump and an aeration pipe helps the growth and activity of microorganisms, thereby accelerating the treatment of microplastics.

[0012] Preferably, the movable frame is slidably arranged in the movable groove, and the front side of the screw rod movably penetrates the support rod and is fixedly connected to the first servo motor.

[0013] Preferably, the top of the first rotating rod movably passes through the moving frame and is fixedly connected to the second servo motor, the first bevel gear is meshed with the second bevel gear, and the third bevel gear is meshed with the fourth bevel gear.

[0014] The first rotating rod can be driven to rotate by the second servo motor, the first bevel gear on the first rotating rod meshes with the second bevel gear to rotate the second rotating rod, the third bevel gear on the surface of the second rotating rod meshes with the fourth bevel gear to rotate the third rotating rod, thereby driving the stirring blades to stir.

[0015] Preferably, a water pipe is provided on the right side of the first processing box, a pump body is provided on the right side of the water pipe, and the right side of the pump body is connected to the second processing box.

[0016] Preferably, a frame is provided on the top of the second treatment box, an MBR membrane assembly is provided on the bottom of the frame, and a water outlet pipe is provided on the top of the MBR membrane assembly.

[0017] After the aquaculture wastewater is treated in the first treatment tank, it is introduced into the second treatment tank through the pump body. In the second treatment tank, the MBR membrane assembly is used to further filter and purify the wastewater to achieve solid-liquid separation.

[0018] Preferably, a sewage pipe is provided on the right side of the second processing box, and a valve is provided on the sewage pipe.

[0019] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0020] First, the wastewater is discharged into the first treatment box, and the micro-granular sludge is used to absorb microplastics in the wastewater. The first servo motor can drive the screw to rotate, so that the movable frame can reciprocate in the movable groove, and the second servo motor can drive the first rotating rod to rotate, and the first bevel gear on the first rotating rod is meshed with the second bevel gear to rotate the second rotating rod, and the third bevel gear on the surface of the second rotating rod is meshed with the fourth bevel gear to rotate the third rotating rod, thereby driving the stirring blades to stir. At the same time, the reciprocating movement of the movable frame enables the stirring blades to stir the aquaculture wastewater in the first treatment box more comprehensively, thereby speeding up the treatment of microplastics in the wastewater, and making the treatment of microplastics faster. The aeration pump and the aeration pipe provide oxygen for the sludge and wastewater in the first treatment box, which is conducive to the growth and activity of microorganisms, thereby accelerating the treatment of microplastics and achieving the effect of efficiently removing microplastics from aquaculture wastewater.

[0021] Second, after the aquaculture wastewater is treated in the first treatment tank, it is introduced into the second treatment tank through the pump body. In the second treatment tank, the MBR membrane assembly is used to further filter and purify the wastewater to achieve solid-liquid separation. The micro-granular sludge is coupled with the MBR to improve the effluent quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front section structure of the first processing box of the utility model;

[0024] Figure 3 This is a schematic diagram of the front cutaway three-dimensional structure of the first processing box of the utility model;

[0025] Figure 4This is an enlarged structural diagram of the utility model at A;

[0026] Figure 5 It is a front cutaway structural schematic diagram of the second processing box of the utility model.

[0027] Wherein: 1. first treatment box; 2. second treatment box; 11. micro-granular sludge; 12. support rod; 13. first servo motor; 14. screw rod; 15. moving frame; 16. second servo motor; 17. first rotating rod; 18. first bevel gear; 19. cross bar; 20. second rotating rod; 21. second bevel gear; 22. third bevel gear; 23. third rotating rod; 24. stirring blade; 25. fourth bevel gear; 26. aeration pump; 27. aeration pipe; 28. water guide pipe; 29. ​​pump body; 3. MBR membrane assembly; 4. outlet pipe; 5. sewage pipe. DETAILED DESCRIPTION

[0028] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Embodiment 1

[0030] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , a micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater, comprising a first treatment box 1, and a second treatment box 2 is arranged on the right side of the first treatment box 1;

