CN115417561A - Aquaculture tail water treatment system - Google Patents
Aquaculture tail water treatment system Download PDFInfo
- Publication number
- CN115417561A CN115417561A CN202211083233.3A CN202211083233A CN115417561A CN 115417561 A CN115417561 A CN 115417561A CN 202211083233 A CN202211083233 A CN 202211083233A CN 115417561 A CN115417561 A CN 115417561A
- Authority
- CN
- China
- Prior art keywords
- tank
- tail water
- floating island
- sedimentation tank
- aquaculture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000009360 aquaculture Methods 0.000 title claims abstract description 69
- 244000144974 aquaculture Species 0.000 title claims abstract description 69
- 238000004062 sedimentation Methods 0.000 claims abstract description 86
- 241001465754 Metazoa Species 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000010865 sewage Substances 0.000 claims description 41
- 241000251468 Actinopterygii Species 0.000 claims description 40
- 230000003647 oxidation Effects 0.000 claims description 22
- 238000007254 oxidation reaction Methods 0.000 claims description 22
- 230000009182 swimming Effects 0.000 claims description 18
- 238000004659 sterilization and disinfection Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000010813 municipal solid waste Substances 0.000 claims description 9
- 238000005276 aerator Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- 238000012258 culturing Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010802 sludge Substances 0.000 description 23
- 230000002349 favourable effect Effects 0.000 description 8
- 239000003403 water pollutant Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The application relates to the technical field of aquaculture tail water treatment, in particular to an aquaculture tail water treatment system which comprises a flume, a sedimentation tank, an artificial wetland, an artificial floating island and an outer pond. The launder is used for cultivating aquatic products; the sedimentation tank is communicated with the water flowing groove and is used for storing and filtering tail water generated in the water flowing groove; the artificial wetland is communicated with the sedimentation tank and is used for absorbing and purifying tail water which is precipitated and filtered in the sedimentation tank; the artificial floating island is arranged in the artificial wetland and used for providing a growth space for aquatic animals and plants, and can move in the artificial wetland; the outer pond is respectively communicated with the flume and the artificial wetland and is used for storing the tail water purified by the artificial wetland, and the tail water stored in the outer pond can flow back into the flume. This application has the effect that improves the purification degree of tail water.
Description
Technical Field
The application relates to the technical field of aquaculture tail water treatment, in particular to an aquaculture tail water treatment system.
Background
At present, in the aquaculture process, a large amount of toxic and harmful organic matters such as residual baits, excrement, biological corpses and the like and toxic and harmful inorganic matters such as ammonia nitrogen, hydrogen sulfide, nitrous acid and the like can be accumulated in a pond. Therefore, the culture water level can cause eutrophication of the water areas around the culture area, and is one of the main control objects of agricultural non-point source pollution. The culture tail water needs to be discharged periodically in the culture process of the pond so as to ensure the normal growth of the aquatic products. However, the direct discharge of the culture tail water into the outer river can bring negative effects on the environment of the natural water area.
Therefore, most aquaculture tail water is treated by the aquaculture tail water treatment system, and then the treated tail water meeting the aquaculture standard is discharged. The general aquaculture tail water treatment system mainly comprises a sedimentation tank, an aeration tank and an artificial wetland. Various aquatic plants are usually planted in the artificial wetland to remove water pollutants to the maximum extent and increase dissolved oxygen in the water.
For the related art among the above: different aquatic plants in the artificial wetland can absorb and purify different water pollutants, and the pollutants in the water at different positions in the artificial wetland are not completely the same at different periods, so that the water pollutants at different positions in the artificial wetland are absorbed and purified at different efficiencies and different degrees. Therefore, there is a problem that purification of tail water is incomplete.
Disclosure of Invention
In order to improve the purification degree of tail water, the application provides an aquaculture tail water treatment system.
The application provides an aquaculture tail water processing system adopts following technical scheme:
an aquaculture tail water treatment system comprising:
the launder is used for cultivating aquatic products;
the sedimentation tank is communicated with the water flowing groove and is used for storing and filtering tail water generated in the water flowing groove;
the artificial wetland is communicated with the sedimentation tank and is used for absorbing and purifying the tail water which is precipitated and filtered in the sedimentation tank;
the artificial floating island is arranged in the artificial wetland and used for providing a growth space for aquatic animals and plants, and the artificial floating island can move in the artificial wetland;
and the outer pond is respectively communicated with the flume and the artificial wetland, and is used for storing the tail water purified by the artificial wetland, and the tail water stored in the outer pond can flow back into the flume.
By adopting the technical scheme, the tail water generated in the flume is discharged into the artificial wetland after being treated by the sedimentation tank, is absorbed and purified by aquatic animals and plants in the artificial wetland, is discharged into the outer pond after being purified, and finally flows back into the flume from the outer pond, so that the aim of recycling the tail water is fulfilled. Aquatic animals and plants grow on the artificial floating island, so that the artificial floating island can drive the aquatic animals and plants on the artificial floating island to move in the artificial wetland, and water pollutants in the artificial wetland are purified conveniently by placing the artificial floating island at different positions in the artificial wetland, thereby being favorable for improving the purification degree of tail water.
