High-efficiency energy-saving anaerobic treatment system for breeding wastewater

Abstract

The invention discloses an efficient energy-saving anaerobic treatment system for aquaculture wastewater, and relates to the technical field of aquaculture wastewater treatment.The efficient energy-saving anaerobic treatment system comprises an IC anaerobic reactor used for wastewater treatment, and an anaerobic reaction device is additionally arranged in the IC anaerobic reactor; the anaerobic reaction device is provided with a medicament mixing box capable of mixing a granular medicament and a liquid medicament, and a medicament mixing disc is mounted in the medicament mixing box in a matched manner; when wastewater adjusted by the water quality adjusting tank is conveyed into the base through the water inlet hole, rotational flow of the wastewater is realized under the cooperation of the water distributor, and biogas is lifted to drive a mud-water mixed solution to flow. Then the wastewater is dispersed all around after overflowing the base, and at the moment, the driving shaft drives the stirring paddle to stir. Especially for treating wastewater with high viscosity and easy sludge deposition, or having extremely high requirements on operation stability, the stirring paddle can assist in internal circulation enhanced mixing; organic matters are fully degraded, and the overall COD removal rate of the wastewater is improved.

Description

Technical Field

[0001] The present invention specifically relates to the technical field of aquaculture wastewater treatment, and in particular is a high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater. Background Art

[0002] The IC anaerobic reactor uses bottom-influent water to mix with sludge. Under the action of high-concentration anaerobic sludge, most of the organic matter in the sewage is converted into biogas. Biogas contains toxic and harmful substances such as hydrogen sulfide and sulfite. First of all, these toxic and harmful substances will affect the normal activities of anaerobic microorganisms.

[0003] Chinese patent application No. 202120112358.9 discloses a purification device for an IC anaerobic reactor, which includes an air injection pipe and an air compressor. The air compressor is arranged on the air injection pipe, and one end of the air injection pipe is connected to the top gas phase zone of the IC anaerobic reactor.

[0004] The first reaction zone of the IC anaerobic reactor purification device described in the aforementioned patent utilizes a combination of water flow and a water distributor to achieve rotary water distribution. However, relying solely on the water distributor and biogas disturbance can lead to substrate "short-circuiting" (wastewater flowing away without sufficient contact with the sludge) or excessively high or low local sludge concentrations if the influent quality or quantity fluctuates (e.g., localized impact from high-concentration wastewater). This can result in inadequate organic matter degradation in some areas (excess substrate and insufficient sludge contact), or reduced sludge activity due to substrate depletion, ultimately impacting overall COD removal efficiency and increasing the burden of subsequent treatment.

[0005] If the influent contains a large amount of difficult-to-degrade substances (such as long-chain organic matter and complex aromatic hydrocarbons), the metabolism of hydrolytic acidifying bacteria is slow and auxiliary agents are needed to promote decomposition. The existing IC anaerobic reactor does not have the function of adding drugs. Summary of the Invention

[0006] The present invention aims to provide a highly efficient and energy-saving anaerobic treatment system for aquaculture wastewater. This system can agitate the wastewater during distribution, thereby ensuring sufficient contact between the wastewater and the bottom sludge, and preventing localized excessive or insufficient sludge concentrations. Furthermore, the system can enhance the stability of the anaerobic reaction by adding certain agents. This system addresses the technical issues raised in the aforementioned background art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater includes an IC anaerobic reactor for wastewater treatment, an anaerobic reaction device is additionally installed inside the IC anaerobic reactor; the anaerobic reaction device has a drug mixing box for mixing granular drugs and liquid drugs, and a drug mixing disk is installed inside the drug mixing box;

[0009] Several drainage pipes are evenly distributed around the four sides of the mixing box, and dispersion fins for emulsifying and dispersing the liquid medicine are provided at the bottom of the mixing box.

[0010] The medicine mixing disk is driven by a toothed column, and the toothed cylinder is mounted on the drive shaft; the lower end of the drive shaft extends into the connecting cylinder and is connected to the stirring paddle; the lower end of the stirring paddle is rotatably connected to the shaft cylinder in the middle of the base through a bearing;

[0011] The bottom side of the base is provided with a water distributor, and one side of the bottom of the base is also provided with a water inlet hole.

