Fish pond tail water treatment system

Abstract

The utility model discloses a culture fishpond tail water treatment system, which comprises an algae incubator, an algae liquid putting device and a bacteria-algae symbiotic bed, the algae liquid putting device is used for putting algae liquid in the algae incubator onto the bacteria-algae symbiotic bed, and the bacteria-algae symbiotic bed is positioned in the culture fishpond tail water and is used for purifying the culture fishpond tail water. The system integrates the algae liquid circulating device and the algae liquid adding device, the automation degree is high, and compared with a traditional treatment technology, the treatment technology is easy to operate, high in efficiency, low in cost, environmentally friendly, low in carbon and free of secondary pollution, and is an economical and effective mode for purifying the tail water of the aquaculture fishpond.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment for aquaculture ponds, in particular to a tail water treatment system for aquaculture ponds. Background Art

[0002] In recent years, the aquaculture industry in China has developed rapidly, and the aquaculture mode has gradually changed from extensive to semi-intensive and intensive modes. In order to improve the aquaculture output and pursue the maximization of economic benefits, farmers usually increase the aquaculture density and a large amount of feed additives and growth agents that also have an impact on the ecological environment are input. In addition, in order to prevent diseases of aquaculture objects, disinfectants, antibiotics and other drugs are also added. The tail water of these fish ponds containing pollutants such as residual baits, excreta and fishery drugs is discharged during the daily water change period and the dry pond period, causing environmental pollution. The environmental pollution problem of the tail water of aquaculture ponds has gradually attracted wide social attention. Different from domestic sewage and industrial wastewater, the tail water of aquaculture ponds has the characteristics of wide non-point source and large water volume, and for different aquaculture modes, its tail water discharge characteristics and pollutant differences are relatively large, which causes difficulties in the treatment of the tail water of aquaculture ponds and restricts the sustainable development of the aquaculture industry.

[0003] At present, the main technologies for treating the tail water of aquaculture ponds are physical, chemical and biological technologies.

[0004] The physical treatment technologies mainly include filtration, adsorption, precipitation, etc., which are the main measures for the traditional treatment of fish pond tail water. Among them, the filtration and precipitation methods are still the main basic technologies for the treatment of fish pond tail water at present. Through filtration and precipitation, suspended particles with larger density can be removed, and to a certain extent, the suspended substances and some pollutants in the fish pond tail water can be removed, but the pollutants in the fish pond tail water cannot be effectively removed, especially the removal effects of ammonia nitrogen, total nitrogen and total phosphorus in the tail water are not good.

[0005] The chemical treatment technologies mainly include neutralization method, redox method, oxidation method, etc., and are usually combined with physical method or biological method for the treatment of fish pond tail water. The chemical treatment technology can convert the pollutants in the fish pond tail water into small molecule substances and remove them, which is a simple and feasible method. However, since the chemical treatment technology will produce secondary pollutants, especially the increase of dissolved substances remaining in the fish pond tail water, it is not conducive to the recycling of tail water. Content of the Utility Model

[0006] The purpose of the utility model is to provide a tail water treatment system for aquaculture ponds with high efficiency, low cost, green and low-carbon, and no secondary pollution.

[0007] In order to solve the above technical problems, the technical scheme adopted by the utility model is as follows:

[0008] A fish pond tailwater treatment system comprises an algae incubator, an algae liquid delivery device and a bacteria-algae symbiotic bed. The algae liquid delivery device delivers the algae liquid in the algae incubator to the bacteria-algae symbiotic bed. The bacteria-algae symbiotic bed is located in the fish pond tailwater and is used for purifying the fish pond tailwater.

[0009] Furthermore, the water used in the algae incubator is tail water from a fish pond, and the algae in the algae incubator use the residual bait and metabolic products of the cultured objects in the tail water from the fish pond as nutrients for their own growth.

[0010] Furthermore, it also includes an algae liquid circulation device, which is used to return the algae liquid at the end of the algae incubator to the front end of the algae incubator, so that the algae liquid in the algae incubator circulates.

