Tail water circulation treatment system

Abstract

The invention belongs to the technical field of aquaculture tail water treatment, and particularly relates to a tail water circulation treatment system which comprises a culture pond, a sedimentation pond, an aeration pond and an ecological purification pond. The culture pond is provided with a drain outlet, and the settling pond is connected with the drain outlet and used for receiving tail water from the culture pond; the aeration tank is connected with the sedimentation tank and is used for receiving supernate from the sedimentation tank; the ecological purification tank is connected with the aeration tank and is used for receiving aeration water from the aeration tank; the ecological purification pond is further provided with a water outlet pipe which is connected with the culture pond. The tail water circulating treatment system is used for treating and purifying the culture tail water in an ecological mode and then conveying the treated clean water back into the culture pond to form the tail water circulating treatment system, so that the tail water of the culture pond is treated and purified through an ecological technical means and in a precipitation and filtration mode and is recycled, and the treatment efficiency of the culture tail water is improved; the purification capacity is more stable, the adaptive treatment interval time is long, and the environmental pollution is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of aquaculture tail water treatment, and in particular relates to a tail water circulation treatment system. Background Art

[0002] With the rapid development of construction, aquaculture bases, as an important part of aquaculture project construction, have received increasing attention. During the aquaculture process, aquaculture water needs to be periodically treated and replaced. The water that needs to be treated is called tailwater. In the existing technology, if the tailwater (or sewage) generated by factory aquaculture is not treated (or the water quality after treatment still does not meet the standards) and is discharged, it will cause water resource waste and environmental pollution. Treatment requires the use of sewage treatment equipment. There are many types of sewage treatment equipment, which mainly use physical methods, chemical methods, or a combination of the two to treat sewage. Sometimes, it is necessary to add chemicals to the sewage treatment equipment. The use of chemicals or treating sewage by chemical methods will be detrimental to ecological protection. Summary of the Invention

[0003] The present application provides a tailwater circulation treatment system, aiming to solve at least one of the above-mentioned technical problems.

[0004] In one aspect, an embodiment of the present application provides a tailwater circulation treatment system, characterized by comprising:

[0005] A breeding pond, wherein the breeding pond has a sewage outlet;

[0006] a sedimentation tank connected to the sewage outlet and configured to receive tail water from the aquaculture pond;

[0007] an aeration tank connected to the sedimentation tank and configured to receive supernatant from the sedimentation tank;

[0008] An ecological purification pool is connected to the aeration pool and is used to receive aerated water from the aeration pool; the ecological purification pool also has an outlet pipe, which is connected to the breeding pool.

[0009] The above-mentioned tailwater circulation treatment system mainly includes sedimentation tanks, aeration tanks and ecological purification tanks. It treats and purifies the aquaculture tailwater in an ecological way, and then transports the treated clean water back to the aquaculture pond to form a tailwater circulation treatment system. It realizes the purification and reuse of aquaculture pond tailwater through ecological technical means and sedimentation and filtration methods, improves the treatment efficiency of aquaculture tailwater, makes the purification capacity more stable, and adapts to the characteristics of long treatment intervals and reduced environmental pollution.

[0010] In the technical solution of one embodiment, the sewage outlet is located at the lowest point of the breeding pond.

[0011] In the technical solution of one embodiment, the bottom of the breeding pond is conical, with the center being the lowest point, and the sewage outlet is located at the center of the conical bottom.

[0012] In the technical solution of one embodiment, an anti-escape net is provided at the sewage outlet to prevent the organisms cultured in the breeding pond from escaping.

[0013] In the technical solution of one embodiment, the tailwater circulation treatment system further includes a sewage well, the aquaculture pond and the sewage well are connected via a sewage pipe, and the sewage well and the sedimentation tank are connected via a water pump assembly.

[0014] In the technical solution of one embodiment, the water outlet of the water pump assembly is provided with a water gate switch.

[0015] In a technical solution of one embodiment, at least one guide plate is provided in the sedimentation tank, and the guide plate is configured to extend the water flow path.

[0016] In the technical solution of one embodiment, a water quality monitoring device is provided on the water outlet pipe to detect the water quality in the water outlet pipe.

[0017] In the technical solution of one embodiment, the outlet pipe and the breeding pond are connected through a return pipe.