Optionally, the tye with the intercommunication has the dirt absorbing tank between the sedimentation tank, the cell wall top in dirt absorbing tank slides and is provided with the support bridge, support the bridge with the junction in dirt absorbing tank is provided with and is used for the drive support bridge is in gliding drive arrangement on the cell wall in dirt absorbing tank, be provided with the soil pick-up pump on the support bridge, the soil pick-up pump be used for with tail water after the dirt absorbing tank bottom subsides is taken out in the sedimentation tank, the top in dirt absorbing tank with constructed wetland intercommunication, the sedimentation tank includes first sedimentation tank, second sedimentation tank, first sedimentation tank respectively with dirt absorbing tank with second sedimentation tank intercommunication, the second sedimentation tank with constructed wetland intercommunication.
Through adopting above-mentioned technical scheme, after the tail water in the tye got into the dirt suction groove, after the dirt suction groove is interior through deposiing, directly let in constructed wetland the comparatively limpid tail water at dirt suction groove top in to by the tail water extraction after the dirt suction pump sediments the dirt suction groove bottom in the first sedimentation tank, through secondary filter in first sedimentation tank, through tertiary filter in the second sedimentation tank, thereby be convenient for reduce the volume of the insoluble pollutant that the tail water of discharging into constructed wetland carried to the at utmost, and then be favorable to improving the transparency of water, water quality has been improved to a certain extent.
Optionally, a solid-liquid separator is arranged between the first sedimentation tank and the second sedimentation tank.
Through adopting above-mentioned technical scheme, solid-liquid separator can take out the mud that deposits in first sedimentation tank and the second sedimentation tank to carry out solid-liquid separation to the mud of taking out, the solid sludge who separates can regard as fertilizer, and liquid then flows back and enters in first sedimentation tank or the second sedimentation tank, thereby be convenient for handle the mud in first sedimentation tank and the second sedimentation tank, and then be favorable to reducing the sludge amount that deposits in first sedimentation tank and the second sedimentation tank.
Optionally, an adjusting tank is arranged between the first sedimentation tank and the second sedimentation tank, a biological oxidation tank is arranged between the adjusting tank and the second sedimentation tank, a filler is arranged in the biological oxidation tank, an aerator is arranged in the biological oxidation tank, and a disinfection tank is arranged between the second sedimentation tank and the artificial wetland.
By adopting the technical scheme, the regulating tank is used for regulating the fluctuation of the water quality and maintaining the relatively uniform and stable water quality of the inlet water; tail water is purified in the biological oxidation tank by adopting a biological contact oxidation method; the disinfection pond is used for disinfecting the tail water after the second sedimentation tank is handled to mutually supporting through equalizing basin, biological oxidation pond, disinfection pond three is favorable to making the tail water of draining into in the constructed wetland obtain abundant purification, and then is favorable to reducing the pollutant that carries in the tail water and surpasss constructed wetland's purification ability, leads to causing the possibility of destruction to the ecology in the constructed wetland.
Optionally, the artificial floating island includes the floating island main part, the top of floating island main part is provided with plants the layer, it has aquatic plant to plant on the layer, run through in the floating island main part and seted up the planting groove, plant the inslot and set up hourglass root net, the root of aquatic plant can pass it gets into to leak the root net in the constructed wetland.
Through adopting above-mentioned technical scheme, the root of the aquatic plant of planting on planting the layer can pass and leak in the root net gets into constructed wetland for aquatic plant can directly absorb nutrition and moisture from constructed wetland, thereby be convenient for utilize artificial chinampa to drive the aquatic plant to the different positions in the constructed wetland, make aquatic plant can absorb the water pollutant of different positions in the constructed wetland, and then be favorable to improving the purification degree of the tail water of discharging in the constructed wetland.
Optionally, an accommodating groove is formed in the floating island body and communicated with the planting groove, the accommodating groove penetrates through the side wall of the floating island body, a floating plate is connected in the accommodating groove in a sliding manner, and the floating plate can slide to the outside of the floating island body.
Through adopting above-mentioned technical scheme, when needs remove the chinampa main part, earlier with floating the board from holding the inslot roll-off to the chinampa main part outside, floating the board and contact with the water in the constructed wetland, be favorable to increasing the buoyancy that the chinampa main part receives to the mesh of being convenient for remove the chinampa main part has been reached.
Optionally, the bottom of the floating island main body is detachably connected with an aquaculture net cage, a net cage door is arranged on the side wall of the aquaculture net cage, and the aquaculture net cage can be used for culturing fish.
By adopting the technical scheme, the fish is cultured by utilizing the culture net cage, and the fish can play a certain purifying role on the water body in the artificial wetland, so that the water body purifying capacity of the floating island main body is further improved.
Optionally, the floating island main bodies are provided with a plurality of floating island main bodies, a plurality of connecting bridges are arranged between the floating island main bodies, a plurality of viewing boxes are further arranged between the floating island main bodies, the aquaculture net cage is communicated with fish swimming pipes, and one end, far away from the aquaculture net cage, of each fish swimming pipe is communicated with the viewing boxes.
Through adopting above-mentioned technical scheme, a plurality of chinampa main parts are mutually supported, can play better purification effect to the water in the constructed wetland in same position. Fishes in the culture net cage can enter the viewing box through the fish swimming pipes, so that visitors can view the fishes conveniently, the viewing value of the constructed wetland is favorably improved on the premise of not influencing the purification capacity of the constructed wetland, and the economic benefit of the constructed wetland is favorably improved.