[0031] The first treatment box 1 is filled with micro-granular sludge 11, a mounting frame is fixedly connected to the left side of the first treatment box 1, a support rod 12 is fixedly connected to the right side of the mounting frame, a first servo motor 13 is fixedly connected to the front of the support rod 12, a moving groove is opened on the right side of the support rod 12, a screw rod 14 is movably connected in the moving groove, a moving frame 15 is threadedly connected to the surface of the screw rod 14, a second servo motor 16 is fixedly connected to the top of the moving frame 15, a mounting groove is opened on the right side of the moving frame 15, a first rotating rod 17 is movably connected in the mounting groove, and a first cone shaped rotating rod 17 is fixedly connected to the surface of the first rotating rod 17 Gear 18, the bottom of the movable frame 15 is fixedly connected with a cross bar 19, the top of the cross bar 19 is fixedly connected with two support plates, a second rotating rod 20 is movably connected between the two support plates, the left side of the second rotating rod 20 movably passes through the left support plate and is fixedly connected with a second bevel gear 21, the surface of the second rotating rod 20 is fixedly connected with a third bevel gear 22, the bottom of the cross bar 19 is movably connected with a third rotating rod 23, the bottom of the third rotating rod 23 is fixedly connected with a stirring blade 24, and the top of the third rotating rod 23 movably passes through the cross bar 19 and is fixedly connected with a fourth bevel gear 25.

[0032] The top of the mobile frame 15 is fixedly connected to a support frame, the top of the support frame is fixedly connected to an aeration pump 26, the output end of the aeration pump 26 is fixedly connected to an aeration pipe 27, the aeration pipe 27 extends into the first treatment box 1, and an aeration head is provided on the aeration pipe 27.

[0033] The moving frame 15 is slidably disposed in the moving groove, and the front side of the screw rod 14 movably penetrates the support rod 12 and is fixedly connected to the first servo motor 13 .

[0034] The top of the first rotating rod 17 movably passes through the moving frame 15 and is fixedly connected to the second servo motor 16 . The first bevel gear 18 is meshed with the second bevel gear 21 , and the third bevel gear 22 is meshed with the fourth bevel gear 25 .

[0035] Through the above technical scheme, wastewater is discharged into the first treatment box 1, and the micro-granular sludge 11 is used to adsorb microplastics in the wastewater. The first servo motor 13 can drive the screw 14 to rotate, so that the movable frame 15 can reciprocate in the movable groove, and the second servo motor 16 can drive the first rotating rod 17 to rotate, and the first bevel gear 18 on the first rotating rod 17 is meshed with the second bevel gear 21 to rotate the second rotating rod 20, and the third bevel gear 22 on the surface of the second rotating rod 20 is meshed with the fourth bevel gear 25 to rotate the third rotating rod 23, thereby driving the stirring blades 24 to stir. At the same time, the reciprocating movement of the movable frame 15 enables the stirring blades 24 to stir the aquaculture wastewater in the first treatment box 1 more comprehensively, thereby speeding up the treatment of microplastics in the wastewater and making the microplastics treatment faster. The aeration pump 26 and the aeration pipe 27 provide oxygen for the sludge and wastewater in the first treatment box 1, which is conducive to the growth and activity of microorganisms, thereby accelerating the treatment of microplastics and achieving the effect of efficiently removing microplastics from aquaculture wastewater.

[0036] Embodiment 2

[0037] See also Figure 5 On the basis of the first embodiment, it is further obtained that: a water pipe 28 is arranged on the right side of the first processing box 1 , a pump body 29 is arranged on the right side of the water pipe 28 , and the right side of the pump body 29 is connected to the second processing box 2 .

[0038] A frame is arranged on the top of the second treatment box 2 , an MBR membrane assembly 3 is arranged on the bottom of the frame, and a water outlet pipe 4 is arranged on the top of the MBR membrane assembly 3 .

[0039] A sewage pipe 5 is provided on the right side of the second processing box 2 , and a valve is provided on the sewage pipe 5 .

[0040] Through the above technical solution, the aquaculture wastewater is treated in the first treatment tank 1 and then introduced into the second treatment tank 2 through the pump body 29. In the second treatment tank 2, the MBR membrane assembly 3 is used to further filter and purify the wastewater to achieve solid-liquid separation. The micro-granular sludge is coupled with the MBR to improve the effluent quality.

