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CN-121990706-A - Treatment device for tail water containing microplastic and antibiotic breeding

CN121990706ACN 121990706 ACN121990706 ACN 121990706ACN-121990706-A

Abstract

The invention relates to the technical field of tail water treatment systems, and discloses a treatment device for micro-plastic and antibiotic-containing breeding tail water, which comprises a bottom plate, wherein a material injection mechanism is arranged on the bottom plate, a preliminary filtering mechanism is connected to the material injection mechanism, the tail end of the material injection mechanism is connected with a micro-plastic treatment mechanism, when breeding tail water enters the preliminary filtering mechanism through a water injection cylinder, the rotation of the rotary cylinder is driven under the impact action of a driving plate and water flow, a hemispherical block is enabled to continuously strike a filter plate, the vibration action of a filter plate spring is combined, the filter screen is effectively prevented from being blocked by suspended particles, residual baits and other impurities, meanwhile, filter residues are automatically guided into a collecting box through intermittent opening and closing of a release gear and the baffle plate, the automatic cleaning and efficient operation of a filtering process are realized, and the device is particularly suitable for the aquaculture tail water with high suspended matter content, the pretreatment efficiency can be remarkably improved, and the stable operation of a subsequent treatment unit is ensured.

Inventors

  • SUN PENGFEI
  • YANG YANG
  • Tan Yongyu
  • Ding Qunan
  • QU YI
  • Jia Renming
  • WANG SHI
  • YANG TINGLONG

Assignees

  • 自然资源部第四海洋研究所(中国—东盟国家海洋科技联合研发中心)

Dates

Publication Date
20260508
Application Date
20251226

Claims (10)