Optionally, an on-off valve is arranged at one end of the fish swimming pipe close to the aquaculture net cage, a feeding pipe is communicated with the aquaculture net cage and connected with the floating island main body, and one end of the feeding pipe far away from the aquaculture net cage extends to the upper side of the floating island main body.
Through adopting above-mentioned technical scheme, when the water pollution of a certain position is comparatively serious in the constructed wetland, move the chinampa main part earlier to the serious position of pollution, open whole on-off valves again to throwing the intraductal bait that adds of material, bait falls into aquaculture net cage and can be concentrated with the fish attraction in other aquaculture net cages, close whole on-off valves at last, make fish be difficult for leaving from aquaculture net cage, thereby strengthen the purification efficiency in a certain region of chinampa main part to a certain extent. After the floating island main body purifies the water quality of the water body seriously polluted in the artificial wetland to a normal level, the on-off valve is opened, so that the fishes can swim back to other aquaculture net cages through the fish swimming pipe, and further, the long-time gathering of a large amount of fishes in a single volume can be favorably reduced, the oxygen content in the water body is too low, and the possibility of fish death is caused.
Optionally, the outer sides of the floating island main body and the aquaculture net cage are provided with grabbing hooks, and the grabbing hooks are used for grabbing garbage in the artificial wetland.
Through adopting above-mentioned technical scheme, snatch the hook and can snatch to the rubbish near the chinampa main part of floating in the artificial wetland to make the rubbish in the artificial wetland can gather in the side of chinampa main part, and then be convenient for clear up the rubbish in the artificial wetland.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the artificial floating island is arranged, so that aquatic animals and plants growing on the artificial floating island can move in the artificial wetland along with the artificial floating island, thereby being convenient for purifying water pollutants at different positions in the artificial wetland and further being beneficial to improving the purification degree of tail water;
2. through the mutual matching of the sewage suction tank, the sedimentation tank, the regulating tank, the biological oxidation tank and the disinfection tank, the tail water discharged from the water flowing tank is favorably and fully purified before entering the artificial wetland, and the possibility that pollutants carried in the tail water exceed the purification capacity of the artificial wetland, so that the ecological damage in the artificial wetland is caused is favorably reduced;
3. through the mutual matching of the ornamental box, the fish swimming pipe and the culture net cage, the ornamental value of the artificial wetland is favorably improved on the premise of ensuring the purifying capacity of the artificial wetland, thereby being favorable for improving the economic benefit of the artificial wetland.
Drawings
FIG. 1 is an overall flow diagram of an aquaculture tail water treatment system according to an embodiment of the present application.
Fig. 2 is a schematic diagram of the overall structure of the artificial floating island according to the embodiment of the present application.
Fig. 3 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A in fig. 2.
Fig. 4 is a schematic structural diagram of the floating island module in the embodiment of the present application.
Description of reference numerals:
1. a launder; 11. pushing a water pump; 2. a sedimentation tank; 21. a first sedimentation tank; 22. a second sedimentation tank; 221. a sludge return line; 23. a solid-liquid separator; 231. a sludge concentration tank; 232. a plate-and-frame filter press; 3. artificial wetland; 4. artificial floating islands; 41. a floating island body; 411. planting a layer; 412. planting a groove; 4121. a root leaking net; 413. accommodating grooves; 414. a floating plate; 4141. a handle; 415. a connecting bridge; 416. a viewing box; 417. grabbing a hook; 418. inserting grooves; 419. a fastening rod; 42. a culture net cage; 421. a net cage door; 422. a fish swimming pipe; 423. an on-off valve; 424. a feeding pipe; 425. a plugboard; 5. an outer pond; 6. a sewage suction tank; 61. a support bridge; 62. a drive device; 63. a sewage suction pump; 631. a sewage suction pipe 632 and a sewage discharge pipe; 7. a regulating tank; 8. a biological oxidation pond; 81. a filler; 82. an aerator; 9. and (4) a disinfection tank.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses aquaculture tail water treatment system.
Referring to fig. 1, the aquaculture tail water treatment system comprises a flume 1, a sedimentation tank 2, an artificial wetland 3, an artificial floating island 4 and an outer pond 5. The flume 1, the sedimentation tank 2, the artificial wetland 3 and the outer pond 5 are sequentially communicated, and the outer pond 5 is communicated with the flume 1, so that tail water generated in the flume 1 can be purified, and the purified tail water can be recycled. The artificial floating island 4 is movably arranged in the artificial wetland 3, and a space for the growth of the aquatic animals and plants is arranged on the artificial floating island 4. The outer pond 5 is used for storing the tail water purified by the artificial wetland 3.
Referring to fig. 1, a plurality of water pushing pumps 11 are arranged on one side of the water flowing channel 1 communicated with the outer pond 5, and the plurality of water pushing pumps 11 are uniformly distributed on the same side of the water flowing channel 1. The water pushing pump 11 can pump the purified water in the outer pond 5 into the launder 1, so that the water in the launder 1 flows to the side far away from the water pushing pump 11, and the water drives pollutants to move.
