Intensive treatment system for tail water of aquaculture pond

Abstract

The application discloses a breeding pond tail water intelligent intensive treatment system, which comprises a comprehensive sedimentation tank used for receiving breeding tail water discharged from a fish pond for first-time sedimentation treatment, and is provided with a first sludge discharge pipe communicated with a shore base at the bottom; second-time tail water enters an intensive biochemical purification tank used for receiving upper clear water after first-time sedimentation treatment of the comprehensive sedimentation tank. The application provides a breeding pond tail water intelligent intensive treatment system, after first-time sedimentation and filtration treatment of the comprehensive sedimentation tank, the tail water enters the intensive biochemical purification tank for further treatment, so that organic pollutants, phosphorus, nitrogen and heavy metals in the sewage can be effectively removed, and the treated water after second-time sedimentation of the tail water in a clarifier can be used for farmland irrigation and breeding fish pond recycling. The system strengthens purification of organic pollutants and nitrogen removal of the fish pond tail water, improves fish pond tail water purification efficiency, and reduces occupation of the fish pond area.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aquaculture technology and tail water treatment technology, and particularly relates to a breeding pond tail water intelligent intensive treatment system. BACKGROUND

[0002] At present, water resources are greatly consumed by the way of large drainage in aquaculture, and the pollutants formed by the residual feed and the excretion of fish, shrimp and crab in the process of aquaculture pollute the water body and the bottom mud of the pond, which makes the breeding water body increasingly eutrophication, and causes more and more harm to the surrounding water environment and ecological environment. SUMMARY

[0003] In order to solve the above problems, the technical scheme provides a breeding pond tail water intelligent intensive treatment system.

[0004] In order to achieve the above purpose, the technical scheme is as follows:

[0005] A breeding pond tail water intelligent intensive treatment system comprises

[0006] A comprehensive sedimentation tank is used for receiving breeding tail water discharged from a fish pond for first sedimentation treatment, and a first sludge discharge pipe is arranged at the bottom of the comprehensive sedimentation tank and connected to a shore base;

[0007] An intensive biochemical purification tank is used for receiving the upper clear water after the first sedimentation treatment of the comprehensive sedimentation tank, and the intensive biochemical purification tank comprises a combined filler area arranged in the middle, flow guide pipes arranged on both sides of the combined filler area, MBBR biofilm fillers, and a filter screen arranged corresponding to a water outlet;

[0008] A clarifier is used for receiving the treated water discharged from the intensive biochemical purification tank for second sedimentation treatment, and a second sludge discharge pipe is arranged at the bottom of the clarifier and connected to the front end of the intensive biochemical purification tank;

[0009] An aeration system is used for aeration treatment of the intensive biochemical purification tank.

[0010] The breeding pond tail water intelligent intensive treatment system as described above further comprises a total nitrogen monitor and a liquid level monitoring device arranged in the comprehensive sedimentation tank, a collection monitoring device arranged in the clarifier, and a data acquisition instrument electrically connected to the collection monitoring device.

[0011] The breeding pond tail water intelligent intensive treatment system as described above is provided with an ecological floating bed for planting aquatic plants on the comprehensive sedimentation tank, and the harvesting cycle of the aquatic plants is 2-3 months.

[0012] The second sludge discharge pipe is also connected to the shore base to discharge the excess sludge to the shore base as fertilizer.

[0013] The area of the aquaculture pond tail water intelligent intensive treatment system is 2-3% of the area of the fish pond, and the area of the comprehensive sedimentation tank is 1-1.5% of the area of the fish pond.

[0014] The sludge discharge period of the comprehensive sedimentation tank is 20-30 days, and the sludge discharge time is 20-30 minutes each time.

[0015] The combined filler area is provided with double-circle large plastic rings and connecting ropes for connecting a plurality of double-circle large plastic rings, wherein the outer circle of the double-circle large plastic ring is uniformly distributed with fiber bundles formed by aldehyde fibers or polyester filaments, and the inner circle and the outer circle are provided with plastic branches in a spider web shape.

[0016] The aeration system includes a blowing device, a main air pipe, and an aeration assembly connected to the main air pipe symmetrically; the aeration assembly includes a first aeration branch pipe and a second aeration branch pipe connected to each other, and the second aeration branch pipe is symmetrically connected with an aeration disc; the second aeration branch pipe and the aeration disc are respectively arranged at the bottom of the intensive biochemical purification tank.