[0018] In a technical solution of one embodiment, a first filter dam is provided between the sedimentation tank and the aeration tank, and the first filter dam is configured to filter the supernatant flowing from the sedimentation tank to the aeration tank.

[0019] In a technical solution of one embodiment, a second filter dam is provided between the aeration tank and the ecological purification tank, and the second filter dam is configured to filter aerated water flowing from the aeration tank to the ecological purification tank.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in this application are used to illustrate preferred embodiments to facilitate a person skilled in the art to clearly understand various other advantages and benefits, and are not to be considered as limiting the present application. In addition, the same reference numerals are used throughout the drawings to represent the same components.

[0022] Figure 1 This is a schematic elevation view of a tailwater circulation treatment system in one embodiment of the present application.

[0023] Figure 2 This is a schematic top view of a tail water circulation treatment system in one embodiment of the present application.

[0024] Explanation of the accompanying drawings: breeding pond 10, sewage outlet 11, escape prevention net 12; sewage well 20, sewage pipe 21, water pump assembly 22, sluice switch 23; sedimentation tank 30, drainage plate 31, first filter dam 32; aeration tank 40, second filter dam 41; ecological purification tank 50, outlet pipe 51, water quality monitoring device 52, return pipe 53. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0028] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0029] See Figure 1 and Figure 2 The embodiment of the present application provides a tailwater circulation treatment system, which aims to achieve the purification and recycling of aquaculture tailwater through ecological methods and the use of sedimentation and filtration methods, thereby improving the treatment efficiency of aquaculture tailwater and reducing environmental pollution. The tailwater circulation treatment system mainly includes a breeding pond 10, a sedimentation tank 30, an aeration tank 40 and an ecological purification tank 50. The breeding pond 10 has a sewage outlet 11, and the sedimentation tank 30 is connected to the sewage outlet 11. The sedimentation tank 30 is used to receive the tailwater from the breeding pond 10 and perform sedimentation treatment. The aeration tank 40 is connected to the sedimentation tank 30 for receiving the supernatant from the sedimentation tank 30 and performing aeration treatment. The ecological purification tank 50 is connected to the aeration tank 40 for receiving aerated water from the aeration tank 40; the ecological purification tank 50 also has an outlet pipe 51, which is connected to the breeding pond 10. The tailwater circulation treatment system treats and purifies the aquaculture tailwater in an ecological way, and then transports the treated clean water back to the breeding pond 10. The entire system cooperates with each other or operates alternately to pump out the tail water from the breeding pond 10, and after treating the tail water, the treated water is transported to the breeding pond 10 to form a tail water circulation treatment system, which realizes the purification and reuse of the tail water from the breeding pond 10 through ecological technical means and the use of sedimentation and filtration methods, thereby improving the treatment efficiency of the breeding tail water, making the purification capacity more stable, and adapting to the characteristics of long treatment intervals and reduced environmental pollution.

[0030] It is understandable that the connection between the sedimentation tank 30, the aeration tank 40, the ecological purification tank 50, and the breeding pond 10 can be a pipeline connection, a ditch connection, or an overflow connection.

[0031] It should be noted that the breeding pond 10 is mainly used for aquaculture.

[0032] It should be noted that sedimentation tank 30 is used to precipitate suspended solids in the tailwater. It is located at the beginning of the system and is connected to the tailwater discharge port of aquaculture pond 10. Suspended solids in the tailwater settle in sedimentation tank 30, where organic matter undergoes anaerobic fermentation at the pond bottom, partially decomposing into inorganic matter. Some macromolecular organic matter is converted into small molecules that dissolve in the water. The humus that settles at the pond bottom is also degraded through anaerobic reactions. Aquatic plants and aquatic microorganisms are housed within sedimentation tank 30, which serves to slow the flow of water and absorb nutrients from the tailwater.

[0033] It should be noted that the bottom of the aeration tank 40 is covered with a plastic film, and multiple aeration components are evenly distributed inside. Porous filter materials are added inside the aeration components to increase the dissolved oxygen content in the water body by increasing oxygen at the bottom of the aeration tank. At the same time, microbial preparations such as photosynthetic bacteria can also be added to the aeration tank 40 to degrade pollutants in the water body through the decomposition action of microorganisms.

[0034] Specifically, the aeration tank 11 is provided with a support assembly, an oxygenating assembly and a lifting assembly. The oxygenating assembly is used to increase the oxygen content in the water. The oxygenating assembly is installed on the support assembly. The lifting assembly can adjust the height of the support assembly and the oxygenating assembly in the aeration tank 11 (not shown in the figure).

[0035] It should be noted that the ecological purification pond 50 cultivates various types of aquatic plants and animals, including submerged, emergent, and floating-leaf aquatic plants, which are used to absorb and transform multi-purpose nutrients such as nitrogen and phosphorus. Gravel, ceramsite, and silt of different particle sizes are laid to construct a tailwater purification matrix. The matrix is ​​used to grow herbaceous plants, cultivate saprophagous sandworms, and cultivate multifunctional microorganisms, promoting the transformation and utilization of nutrients in the aquaculture tailwater and achieving standard discharge of aquaculture tailwater. The ecological purification pond 50 can also stock a small number of herbivorous fish and filter-feeding shellfish to filter the planktonic plants and animals in the water body, further transforming and removing nutrients in the water body. Multiple water trucks are installed on the surface of the ecological purification pond 50 to promote internal circulation of the pond water, promote the growth of microalgae, and improve purification efficiency. The principle of tailwater purification in this pond is very similar to the self-purification mechanism of natural waters. Organic matter in the water is oxidized through the metabolic activity of aerobic microorganisms, or stabilized through decomposition by anaerobic microorganisms. The discharged aquaculture tailwater is treated and purified in an ecological way. Specifically, filter-feeding fish (such as silver carp and bighead carp) are stocked in the ecological purification pond 50, and submerged, emergent and floating aquatic plants are planted, wherein the aquatic plants cover more than 80% of the area of ​​the ecological purification pond.

[0036] See also Figure 1 As shown, in some embodiments, the sewage outlet 11 is located at the lowest point of the breeding pond 10 to facilitate the discharge of dirty tail water (aquatic feces will settle at the bottom of the pond).

[0037] Specifically, the bottom of the breeding pond 10 is conical, with the center being the lowest point, and the sewage outlet 11 is opened at the center of the conical bottom.

[0038] Furthermore, an anti-escape net 12 is provided at the sewage outlet 11 to prevent the escape of organisms cultured in the breeding pond 10. This can prevent fish and other aquatic products from entering the sewage outlet 11 and causing blockage.

[0039] See also Figure 1As shown, in some embodiments, the tailwater recycling treatment system further includes a sewage well 20, the aquaculture pond 10 and the sewage well 20 are connected via a sewage pipe 21, and the sewage well 20 and the sedimentation tank 30 are connected via a pump assembly 22, and the water outlet of the pump assembly 22 is equipped with a water gate switch 23. The tailwater is transported from the aquaculture pond 10 to the sedimentation tank 30 via the sewage pipe 21 and the pump assembly 22. Specifically, the sewage pipe 21 is arranged horizontally, and one end is connected to the sewage outlet 11; the sewage well 20 is excavated next to the breeding pond 10, and is a vertical shaft structure. The inner bottom of the sewage well 20 is connected to the sewage pipe 21, and the sewage pipe 21 is used to discharge the tail water inside the breeding pond 10 into the sewage well 20; the water pumping assembly 22 is arranged at the inner bottom of the sewage well 20, and the water outlet end of the water pumping assembly 22 is connected to the water gate switch 23; the sedimentation tank 30 is arranged on the ground, and the water pumping assembly 22 is used to extract the tail water in the sewage well 20 and pump it into the sedimentation tank 30, and the sedimentation tank 30 is used to settle the tail water.

[0040] See also Figure 2 As shown, in some embodiments, at least one guide plate 31 is provided in the sedimentation tank 30. The guide plate 31 is configured to extend the water flow path, increase the water retention time, and enhance the water self-purification ability. Figure 2 The drainage plate 31 shown divides the sedimentation tank 30 into an S-shaped waterway, increasing water retention time and enhancing the water's self-purification ability. Various aquatic plants, including submerged, emergent, and floating plants, can be planted inside the sedimentation tank 30 to further filter large particulate pollutants from the aquaculture tailwater.

[0041] See also Figure 2 As shown, in some embodiments, the water outlet pipe 51 is provided with a water quality monitoring device 52 for monitoring the quality of the treated and purified water for recycling.

[0042] See also Figure 2 As shown, in some embodiments, the outlet pipe 51 is connected to the aquaculture pond 10 via a return pipe 53. The return pipe 53 can be a conventional pipe or a trench excavated to connect to the aquaculture pond 10, thereby achieving the purpose of recycling the return water. The specific method used can be determined based on actual site conditions and is not limited here.

[0043] See also Figure 2 As shown, in some embodiments, a first filter dam 32 is provided between the sedimentation tank 30 and the aeration tank 40 . The first filter dam 32 is configured to filter the supernatant flowing from the sedimentation tank 30 to the aeration tank 40 .

[0044] See also Figure 2 As shown, in some embodiments, a second filter dam 41 is provided between the aeration tank 40 and the ecological purification tank 50 . The second filter dam 41 is configured to filter the aerated water flowing from the aeration tank 40 to the ecological purification tank 50 .

[0045] In such Figure 2 In the illustrated embodiment, the sedimentation tank 30, aeration tank 40, and ecological purification tank 50 can be formed into a single large tank, separated by two walls. A first filter dam 32 and a second filter dam 41 can be located on the corresponding walls. The first filter dam 32 is located on the wall between the sedimentation tank 30 and the aeration tank 40, filtering the tailwater discharged from the sedimentation tank 30 and transferring it to the aeration tank 40. The second filter dam 41 is located on the wall between the aeration tank 40 and the ecological purification tank 50, filtering the tailwater discharged from the aeration tank 40 and transferring it to the ecological purification tank 50.

[0046] Specifically, the filter dam (the first filter dam 32 and the second filter dam 41) includes a permeable dam body and internal filter material (not shown in the figure), wherein the dam body is made of a stacked building material structure; the internal filter material is a multi-layer filter material structure, which is loaded by a breathable porous structure, and the filter material is distributed in a manner such that the particle diameter gradually decreases from top to bottom.

[0047] Furthermore, plants are planted on the upper part of the filter dam to absorb some of the pollutants in the aquaculture tail water.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent replacements for some or all of the technical features therein; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A tail water circulation treatment system, characterized in that: include: A breeding pond, wherein the breeding pond has a sewage outlet; a sedimentation tank connected to the sewage outlet and configured to receive tail water from the aquaculture pond; an aeration tank connected to the sedimentation tank and configured to receive supernatant from the sedimentation tank; An ecological purification pool is connected to the aeration pool and is used to receive aerated water from the aeration pool; the ecological purification pool also has an outlet pipe, which is connected to the breeding pool.

2. The tailwater circulation treatment system according to claim 1, characterized in that: The sewage outlet is located at the lowest point of the breeding pond.

3. The tailwater circulation treatment system according to claim 2, characterized in that: The bottom of the breeding pond is conical, with the center being the lowest point, and the sewage outlet is located at the center of the conical bottom.

4. The tailwater circulation treatment system according to claim 3, characterized in that: The sewage outlet is provided with an anti-escape net to prevent the organisms cultured in the breeding pond from escaping.

5. The tail water circulation treatment system according to claim 3, characterized in that: The tail water circulation treatment system further comprises a sewage well, the breeding pond and the sewage well are connected via a sewage pipe, and the sewage well and the sedimentation tank are connected via a water pump assembly.

6. The tailwater circulation treatment system according to claim 5, characterized in that: The water outlet end of the water pump assembly is provided with a water gate switch.

7. The tailwater circulation treatment system according to claim 1, characterized in that: At least one guide plate is provided in the sedimentation tank, and the guide plate is configured to extend the water flow path.

8. The tailwater circulation treatment system according to claim 1, characterized in that: The outlet pipe is provided with a water quality monitoring device for detecting the water quality in the outlet pipe; the outlet pipe is connected to the breeding pond via a return water pipe.

9. The tail water circulation treatment system according to claim 1, characterized in that: A first filter dam is provided between the sedimentation tank and the aeration tank, and the first filter dam is configured to filter the supernatant flowing from the sedimentation tank to the aeration tank.

10. The tail water circulation treatment system according to claim 1 or 9, characterized in that: A second filter dam is provided between the aeration tank and the ecological purification tank, and the second filter dam is configured to filter aerated water flowing from the aeration tank to the ecological purification tank.

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