Referring to fig. 1, a sewage suction tank 6 is communicated between the launder 1 and the sedimentation tank 2, a support bridge 61 is slidably mounted at the top end of the tank wall of the sewage suction tank 6, the support bridge 61 is in a long strip shape, and two ends of the support bridge 61 are respectively connected to the top end of the tank wall of the sewage suction tank 6. A driving device 62 is installed between the supporting bridge 61 and the top end of the tank wall of the sewage suction tank 6, the driving device 62 can adopt a gear-rack driving mode, and the driving device 62 is mainly used for driving the supporting bridge 61 to slide along the length direction of the top end of the tank wall of the sewage suction tank 6.
Referring to fig. 1, the sewage suction pump 63 is installed to one side that the support bridge 61 deviates from sewage suction groove 6, is connected with sewage suction pipe 631, blow off pipe 632 on the sewage suction pump 63, and the bottom in sewage suction groove 6 is stretched into to the one end that sewage suction pump 63 was kept away from to sewage suction pipe 631, and the one end that sewage suction pump 63 was kept away from to blow off pipe 632 stretches into in the sedimentation tank 2. The support bridge 61 is fitted to the sewage suction pump 63 so as to adjust the position of the sewage suction pump 63, thereby facilitating the complete extraction of the sludge at the bottom of the sewage suction tank 6.
Referring to fig. 1, when the water in the gutter channel 1 flows into the sewage suction tank 6 under the action of the water pushing pump 11, the water is firstly precipitated in the sewage suction tank 6, and then the sewage suction pump 63 is started, the sewage suction pump 63 pumps out the sludge precipitated at the bottom of the sewage suction tank 6 through the sewage suction pipe 631, and the pumped sludge is discharged into the sedimentation tank 2 through the sewage discharge pipe 632, so that the tail water containing higher sludge concentration is discharged into the sedimentation tank 2. Meanwhile, the top end of the sewage suction groove 6 is communicated with the artificial wetland 3, so that the settled clear tail water can be directly introduced into the artificial wetland 3, and the artificial wetland 3 is used for purification, thereby improving the purification efficiency of the tail water.
Referring to fig. 1, the settling tank 2 includes a first settling tank 21 and a second settling tank 22. The drain pipe 632 extends into the first sedimentation tank 21 and is positioned at the top end of the first sedimentation tank 21. Be provided with equalizing basin 7 between first sedimentation tank 21 and the second sedimentation tank 22, equalizing basin 7 and first sedimentation tank 21 intercommunication, equalizing basin 7 is used for collecting the tail water that flows in, maintains the relative even and stable of the quality of water of the tail water of collecting.
Referring to fig. 1, a biological oxidation pond 8 is arranged between the regulating pond 7 and the second sedimentation pond 22, and the biological oxidation pond 8 is respectively communicated with the regulating pond 7 and the second sedimentation pond 22. The biological oxidation pond 8 is internally provided with a filler 81, the filler 81 is used for the attachment and growth of microorganisms, and the microorganisms can play a role in purifying the water body in the biological oxidation pond 8. The biological oxidation pond 8 is also provided with an aerator 82, and the aerator 82 is used for providing oxygen for microorganisms in the biological oxidation pond 8 and stirring and mixing water in the biological oxidation pond 8.
Referring to fig. 1, a sludge return line 221 is further communicated between the second sedimentation tank 22 and the biological oxidation tank 8, and the sludge return line 221 is used for returning sludge in the second sedimentation tank 22 to the biological oxidation tank 8.
Referring to fig. 1, a solid-liquid separator 23 is further connected between the first sedimentation tank 21 and the second sedimentation tank 22, the solid-liquid separator 23 may be set in various forms, and the solid-liquid separator 23 in this embodiment includes a sludge concentration tank 231 and a plate-and-frame filter press 232. The sludge concentration tank 231 is respectively communicated with the sedimentation tank 2 and the plate-and-frame filter press 232, and the sludge concentration tank 231 is used for concentrating the sludge in the sedimentation tank 2 and conveying the concentrated sludge into the plate-and-frame filter press 232. The plate-and-frame filter press 232 is used for performing solid-liquid separation on the sludge conveyed by the sludge concentration tank 231, and the plate-and-frame filter press 232 is communicated with the regulating tank 7. Therefore, the solid sludge separated by the plate and frame filter press 232 can be used as a composting material, and the liquid sludge separated by the plate and frame filter press 232 can flow back to the regulating tank 7.
Referring to fig. 1, one end of the second sedimentation tank 22 is communicated with a disinfection tank 9, tail water after sedimentation in the second sedimentation tank 22 can flow into the disinfection tank 9, and disinfectant can be added into the disinfection tank 9 to complete the disinfection of the tail water. One end of the disinfection tank 9 far away from the second sedimentation tank 22 is communicated with the artificial wetland 3, and tail water after disinfection in the disinfection tank 9 can be discharged into the artificial wetland 3.
Referring to fig. 2 and 3, the artificial floating island 4 includes a floating island body 41, a planting layer 411 is provided on the top of the floating island body 41, and aquatic plants are planted on the planting layer 411. And a planting groove 412 is formed in the artificial floating island 4 in a penetrating mode, the planting groove 412 is located in the middle of the artificial floating island 4, and a root leaking net 4121 is fixedly connected into the planting groove 412. The planting layer 411 is arranged on the root leaking net 4121, so that roots of the aquatic plants can penetrate through the root leaking net 4121 and stretch into the artificial wetland 3 (refer to fig. 1), the aquatic plants can absorb nutrition and water from the artificial wetland 3 (refer to fig. 1) conveniently, and the purpose of purifying the water body in the artificial wetland 3 (refer to fig. 1) by the aquatic plants is further achieved.