[0017] The aquaculture pond tail water intelligent intensive treatment system further comprises a dredging device for cleaning the first sludge discharge pipe or the second sludge discharge pipe, and the double-circle large plastic ring is additionally installed on the dredging device.

[0018] The dredging device comprises a groove arranged on the inner side wall of the second sludge discharge pipe and extending along the length direction of the second sludge discharge pipe, a cable embedded in the groove, and a film covering the groove, the cable is respectively drawn out of the second sludge discharge pipe at both ends, the cable is provided with a round baffle at the end, and the round baffle comprises a main body part for the cable to pass through the center of the round baffle, and a limiting part corresponding to the groove, the double-circle large plastic ring, the round baffle and the positioning buckle are sequentially arranged along the pulling direction of the cable.

[0019] The application has the following beneficial effects:

[0020] The application provides a breeding pond tail water intelligent intensive treatment system, which is treated by first-time deposition and filtration in a comprehensive deposition tank, and then is further treated in an intensive biochemical purification tank, so that organic pollutants, phosphorus, nitrogen and heavy metals in the tail water can be effectively removed, and the treated water after second-time deposition in a clarifier can be used for farmland irrigation and breeding pond recycling.

[0021] In order to make the technical problems solved in the embodiments of the application, the technical solutions and beneficial effects clearer, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0022] Figure 1 is a structural layout diagram of the application;

[0023] Figure 2 is a structural schematic diagram of a double-circle large plastic ring;

[0024] Figure 3 is a structural schematic diagram of an aeration system;

[0025] Figure 4 is a cross-sectional view before use of a dredging device;

[0026] Figure 5 is a cross-sectional view during use of the dredging device. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved in the embodiments of the application, the technical solutions and beneficial effects clearer, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0028] An intelligent intensive treatment system for breeding pond tail water, comprising

[0029] A comprehensive deposition tank 1 is used for receiving breeding tail water discharged from a fish pond for first-time deposition treatment, and a first sludge discharge pipe 11 is arranged at the bottom of the tank and is communicated with a shore base;

[0030] Intensive biochemical purification tank 2, for receiving the upper clear water after the first sedimentation treatment of the comprehensive sedimentation tank 1, the intensive biochemical purification tank 2 includes a combined filler area 21 arranged in the middle, a flow guide pipe 22 arranged on both sides of the combined filler area 21, MBBR biofilm filler 23, and a filter screen 24 corresponding to the water outlet; the MBBR biofilm filler contains biological affinity components and antioxidant components, has high biological activity and antioxidant property, improves the adhesion ability of microorganisms and the durability of the filler, effectively improves the rapid biofilm formation capacity and service life of the filler. It promotes the catalytic effect of biological enzymes, the nitrification of nitrifying bacteria by adding enhancing components of biological enzymes (especially the formula of enzyme promoting components for nitrifying bacteria) and water feeding, improves the hydrophilic property of the filler and the nitrification capacity of nitrifying bacteria, so that microorganisms are easily adsorbed on the filler, and the decomposition capacity of microorganisms to pollutants in the fishpond effluent and the ammonia nitrogen removal capacity are significantly improved.

[0031] The clarification tank 3 is used for receiving the treated water discharged from the intensive biochemical purification tank 2 for second sedimentation treatment, and the bottom is provided with a second sludge discharge pipe 31 communicating with the front end of the intensive biochemical purification tank 2.

[0032] The aeration system 4 is used for aeration treatment of the intensive biochemical purification tank 2.

[0033] The present application provides a breeding pond effluent intelligent intensive treatment system, after the first sedimentation treatment of the comprehensive sedimentation tank, the intensive biochemical purification tank can effectively remove organic matter, phosphorus, nitrogen and heavy metals in sewage, and the treated water after the second sedimentation treatment in the clarification tank can be used for farmland irrigation and breeding fishpond recycling. The combined filler and MBBR filler can not only strengthen the fishpond effluent environment, but also reduce the fishpond area. The combined filler, MBBR filler, aeration system, microorganisms and the like in the biochemical purification area can effectively treat the breeding fishpond effluent discharge problem, reduce the land occupation area of the traditional three-tank two-dam ecological purification (reduce 1 / 3-1 / 2), adsorb, transfer, degrade and filter the fishpond effluent, and then discharge the purified fishpond effluent into the river or cycle to the fishpond; greatly improve the breeding efficiency of the fishpond, and the water quality environment is more optimized for the fish growth environment, and the yield per mu is greatly improved.