[0041] In actual operation, when this device is in use, the wastewater first enters the first treatment tank 1 and mixes with the micro-particulate sludge 11. The stirring action of the stirring blades 24 increases the contact area between the microplastics and the sludge, thereby improving the removal efficiency. The aeration pump 26 and the aeration pipe 27 provide the necessary oxygen for the microorganisms in the first treatment tank 1, promote the growth and activity of the microorganisms, and accelerate the treatment of microplastics. The preliminarily treated wastewater is transported to the second treatment tank 2 through the pump body 29, and is filtered and purified by the MBR membrane assembly 3. The purified water is finally discharged through the outlet pipe 4, and the generated sludge is discharged from the sewage pipe 5.

[0042] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit thereof, and the scope of these changes, modifications, substitutions and variations is defined by the appended claims and their equivalents.

Claims

1. A micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater, comprising a first treatment tank (1), characterized in that: A second processing box (2) is arranged on the right side of the first processing box (1); The first treatment box (1) is filled with micro-granular sludge (11), a mounting frame is fixedly connected to the left side of the first treatment box (1), a support rod (12) is fixedly connected to the right side of the mounting frame, a first servo motor (13) is fixedly connected to the front side of the support rod (12), a movable groove is provided on the right side of the support rod (12), a screw rod (14) is movably connected to the movable groove, a movable frame (15) is threadedly connected to the surface of the screw rod (14), a second servo motor (16) is fixedly connected to the top of the movable frame (15), a mounting groove is provided on the right side of the movable frame (15), a first rotating rod (17) is movably connected to the mounting groove, and a first rotating rod (17) is fixedly connected to the surface of the first rotating rod (17). A bevel gear (18), the bottom of the movable frame (15) is fixedly connected to a cross bar (19), the top of the cross bar (19) is fixedly connected to two support plates, a second rotating rod (20) is movably connected between the two support plates, the left side of the second rotating rod (20) movably passes through the left support plate and is fixedly connected to the second bevel gear (21), the surface of the second rotating rod (20) is fixedly connected to the third bevel gear (22), the bottom of the cross bar (19) is movably connected to the third rotating rod (23), the bottom of the third rotating rod (23) is fixedly connected to a stirring blade (24), and the top of the third rotating rod (23) movably passes through the cross bar (19) and is fixedly connected to a fourth bevel gear (25).

2. The micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater according to claim 1 is characterized in that: The top of the mobile frame (15) is fixedly connected to a support frame, the top of the support frame is fixedly connected to an aeration pump (26), the output end of the aeration pump (26) is fixedly connected to an aeration pipe (27), the aeration pipe (27) extends into the first treatment box (1), and an aeration head is provided on the aeration pipe (27).

3. The micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater according to claim 1 is characterized in that: The movable frame (15) is slidably arranged in the movable groove, and the front side of the screw rod (14) movably penetrates the support rod (12) and is fixedly connected to the first servo motor (13).

4. The micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater according to claim 1 is characterized in that: The top of the first rotating rod (17) movably passes through the moving frame (15) and is fixedly connected to the second servo motor (16); the first bevel gear (18) is meshed with the second bevel gear (21); and the third bevel gear (22) is meshed with the fourth bevel gear (25).

5. The micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater according to claim 1 is characterized in that: A water pipe (28) is arranged on the right side of the first processing box (1), a pump body (29) is arranged on the right side of the water pipe (28), and the right side of the pump body (29) is connected to the second processing box (2).

6. The micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater according to claim 1 is characterized by: A frame is arranged on the top of the second treatment box (2), an MBR membrane assembly (3) is arranged on the bottom of the frame, and a water outlet pipe (4) is arranged on the top of the MBR membrane assembly (3).

7. The micro-granular sludge and MBR coupling device for removing microplastics from aquaculture wastewater according to claim 1 is characterized in that: A sewage discharge pipe (5) is arranged on the right side of the second processing box (2), and a valve is arranged on the sewage discharge pipe (5).

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