Referring to fig. 3, an accommodating groove 413 is further formed in the floating island body 41, the accommodating groove 413 penetrates through the side wall of the floating island body 41, the accommodating groove 413 is communicated with the planting groove 412, a floating plate 414 is slidably inserted in the accommodating groove 413, and the floating plate 414 can slide out of the accommodating groove 413 and slide to the outer side of the floating island body 41. The floating plate 414 can provide additional buoyancy to the floating island body 41, facilitating movement of the floating island body 41. The holding groove 413 may be formed in a plurality of numbers, two holding grooves 413 are formed in this embodiment, the number of the floating plates 414 is the same as that of the holding grooves 413, and the two floating plates 414 can provide larger buoyancy to the floating island body 41.
Referring to fig. 3, a handle 4141 is fixedly connected to an end of the floating plate 414 far from the planting groove 412, and the handle 4141 is provided to facilitate the floating plate 414 to be drawn out from the accommodating groove 413.
Referring to fig. 3, a culture net cage 42 is detachably connected to the bottom of the floating island body 41, and fish can be cultured in the culture net cage 42. The bottom of the floating island body 41 is provided with a plug-in groove 418, the top end of the aquaculture net cage 42 is provided with a plug-in plate 425, and the plug-in plate 425 can be inserted into the plug-in groove 418. Fastening rods 419 are connected to the side walls of the floating island body 41 through threads, and the fastening rods 419 penetrate through the side walls of the floating island body 41 and the insertion plates 425 respectively.
Referring to fig. 4, a net door 421 is rotatably connected to a side wall of the aquaculture net cage 42. The arrangement of the net cage door 421 is beneficial to replacing the fishes in the aquaculture net cage 42 on the premise that the floating island main body 41 is not separated from the aquaculture net cage 42, thereby reducing the possibility that the dead fishes in the aquaculture net cage 42 cannot be taken out, and the fishes in the aquaculture net cage 42 are rotted and polluted.
Referring to fig. 1 and 3, a grabbing hook 417 is fixedly connected to the outer side walls of the floating island body 41 and the aquaculture net cage 42, and the grabbing hook 417 is located below the accommodating groove 413. The plurality of grappling hooks 417 are provided, and the plurality of grappling hooks 417 are provided around the outer side wall of the floating island body 41. When the garbage in the artificial wetland 3 floats to the side of the floating island body 41, the grabbing hooks 417 can grab the garbage and gather the garbage in the artificial wetland 3 at the side of the floating island body 41, so that the garbage in the artificial wetland 3 can be conveniently cleaned.
Referring to fig. 1 and 4, the floating island bodies 41 are provided with a plurality of, in this embodiment three, connecting bridges 415 are detachably connected between the three floating island bodies 41, and the three floating island bodies 41 are sequentially connected end to end through the connecting bridges 415. Three floating island bodies 41 are used as a floating island module, the floating island modules are arranged in a plurality of numbers, and the floating island modules are distributed in the artificial wetland 3, so that the purification of the water in the artificial wetland 3 is facilitated.
Referring to fig. 4, the side wall of the aquaculture net cage 42 is fixedly connected with a fish swimming pipe 422, and an ornamental box 416 is arranged between the three floating island bodies 41. The viewing box 416 is positioned in the middle of the three floating island bodies 41, and one end of the fish swimming pipe 422 far away from the culture net cage 42 is fixedly connected with the viewing box 416. The three floating island main bodies are respectively and fixedly connected with the ornamental box 416 through fish swimming pipes 422, so that the fishes in the culture net cage 42 can enter the ornamental box 416 through the fish swimming pipes 422.
Referring to fig. 1 and 4, the viewing box 416 may be made of a transparent material, which is convenient for visitors to view fish in the viewing box 416, so that the viewing value of the artificial wetland 3 is improved to a certain extent on the premise of not affecting the purification capacity of the artificial wetland 3, and the economic benefit of the artificial wetland 3 is further improved.
Referring to fig. 4, the swimming tube 422 may also be made of a transparent material. One end of the fish swimming pipe 422 close to the aquaculture net cage 42 is provided with an on-off valve 423, and the on-off valve 423 can open or close the fish swimming pipe 422. The feeding pipe 424 is connected to the top end of the aquaculture net cage 42, the feeding pipe 424 penetrates through the center of the floating island main body 41, and one end, away from the aquaculture net cage 42, of the feeding pipe 424 extends to the upper portion of the floating island main body 41, so that bait can be conveniently thrown into the aquaculture net cage 42 through the feeding pipe 424.