[0012] As a further technical solution of the present invention, the upper end of the discharge pipe is connected to a 90-degree joint, and the 90-degree joint is threadedly connected to the medicine mixing box; when the lower end of the medicine mixing plate is in contact with the bottom side of the medicine mixing box, the water outlet of the 90-degree joint can be blocked.

[0013] As a further technical solution of the present invention, the bottom of the medicine mixing box is fixed with brackets around it, and the brackets are fixed to the upper fixing plate by bolts; the bottom of the upper fixing plate is fixed with an upper connecting plate by bolts, and a lower connecting plate is provided below the upper connecting plate;

[0014] The bottom of the upper connecting disk and the top of the lower connecting disk are both provided with a slide groove; an upper gear disk is rotatably connected in the slide groove; a plurality of dispersed fins are provided in a circular array on the outer periphery of the upper gear disk and are fixed by screws.

[0015] As a further technical solution of the present invention, a plurality of C-shaped frames are provided in an annular array outside the upper and lower connecting plates; the upper ends of the C-shaped frames are fixed to the upper fixing plate by bolts, and the lower ends of the C-shaped frames are engaged with grooves on the lower fixing plate and fixed by bolts;

[0016] The outer sides of the upper fixing plate and the lower fixing plate are also buckled with protective nets, and the tops and bottoms of the two protective nets are fixed by locking clamps; the protective nets are located on the outer side of the C-shaped frame.

[0017] As a further technical solution of the present invention, the upper end of the base is fixed to the connecting tube by bolts, and the upper end of the connecting tube is fixed to the lower fixing plate.

[0018] As a further technical solution of the present invention, the lower end of the drive shaft has a lower gear shaft section, and the lower gear shaft section is inserted into the spline cylinder at the top of the stirring paddle;

[0019] A lower gear plate is installed in the middle position of the driving shaft with an interference fit, and an upper gear shaft section is also provided in the middle position of the driving shaft and is meshed with the gear; the gear is installed on the output shaft of the rotating motor; and the rotating motor is fixed to the semicircular plate on the inner side of the upper fixed plate.

[0020] As a further technical solution of the present invention, a fixed cylinder is provided in the middle of the medicine mixing box, which is raised upwards, and a return spring is sleeved on the outer side of the fixed cylinder;

[0021] The medicine mixing disc is provided with a shaft hole with a convex longitudinal section at the axis center, and is sleeved on the fixed cylinder; the reset spring is located in the convex shaft hole;

[0022] The top of the driving shaft is connected to the cylinder rod of the cylinder through a rotary connector, and the cylinder is fixed to the top of the medicine mixing box through a mounting bracket.

[0023] As a further technical solution of the present invention, a plurality of slots are provided at the bottom of the medicine mixing disk to facilitate the outflow of the medicine liquid; when the medicine mixing disk is lifted up by the return spring, the medicine liquid passes through the slots and is discharged along the drain pipe;

[0024] The upper surface of the fixing cylinder protruding upward in the middle of the medicine mixing disk is arranged in a tooth shape and is engaged with the teeth at the bottom of the toothed cylinder.

[0025] As a further technical solution of the present invention, the anaerobic reaction device is installed in the first reaction zone of the IC anaerobic reactor; the anaerobic reaction device is fixed on the equipment platform; a ladder is installed on one side of the equipment platform.

[0026] As a further technical solution of the present invention, at least one water quality regulating tank is provided on the equipment platform; the IC anaerobic reactor is connected to the water quality regulating tank via a pipeline;

[0027] The water quality regulating tank is connected to the sedimentation tank through a pipeline; a dosing device is also provided on one side of the sedimentation tank.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the present invention, when the wastewater adjusted by the water quality adjustment tank is transported to the base through the water inlet, the wastewater is swirled with the cooperation of the water distributor, and the biogas is lifted to drive the mud-water mixture to flow. After the wastewater overflows the base, it is dispersed to the surroundings, and at this time the driving shaft drives the stirring paddle to stir. Especially for the treatment of wastewater with high viscosity and easy deposition of sludge, or for extremely high requirements for operational stability (continuous production does not allow shutdown), the provision of the stirring paddle can assist the internal circulation and strengthen mixing; so that organic matter is fully degraded, and the overall COD removal rate of the wastewater is improved;

[0030] 2. In this invention, when the mixing disc is lifted by the return spring, the liquid medicine is discharged downward along the drain pipe. The upper gear disc drives the dispersion fins to rotate at high speed. A small gap is reserved between the dispersion fins and the C-shaped frame. Therefore, when the medicine is moved by the dispersion fins, the small gap can shear the particles in the medicine, mixing the medicine to achieve a better dispersion and emulsification effect. Moreover, when the dispersion fins are moved at high speed, the medicine and granular medicine are thrown onto the protective net, which can also achieve the effect of impact crushing and dispersion. This improves the mixing effect of the liquid medicine and wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0032] Figure 2 In the present invention Figure 1 Schematic diagram from another perspective.