[0011] Furthermore, the algae liquid delivery device includes an algae liquid delivery pipeline and a delivery pump, the liquid inlet port of the delivery pump is connected to the algae liquid discharge port of the algae incubator, the discharge port of the delivery pump is connected to one end of the algae liquid delivery pipeline, the other end of the algae liquid delivery pipeline is connected to the bacteria-algae symbiotic bed, and an algae liquid delivery valve is installed on the algae liquid delivery pipeline.

[0012] Furthermore, the liquid inlet of the algae incubator is communicated with the liquid discharge port of the liquid pump, and the liquid inlet port of the liquid pump is connected to the tailwater pipeline of the fish pond.

[0013] Furthermore, the algae liquid circulation device includes an algae liquid circulation pipe and an algae liquid circulation valve, the algae liquid circulation valve is installed on the algae liquid circulation pipe, one end of the algae liquid circulation pipe is connected to the liquid inlet port of the liquid suction pump, and the other end of the algae liquid circulation pipe is connected to the liquid discharge port of the delivery pump.

[0014] Furthermore, the algae incubator comprises a light-transmitting algae incubation box, wherein a plurality of partitions are distributed in the light-transmitting algae incubation box, and wherein the partitions divide the cavity in the light-transmitting algae incubation box into an algae liquid circuitous channel.

[0015] Furthermore, the light-transmitting algae incubator box is arranged on a bracket, a plurality of air inlets are distributed at the bottom of the light-transmitting algae incubator box, the air inlets are connected to an air input pipeline, a fan is provided on the air input pipeline, and a plurality of exhaust holes are distributed at the top of the light-transmitting algae incubator box.

[0016] Furthermore, the light-transmitting algae incubator is provided with a fresh culture medium adding port.

[0017] Furthermore, the light-transmitting algae incubator is made of glass or resin.

[0018] The beneficial effects of the utility model are:

[0019] 1. Due to the synergistic effect, bacteria and algae form a mutually beneficial symbiotic relationship, which can better purify the quality of tail water than single-algae or bacterial systems. It is an environmentally friendly biological treatment technology.

[0020] 2. The design of multi-stage air intake and multi-stage partition is conducive to the uniform mixing of algal liquid in the photobioreactor, effectively improving the mass transfer performance of the algal liquid and promoting the growth of algal liquid biomass.

[0021] 3. Different from other treatment processes that require external power to supply oxygen, the bacteria-algae symbiotic system uses the carbon dioxide produced by bacteria to degrade organic matter for photosynthesis to produce oxygen, without the need for additional power to supply oxygen. It is a green and low-carbon treatment system.

[0022] 4. The modified filler filled in the bacteria-algae symbiotic bed has a large specific surface area, which is conducive to the attachment of bacteria and algae on the surface of the filler to form a bacteria-algae biofilm system, and can effectively remove pollutants in the tail water.

[0023] 5. This system integrates an algal liquid circulation device and an algal liquid dosing device, with a high degree of automation. Compared with traditional treatment processes, this treatment technology is simple to operate, efficient, low-cost, green and low-carbon, and does not produce secondary pollution. It is an effective way to purify the tail water of aquaculture ponds. Description of the Drawings

[0024] The present utility model will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings:

[0025] Figure 1 It is a schematic structural diagram of the present utility model;

[0026] Figure 2 It is a schematic structural diagram of the bacteria-algae symbiotic bed of the present utility model.

[0027] In the figure: 1. Algae incubator; 2. Algal liquid dosing device; 3. Algal liquid circulation device; 4. Bacteria-algae symbiotic bed; 101. Algal liquid discharge port; 102. Liquid inlet; 103. Liquid pumping pump; 104. Tail water pipeline of aquaculture pond; 105. Transparent algae incubation box; 106. Partition; 107. Support; 108. Air inlet hole; 109. Air input pipeline; 110. Exhaust hole; 111. Fresh culture medium addition port; 201. Algal liquid dosing pipeline; 202. Dosing pump; 203. Algal liquid dosing valve; 301. Algal liquid circulation pipe; 302. Algal liquid circulation valve; 401. Cuboid frame; 402. Modified filler unit; 403. Algal liquid distribution pipe; 404. Cross beam; 405. Rope; 406. Algal liquid discharge port; 407. Left fixed track; 408. Right fixed track; 409. Coupling fastener; 410. Sieve mesh. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward rotation", "reverse rotation", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] As Figure 1 shown, a tail water treatment system for aquaculture ponds includes an algae incubator 1, an algae liquid feeding device 2, an algae liquid circulation device 3, and a bacteria-algae symbiotic bed 4. The algae liquid feeding device 2 feeds the algae liquid in the algae incubator 1 onto the bacteria-algae symbiotic bed 4. The bacteria-algae symbiotic bed 4 is located in the tail water of the aquaculture pond and is used to purify the tail water of the aquaculture pond. The algae liquid circulation device 3 is used to return the algae liquid at the end in the algae incubator 1 to the front end of the algae incubator 1, so that the algae liquid in the algae incubator 1 circulates. The bacteria and algae on the bacteria-algae symbiotic bed 4 form a mutually beneficial symbiotic relationship due to their synergistic effect, and can better achieve the purification of the tail water quality than a single-algae or bacteria system. It is an environmentally friendly biological treatment technology. Different from other treatment processes that require external power to provide oxygen, the bacteria-algae symbiotic system uses the carbon dioxide produced by bacteria to degrade organic matter for photosynthesis to produce oxygen, and does not require additional power to provide oxygen. It is a green and low-carbon treatment system. The modified filler filled in the bacteria-algae symbiotic bed has a large specific surface area, which is beneficial for bacteria and algae to attach to the surface of the filler to form a bacteria-algae biofilm system, and can effectively remove pollutants in the tail water.

[0031] In this embodiment, a plurality of bacteria-algae symbiotic beds 4 are provided, and the algae liquid feeding device 2 feeds the algae liquid in the algae incubator 1 onto the plurality of bacteria-algae symbiotic beds 4.

[0032] The water used in the algae incubator 1 is the tail water of the aquaculture pond, and the algae in the algae incubator 1 uses the residual bait and metabolic products of the aquaculture objects in the tail water of the aquaculture pond as nutrients for its own growth.

[0033] The algae liquid delivery device 2 includes an algae liquid delivery pipeline 201 and a delivery pump 202, the liquid inlet port of the delivery pump 202 is connected to the algae liquid discharge port 101 of the algae incubator 1, the discharge port of the delivery pump 202 is connected to one end of the algae liquid delivery pipeline 201, and the other end of the algae liquid delivery pipeline 201 is connected to the bacteria-algae symbiotic bed 3, and an algae liquid delivery valve 203 is installed on the algae liquid delivery pipeline 201.

[0034] The liquid inlet 102 of the algae incubator 1 is communicated with the liquid discharge port of the liquid pump 103 , and the liquid inlet port of the liquid pump 103 is connected to the tailwater pipeline 104 of the fish pond.

[0035] The algae incubator 1 includes a light-transmitting algae incubator 105, wherein a plurality of partitions 106 are distributed in the light-transmitting algae incubator 105, wherein the partitions 106 divide the cavity in the light-transmitting algae incubator 105 into an algae liquid circuitous channel. The light-transmitting algae incubator 105 is arranged on a bracket 107, and a plurality of air inlets 108 are distributed at the bottom of the light-transmitting algae incubator 105, wherein the air inlet 108 is connected to an air input pipeline 109, and a fan is provided on the air input pipeline, and a plurality of exhaust holes 110 are distributed at the top of the light-transmitting algae incubator 105. The multi-stage air intake and multi-stage partition design of the light-transmitting algae incubator are conducive to uniform mixing of the algae liquid in the photobioreactor, effectively improving the mass transfer performance of the algae liquid, and promoting the growth of the algae liquid biomass. A fresh culture medium addition port 111 is provided on the light-transmitting algae incubator 105.

[0036] The material of the light-transmitting algae incubator 105 is glass or resin, so that the algae can get sufficient light intensity, which is beneficial to the cultivation of the algae.

[0037] This system integrates an algae liquid circulation device and an algae liquid dosing device with a high degree of automation. Compared with traditional treatment processes, this treatment technology is simple to operate, highly efficient, low-cost, green and low-carbon, and does not produce secondary pollution. It is an economical and effective way to purify the tail water of fish ponds.

[0038] The algae liquid circulation device 3 includes an algae liquid circulation pipe 301 and an algae liquid circulation valve 302, wherein the algae liquid circulation valve 302 is installed on the algae liquid circulation pipe 301, one end of the algae liquid circulation pipe 301 is connected to the liquid inlet port of the liquid suction pump 103, and the other end of the algae liquid circulation pipe 301 is connected to the liquid discharge port of the delivery pump 202.

[0039] like Figure 2As shown in the figure, the bacteria-algae symbiotic bed 4 includes a cuboid frame 401, a modified filler unit 402, and an algal liquid distribution pipe 403. A screen 410 is provided on the peripheral side walls of the cuboid frame 401. Cross beams 404 are distributed on the top of the cuboid frame 401. The modified filler unit 402 is fixedly distributed on a rope 405. The rope 405 is located inside the cuboid frame 401 and the upper end of the rope 405 is fixed to the cross beam 404 mentioned above. The algal liquid distribution pipe 403 is placed flat at the bottom inside the cuboid frame 401. A plurality of upward-opening algal liquid discharge ports 406 are distributed on the algal liquid distribution pipe 403. One end of the algal liquid distribution pipe 403 is communicated with the algal liquid delivery pipeline 201 of the algal liquid delivery device 2. The modified filler unit 402 is used to carry bacteria and algae.

[0040] The bacteria-algae symbiotic bed 4 further includes a vertically installed left fixed track 407 and a right fixed track 408. The lower ends of the left fixed track 407 and the right fixed track 408 are fixed to the bottom of the aquaculture pond. The upper ends of the left fixed track and the right fixed track are above the water surface of the aquaculture pond. Both sides of the cuboid frame 401 are installed on the left fixed track 407 and the right fixed track 408 through coupling fasteners 409. When it is necessary to replace the modified filler unit, the cuboid frame is pulled upward. The cuboid frame slides upward along the left fixed track and the right fixed track until the top of the cuboid frame is exposed above the water surface. Then the rope is removed. Then the rope with the newly distributed modified filler unit is hung on the cross beam. Then the cuboid frame is reset, and the replacement of the modified filler is completed.

[0041] The function of the screen is, on the one hand, to isolate large particles of impurities in the fish pond from entering the symbiotic bed and causing blockage, allowing the tail water to freely and continuously flow through the symbiotic bed; on the other hand, it is beneficial for bacteria and algae to gather in the symbiotic bed, not easy to disperse, forming a certain concentration of bacteria and algae, and being more likely to grow on the filler.

[0042] Working principle:

[0043] Biological treatment technology is a green and low-cost treatment technology. Biological treatment technology mainly uses the self-active metabolic absorption of microorganisms to achieve the purification effect of degrading pollutants in water bodies. The feed put in during the aquaculture process and the excreta of the aquaculture objects mainly exist in the form of substances such as carbohydrates, proteins, and lipids containing elements such as carbon, nitrogen, and phosphorus, and have good biodegradability, especially suitable for biological treatment technology. Compared with physical and chemical treatment technologies, biological treatment technology is simple to operate, has high efficiency, and low cost, and is an economically effective technology for treating the tail water of aquaculture ponds.

[0044] The bacteria-algae symbiotic technology has the characteristics of high treatment efficiency, low cost, and no secondary pollution. It is an environmentally friendly biological treatment technology with broad application prospects for the treatment of aquaculture pond tail water. In the bacteria-algae symbiotic system, bacteria and algae work together to form a mutually beneficial symbiotic system. Bacteria can utilize the organic matter in the aquaculture tail water and degrade it into carbon dioxide and water. Algae use the carbon dioxide released by bacteria as a carbon source for photosynthesis, and the oxygen produced can increase the dissolved oxygen in the pond tail water, which is beneficial to the growth and metabolism of aerobic bacteria. Aerobic bacteria degrade the tail water pollutants, creating a water environment more conducive to the growth of microalgae. At the same time, algae itself contains rich nutrients and is the best natural bait for fry, shrimp fry, and crab fry, serving as a supplement to the feed for cultured animals. Therefore, using the bacteria-algae symbiotic technology to regulate the quality of aquaculture pond tail water can also improve the structure of the pond ecosystem. It can not only maintain the water transparency but also obtain good natural bait, making it a green and sustainable bioremediation technology.

[0045] In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A fish pond tailwater treatment system, characterized in that: It comprises an algae incubator, an algae liquid delivery device and a bacteria-algae symbiotic bed. The algae liquid delivery device delivers the algae liquid in the algae incubator to the bacteria-algae symbiotic bed. The bacteria-algae symbiotic bed is located in the tail water of the fish pond for purifying the tail water of the fish pond. The algae incubator comprises a light-transmitting algae incubator box. A plurality of partitions are distributed in the light-transmitting algae incubator box. The partitions divide the cavity in the light-transmitting algae incubator box into an algae liquid circuitous channel.

2. The fish pond tailwater treatment system according to claim 1, characterized in that: The water used in the algae incubator is tail water from a fish pond, and the algae in the algae incubator use the residual bait and metabolic products of the cultured objects in the tail water of the fish pond as nutrients for their own growth.

3. The fish pond tailwater treatment system according to claim 1, characterized in that: It also includes an algae liquid circulation device, which is used to return the algae liquid at the end of the algae incubator to the front end of the algae incubator, so that the algae liquid in the algae incubator circulates.

4. The fish pond tailwater treatment system according to any one of claims 1 to 3, characterized in that: The algae liquid delivery device includes an algae liquid delivery pipeline and a delivery pump, the liquid inlet port of the delivery pump is connected to the algae liquid discharge port of the algae incubator, the discharge port of the delivery pump is connected to one end of the algae liquid delivery pipeline, the other end of the algae liquid delivery pipeline is connected to the bacteria-algae symbiotic bed, and an algae liquid delivery valve is installed on the algae liquid delivery pipeline.

5. The fish pond tailwater treatment system according to claim 4, characterized in that: The liquid inlet of the algae incubator is communicated with the liquid discharge port of the liquid pump, and the liquid inlet port of the liquid pump is connected to the tail water pipeline of the fish pond.

6. The fish pond tailwater treatment system according to claim 3, characterized in that: The algae liquid circulation device includes an algae liquid circulation pipe and an algae liquid circulation valve, the algae liquid circulation valve is installed on the algae liquid circulation pipe, one end of the algae liquid circulation pipe is connected to the liquid inlet port of the liquid suction pump, and the other end of the algae liquid circulation pipe is connected to the liquid discharge port of the delivery pump.

7. The fish pond tailwater treatment system according to claim 1, characterized in that: The light-transmitting algae incubator is arranged on a bracket, a plurality of air inlets are distributed on the bottom of the light-transmitting algae incubator, the air inlets are connected to an air input pipeline, a fan is arranged on the air input pipeline, and a plurality of exhaust holes are distributed on the top of the light-transmitting algae incubator.

8. The fish pond tailwater treatment system according to claim 1, characterized in that: The light-transmitting algae incubator is provided with a fresh culture medium adding port.

9. The fish pond tailwater treatment system according to claim 1, characterized in that: The light-transmitting algae incubator is made of glass or resin.

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