Referring to fig. 1 and 4, when the water pollution at a certain position in the constructed wetland 3 is severe, the floating island body 41 is moved to the location where the pollution is severe, and one floating island body 41 of the three floating island bodies 41 is moved to the location where the pollution is the most severe. Then all on-off valves 423 between the three floating island bodies 41 are opened, and baits are thrown into the aquaculture net cage 42 through the feeding pipes 424 on the floating island bodies 41 in the most polluted area. After the baits fall into the aquaculture net cages 42, the fishes in the other two aquaculture net cages 42 can be attracted and concentrated into the aquaculture net cages 42 with the baits, and then the on-off valves 423 outside the aquaculture net cages 42 with the baits are closed, so that the concentrated fishes are not easy to leave from the aquaculture net cages 42. Thereby contributing to enhancement of the purification ability of the floating island body 41 located in the most polluted region and facilitating rapid purification of the most polluted region.
Referring to fig. 1 and 4, after the floating island body 41 purifies the water quality of the water body in the most polluted area to a normal level, the on-off valve 423 is opened to enable the fishes to swim back to the aquaculture net cages 42 on other floating island bodies 41 through the fish swimming pipes 422, so that the number of the fishes in a unit volume is reduced, the possibility that the number of the fishes in the unit volume is too large, the oxygen content in the water body is insufficient, and the death probability of the fishes is increased is reduced to a certain extent.
The implementation principle of an aquaculture tail water treatment system in the embodiment of the application is as follows: when the tail water in the launder 1 needs to be recycled, the tail water needs to be purified first. First, the water pump 11 is started to pump the water in the outer pond 5 into the water flowing channel 1, so that the tail water in the water flowing channel 1 flows into the sewage suction tank 6. And pumping tail water in the sewage suction groove 6 into the first sedimentation tank 21 by using a sewage suction pump 63, and introducing the tail water into the regulating tank 7 after the tail water is precipitated and filtered in the first sedimentation tank 21.
Then, the tail water in the regulating tank 7 is introduced into the biological oxidation tank 8, after the microbial treatment in the biological oxidation tank 8, the tail water is introduced into the second sedimentation tank 22, and after the tail water is precipitated and filtered in the second sedimentation tank 22, the tail water is introduced into the disinfection tank 9. Meanwhile, the sludge precipitated in the first sedimentation tank 21 and the second sedimentation tank 22 is drawn out by the solid-liquid separator 23 and separated into solid sludge and liquid sludge by the solid-liquid separator 23.
Finally, the tail water in the second sedimentation tank 22 is guided into the disinfection tank 9, disinfected in the disinfection tank 9 and then guided into the artificial wetland 3. The tail water is purified in the artificial wetland 3, then is guided into the outer pond 5, and flows back into the influent flume 1 from the outer pond 5, thereby realizing the purpose of recycling the tail water.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An aquaculture tail water treatment system comprising:
the flume (1) is used for cultivating aquatic products;
the sedimentation tank (2) is communicated with the water flowing tank (1), and the sedimentation tank (2) is used for storing and filtering tail water generated in the water flowing tank (1);
the artificial wetland (3) is communicated with the sedimentation tank (2), and the artificial wetland (3) is used for absorbing and purifying the tail water after sedimentation and filtration in the sedimentation tank (2);
the artificial floating island (4) is arranged in the artificial wetland (3) and is used for providing a growth space for aquatic animals and plants, and the artificial floating island (4) can move in the artificial wetland (3);
the outer pond (5) is respectively communicated with the launder (1) and the artificial wetland (3), the outer pond (5) is used for storing tail water purified by the artificial wetland (3), and the tail water stored in the outer pond (5) can flow back into the launder (1).
2. The aquaculture tail water treatment system according to claim 1, characterized in that a sewage suction tank (6) is communicated between the running water tank (1) and the sedimentation tank (2), a support bridge (61) is slidably arranged at the top end of the tank wall of the sewage suction tank (6), a driving device (62) for driving the support bridge (61) to slide on the tank wall of the sewage suction tank (6) is arranged at the joint of the support bridge (61) and the sewage suction tank (6), a sewage suction pump (63) is arranged on the support bridge (61), the sewage suction pump (63) is used for pumping the tail water settled at the bottom of the sewage suction tank (6) into the sedimentation tank (2), the top end of the sewage suction tank (6) is communicated with the artificial wetland (3), the sedimentation tank (2) comprises a first sedimentation tank (21) and a second sedimentation tank (22), the first sedimentation tank (21) is communicated with the sewage suction tank (6) and the second sedimentation tank (22), and the second sedimentation tank (22) is communicated with the artificial wetland (3).
3. An aquaculture tail water treatment system according to claim 2, characterized in that a solid-liquid separator (23) is arranged between the first settling tank (21) and the second settling tank (22).
4. The aquaculture tail water treatment system according to claim 2, characterized in that a regulating reservoir (7) is arranged between the first sedimentation tank (21) and the second sedimentation tank (22), a biological oxidation tank (8) is arranged between the regulating reservoir (7) and the second sedimentation tank (22), a filler (81) is arranged in the biological oxidation tank (8), an aerator (82) is arranged in the biological oxidation tank (8), and a disinfection tank (9) is arranged between the second sedimentation tank (22) and the artificial wetland (3).
5. The aquaculture tail water treatment system according to claim 1, wherein the artificial floating island (4) comprises a floating island body (41), a planting layer (411) is arranged on the top of the floating island body (41), aquatic plants are planted on the planting layer (411), a planting groove (412) is formed in the floating island body (41) in a penetrating mode, a root leaking net (4121) is arranged in the planting groove (412), and roots of the aquatic plants can penetrate through the root leaking net (4121) and enter the artificial wetland (3).