[0033] Figure 3 In the present invention Figure 1 rear view.

[0034] Figure 4 It is a schematic structural diagram of the IC anaerobic reactor in the present invention.

[0035] Figure 5 In the present invention Figure 5 main view.

[0036] Figure 6 In the present invention Figure 5 AA cross-sectional view.

[0037] Figure 7 It is a structural schematic diagram of the anaerobic reaction device in the present invention.

[0038] Figure 8 In the present invention Figure 7 BB cross-sectional view.

[0039] Figure 9 It is a schematic diagram of the three-dimensional structure of the anaerobic reaction device in the present invention.

[0040] Figure 10 In the present invention Figure 9 Schematic diagram of the split structure.

[0041] Figure 11 In the present invention Figure 10 Schematic diagram from another perspective.

[0042] Figure 12 In the present invention Figure 11 Schematic diagram from another perspective.

[0043] Figure 13 In the present invention Figure 8 A partial enlarged schematic diagram.

[0044] Figure 14 In the present invention Figure 10 A partial enlarged schematic diagram.

[0045] Figure 15 In the present invention Figure 11 A partial enlarged schematic diagram.

[0046] Figure 16 It is a structural schematic diagram of the medicine mixing disk of the present invention.

[0047] Figure 17 It is a structural schematic diagram of the drive shaft in the present invention.

[0048] Figure 18 In the present invention Figure 17 Schematic diagram of the bottom structure.

[0049] In the figure: 1- sedimentation tank, 2- dosing device, 3- equipment platform, 4- ladder, 5- water quality adjustment tank, 6- IC anaerobic reactor, 7- anaerobic reaction device, 8- sludge pipe;

[0050] 71-medicament mixing box, 72-medicament mixing plate, 73-drain pipe, 74-bracket, 75-upper fixed plate, 76-upper connecting plate, 77-lower connecting plate, 78-dispersing fins, 79-upper gear plate, 710-C-type frame, 711-lower fixed plate, 712-lower gear plate, 713-locking clamp, 714-connecting cylinder, 715-base, 716-water distributor, 717-stirring paddle, 718-drive shaft, 719-mounting bracket, 720-cylinder, 721-protective net, 722-reset spring, 723-gear, 724-rotating motor, 725-toothed cylinder;

[0051] 7181-upper gear shaft section, 7182-lower gear shaft section. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0053] See also Figures 1 to 18In an embodiment of the present invention, a high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater includes an anaerobic reaction device 7, which is installed in a first reaction zone of an IC anaerobic reactor 6; the anaerobic reaction device 7 is fixed to an equipment platform 3; a ladder 4 is installed on one side of the equipment platform 3; at least one water quality adjustment tank 5 is provided on the equipment platform 3; the IC anaerobic reactor 6 is connected to the water quality adjustment tank 5 through a pipeline;

[0054] The water quality regulating tank 5 is connected to the sedimentation tank 1 through a pipeline; a dosing device 2 is also provided on one side of the sedimentation tank 1.

[0055] As a further illustration of the above embodiment, combined with the water quality characteristics and treatment objectives, the purpose of anaerobic treatment of aquaculture wastewater is to remove a large amount of suspended solids (SS), fibrous impurities and solid organic matter (such as livestock and poultry manure, feed residues) in the wastewater to avoid clogging subsequent equipment or causing sludge loss in the anaerobic reactor.

[0056] Pretreatment is carried out by setting up a sedimentation tank 1 with a grid filtration function. The coarse grid (aperture 5-20mm) intercepts large particles of impurities, and the fine screen (100-200 mesh) filters fibrous substances; the sedimentation tank 1 removes inorganic sand particles and some organic suspended matter through gravity sedimentation, with a residence time of 1-2 hours.

