Intelligent intensive treatment system for tail water of aquaculture pond

Abstract

The invention relates to an intelligent intensive treatment system for tail water of an aquaculture pond, which comprises a comprehensive sedimentation tank used for receiving the aquaculture tail water discharged from a fishpond to perform primary sedimentation treatment, and a first sludge discharge pipe communicated with a shore base is arranged at the bottom of the comprehensive sedimentation tank; and the tail water in the second step enters an intensive biochemical purification tank and is used for receiving the supernatant clear water after the primary sedimentation treatment of the comprehensive sedimentation tank. According to the intelligent intensive treatment system for the tail water of the aquaculture pond, the tail water enters the intensive biochemical purification tank for further treatment after being subjected to primary sedimentation and filtration treatment in the comprehensive sedimentation tank, so that organic pollutants, phosphorus, nitrogen and heavy metals in sewage can be effectively removed; treated water obtained after the tail water enters the clarification tank to be subjected to secondary sedimentation can be used for farmland irrigation and recycling of aquaculture fish ponds. The system enhances the purification of organic pollutants and nitrogen removal of the fishpond tail water, improves the purification efficiency of the fishpond tail water, and can reduce the occupied fishpond area.

Description

Technical Field

[0001] The present invention relates to the field of aquaculture technology and tail water treatment technology, and in particular to an intelligent intensive treatment system for tail water of aquaculture ponds. Background Art

[0002] At present, aquaculture still adopts the method of large-scale drainage, which not only consumes water resources greatly, but also pollutes the water bodies and pond bottom mud caused by the feed residues and fish, shrimp and crab excrement released during the aquaculture process, making the aquaculture water increasingly eutrophic, causing increasing harm to the surrounding aquatic environment and ecological environment. Summary of the invention

[0003] In order to solve the above problems, the present technical solution provides an intelligent intensive treatment system for tail water of aquaculture ponds.

[0004] To achieve the above purpose, the technical solution is as follows:

[0005] An intelligent intensive treatment system for tail water of aquaculture ponds, comprising

[0006] A comprehensive sedimentation tank, which is used to receive the aquaculture tail water discharged from the fish pond for the first sedimentation treatment, and the bottom of which is provided with a first row of mud pipes connected to the shore;

[0007] An intensive biochemical purification tank, which is used to receive the upper layer of clear water after the first sedimentation treatment in the comprehensive sedimentation tank, and the intensive biochemical purification tank includes a combined filler area arranged in the middle, guide pipes arranged on both sides of the combined filler area, MBBR biofilm fillers, and filter screens arranged at corresponding water outlets;

[0008] A clarification tank, which is used to receive the treated water discharged from the intensive biochemical purification tank for a second sedimentation treatment, and a second mud discharge pipe connected to the front end of the intensive biochemical purification tank is provided at the bottom of the clarification tank;

[0009] An aeration system is used to perform aeration treatment on the intensive biochemical purification pool.

[0010] The intelligent intensive treatment system for tail water of aquaculture ponds as described above also includes a total nitrogen monitor and a liquid level monitoring device arranged in the comprehensive sedimentation tank, a collection monitoring device arranged in the clarification tank, and a data acquisition instrument electrically connected to the collection monitoring device.

[0011] In the intelligent intensive treatment system for tail water of aquaculture ponds as described above, the comprehensive sedimentation tank is provided with an ecological floating bed for growing aquatic plants, wherein the harvesting period of the aquatic plants is 2-3 months.

[0012] In the intelligent intensive treatment system for tail water of aquaculture ponds as described above, the second row of mud pipes is also connected to the shore to discharge excess sludge to the shore as fertilizer.

[0013] As described above, the intelligent intensive treatment system for tail water of aquaculture ponds has an area of ​​2-3% of the area of ​​the fish pond, wherein the area of ​​the comprehensive sedimentation tank accounts for 1-1.5% of the area of ​​the fish pond.