6. The aquaculture tail water treatment system according to claim 5, wherein a holding groove (413) is formed in the floating island main body (41), the holding groove (413) is communicated with the planting groove (412), the holding groove (413) penetrates through the side wall of the floating island main body (41), a floating plate (414) is slidably connected in the holding groove (413), and the floating plate (414) can slide out of the floating island main body (41).
7. The aquaculture tail water treatment system according to claim 5, wherein an aquaculture net cage (42) is detachably connected to the bottom of the floating island main body (41), a net cage door (421) is arranged on the side wall of the aquaculture net cage (42), and the aquaculture net cage (42) can be used for culturing fish.
8. The aquaculture tail water treatment system according to claim 7, wherein a plurality of the floating island bodies (41) are arranged, connecting bridges (415) are arranged among the plurality of the floating island bodies (41), an ornamental box (416) is further arranged among the plurality of the floating island bodies (41), fish swimming pipes (422) are communicated with the aquaculture net cage (42), and one ends of the fish swimming pipes (422) far away from the aquaculture net cage (42) are communicated with the ornamental box (416).
9. The aquaculture tail water treatment system according to claim 8, wherein one end of the fish swimming pipe (422) close to the aquaculture net cage (42) is provided with a break-make valve (423), a feeding pipe (424) is communicated with the aquaculture net cage (42), the feeding pipe (424) is connected with the floating island main body (41), and one end of the feeding pipe (424) far away from the aquaculture net cage (42) extends to the upper part of the floating island main body (41).
10. The aquaculture tail water treatment system according to claim 7, wherein the outer sides of the floating island body (41) and the aquaculture net cage (42) are respectively provided with a grabbing hook (417), and the grabbing hooks (417) are used for grabbing garbage in the artificial wetland (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211083233.3A CN115417561A (en) | 2022-09-06 | 2022-09-06 | Aquaculture tail water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211083233.3A CN115417561A (en) | 2022-09-06 | 2022-09-06 | Aquaculture tail water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115417561A true CN115417561A (en) | 2022-12-02 |
Family
ID=84201620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211083233.3A Pending CN115417561A (en) | 2022-09-06 | 2022-09-06 | Aquaculture tail water treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115417561A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514052A (en) * | 2009-03-24 | 2009-08-26 | 中水珠江规划勘测设计有限公司 | Biological floating island and construction method thereof |
| CN101828538A (en) * | 2010-05-31 | 2010-09-15 | 中国水产科学研究院渔业机械仪器研究所 | Box-type biological floating bed and use method thereof |
| KR20110136222A (en) * | 2010-06-14 | 2011-12-21 | 삼성물산 주식회사 | Ecological sewage water treatment system |
| CN103395887A (en) * | 2013-08-19 | 2013-11-20 | 深圳市铁汉生态环境股份有限公司 | Flexible compound multifunctional network partition floating island |
| CN104108797A (en) * | 2014-07-31 | 2014-10-22 | 宜都市茂源生态农业有限公司 | Water body purification system formed by stereoscopic configuration of aquatic animals and plants and purification method thereof |
| CN104828948A (en) * | 2015-04-21 | 2015-08-12 | 中国科学院南京地理与湖泊研究所 | Water purification floating bed breeding device and water purification method |
| CN204848595U (en) * | 2015-07-30 | 2015-12-09 | 杜丹 | Effluent disposal system breeds |
| CN106082444A (en) * | 2016-08-04 | 2016-11-09 | 苏州筑园景观规划设计股份有限公司 | A kind of waterborne supporting plants chinampa and manufacture method thereof |
| CN108675552A (en) * | 2018-05-21 | 2018-10-19 | 湖南骁睿农业生态科技有限公司 | A kind of sink concentrates the scrap concrete and tail water administering method of cultured fishes |
| CN109197690A (en) * | 2018-10-23 | 2019-01-15 | 海南省海洋与渔业科学院（海南省海洋开发规划设计研究院） | A kind of torrid areas industrial circulating water seawater fish and salt tolerance vegetables support system altogether |
| CN209768626U (en) * | 2019-01-22 | 2019-12-13 | 刘建 | Roundabout fish bowl |
| CN111567455A (en) * | 2020-05-30 | 2020-08-25 | 申雪丽 | Floating island for mariculture |
| CN112106720A (en) * | 2020-10-19 | 2020-12-22 | 四川省农业科学院水产研究所(四川省水产研究所) | Intelligent ecological circulating water culture pond, control method and application |
| CN212770335U (en) * | 2020-06-19 | 2021-03-23 | 上海江柘环境工程技术有限公司 | Ecological management system of tail water breeds |
| CN113493285A (en) * | 2020-04-08 | 2021-10-12 | 浙江嘉科新能源科技有限公司 | Outdoor freshwater fish culture tail water treatment system |
| CN216191744U (en) * | 2021-09-24 | 2022-04-05 | 湖南三昌科技有限公司 | Green low carbon aquaculture tail water processing system of agricultural non-point source pollution |