  1. 1. The treatment device for the micro-plastic and antibiotic cultivation tail water is characterized by comprising a bottom plate (1), wherein a material injection mechanism is arranged on the bottom plate (1), a preliminary filtering mechanism is connected to the material injection mechanism, the tail end of the material injection mechanism is connected with a micro-plastic treatment mechanism, the lower side of the micro-plastic treatment mechanism is connected with an eutrophic wastewater treatment mechanism, the lower side of the eutrophic wastewater treatment mechanism is connected with a deep purification mechanism, the lower side of the deep purification mechanism is connected with a disinfection mechanism, and the lower side of the disinfection mechanism is connected with a discharge mechanism; The material injection mechanism is used for injecting the aquaculture tail water, the preliminary filtering mechanism is used for filtering suspended particles, residual baits, plant scraps and the like in the intercepted tail water, the blocking of a subsequent purifying area is avoided, the micro-plastic treatment mechanism is used for removing micro-plastic in the tail water, the eutrophic wastewater treatment mechanism is used for removing nutrient substances in wastewater, the deep purification mechanism is used for deeply purifying and filtering the tail water, the disinfection mechanism is used for carrying out final disinfection on the wastewater, and the discharge mechanism is used for discharging the tail water.
  2. 2. The treatment device for the micro-plastic and antibiotic cultivation tail water according to claim 1, wherein the test injection mechanism comprises a water injection cylinder frame (2) arranged on the bottom plate (1), a water injection cylinder (3) is arranged on the water injection cylinder frame (2), the lower part of the water injection cylinder (3) is connected with the tail end of one side of a water injection pipe (5), the tail end of the other side of the water injection pipe (5) is connected with an injection pump (7), the injection pump (7) is arranged at the top of a treatment tank (8), a plurality of supporting legs (9) are arranged at the lower part of the treatment tank (8), the supporting legs (9) are welded on the bottom plate (1), and the water injection pipe (5) is arranged on the bottom plate (1) through a locking component (6); the locking assembly (6) comprises a supporting table third separation channel (601), a locking clamp third separation channel (602) and a bolt third separation channel (603), wherein the supporting table third separation channel (601) is arranged on the bottom plate (1), and the water injection pipe (5) is locked on the supporting table third separation channel (601) through the locking clamp third separation channel (602) and the bolt third separation channel (603).
  3. 3. The treatment device for micro-plastic and antibiotic breeding tail water according to claim 2, wherein the preliminary filtering mechanism comprises a collecting box (4) arranged on the water injection cylinder (3), a plurality of filter plate spring seats (29) are arranged on the inner end wall of the water injection cylinder (3), filter plate springs (28) are connected to the upper part of the filter plate spring seats (29), the filter plate springs (28) are connected with the filter plate (27), a driving shaft (31) is connected to the water injection cylinder (3) on the lower side of the filter plate (27) in a penetrating and rotating mode, a rotary drum (91) is fixedly arranged on the outer surface of the driving shaft (31), a plurality of driving plates (30) are uniformly and fixedly connected to the outer surface of the rotary drum (91) between the adjacent driving plates (30), a plurality of fixing cylinders (89) are uniformly and fixedly connected to the outer surface of the rotary drum (91), a sliding rod (32) is slidably connected to the inner side of the fixing cylinders (89), a hemispherical block (32) is fixedly connected to the inner side of the hemispherical block (89), a hemispherical block (33) is fixedly connected to the bottom wall (90), the end of one side of the driving shaft (31) extends into the transmission box (23), the transmission box (23) is fixedly arranged on the water injection cylinder (3) and is connected with the collecting box (4), the end of the driving shaft (31) is fixedly connected with a driving pulley (77), the driving pulley (77) and a driven pulley (75) are connected and transmitted through a belt (76), the driven pulley (75) is fixedly arranged at the end of a pulley shaft (74), the pulley shaft (74) is rotatably arranged in the transmission box (23), the outer surface of the pulley shaft (74) is fixedly connected with a driving incomplete gear (73), the driving incomplete gear (73) is meshed with the transmission gear (72), the transmission gear (72) is fixedly arranged at the end of an incomplete gear shaft (70), the incomplete gear shaft (70) is rotatably arranged in the transmission box (23), the outer surface of the incomplete gear shaft (70) is fixedly provided with a release gear (68), the release gear (68) is rotatably arranged in the transmission box (23) in a penetrating way, and extends into the collecting box (62) and is communicated with the collecting channel (4), the water injection cylinder (3) is communicated with the collecting channel (4), the release gear (68) extends into the filtering and collecting channel (62), a baffle (50) is fixedly arranged on the outer surface of the release gear (68) in the filtering and collecting channel (62), and a torsion spring (67) is connected between the release gear (68) and the collecting box (4); The filtering and collecting channel (62) is arranged on the upper side of the filtering plate (27) and is close to the filtering plate (27), the baffle (50) is connected with the end wall of the filtering and collecting channel (62) in a sliding manner and is sealed, and the bottom wall of the filtering and collecting channel (62) is inclined at a certain angle and is inclined towards the collecting box (4); The filter plates (27) are obliquely arranged at a certain angle, the central line positions of the filter plates (27) are downwards concave, and the two sides of the filter plates are convex, so that the central line positions are provided with V-shaped grooves, and filtered residues and the like can smoothly enter the filtering and collecting channels (62); the incomplete gear shaft (70) is rotatably arranged on the collecting box (4) and has a certain friction force to prevent free rotation.