[0034] Further, as a preferred embodiment of the present application but not limited, it further includes a total nitrogen monitor 5 and a liquid level monitoring device 6 arranged in the comprehensive sedimentation tank 1, a collection monitoring device 7 arranged in the clarification tank 3, and a data acquisition instrument 8 electrically connected with the collection monitoring device 7.

[0035] Further, as a preferred embodiment of the present solution but not limited, the integrated sedimentation tank 1 is provided with an ecological floating bed 12 for planting aquatic plants, wherein the harvesting cycle of the aquatic plants is 2-3 months. The aquatic plants absorb nitrogen and phosphorus in the water, promote the decomposition of organic matter and the precipitation of suspended solids.

[0036] Further, as a preferred embodiment of the present solution but not limited, the second sludge discharge pipe 31 also communicates with the shore base to discharge excess sludge to the shore base as fertilizer. The sediment is periodically discharged by bottom discharge and discharged to the shore base as fertilizer.

[0037] Further, as a preferred embodiment of the present solution but not limited, the area of the intelligent intensive treatment system for tail water of the culture pond is 2-3% of the area of the fish pond, wherein the area of the integrated sedimentation tank 1 is 1-1.5% of the area of the fish pond.

[0038] Further, as a preferred embodiment of the present solution but not limited, the sludge discharge period of the integrated sedimentation tank 1 is 20-30 days, and the sludge discharge time of each time is 20-30 minutes.

[0039] Further, as a preferred embodiment of the present solution but not limited, the combined filler area 21 is provided with a double-ring large plastic ring 25 and a connecting rope 26 for stringing a plurality of double-ring large plastic rings 25, wherein the outer ring of the double-ring large plastic ring 25 is uniformly distributed with fiber bundles 251 formed by aldehyde fiber or polyester filament, and the inner ring and the outer ring are provided with plastic branches 252 in a spider web shape. It can not only hang film, but also effectively cut bubbles to improve the transfer rate and utilization rate of oxygen. The water and gas biological membrane is fully exchanged, and the organic matter in the water is efficiently treated.

[0040] Further, as a preferred embodiment of the present solution but not limited, the aeration system 4 includes a blowing device 41, a main air pipe 43, and an aeration assembly 44 connected symmetrically with the main air pipe 43; the aeration assembly 44 includes a first aeration branch pipe 441 and a second aeration branch pipe 442 connected with each other, and the second aeration branch pipe 442 is symmetrically connected with an aeration disc 42; the second aeration branch pipe 442 and the aeration disc 42 are respectively arranged at the bottom of the intensive biochemical purification tank 2.

[0041] Further, as a preferred embodiment of the present solution but not limited, it further includes a dredging device 9 for cleaning the first sludge discharge pipe 11 or the second sludge discharge pipe 31, and the double-ring large plastic ring 25 is additionally installed on the dredging device 9. The double-ring large plastic ring is used to clean the second sludge discharge pipe to prevent blockage.

[0042] Further, as a preferred embodiment of the present scheme but not limited, the dredging device 9 comprises a groove 91 provided on the inner side wall of the second sludge discharge pipe 31 and arranged along the length direction thereof, a cable 92 pre-buried on the groove 91, and a film 93 covering the groove 91, the cable 92 has two ends respectively penetrating out of the second sludge discharge pipe 31, the cable 92 is provided with a round baffle 94 and a positioning buckle 95 at the end thereof, the round baffle 94 comprises a main body part 941 for the cable 92 to penetrate through the center and a limiting part 942 corresponding to the groove 91, and the double-ring large plastic ring 25, the round baffle 94 and the positioning buckle 95 are sequentially arranged along the pulling direction of the cable 92. When the cable is pulled, the double-ring large plastic ring is moved by the round baffle, so as to clean the sludge on the inner wall of the second sludge discharge pipe and prevent the pipe from being blocked. The film prevents the sludge from entering the groove, and the film can be a plastic film. The limiting part is beneficial to the balance of the round baffle and the cleaning of the sludge in the groove.