[0057] The precipitated wastewater is transported to the water quality adjustment tank 5 through the cooperation of pumps and pipelines. Then, the dosing device 2 is used to transport the liquid medicine to the water quality adjustment tank 5 for water quality adjustment. The volume of the water quality adjustment tank 5 is designed for 8-12 hours and is equipped with a stirring device (mechanical stirring or aeration) to make the water quality uniform. If the wastewater is acidic (such as fermentation wastewater pH <5), NaOH, Increase the alkalinity to 6.5-7.5; if it is too alkaline, add dilute sulfuric acid to adjust;

[0058] The wastewater after water quality adjustment is transported to the anaerobic reaction device 7 inside the IC anaerobic reactor 6 for further treatment. The sludge produced in the sedimentation tank 1 is transported to the filter press through the sludge pipe 8 for treatment.

[0059] It should be noted that the water treated in the anaerobic reaction device 7 enters the IC anaerobic reactor 6. The working principle of the IC anaerobic reactor 6 is consistent with that of a traditional anaerobic reaction, and thus its specific principle will not be described in detail.

[0060] An IC anaerobic reactor 6 for wastewater treatment is provided with an anaerobic reaction device 7 inside the IC anaerobic reactor 6; the anaerobic reaction device 7 includes a reagent mixing box 71 for mixing granular reagents and liquid reagents, and a reagent mixing disk 72 is installed inside the reagent mixing box 71;

[0061] Several drainage pipes 73 are evenly distributed around the medicine mixing box 71, and dispersion fins 78 for emulsifying and dispersing the medicine liquid are provided below the medicine mixing box 71;

[0062] The drug mixing disk 72 is driven by a toothed column 725, which is mounted on a drive shaft 718. The lower end of the drive shaft 718 extends into the connecting cylinder 714 and is connected to the stirring paddle 717. The lower end of the stirring paddle 717 is rotatably connected to the shaft cylinder in the middle of the base 715 via a bearing.

[0063] The bottom side of the base 715 is provided with a water distributor 716 , and one side of the bottom of the base 715 is also provided with a water inlet hole.

[0064] As a further illustration of the above embodiment, the IC reactor has a large height-to-diameter ratio (usually 4-8). If the bottom mixing zone relies solely on water distribution and biogas mixing, for low-flow rate, high-viscosity wastewater (such as high-starch / grease wastewater), sludge is easily deposited at the bottom of the reactor and in dead corners (such as near the water distributor).

[0065] The deposited sludge will clog the water distribution holes and the internal circulation downcomers, destroying the dynamic balance of the internal circulation "biogas lifting-mud and water return". In severe cases, it will cause the internal circulation to be paralyzed, the reactor's processing capacity will be greatly reduced, and it may even need to be shut down for cleaning.

[0066] Without agitation, the IC anaerobic reactor has a weak buffering capacity for sudden changes in aquaculture wastewater quality, such as pH and toxic shocks. For example, localized accumulation of toxic substances cannot be quickly diluted, which can quickly inhibit sludge activity. pH fluctuations are also difficult to quickly equalize through mixing. Reactors are prone to acidification (VFA accumulation) and sudden drops in biogas production due to shock loads, resulting in long recovery periods and impacting continuous operational stability.

[0067] By adopting the above-described technical solution, when the wastewater conditioned by the water quality conditioning tank 5 is delivered to the base 715 through the water inlet, the wastewater is swirled in cooperation with the water distributor 716, and the biogas lift drives the mud-water mixture. The wastewater then overflows the base 715 and disperses in all directions, at which point the drive shaft 718 drives the stirring paddle 717 to stir. Especially for treating wastewater with high viscosity and prone to sludge deposition, or for those with extremely high requirements for operational stability (continuous production without downtime), the provision of the stirring paddle 717 can assist in enhancing internal circulation and mixing, thereby fully degrading organic matter and improving the overall COD removal rate of the wastewater.

[0068] Please see the attached Figure 7-15 In this embodiment, the upper end of the drainage pipe 73 is connected with a 90-degree joint, and the 90-degree joint is threadedly connected to the medicine mixing box 71; when the lower end of the medicine mixing plate 72 is in contact with the bottom side of the medicine mixing box 71, the water outlet of the 90-degree joint can be blocked.