  4. 4. A treatment device for micro-plastic and antibiotic cultivation tail water is characterized in that the micro-plastic treatment mechanism comprises a filter screen frame (38) which is uniformly and fixedly arranged in a treatment tank (8), a plastic wood-based filter material, modified volcanic rock, modified activated carbon and diatomite composite adsorption material are respectively filled and arranged in the filter screen frame (38) from top to bottom, a stirring shaft (35) is penetrated and rotatably connected in the middle of the filter screen frame (38), the top of the stirring shaft (35) is rotatably connected with a transverse frame (25), the transverse frame (25) is fixedly arranged on the treatment tank (8) in a penetrating manner, a stirring driven pulley shaft (82) is rotatably connected with the stirring driven pulley shaft (35), a stirring driven pulley (81) is fixedly arranged on the outer surface of the stirring driven pulley shaft (82), a stirring driving pulley (81) is connected with a driving pulley (79) through a stirring belt (80), a stirring driving pulley (79) is fixedly arranged on the outer surface of the stirring pulley (8), a stirring motor (78) is fixedly arranged on the outer surface of the stirring pulley shaft (8), the stirring driven pulley (78) is fixedly connected with the stirring pulley shaft (78) on the outer surface of the stirring shaft (8), the utility model provides a stirring axle (35) is gone up fixedly connected with extraction frame (37), be equipped with extraction chamber (88) in extraction frame (37), extraction chamber (88) with locate hollow section (83) in (35) communicate, extraction frame (37) with filter screen rack (38) upside surface contact, it is equipped with a plurality of extraction passageway (86) to run through on extraction chamber (88) diapire, install pressure valve (87) between extraction passageway (86) end wall, (35) surface rotation is connected with drum (84), drum (84) with pass through between hollow section (83) a plurality of connecting hole (85) that run through on hollow section (83) end wall are equipped with, be connected with extraction pipe (34) one side end on drum (84), extraction pipe (34) opposite side end and collection tank (15) internal communication, collection tank (15) are installed through mounting bracket (13) are in the processing jar (8) outside, install on collection tank (15) pressure valve (14), collection tank (15) are equipped with vacuum pump (26) drain valve portion.
  5. 5. The treatment device for the micro-plastic and antibiotic cultivation tail water according to claim 4, wherein an antibiotic treatment mechanism is arranged in the treatment tank (8), the antibiotic treatment mechanism is arranged on the lower side of the micro-plastic treatment mechanism, the antibiotic treatment mechanism comprises a protective shell (39) uniformly and fixedly arranged on the inner side surface of the treatment tank (8), a cleaning spray head (53) is arranged in the protective shell (39), a plurality of stirring rods (40) are uniformly and rotatably connected to the outer surface of a stirring shaft (35) on the lower side of the filter screen frame (38), stirring plates (41) are uniformly and fixedly arranged on the outer surface of the stirring rods (40), an oxidizer supply tank (17) is fixedly arranged on the outer surface of the treatment tank (8), and an oxidizer supply spray head (36) is fixedly connected to the inner side end wall of the treatment tank (8), and an oxidizer supply valve (63) is connected between the oxidizer supply spray head (36) and the oxidizer supply tank (17); The treatment tank is characterized in that a plurality of antibiotic treatment ultraviolet emitters (54) are fixedly arranged on the end wall of the treatment tank (8), the antibiotic treatment ultraviolet emitters (54) are arranged in one-to-one correspondence with the protective shells (39), a water tank (16) is fixedly arranged on the treatment tank (8), a cleaning water pump (24) is arranged on the water tank (16), the cleaning water pump (24) is communicated with the water tank (16), a cleaning water pipe (12) is connected to the cleaning water pump (24), and the cleaning water pipe (12) is communicated with the antibiotic treatment ultraviolet emitters (54).
  6. 6. The treatment device for the micro-plastic and antibiotic breeding tail water is characterized in that a resistance gene treatment mechanism is arranged on the end wall of the treatment tank (8), the resistance gene treatment mechanism comprises a first partition plate (42) fixedly arranged in the treatment tank (8), a plurality of first partition channels (55) are penetrated through the first partition plate (42), a first partition valve (56) is fixedly arranged between the end walls of the first partition channels (55), a pH value detector (52) and an ozone concentration sensor (51) are fixedly arranged on the first partition plate (42), an ozone tank (20) is fixedly arranged on the outer side of the treatment tank (8), the ozone tank (20) is communicated with the treatment tank (8) through an ozone injection valve (61), and a control box (11) is fixedly arranged on the outer side of the treatment tank (8).
  7. 7. The treatment device for the wastewater containing microplastic and antibiotic breeding tail water according to claim 6, wherein the eutrophic wastewater treatment mechanism comprises polyurethane sponge (47) symmetrically and fixedly arranged in the treatment tank (8) at the lower side of the first partition plate (42), a second partition plate (43) is fixedly arranged in the treatment tank (8), a plurality of second partition channels (58) are penetrated through the second partition plate (43), and second partition valves (57) are fixedly arranged in the second partition channels (58); Nitrifying bacteria and phosphorus accumulating bacteria are attached to the polyurethane sponge (47) on one side, and denitrifying bacteria are attached to the polyurethane sponge (47) on the other side.
  8. 8. The device for treating the tail water containing the microplastic and the antibiotic breeding according to claim 7, wherein the deep purification mechanism comprises a plurality of purification net racks (48) which are uniformly arranged in the treatment tank (8), activated carbon, oyster shells and zeolite are filled in the purification net racks (48) from top to bottom at one time, a third separation plate (44) is arranged in the treatment tank (8), a third separation channel (60) is penetrated and processed on the third separation plate (44), and a third separation valve (59) is fixedly arranged between the end walls of the third separation channel (60).
  9. 9. The treatment device for the tail water containing the microplastic and the antibiotic according to claim 8, wherein the disinfection mechanism comprises a plurality of ultraviolet disinfection instruments (45) which are uniformly and fixedly arranged in the treatment tank (8).
  10. 10. The device for treating tail water containing microplastic and antibiotic according to claim 9, wherein the discharging mechanism comprises a plugging block (21) arranged at the lower part of the treatment tank (8), a water quality detector (46) is arranged on the plugging block (21), a discharging pipe (22) is connected to the plugging block (21), the discharging pipe (22) is connected with a discharging pump fixedly arranged on the plugging block (21), pumping pumps (65) are symmetrically arranged on the plugging block (21), the pumping pumps (65) are connected with a water return pipe (10), the water return pipe (10) is provided with a plurality of branches, each different branch is connected to a different position of the treatment tank (8), and a control valve (66) is arranged in each branch.