[0014] In the intelligent intensive treatment system for tail water from aquaculture ponds as described above, the sewage discharge cycle of the comprehensive sedimentation tank is once every 20-30 days, and the sewage discharge time each time is 20-30 minutes.

[0015] As described above, in an intelligent intensive treatment system for tailwater of aquaculture ponds, the combined filler area is provided with a double-circle large plastic ring and a connecting rope for connecting a plurality of the double-circle large plastic rings in series, wherein fiber bundles formed by aldehyded fibers or polyester fibers are evenly distributed on the outer ring of the double-circle large plastic ring, and spider-web-like plastic branches are provided between the inner ring and the outer ring.

[0016] As described above, in the intelligent intensive treatment system for tail water of aquaculture ponds, the aeration system includes an air blowing device, a main air duct, and an aeration component symmetrically connected to the main air duct; the aeration component 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 to an aeration plate; the second aeration branch pipe and the aeration plate are respectively arranged at the bottom of the intensive biochemical purification tank.

[0017] The intelligent intensive treatment system for tailwater of aquaculture ponds as described above also includes a dredging device for cleaning the first mud discharge pipe or the second mud discharge pipe, and the double-circle large plastic ring is installed on the dredging device.

[0018] As described above, in an intelligent intensive treatment system for tailwater of an aquaculture pond, the dredging device comprises a groove arranged on the inner side wall of the second mud discharge pipe and along its length direction, a cable pre-buried in the groove, and a coating covering the groove, both ends of the cable respectively pass through the second mud discharge pipe, a circular baffle and a positioning buckle are provided at the end of the cable, the circular baffle comprises a main body for the cable to pass through the center of the circle, and a limiting portion corresponding to the groove, and the double-circle large plastic ring, the circular baffle and the positioning buckle are arranged in sequence along the pulling direction of the cable.

[0019] The beneficial effects of this application are:

[0020] The present invention provides an intelligent intensive treatment system for tail water from aquaculture ponds. After the first sedimentation and filtration treatment in a comprehensive sedimentation tank, the tail water enters an intensive biochemical purification tank for further treatment, which can effectively remove organic pollutants, phosphorus, nitrogen and heavy metals in the sewage. The tail water enters a clarification tank for a second sedimentation and the treated water can be used for farmland irrigation and fish pond reuse. The intensive biochemical purification tank uses composite fillers and MBBR fillers to increase the amount of microorganisms and increase the types; it strengthens the purification of organic pollutants and nitrogen removal in fish pond tail water, which not only improves the purification efficiency of fish pond tail water, but also reduces the occupied fish pond area. Description of the drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0022] Figure 1 It is a structural layout diagram of the present invention;

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

[0024] Figure 3 It is a schematic diagram of the structure of the aeration system;

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

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

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] An intelligent intensive treatment system for tail water of aquaculture ponds, comprising

[0029] A comprehensive sedimentation tank 1, which is used to receive the aquaculture tail water discharged from the fish pond for the first sedimentation treatment, and a first mud discharge pipe 11 connected to the shore is provided at the bottom of the comprehensive sedimentation tank 1;

[0030] The intensive biochemical purification pool 2 is used to receive the upper clear water after the first sedimentation treatment of the comprehensive sedimentation pool 1. The intensive biochemical purification pool 2 includes a combined filler area 21 arranged in the middle, a guide pipe 22 arranged on both sides of the combined filler area 21, an MBBR biofilm filler 23, and a filter screen 24 arranged at the corresponding water outlet; the MBBR biofilm filler contains biological affinity components and antioxidant components, has high biological activity and antioxidant properties, improves the adhesion ability of microorganisms and the durability of the filler, and effectively improves the rapid biofilm formation ability and service life of the filler. It promotes the catalytic action of biological enzymes and the nitrification of nitrifying bacteria by adding enhancing components for biological enzymes (especially the formulation of enzyme-promoting components for nitrifying bacteria) and water inlet, improves the hydrophilicity of the filler and the nitrification ability of nitrifying bacteria, makes it very easy for microorganisms to adsorb on the filler, and significantly improves the ability of microorganisms to decompose pollutants in the tail water of the fish pond and remove ammonia nitrogen.