[0069] The bottom of the medicine mixing box 71 is fixed with brackets 74 around it, and the brackets 74 are fixed to the upper fixing plate 75 by bolts; the bottom of the upper fixing plate 75 is fixed with an upper connecting plate 76 by bolts, and a lower connecting plate 77 is provided below the upper connecting plate 76;

[0070] The bottom of the upper connecting disk 76 and the top of the lower connecting disk 77 are both provided with a slide groove; an upper toothed disk 79 is rotatably connected in the slide groove; a plurality of dispersed fins 78 are provided on the outer periphery of the upper toothed disk 79 in a circular array and fixed by screws.

[0071] More specifically, a plurality of C-shaped frames 710 are arranged in a circular array outside the upper connecting plate 76 and the lower connecting plate 77. The upper ends of the C-shaped frames 710 are fixed to the upper fixing plate 75 by bolts, and the lower ends of the C-shaped frames 710 are engaged with grooves on the lower fixing plate 711 and fixed by bolts.

[0072] The upper and lower fixing plates 75 and 711 are also secured with protective nets 721 at their tops and bottoms via locking clamps 713. The protective nets 721 are located outside the C-shaped frame 710. The upper end of the base 715 is secured to the connecting tube 714 via bolts, which in turn secure the upper end of the connecting tube 714 to the lower fixing plate 711.

[0073] In addition, anaerobic microbial metabolism requires an appropriate carbon, nitrogen and phosphorus ratio (usually C:N:P≈200-300:5:1). If the influent is deficient in nitrogen / phosphorus, it will limit the growth and metabolic activity of the bacterial community.

[0074] Therefore, it is necessary to add chemicals to the wastewater during anaerobic treatment. Common chemicals include: nitrogen source: ammonium chloride ( ) or urea (low cost, supplement );

[0075] The above-mentioned reagents are in the form of liquid or granular solids. In order to ensure that the reagents can be fully mixed with the wastewater, the particles in the reagents need to be emulsified and dispersed, thereby improving the mixing effect with the wastewater.

[0076] To this end, we have set up a medicine mixing box 71. Liquid medicine and granular medicine are placed in the medicine mixing box 71. The drive shaft 718 drives the medicine mixing disk 72 to fully mix the medicine. When the medicine mixing disk 72 is lifted by the return spring 722, the medicine liquid is discharged downward along the discharge pipe 73. The upper gear plate 79 drives the dispersion fins 78 to rotate at high speed. A small gap is reserved between the dispersion fins 78 and the C-shaped frame 710. Therefore, when the medicine is moved by the dispersion fins 78, the small gap can shear the particles in the medicine, mixing the medicine to achieve a better dispersion and emulsification effect. Moreover, when the dispersion fins 78 are moved at high speed, the medicine and granular medicine are thrown onto the protective net 721, which can also achieve the effect of impact crushing and dispersion. This improves the mixing effect of the medicine liquid and wastewater.

[0077] Please see the attached Figure 17-18 In this embodiment, the lower end of the driving shaft 718 has a lower gear shaft section 7182, and the lower gear shaft section 7182 is inserted into the spline cylinder at the top of the stirring paddle 717;

[0078] The lower gear plate 712 is installed with an interference fit in the middle position of the driving shaft 718, and an upper gear shaft section 7181 is also provided in the middle position of the driving shaft 718, and is meshed with the gear 723; the gear 723 is installed on the output shaft of the rotating motor 724; and the rotating motor 724 is fixed to the semicircular plate on the inner side of the upper fixed plate 75.

[0079] Specifically, the middle of the medicine mixing box 71 is provided with a fixed cylinder protruding upward, and a return spring 722 is sleeved on the outer side of the fixed cylinder;

[0080] The medicine mixing disk 72 has a convex longitudinal cross-section axial hole at its axis, and is sleeved on the fixed cylinder; the return spring 722 is located in the convex axial hole;

[0081] The top of the drive shaft 718 is connected to the cylinder rod of the cylinder 720 via a rotary connector, and the cylinder 720 is fixed to the top of the medicine mixing box 71 via a mounting bracket 719. A plurality of notches are provided at the bottom of the medicine mixing tray 72 to facilitate the outflow of the medicine liquid; when the medicine mixing tray 72 is lifted by the return spring 722, the medicine liquid passes through the notches and is discharged along the drain pipe 73;

[0082] The upper surface of the upwardly protruding fixed cylinder in the middle of the medicine mixing disk 72 is arranged in a tooth shape and engages with the teeth at the bottom of the toothed cylinder 725.