Description

Treatment device for tail water containing microplastic and antibiotic breeding Technical Field The invention belongs to the technical field of tail water treatment systems, and particularly relates to a treatment device for micro-plastic and antibiotic-containing breeding tail water. Background As the biggest aquaculture country worldwide, the annual output of aquaculture in China is more than 6000 ten thousand tons continuously for more than 20 years, which accounts for more than 60% of the total output worldwide, and provides key support for guaranteeing grain safety and civil supply. However, with the large-scale and intensive development of industries, the problem of tail water pollution is increasingly remarkable, and the problem of tail water pollution becomes a core bottleneck for restricting the sustainable development of aquaculture. According to the latest data of the Chinese fishery ecological environment state publication, in an aquaculture area monitored mainly nationally in 2024, nearly 30% of aquaculture tail water does not meet the standard of the freshwater pond aquaculture water discharge requirement (GB 3838-2002), wherein the tail water exceeding rate of industrial aquaculture and high-density pond aquaculture is higher than 45%, and the problem of combined pollution of four types of characteristic pollutants is particularly remarkable. The source of the microplastic pollution covers the aging and falling of plastic films and bait casting machine parts used in the cultivation process, and compound feed containing microplastic additives, the particle size of microplastic in tail water is concentrated at 0.1-5mm, part of nano-grade microplastic (< 100 nm) can penetrate through the cell membrane of cultivated living beings, the enrichment rate in the liver and muscle of fish exceeds 85 percent, and the microplastic pollution is transmitted to human beings step by step through a food chain, and organ damage and metabolic disturbance can be caused by long-term ingestion. And secondly, antibiotics are remained, so that in order to prevent and control bacterial diseases, antibiotics such as florfenicol, enrofloxacin, terramycin and the like are commonly used in the cultivation process, and excessive and overscan use phenomena exist in part of farms, so that the detection concentration of the antibiotics in tail water is generally over 100ng/L and can reach 500ng/L at most, and the detection concentration exceeds the safety threshold of a water body. Thirdly, resistance genes are diffused, bacteria in water are induced to generate resistance genes by long-term abuse of antibiotics, relevant researches show that the detection rate of the resistance genes in the culture tail water is more than 60%, the abundance of the tetracycline and fluoroquinolone resistance genes is highest, and the tetracycline and fluoroquinolone resistance genes can be transmitted to a natural water area through water body flowing and biological migration, so that potential threat is formed to public health safety. Fourthly, the eutrophication problem is that residual baits and the excrement of cultured organisms accumulate in the water body, so that the total nitrogen concentration in the tail water always reaches 10-20mg/L, the total phosphorus concentration reaches 1-3mg/L, which are 5-10 times and 10-30 times of the III class standard of the surface water respectively, and after a large amount of nitrogen and phosphorus are discharged into the natural water body, algae overgrowth, dissolved oxygen sudden drop, red tide and water bloom are easily induced, and water ecological balance is destroyed. At present, the tail water treatment technology adopted by most breeding bodies still has obvious limitations that the traditional physical filtering equipment can only remove large-particle impurities, has insufficient effect of removing micro-plastic, antibiotics and other small-molecule pollutants, the single biological treatment technology can relieve eutrophication, but has limited capability of removing resistance genes and micro-plastic, and the chemical oxidation method can degrade antibiotics, but is easy to produce secondary pollution, and is difficult to solve various pollution problems synchronously. Therefore, the research and development of the integrated device capable of synchronously treating the multiple pollutants has urgent practical demands and important environmental protection value. Disclosure of Invention In view of the above, in order to overcome the defects in the prior art, the present invention provides a treatment device for tail water containing microplastic and antibiotic breeding, which effectively solves the problems mentioned in the background art. The invention provides a technical scheme for realizing the aim, which aims at a treatment device for micro-plastic and antibiotic cultivation tail water, and comprises a bottom plate, wherein a material injection mechanism is arranged on the bott