[0031] A clarification tank 3, which is used to receive the treated water discharged from the intensive biochemical purification tank 2 for a second sedimentation treatment, and a second mud discharge pipe 31 connected to the front end of the intensive biochemical purification tank 2 is provided at the bottom thereof;

[0032] The aeration system 4 is used to perform aeration treatment on the intensive biochemical purification pool 2 .

[0033] The present invention provides an intelligent intensive treatment system for tailwater of aquaculture ponds. After the first sedimentation treatment and filtration in the comprehensive sedimentation tank, the intensive biochemical purification tank can effectively remove organic matter, phosphorus, nitrogen and heavy metals in the sewage. The treated water after the second sedimentation treatment in the clarification tank can be used for farmland irrigation and fish pond reuse. The use of combined fillers and MBBR fillers can not only enhance the tailwater environment of the fish pond, but also reduce the area occupied by the fish pond. It effectively handles the tailwater discharge problem of aquaculture fish ponds and reduces the area occupied by the traditional three-tank two-dam ecological purification (reduced by 1 / 3 to 1 / 2). The combined fillers, MBBR fillers, aeration systems, microorganisms, etc. in the biochemical purification area adsorb, transfer, degrade and filter the tailwater of the fish pond. The purified tailwater of the fish pond is then discharged into the river or circulated to the fish pond; the aquaculture efficiency of the fish pond is greatly improved, the water quality environment further optimizes the fish growth environment, and the per mu yield is greatly improved.

[0034] Furthermore, as a preferred implementation mode of the present scheme but not limitation, it also 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 to the collection monitoring device 7.

[0035] Further, as a preferred embodiment of the present invention but not limiting, the comprehensive sedimentation tank 1 is provided with an ecological floating bed 12 for growing aquatic plants, wherein the harvesting period of the aquatic plants is 2-3 months. The aquatic plants absorb nitrogen and phosphorus in the water, promoting the decomposition of organic matter and the precipitation of suspended matter.

[0036] Furthermore, as a preferred embodiment of the present invention but not limiting, the second sludge discharge pipe 31 is also connected to the shore to discharge excess sludge to the shore as fertilizer. The sediment is discharged regularly by bottom discharge and discharged to the shore as fertilizer.

[0037] Furthermore, as a preferred implementation mode of the present invention but not limitation, the area of ​​the intelligent intensive treatment system for tail water of aquaculture ponds is 2-3% of the area of ​​the fish pond, wherein the area of ​​the comprehensive sedimentation tank 1 accounts for 1-1.5% of the area of ​​the fish pond.

[0038] Furthermore, as a preferred implementation mode of the present scheme but not limitation, the sewage discharge cycle of the comprehensive sedimentation tank 1 is once every 20-30 days, and the sewage discharge time each time is 20-30 minutes.

[0039] Further, as a preferred embodiment of the present solution but not a limitation, the combined filler area 21 is provided with a double-circle large plastic ring 25 and a connecting rope 26 for connecting a plurality of the double-circle large plastic rings 25 in series, wherein a fiber bundle 251 formed of aldehyded fiber or polyester yarn is evenly distributed on the outer ring of the double-circle large plastic ring 25, and a spider web-shaped plastic branch 252 is provided between the inner ring and the outer ring. It can not only hang biofilm, but also effectively cut bubbles, improve the transfer rate and utilization rate of oxygen, so that the water-gas biofilm is fully exchanged and the organic matter in the water is efficiently treated.

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

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

[0042] Further, as a preferred embodiment of the present scheme but not a limitation, the desilting device 9 includes a groove 91 provided on the inner side wall of the second mud discharge pipe 31 and arranged along the length direction thereof, a cable 92 pre-buried in the groove 91, and a coating 93 covering the groove 91, the two ends of the cable 92 respectively pass through the second mud discharge pipe 31, the end of the cable 92 is provided with a circular baffle 94, and a positioning buckle 95, the circular baffle 94 includes a main body 941 for the cable 92 to pass through the center of the circle, and a limiting portion 942 corresponding to the groove 91, and the double-circle large plastic ring 25, the circular baffle 94 and the positioning buckle 95 are arranged in sequence along the pulling direction of the cable 92. When the cable is pulled, the circular baffle pushes the double-circle large plastic ring to move, thereby cleaning the sludge on the inner wall of the second mud discharge pipe to prevent blockage. The coating prevents the sludge from entering the groove, and the coating can be a plastic film. The limiting portion is conducive to the balance of the circular baffle position and cleaning the sludge in the groove at the same time.

[0043] The comprehensive sedimentation tank is provided with a baffle and diversion water retaining cloth, a total nitrogen monitor is used to monitor the total nitrogen, and a liquid level monitoring device is used to control the liquid level. The baffle and diversion water retaining 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 a pond tail water biochemical through a multi-stage module, adopts a proprietary biological bacteria filler and an aeration system, and the clarification tank provides sedimentation purification. The water quality intelligent monitoring system of the present invention includes a collection monitoring device, a data acquisition instrument and a data center. The collection monitoring device is arranged at the effluent of the intensive biochemical purification tank to monitor the water quality sample, and transmits the sample data to the data center through the data acquisition instrument for analysis and preservation, thereby providing guarantee for the management of fish ponds, effectively improving the quality of aquaculture water, and ensuring the quality safety of aquaculture water and aquatic products. It occupies a small area and has achieved good ecological, economic and social benefits.

[0044] The invention overcomes and solves the problems of purification of fish pond tail water pollution source and large occupation of area and operation monitoring of the three ponds and two dams currently used. The present invention provides an intelligent intensive treatment system for aquaculture pond tail water with simple installation and low investment, which can not only purify the fish pond tail water body and reduce the occupation of area due to the construction of the treatment system, but also intelligently and intensively monitor and supervise the operation of the system, pave the way for a beautiful rural environment, and at the same time achieve the coordination and unification of the fish pond environment and the fish pond tail water treatment, and beautify the fish pond surrounding area.

[0045] The intensive biochemical purification pool is distributed throughout the fish pond and has a circular structure. It is set up in the fish pond, with the inner part of the biological adsorption purification area utilizing the microbial biodegradation and adsorption treatment of soft fillers and MBBR fillers. An aeration system is set up at the bottom, utilizing micro-aeration tubes to provide sufficient oxidation for microbial growth. The MBBR fillers swim in the intensive biochemical purification pool to more fully contact the pollutants in the fish pond tail water. In the middle is a vertical water distribution pipe, which is evenly diverted and laid out in the entire biological purification area. On both sides are filter layers to prevent the outflow of MBBR fillers. Microorganisms are cultured inside the biochemical purification pool to grow and reproduce, and to adsorb and decompose pollutants.

[0046] The intensive biochemical purification tank is the main unit for treating the tail water of aquaculture fish ponds. The water from the comprehensive sedimentation tank enters the intensive biochemical purification tank through the lifting pump, and aerobic microorganisms (mainly aerobic bacteria) are used to decompose the organic pollutants in the sewage, so as to make the tail water of the fish pond harmless. The mechanism is that when the tail water of the fish pond comes into contact with microorganisms, the soluble organic matter in the water is absorbed into the bacteria through the cell wall and cell membrane of the bacteria; the colloids and suspended organic matter are adsorbed on the surface of the bacteria, and after being decomposed into soluble substances by the exoenzymes of the bacteria, they also enter the bacteria. These organic substances are oxidized and degraded in the bacteria through the decomposition and metabolism process, and the energy generated is used for the life activities of the bacteria; a part of the oxidized intermediates are transformed into new cell substances through anabolism, so that the bacteria can grow and reproduce. The final products of the treatment are stable inorganic substances such as carbon dioxide, water, ammonia, sulfate and phosphate. During treatment, 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; at the same time, the living conditions of the microorganisms should be controlled, such as the pH should be between 6.5 and 9, the water temperature should be between 10 and 35°C, etc.

[0047] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are within the protection scope of the present application.

Claims

1. An intelligent intensive treatment system for tail water of aquaculture ponds, characterized by: include A comprehensive sedimentation tank (1) is used to receive aquaculture tail water discharged from a fish pond for a first sedimentation treatment, and a first mud discharge pipe (11) connected to a shore is provided at the bottom of the comprehensive sedimentation tank; An intensive biochemical purification tank (2) is used to receive upper layer clear water after the first sedimentation treatment in the comprehensive sedimentation tank (1), the intensive biochemical purification tank (2) comprising a combined filler area (21) arranged in the middle, flow guide pipes (22) arranged on both sides of the combined filler area (21), MBBR biofilm fillers (23), and a filter screen (24) arranged at a corresponding water outlet; A clarification tank (3), which is used to receive the treated water discharged from the intensive biochemical purification tank (2) for secondary sedimentation treatment, and has a second mud discharge pipe (31) at its bottom that is connected to the front end of the intensive biochemical purification tank (2); An aeration system (4) is used to perform aeration treatment on the intensive biochemical purification pool (2).

2. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 1 is characterized by: It also 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 device (8) electrically connected to the collection monitoring device (7).

3. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 1 is characterized by: The comprehensive sedimentation tank (1) is provided with an ecological floating bed (12) for growing aquatic plants, wherein the harvesting period of the aquatic plants is 2-3 months.

4. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 1 is characterized by: The second sludge pipe (31) is also connected to the shore to discharge excess sludge to the shore as fertilizer.

5. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 1 is characterized by: The area of ​​the intelligent intensive treatment system for tail water of the breeding pond is 2-3% of the area of ​​the fish pond, wherein the area of ​​the comprehensive sedimentation tank (1) accounts for 1-1.5% of the area of ​​the fish pond.

6. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 1 is characterized by: The sewage discharge cycle of the comprehensive sedimentation tank (1) is once every 20-30 days, and the sewage discharge time each time is 20-30 minutes.

7. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 1 is characterized by: The combined filler area (21) is provided with a double-circle large plastic ring (25) and a connecting rope (26) for connecting a plurality of the double-circle large plastic rings (25) in series, wherein fiber bundles (251) formed by aldehyded fibers or polyester fibers are evenly distributed on the outer ring of the double-circle large plastic ring (25), and spider-web-shaped plastic branches (252) are provided between the inner ring and the outer ring.

8. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 1 is characterized by: The aeration system (4) comprises an air blowing device (41), a main air duct (43), and an aeration assembly (44) symmetrically connected to the main air duct (43); the aeration assembly (44) comprises a first aeration branch pipe (441) and a second aeration branch pipe (442) connected to each other, and the second aeration branch pipe (442) is symmetrically connected to an aeration plate (42); the second aeration branch pipe (442) and the aeration plate (42) are respectively arranged at the bottom of the intensive biochemical purification tank (2).

9. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 7, characterized in that: It also comprises a dredging device (9) for cleaning the first mud discharge pipe (11) or the second mud discharge pipe (31), and the double-circle large plastic ring (25) is mounted on the dredging device (9).

10. The intelligent intensive treatment system for tail water of aquaculture ponds according to claim 9, characterized in that: The dredging device (9) comprises a groove (91) provided on the inner side wall of the second mud discharge pipe (31) and arranged along the length direction thereof, a cable (92) pre-buried in the groove (91), and a coating (93) covering the groove (91); both ends of the cable (92) respectively pass through the second mud discharge pipe (31); a circular baffle (94) and a positioning buckle (95) are provided at the end of the cable (92); the circular baffle (94) comprises a main body (941) for the cable (92) to pass through the center of the circle, and a limiting portion (942) corresponding to the groove (91); the double-circle large plastic ring (25), the circular baffle (94) and the positioning buckle (95) are arranged in sequence along the pulling direction of the cable (92).

Images