[0043] The comprehensive sedimentation tank is provided with a baffling and guiding water-blocking cloth, a total nitrogen monitor is used for total nitrogen monitoring, and a liquid level monitoring device is used for liquid level control, the baffling and guiding water-blocking cloth increases the sedimentation effect of the sedimentation area, the total nitrogen monitoring and liquid level control provide intelligent monitoring for the treatment system, the intensive biochemical purification tank is used for biochemical treatment of pond tail water through multiple modules, and special biological bacteria fillers and an aeration system are used, and the clarifier provides sedimentation and purification, the water quality intelligent monitoring system of the application comprises a collection monitoring device, a data acquisition instrument and a data center, the collection monitoring device is arranged to monitor water quality samples of water discharged from the intensive biochemical purification tank, and the water quality samples are transmitted to the data center through the data acquisition instrument for analysis and sample data storage, so as to provide protection for fish pond treatment and effectively improve the quality of breeding water, guarantee the quality safety of breeding water and aquatic product quality safety, and the water quality intelligent monitoring system has small area occupation and achieves good ecological, economic and social benefits.

[0044] The present application overcomes and solves the problems of purification of fish pond tail water pollution sources and large area occupation and operation monitoring of the three-tank two-dam system, provides a fish pond tail water intelligent intensive treatment system which is simple to install and has low investment, can purify fish pond tail water, reduce the area occupation of the treatment system, intelligently monitor and control the operation of the system, lay a good foundation for a beautiful rural environment, and achieve coordination and unity of fish pond environment and fish pond tail water treatment, and beautify the surrounding of the fish pond.

[0045] The intensive biochemical purification pond is distributed in the whole fish pond, has a circular structure, is arranged in the fish pond, has a biological adsorption purification area in an inner layer part, utilizes the microbial biodegradation and adsorption treatment of soft filler and MBBR filler, is provided with an aeration system at the bottom, utilizes the micro-aeration pipe to provide sufficient oxidation for microbial growth, and the MBBR filler moves in the intensive biochemical purification pond, more fully contacts the pollutants of the tail water of the fish pond, the middle part is a vertical flow water distribution pipe which is uniformly distributed to the whole biological purification area, the two sides are filter layers which prevent the MBBR filler from flowing out, and the inside of the biochemical purification pond is used for cultivating the growth and reproduction of microorganisms and adsorbing and decomposing pollutants.

[0046] The intensive biochemical purification pond is a main unit for treating the tail water of a fish pond, and the water in the comprehensive sedimentation tank is pumped into the intensive biochemical purification pond, the organic pollutants in the tail water of the fish pond are decomposed by using aerobic microorganisms (mainly aerobic bacteria), and the tail water of the fish pond is harmlessly and biochemically treated. The mechanism is that when the tail water of the fish pond contacts the microorganisms, the soluble organic matters in the water are absorbed into the bacteria through the cell wall and cell membrane of the bacteria; the colloidal and suspended organic matters are adsorbed on the surface of the bacteria, are decomposed into soluble matters by the outer enzymes of the bacteria, and also enter the bacteria. The organic matters are oxidatively degraded in the bacteria through a decomposition and metabolism process, the generated energy is used for the needs of the life activities of the bacteria; a part of the oxidative intermediate products are synthesized into new cell matters through a synthesis metabolism, so that the bacteria can grow and reproduce. The final product of the treatment is stable inorganic matters such as carbon dioxide, water, ammonia, sulfate and phosphate. When the treatment is performed, the microorganisms should be supplied with sufficient oxygen and various necessary nutrient sources such as carbon, nitrogen, phosphorus and elements such as potassium, magnesium, calcium, sulfur and sodium; meanwhile, the survival conditions of the microorganisms should be controlled, for example, the pH is 6.5-9, and the water temperature is 10-35℃.

[0047] The above only describes the preferred embodiments of the present application, and is not used to limit the range of the present application, and other principles and basic structures which are the same as or similar to the present application are within the protection scope of the present application.

Claims

1. A smart and intensive wastewater treatment system for aquaculture ponds, characterized in that: The intelligent intensive treatment system for aquaculture pond tail water comprises a comprehensive sedimentation tank (1) for receiving aquaculture pond tail water for first-time sedimentation treatment, a first sludge discharge pipe (11) connected to the shore base at the bottom of the tank, an intensive biochemical purification tank (2) for receiving the upper clear water after the first-time sedimentation treatment in the comprehensive sedimentation tank (1), a clarifier (3) for receiving the treated water discharged from the intensive biochemical purification tank (2) for second-time sedimentation treatment, a second sludge discharge pipe (31) connected to the front end of the intensive biochemical purification tank (2) at the bottom of the clarifier (3), an aeration system (4) for aeration treatment of the intensive biochemical purification tank (2), a combined filler area (21) arranged in the middle of the intensive biochemical purification tank (2), a flow guide pipe (22) arranged on both sides of the combined filler area (21), MBBR biofilm filler (23), and a filter screen (24) arranged corresponding to the water outlet. The combined filler area (21) is provided with double-ring large plastic rings (25), and a connecting rope (26) for connecting a plurality of double-ring large plastic rings (25), wherein the outer ring of the double-ring large plastic ring (25) is uniformly distributed with fiber bundles (251) formed by aldehyde fiber or polyester filament, and the inner ring and the outer ring are provided with plastic branches (252) in a spider web shape. The system further comprises a dredging device (9) for cleaning the first sludge discharge pipe (11) or the second sludge discharge pipe (31), and the double-ring large plastic ring is installed on the dredging device (9). The dredging device (9) comprises a groove (91) arranged on the inner side wall of the second sludge discharge pipe (31) and extending along the length direction of the pipe, a cable (92) embedded in the groove (91), and a film (93) covering the groove (91), the cable (92) is arranged to pass through the second sludge discharge pipe (31) at both ends, the cable (92) is provided with a circular baffle (94) and a positioning buckle (95) at the end, the circular baffle (94) comprises a main body part (941) through which the cable (92) passes, and a limiting part (942) corresponding to the groove (91), and the double-ring large plastic ring, the circular baffle (94) and the positioning buckle (95) are arranged in sequence along the pulling direction of the cable (92). The system further comprises a total nitrogen monitor (5) and a liquid level monitoring device (6) arranged in the comprehensive sedimentation tank (1), a collection monitoring device (7) arranged in the clarifier (3), and a data acquisition instrument (8) electrically connected to the collection monitoring device (7). An ecological floating bed (12) for planting aquatic plants is arranged on the comprehensive sedimentation tank (1), and the harvesting cycle of the aquatic plants is 2-3 months. The second sludge discharge pipe (31) is also connected to the shore base to discharge excess sludge to the shore base as fertilizer. The area of the intelligent intensive treatment system for aquaculture pond tail water is 2-3% of the area of the fish pond, and the area of the comprehensive sedimentation tank (1) is 1-1.5% of the area of the fish pond.

2. The intelligent intensive treatment system for tail water of a culture pond according to claim 1, characterized in that: The sludge discharge period of the comprehensive sedimentation tank (1) is 20-30 days once, and the sludge discharge time is 20-30 minutes each time.

3. The intelligent intensive treatment system for tail water of a culture pond according to claim 1, characterized in that: ​ 4. The intelligent intensive treatment system for tail water of a culture pond according to claim 1, characterized in that: ​ 5. The intelligent intensive treatment system for tail water of a culture pond according to claim 1, characterized in that: ​ 6. The intelligent intensive treatment system for tail water of a culture pond according to claim 1, characterized in that: ​ 7. The intelligent intensive treatment system for tail water of a culture pond according to claim 1, characterized in that: The aeration system (4) comprises a blowing device (41), a main air pipe (43), and an aeration assembly (44) symmetrically connected with the main air pipe (43); the aeration assembly (44) comprises a first aeration branch pipe (441) and a second aeration branch pipe (442) connected with each other, and the second aeration branch pipe (442) is symmetrically connected with an aeration disc (42); the second aeration branch pipe (442) and the aeration disc (42) are arranged at the bottom of the intensive biochemical purification tank (2).

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