[0083] By adopting the above technical solution, under normal conditions, the lower gear shaft section 7182 at the lower end of the drive shaft 718 is inserted into the spline cylinder at the upper end of the stirring paddle 717. At this time, the lower end of the toothed cylinder 725 is engaged with the medicine mixing disk 72, and the medicine mixing disk 72 presses the return spring 722 downward. The 90-degree joint port is blocked on all sides of the medicine mixing disk 72. Then, the medicine is poured into the medicine mixing box 71. The rotating motor 724 drives the drive shaft 718 to rotate at high speed through the engagement of the gear 723 and the upper gear shaft section 7181. The medicine mixing disk 72 mixes the medicine liquid in the medicine mixing box 71.

[0084] The stirring paddle 717 can also achieve stirring treatment of wastewater during water distribution.

[0085] After the sewage is discharged, the cylinder rod of the cylinder 720 contracts, driving the drive shaft 718 to move upward. At this time, the lower gear shaft section 7182 at the lower end of the drive shaft 718 is separated from the stirring paddle 717, and the stirring paddle 717 no longer rotates; at the same time, the toothed cylinder 725 is separated from the drug mixing disk 72; the return spring 722 lifts the drug mixing disk 72, and the drug liquid passes through the drug mixing disk 72 and is discharged through the 90-degree joint and the drain pipe 73 into the space between the dispersion fins 78 and the C-shaped frame 710;

[0086] As the drive shaft 718 moves upward, the lower gear disc 712 engages with the upper gear disc 79 and drives the upper gear disc 79 to rotate at high speed. The upper gear disc 79 drives the dispersion fins 78 arranged on the outside to achieve dispersion and emulsification of the liquid medicine in cooperation with the C-shaped frame 710.

[0087] The working principle of the present invention is as follows: under normal conditions, the lower gear shaft section 7182 at the lower end of the drive shaft 718 is inserted into the spline cylinder at the upper end of the stirring paddle 717. At this time, the lower end of the toothed cylinder 725 is engaged with the medicine mixing disk 72, and the medicine mixing disk 72 presses the return spring 722 downward. The medicine mixing disk 72 blocks the port of the 90-degree joint on all sides. Then, the medicine is poured into the medicine mixing box 71. The rotating motor 724 drives the drive shaft 718 to rotate at high speed through the engagement of the gear 723 and the upper gear shaft section 7181. The medicine mixing disk 72 mixes the medicine liquid in the medicine mixing box 71.

[0088] The stirring paddle 717 can also achieve stirring treatment of wastewater during water distribution.

[0089] After the sewage is discharged, the cylinder rod of the cylinder 720 contracts, driving the drive shaft 718 to move upward. At this time, the lower gear shaft section 7182 at the lower end of the drive shaft 718 is separated from the stirring paddle 717, and the stirring paddle 717 no longer rotates; at the same time, the toothed cylinder 725 is separated from the drug mixing disk 72; the return spring 722 lifts the drug mixing disk 72, and the drug liquid passes through the drug mixing disk 72 and is discharged through the 90-degree joint and the drain pipe 73 into the space between the dispersion fins 78 and the C-shaped frame 710;

[0090] As the drive shaft 718 moves upward, the lower gear disc 712 engages with the upper gear disc 79 and drives the upper gear disc 79 to rotate at high speed. The upper gear disc 79 drives the dispersion fins 78 arranged on the outside to achieve dispersion and emulsification of the liquid medicine in cooperation with the C-shaped frame 710.

[0091] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0092] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater, characterized by: An IC anaerobic reactor (6) for wastewater treatment is provided, wherein an anaerobic reaction device (7) is additionally provided inside the IC anaerobic reactor (6); the anaerobic reaction device (7) has a drug mixing box (71) for mixing granular drugs and liquid drugs, and a drug mixing disk (72) is installed inside the drug mixing box (71); A plurality of drainage pipes (73) are evenly distributed along the four sides of the drug mixing box (71), and a dispersion fin (78) for emulsifying and dispersing the drug solution is provided below the drug mixing box (71); The medicine mixing disk (72) is driven by the toothed column (725), and the toothed cylinder (725) is mounted on the drive shaft (718); the lower end of the drive shaft (718) extends into the connecting cylinder (714) and is connected to the stirring paddle (717); the lower end of the stirring paddle (717) is rotatably connected to the shaft cylinder in the middle of the base (715) through a bearing; The bottom side of the base (715) is provided with a water distributor (716), and one side of the bottom of the base (715) is also provided with a water inlet hole.

2. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 1 is characterized in that: The upper end of the liquid discharge pipe (73) is connected to a 90-degree joint, and the 90-degree joint is threadedly connected to the medicine mixing box (71); when the lower end of the medicine mixing plate (72) is attached to the bottom side of the medicine mixing box (71), the water outlet of the 90-degree joint can be covered.

3. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 1 is characterized in that: The bottom of the medicine mixing box (71) is fixed with brackets (74) around it, and the brackets (74) are fixed to the upper fixing plate (75) by bolts; the bottom of the upper fixing plate (75) is fixed with an upper connecting plate (76) by bolts, and a lower connecting plate (77) is provided below the upper connecting plate (76); The bottom of the upper connecting disk (76) and the top of the lower connecting disk (77) are both provided with a slide groove; an upper toothed disk (79) is rotatably connected in the slide groove; the outer periphery of the upper toothed disk (79) is provided with a plurality of dispersed fins (78) in a circular array and fixed by screws.

4. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 3 is characterized in that: The outer annular array of the upper connecting plate (76) and the lower connecting plate (77) has a plurality of C-shaped frames (710); the upper ends of the C-shaped frames (710) are fixed to the upper fixing plate (75) by bolts, and the lower ends of the C-shaped frames (710) are engaged with the grooves on the lower fixing plate (711) and fixed by bolts; The outer sides of the upper fixing plate (75) and the lower fixing plate (711) are further buckled with a protective net (721), and the top and bottom of the two protective nets (721) are fixed by a locking clamp (713); the protective net (721) is located on the outer side of the C-shaped frame (710).

5. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 1 is characterized in that: The upper end of the base (715) is fixed to the connecting tube (714) by bolts, and the upper end of the connecting tube (714) is fixed to the lower fixing plate (711).

6. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 1 is characterized in that: The lower end of the driving shaft (718) has a lower gear shaft section (7182), and the lower gear shaft section (7182) is inserted into the spline cylinder at the top of the stirring paddle (717); A lower gear disc (712) is installed in an interference fit at the middle position of the driving shaft (718), and an upper gear shaft section (7181) is also provided at the middle position of the driving shaft (718) and is meshed with the gear (723); the gear (723) is installed on the output shaft of the rotating motor (724); and the rotating motor (724) is fixed to the semicircular plate on the inner side of the upper fixed disc (75).

7. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 1 is characterized in that: The medicine mixing box (71) is provided with a fixed cylinder protruding upward in the middle, and a return spring (722) is sleeved on the outer side of the fixed cylinder; The medicine mixing disk (72) is provided with a shaft hole with a convex longitudinal section at the axis center position and is sleeved on the fixed cylinder; the return spring (722) is located in the convex shaft hole; The top of the driving shaft (718) is connected to the cylinder rod of the cylinder (720) via a rotary connector, and the cylinder (720) is fixed to the top of the medicine mixing box (71) via a mounting bracket (719).

8. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 1 is characterized in that: A plurality of slots are provided at the bottom of the medicine mixing disk (72) to facilitate the outflow of the medicine liquid; when the medicine mixing disk (72) is lifted up by the return spring (722), the medicine liquid passes through the slots and is discharged along the drain pipe (73); The upper surface of the upwardly protruding fixed cylinder in the middle of the medicine mixing disk (72) is arranged in a toothed shape and engages with the teeth at the bottom of the toothed cylinder (725).

9. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 1 is characterized in that: The anaerobic reaction device (7) is installed in the first reaction zone of the IC anaerobic reactor (6); the anaerobic reaction device (7) is fixed on the equipment platform (3); a ladder (4) is installed on one side of the equipment platform (3).

10. The high-efficiency and energy-saving anaerobic treatment system for aquaculture wastewater according to claim 9, characterized in that: At least one water quality regulating tank (5) is provided on the equipment platform (3); the IC anaerobic reactor (6) is connected to the water quality regulating tank (5) via a pipeline; The water quality regulating tank (5) is connected to the sedimentation tank (1) through a pipeline; a dosing device (2) is also provided on one side of the sedimentation tank (1).

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