| CN114835350A (en) * | 2022-06-06 | 2022-08-02 | 河北省海洋与水产科学研究院(河北省海洋渔业生态环境监测站) | Breed tail water repair system |
-
2022
- 2022-09-06 CN CN202211083233.3A patent/CN115417561A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514052A (en) * | 2009-03-24 | 2009-08-26 | 中水珠江规划勘测设计有限公司 | Biological floating island and construction method thereof |
| CN101828538A (en) * | 2010-05-31 | 2010-09-15 | 中国水产科学研究院渔业机械仪器研究所 | Box-type biological floating bed and use method thereof |
| KR20110136222A (en) * | 2010-06-14 | 2011-12-21 | 삼성물산 주식회사 | Ecological sewage water treatment system |
| CN103395887A (en) * | 2013-08-19 | 2013-11-20 | 深圳市铁汉生态环境股份有限公司 | Flexible compound multifunctional network partition floating island |
| CN104108797A (en) * | 2014-07-31 | 2014-10-22 | 宜都市茂源生态农业有限公司 | Water body purification system formed by stereoscopic configuration of aquatic animals and plants and purification method thereof |
| CN104828948A (en) * | 2015-04-21 | 2015-08-12 | 中国科学院南京地理与湖泊研究所 | Water purification floating bed breeding device and water purification method |
| CN204848595U (en) * | 2015-07-30 | 2015-12-09 | 杜丹 | Effluent disposal system breeds |
| CN106082444A (en) * | 2016-08-04 | 2016-11-09 | 苏州筑园景观规划设计股份有限公司 | A kind of waterborne supporting plants chinampa and manufacture method thereof |
| CN108675552A (en) * | 2018-05-21 | 2018-10-19 | 湖南骁睿农业生态科技有限公司 | A kind of sink concentrates the scrap concrete and tail water administering method of cultured fishes |
| CN109197690A (en) * | 2018-10-23 | 2019-01-15 | 海南省海洋与渔业科学院（海南省海洋开发规划设计研究院） | A kind of torrid areas industrial circulating water seawater fish and salt tolerance vegetables support system altogether |
| CN209768626U (en) * | 2019-01-22 | 2019-12-13 | 刘建 | Roundabout fish bowl |
| CN113493285A (en) * | 2020-04-08 | 2021-10-12 | 浙江嘉科新能源科技有限公司 | Outdoor freshwater fish culture tail water treatment system |
| CN111567455A (en) * | 2020-05-30 | 2020-08-25 | 申雪丽 | Floating island for mariculture |
| CN212770335U (en) * | 2020-06-19 | 2021-03-23 | 上海江柘环境工程技术有限公司 | Ecological management system of tail water breeds |
| CN112106720A (en) * | 2020-10-19 | 2020-12-22 | 四川省农业科学院水产研究所(四川省水产研究所) | Intelligent ecological circulating water culture pond, control method and application |
| CN216191744U (en) * | 2021-09-24 | 2022-04-05 | 湖南三昌科技有限公司 | Green low carbon aquaculture tail water processing system of agricultural non-point source pollution |
| CN114835350A (en) * | 2022-06-06 | 2022-08-02 | 河北省海洋与水产科学研究院(河北省海洋渔业生态环境监测站) | Breed tail water repair system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102067824B (en) | Closed circulating seawater prawn pond culture system | |
| CN1806537A (en) | Ecological energy-saving level dual-cycle water treatment system for industrialized fish culture | |
| CN108238703A (en) | A kind of system that aquiculture using recirculated water is carried out using biofilter-artificial swamp | |
| CN110950436A (en) | Seawater pond culture tail water treatment system and method | |
| CN212770335U (en) | Ecological management system of tail water breeds | |
| CN113213710A (en) | Seawater factory greenhouse aquaculture penaeus vannamei tail water treatment system and method | |
| CN110028203A (en) | A kind of aquaculture water-break bypass is administered and restoration of the ecosystem circulation process method | |
| CN111204934A (en) | Breeding tail water treatment system | |
| CN110104904A (en) | A kind of ecological wetland system for polluted water purification and reparation | |
| CN105645698B (en) | High concentrated organic wastewater water cleaning systems and technological process | |
| CN113336332B (en) | Water eutrophication control system and control method based on remote control | |
| CN112931370A (en) | Pond culture tail water treatment system | |
| CN114600825B (en) | Dual cycle aquaculture system | |
| CN111134078A (en) | Circulating partitioned layered purification aquaculture pond and construction method thereof | |
| CN215855653U (en) | Sewage purification integrated device for coupling biological treatment and ecological treatment | |
| CN214758650U (en) | High-density aquatic ecological breeding system | |
| CN115417561A (en) | Aquaculture tail water treatment system | |
| CN114938791A (en) | Wisdom pond circulation farming systems | |
| CN110946108B (en) | Pond system for water quality circulation purification | |
| CN107540160A (en) | Cultivation wastewater purification handling process and its device | |
| CN210825827U (en) | Breeding sewage purification equipment based on membrane separation technology | |
| CN113371951A (en) | Pond culture water body in-situ ecological purification system based on aquatic plant and microorganism coupling mode | |
| CN113698032A (en) | Sewage purification integrated device and method for coupling biological treatment and ecological treatment | |
| CN113349137A (en) | Container aquaculture system based on internet | |
| CN217323778U (en) | Internal circulation system for tail water of hybrid snakehead fish culture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |