Novel leech recirculating aquaculture system

Abstract

The utility model relates to the technical field of leech culture, and discloses a novel leech recirculating aquaculture system which comprises a culture pond, a microfilter used for reducing suspended solids in a water body and reducing the concentration of the suspended solids is arranged on one side of the culture pond, a water storage pond is arranged on one side of the microfilter, and a water pump in the water storage pond pumps water into a decoloration adsorption tank; a pipeline ultraviolet sterilization device for ultraviolet sterilization is arranged on one side of the adsorption tank, a fourth water outlet is formed in the outer wall, away from the water inlet, of the pipeline ultraviolet sterilization device, and a nitrification biological filter tower used for reducing the concentration of ammonia nitrogen and nitrite in water flow is arranged on one side of the pipeline ultraviolet sterilization device. The leech culture device can filter, decolorize, sterilize and biologically filter a red water body with residual food residues (generally pig blood) in water flow, so that the concentration of ammonia nitrogen and nitrite in the water body is reduced, the transparency of the water body is improved, the oxygen concentration of the water body is increased, and the carbon dioxide concentration of the water body is reduced, thereby reducing the risk of leech culture. And the survival rate of leech culture is improved.

Description

Technical Field

[0001] This application relates to the technical field of leech farming, and particularly to a new type of circulating water leech farming system. Background Art

[0002] Leeches, also known as medical leeches or bloodsuckers. A genus of the family Hirudinidae in the order Gnathobdellida, aquatic species. Originally only distributed in Europe, Asia, and Africa, and later introduced to the Americas for medical use. Most of the body is medium-sized, and there are usually longitudinal stripes on the back. The male and female pores are separated by 5 rings. Both the anterior and posterior suckers are well-developed. Each of the 3 jaws has a row of sharp spines, about 35 - 100. There are no salivary gland papillae on the jaws, or only some very small papillae. Hirudo nipponia is the most widely distributed and most harmful blood-sucking leech in China, with a body length generally of 30 - 60 mm and a body width of 4 - 8.5 mm. The body is long and narrow, slightly cylindrical, and slightly flattened dorsoventrally. The back is yellowish green or yellowish brown, with 5 yellowish white longitudinal stripes, the middle one is wider, and there are dense dark brown fine spots on both sides of the longitudinal stripes. The ventral surface is dark gray or light yellowish brown, without markings. When a leech sucks blood, it first sucks firmly with the sucker, and then saws open a "Y"-shaped wound with the teeth on the jaw.

[0003] Some leeches belong to the blood-sucking type, such as Hirudo nipponia and Poecilobdella manillensis.

[0004] The patent network publication number "CN216961180U" discloses an intelligent leech farming device, including a farming pond. A circulating water pipe is provided below the farming pond... A connection mechanism is provided in the connecting plate. Through the coordinated setting of the circulating water pipe, sewage pipe, biochemical pond, circulating water pump, return pipe, water extraction pipe, sewage extraction pipe, oxidation pond, ozone disinfection pond, and filtration pond, during use, it can filter the pollutants generated during the leech farming process in the farming pond and maintain the water circulation. During the farming process, it is not necessary to replace a large amount of water in the farming pond, avoiding the batch death of leeches due to water replacement. This patent provides an oxidation pond for decolorization. The common oxidant in the oxidation pond is ozone, and ozone is prone to oxidizing bromide ions in the circulating water farming system to produce the potential carcinogen bromate ions.

[0005] The patent network publication number "CN219409423U" provides a biological filtration device filled with foamed polypropylene. This device can not only reduce ammonia nitrogen and nitrite, but also improve the water transparency, increase the oxygen concentration, and reduce the carbon dioxide concentration.

[0006] With respect to the above-mentioned related technologies, the inventor believes that leeches play a huge role in medicine. Currently, artificial breeding of leeches has become a mature industry. Leeches are relatively sensitive to the external environment during their growth. During the decolorization process in the oxidation pond, the common oxidant in the oxidation pond is ozone, which can easily oxidize bromide ions in the circulating water culture system to produce potential carcinogens, bromate ions, which can easily accumulate in the patient's body through leeches, posing a serious health threat to the patient. In addition, the improvement of water quality is conducive to improving the survival rate of leech farming. Therefore, a new leech circulating water culture system is proposed to solve the above problems. Utility Model Content

[0007] In order to solve the potential threat of carcinogens brought to the system by the existing leech recirculating water culture system, this patent provides a new leech recirculating water culture system that does not produce carcinogens such as bromate, and reduces ammonia nitrogen and nitrite in the water, improves water transparency, increases dissolved oxygen and removes carbon dioxide.

[0008] The present application provides a novel leech circulating water culture system.

[0009] The novel leech circulating water culture system provided in this application adopts the following technical solution:

[0010] A novel leech circulating water breeding system comprises a breeding pool, wherein a first water outlet is provided on a side outer wall of the breeding pool, a microfilter for reducing suspended matter in water and lowering the concentration of suspended matter is provided on one side of the breeding pool, and the breeding pool is connected to a water inlet of the microfilter through the first water outlet, a second water outlet is provided on a side outer wall of the microfilter, a water reservoir is provided on one side of the microfilter, and the second water outlet is connected to the water reservoir, a water pump is fixedly connected in the water reservoir, an adsorption tank for water flow decolorization is provided on one side of the water reservoir, and the water pump pumps water from the water reservoir into the adsorption tank, and a pipeline ultraviolet sterilization device for ultraviolet sterilization is provided on one side of the adsorption tank A third water outlet is provided on the outer wall of the adsorption tank located on one side of the pipeline ultraviolet sterilization device, and the adsorption tank is connected with the water inlet of the pipeline ultraviolet sterilization device through the third water outlet, a fourth water outlet is provided on the outer wall of the pipeline ultraviolet sterilization device away from the water inlet, a nitrification biofilter tower for reducing the concentration of ammonia nitrogen and nitrite in the water flow is arranged on one side of the pipeline ultraviolet sterilization device, and the pipeline ultraviolet sterilization device is connected with the water inlet of the nitrification biofilter tower through the fourth water outlet, a circulating water inlet is provided on the outer wall of the breeding pond away from the first water outlet, a fifth water outlet is provided on the side outer wall of the nitrification biofilter tower, and the circulating water inlet is connected with the fifth water outlet.

[0011] Preferably, a sewage outlet is provided at the bottom of the culture pond, and a sewage net is provided above the sewage outlet.

[0012] Preferably, the internal filter material of the adsorption tank is an activated carbon filter material.

[0013] Preferably, the nitrifying biological filter tower is internally equipped with biological filter media.

[0014] In summary, the present application includes the following beneficial technical effects:

[0015] 1. This system is provided with a breeding pond, a microfilter, a water storage tank, a water pump, an adsorption tank, a pipeline ultraviolet sterilization device, and a nitrifying biological filter tower. The microfilter reduces suspended solids and thus lowers the suspended solid concentration. The adsorption tank removes the color of the red-stained water body. Compared with the prior art, it can perform activated carbon decolorization treatment on the water body stained by residual food residues in the water body. Compared with oxidation decolorization treatments such as ozone, it has little impact on the nitrification efficiency of the biofilm and does not produce carcinogenic bromate ions.

[0016] 2. The water body bacteria are sterilized by the ultraviolet sterilization device, and finally the ammonia nitrogen and nitrite concentrations are reduced, sewage is intercepted, the oxygen concentration in the water body is increased, and the carbon dioxide concentration is removed through the nitrifying biological filter tower, so that the water body is purified and recycled back to the breeding pond. Compared with the prior art, in addition to reducing the concentrations of ammonia nitrogen and nitrite, it can also improve the transparency of the water body, increase oxygen, and remove carbon dioxide, thereby improving the water quality, reducing the risk of leech breeding, and increasing the survival rate of water quality breeding. Description of the Drawings

[0017] Figure 1 is the overall schematic diagram of the application embodiment;

[0018] Figure 2 is the three-dimensional top view schematic diagram of the application embodiment;

[0019] Figure 3 is the flow chart of the novel leech circulating water breeding system of the application embodiment.

[0020] Description of the Reference Numerals:

[0021] 101, breeding pond; 201, microfilter; 301, water pump; 302, water storage tank; 401, adsorption tank; 501, pipeline ultraviolet sterilization device; 601, nitrifying biological filter tower;

[0022] 102, first water outlet; 103, circulating water outlet; 104, sewage outlet; 105, sewage net; 202, second water outlet; 402, third water outlet; 502, fourth water outlet; 602, fifth water outlet. Detailed Embodiments

[0023] The following is a further detailed description of the present application in conjunction with the attached Figures 1-3 drawings.

[0024] An embodiment of the present application discloses a new type of circulating water aquaculture system for leeches. Refer to Figures 1-3, a new type of leech recirculating aquaculture system, including a culture pond 101. A first water outlet 102 is provided on the side outer wall of the culture pond 101. A microfilter 201 for reducing water body suspended solids and lowering the suspended solid concentration is arranged on one side of the culture pond 101. The water flow is filtered and purified by the microfilter 201, so as to achieve the effect of reducing water body suspended solids and lowering the suspended solid concentration. At the same time, the microfilter 201 is preferably of the WLJ-800 model, and the culture pond 101 is communicated with the water inlet of the microfilter 201 through the first water outlet 102. By connecting the culture pond 101 with the microfilter 201, it is convenient for the water flow in the culture pond 101 to enter the microfilter 201. A second water outlet 202 is provided on the side outer wall of the microfilter 201. A water storage tank 302 is arranged on one side of the microfilter 201, and the second water outlet 202 is communicated with the water storage tank 302. A water pump 301 is fixedly connected in the water storage tank 302, so that the water in the microfilter 201 flows into the water storage tank 302 by gravity, and then the water is conveyed to an adsorption tank 401 by the water pump 301. An adsorption tank 401 for water flow decolorization is arranged on one side of the water storage tank 302, and the adsorption tank 401 is communicated with the water inlet of the water storage tank 302 through the water pump 301. The adsorption tank 401 is preferably of the ZRHXTGLQ-50 model. Since the aquaculture water flow is contaminated by the pig blood, the food for leeches, the water flow turns red. The color of the water flow is decolorized by the adsorption tank 401 to improve the transparency of the water flow. A pipeline ultraviolet sterilization device 501 for ultraviolet sterilization is arranged on one side of the adsorption tank 401. The pipeline ultraviolet sterilization device 501 is preferably of the UVC-85-1 model. A third water outlet 402 is provided on the outer wall of the adsorption tank 401 on the side of the pipeline ultraviolet sterilization device 501, and the adsorption tank 401 is communicated with the water inlet of the pipeline ultraviolet sterilization device 501 through the third water outlet 402. The residual bacteria in the water flow are removed by the pipeline ultraviolet sterilization device 501 to improve the water quality of the water flow. A fourth water outlet 502 is provided on the outer wall of the pipeline ultraviolet sterilization device 501 facing away from the water inlet. A nitrifying biological filter tower 601 for reducing the ammonia nitrogen and nitrite concentration in the water flow is arranged on one side of the pipeline ultraviolet sterilization device 501. The nitrifying biological filter tower 601 is preferably of the BISO350 model. The ammonia nitrogen and nitrite concentration in the water flow is reduced by the nitrifying biological filter tower 601, thereby improving the water quality. And the pipeline ultraviolet sterilization device 501 is communicated with the water inlet of the nitrifying biological filter tower 601 through the fourth water outlet 502. The water flow is conveyed to the nitrifying biological filter tower 601 through the fourth water outlet 502. A circulating water port 103 is provided on the outer wall of the culture pond 101 facing away from the first water outlet 102. A fifth water outlet 602 is provided on the side outer wall of the nitrifying biological filter tower 601, and the circulating water port 103 is communicated with the fifth water outlet 602. By connecting the circulating water port 103 with the fifth water outlet 602, the filtered water re-enters the culture pond 101, thus forming a water cycle, which is convenient for improving the water quality of the aquaculture water body.

[0025] A sewage outlet 104 is provided at the bottom of the breeding pond 101, and a sewage net 105 is sleeved above the sewage outlet 104. By opening and closing the sewage outlet 104, it is convenient to discharge the sewage in the breeding pond 101, and the sewage net 105 prevents leeches from being discharged to the outside.

[0026] The internal filter material of the adsorption tank 401 uses activated carbon filter material. Through activated carbon, due to its micropores with a pore diameter greater than 1 nm, it has excellent effects for applications such as decolorization and purification.

[0027] The nitrifying biological filter tower 601 is internally filled with biological filter media. It should be noted that the biological filter media is composed of autoclave foamed polypropylene and / or extruded foamed polypropylene.

[0028] The implementation principle of a new type of leech circulating water breeding system in the embodiment of the present application is as follows: The water in the breeding pond 101 is discharged to the microfilter 201 through the first water outlet 102, so that the microfilter 201 filters some impurities and suspended matters in the water flow, thereby reducing the concentration of suspended matters in the water flow. Then, the activated carbon material in the adsorption tank 401 dehydrates the color of the pig blood eaten by leeches in the water flow, thereby improving the purification degree of the water flow. Then, the water is pumped to the pipeline ultraviolet sterilization device 501, so that the pipeline ultraviolet sterilization device 501 performs ultraviolet sterilization on the water flow, reducing the presence of bacteria in the water flow and further improving the purification degree of the water flow. Finally, through the nitrifying biological filter tower 601, the water spray on the upper part of the nitrifying biological filter tower 601 reaches the biological filter media, oxygen is supplied by pressurized air from below, and it trickles in layers to create an optimal breeding environment for nitrifying bacteria. The bottom grid is an anaerobic chamber, immersed in water, suitable for the film formation and reproduction of denitrifying bacteria. Thus, the denitrifying bacteria culture chamber in the lower part can turn the nitrates generated by the upper-layer bacteria into nitrogen and discharge it out of the water body, ultimately reducing the concentrations of ammonia nitrogen and nitrite. Finally, it is connected to the circulating water inlet 103 of the breeding pond 101, so that the treated water flow enters the breeding pond 101, forming a leech circulating water breeding system.

[0029] Finally, the following points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the described object changes, the relative position relationship may change;

[0030] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0031] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0032] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A novel leech circulating water culture system, comprising a culture pond (101), characterized in that: The side outer wall of the culture pond (101) is provided with a first water outlet (102), and a microfilter (201) for reducing suspended matter in the water body and lowering the concentration of suspended matter is arranged on one side of the culture pond (101), and the culture pond (101) is connected to the water inlet of the microfilter (201) through the first water outlet (102), and a second water outlet (202) is arranged on the side outer wall of the microfilter (201), and a water reservoir is arranged on one side of the microfilter (201). (302), and the second water outlet (202) is connected to the water reservoir (302), a water pump (301) is fixedly connected to the water reservoir (302), an adsorption tank (401) for water decolorization is arranged on one side of the water reservoir (302), and the water pump (301) pumps water from the water reservoir (302) into the adsorption tank (401), and a pipeline ultraviolet sterilization device (501) for ultraviolet sterilization is arranged on one side of the adsorption tank (401), and the adsorption tank (401) is provided with a water pump (301) for water decolorization. The outer wall of the auxiliary tank (401) located on one side of the pipeline ultraviolet sterilization device (501) is provided with a third water outlet (402), and the adsorption tank (401) is connected to the water inlet of the pipeline ultraviolet sterilization device (501) through the third water outlet (402), and the outer wall of the pipeline ultraviolet sterilization device (501) away from the water inlet is provided with a fourth water outlet (502), and one side of the pipeline ultraviolet sterilization device (501) is provided with a device for reducing ammonia nitrogen and nitrite in the water flow. A concentration nitrification biological filter tower (601) is provided, and the pipeline ultraviolet sterilization device (501) is connected to the water inlet of the nitrification biological filter tower (601) through a fourth water outlet (502), a circulating water inlet (103) is provided on the outer wall of the culture pond (101) away from the first water outlet (102), and a fifth water outlet (602) is provided on the side outer wall of the nitrification biological filter tower (601), and the circulating water inlet (103) is connected to the fifth water outlet (602).

2. A novel leech circulating water culture system according to claim 1, characterized in that: A sewage outlet (104) is provided at the bottom of the culture pond (101), and a sewage outlet net (105) is provided above the sewage outlet (104).

3. A novel leech circulating water culture system according to claim 1, characterized in that: The internal filter material of the adsorption tank (401) is activated carbon filter material.

4. A novel leech circulating water culture system according to claim 1, characterized in that: The nitrification biological filter tower (601) is filled with biological filter material.

Images