Yellow River Indigenous Fish Aquatic Ecological Environment Simulation Domestication and Cultivation System

Abstract

The invention provides a simulation domestication and cultivation system for the water ecological environment of native fish in the Yellow River, which includes a circulating domestication pool, a water purification device, a water regulation device and a sand regulation device arranged in the circulating domestication pool. The circulating domestication pool includes a slow-flow area and a rapid-flow area. The rapid-flow area is connected end to end with the slow-flow area, and the terrain of the water inlet of the rapid-flow area is higher than that of its water outlet, and the terrain of the water outlet of the rapid-flow area is higher than that of the slow-flow area. The water regulation device is used to regulate the dissolved oxygen content and temperature of the water in the circulating domestication pool. The water purification device purifies the water in the slow-flow area and discharges the purified water to the rapid-flow area, so that the water flows rapidly towards the slow-flow area under the action of the terrain difference. The sand regulation device is arranged at the water inlet of the rapid-flow area and is used to release sediment into the water flow to adjust the sediment content in the water flow, simulate the water ecological environment of the Yellow River, make the water quality and water flow characteristics in the circulating domestication pool fully approach the natural water area ecological environment of the Yellow River, improve the adaptability of protected fish to the water environment, and reduce the mortality rate.

Description

Technical Field

[0001] The present invention relates to the technical field of water ecological environment simulation domestication and cultivation, and specifically relates to a water ecological environment simulation domestication and cultivation system for Yellow River native fish. Background Art

[0002] The Yellow River is the second largest river in China, and it breeds a very rich variety of fish. However, due to factors such as the recent drying up, overfishing, and water conservancy construction of the Yellow River, the ecological environment of the Yellow River Basin has become very fragile, and the fish resources have decreased sharply. Among them, species such as Coreius septentrionalis, Rhinogobio nasutus, Silurus lanzhouensis, and Gobio huanghensis are in an endangered state. To better enable endangered species to reproduce effectively, currently, after artificial domestication and breeding, they are released. However, because protected fish such as Coreius septentrionalis and Rhinogobio nasutus have relatively high requirements for the water environment, and the water environment of the existing artificial domestication ponds is quite different from the Yellow River ecological water environment, protected fish such as Coreius septentrionalis and Rhinogobio nasutus have poor adaptability to the water environment of the artificial domestication ponds. During the process of artificial domestication and breeding, there are problems such as high mortality and difficulty in domestication. Summary of the Invention

[0003] In view of this, it is necessary to provide a water ecological environment simulation domestication and cultivation system for Yellow River native fish that can effectively improve the environmental adaptability and survival rate of protected fish.

[0004] A water ecological environment simulation domestication and cultivation system for Yellow River native fish includes a circulating domestication water pool, a water purification device, a water regulation device, and a sand regulation device arranged in the circulating domestication water pool. The circulating domestication water pool includes a slow-flow area and a rapid-flow area. The water inlet and outlet of the rapid-flow area are connected end to end with the slow-flow area to form an annular domestication water channel. Moreover, the terrain of the water inlet of the rapid-flow area is higher than its water outlet, and the terrain of the water outlet of the rapid-flow area is higher than that of the slow-flow area. The water purification device and the water regulation device are arranged in the slow-flow area. The water regulation device is used to regulate the dissolved oxygen and temperature of the water in the circulating domestication water pool. The water purification device purifies the water in the slow-flow area and discharges the purified water to the water inlet of the rapid-flow area, so that the water flows rapidly along the rapid-flow area to the slow-flow area under the action of the terrain difference. The sand regulation device is arranged at the water inlet of the rapid-flow area and is used to release sediment into the water flow, and the sediment flows along the domestication water channel under the scouring of the water flow discharged by the water purification device to regulate the sediment content in the water flow, simulate the Yellow River water ecological environment, and be used for the domestication and cultivation of Yellow River native fish.

[0005] Preferably, the water purification device includes a vertical sedimentation tank, a first drain pipe and a first circulation pump. The vertical sedimentation tank is arranged on one side or above the circulating domestication pool. One end of the first drain pipe is connected to the water inlet of the vertical sedimentation tank, and the other end is arranged at the center of the bottom of the water in the slow flow area. The first circulation pump is arranged on the first drain pipe to pump the water and sediment in the slow flow area into the vertical sedimentation tank for purification. A water diversion pipe is arranged at the water purification outlet of the vertical sedimentation tank, and the drainage end of the water diversion pipe is arranged at the water inlet of the rapid flow area to divert the purified water to the rapid flow area.

[0006] Preferably, the water purification device further includes a floating matter filter, a second drain pipe and a second circulation pump. The floating matter filter is arranged under the water surface at the center of the slow flow area, and the water inlet of the floating matter filter is close to the water surface in the slow flow area to collect and filter the floating matter on the water surface. One end of the second drain pipe is connected to the water outlet of the floating matter filter, and the other end is arranged at the water inlet of the rapid flow area. The second circulation pump is arranged on the second drain pipe to divert the filtered water to the rapid flow area.

[0007] Preferably, the water purification device further includes a flow-through ultraviolet sterilizer. The flow-through ultraviolet sterilizer is arranged on the water diversion pipe or the second drain pipe to sterilize the water introduced into the rapid flow area.

[0008] Preferably, the water regulation device includes an aeration pump, an aeration pipe, a heating rod, a cooling coil and a refrigerator. The aeration pump is arranged outside the circulating domestication pool. The aeration pipe is arranged at the bottom of the water in the slow flow area. The aeration pump is connected to the aeration pipe to aerate the circulating domestication pool and adjust the dissolved oxygen content of the water. The heating rod is arranged in the slow flow area to heat the water. The refrigerator is arranged outside the circulating domestication pool. The cooling coil is coiled around the outer wall of the second drain pipe and is close to the drain outlet. Both ends of the cooling coil are connected to the refrigerating end of the refrigerator, and the cold source is conducted through the cooling coil to cool the water discharged from the second drain pipe to adjust the water temperature.

[0009] Preferably, the side walls on both sides of the rapid flow area extend in a zigzag shape with irregular concavities and convexities, so that multiple backwater bays are formed during the flow of the water to simulate the characteristics of the rapid flow channel of the Yellow River.

[0010] Preferably, the side walls of the slow flow area and the rapid flow area are both made of rammed loess structure, and irregularly sized rocks are arranged at intervals at the bottom of the rapid flow area to simulate the submerged reefs of the Yellow River bed.

[0011] Preferably, the sand regulating device includes a sand box for containing sediment, a sand discharging scraper, and a driving machine. The sand box is erected above the water inlet of the rapid flow area. A sand discharging hole is opened at the bottom of the sand box. The sand discharging scraper is arranged on the sand discharging hole. The driving machine is shaft-connected to the sand discharging scraper and drives the sand discharging scraper to rotate, scraping the sediment in the sand box to discharge from the sand discharging hole and releasing sediment into the water flow to adjust the sediment content in the water flow.

[0012] Preferably, supplementary light lamps are further arranged around the slow flow area and the rapid flow area for supplementing light to the circulating domestication pool.

[0013] The present invention adopts the above technical solutions, and its beneficial effects are as follows: By connecting the water inlet and the water outlet of the rapid flow area with the slow flow area end to end, a circulating domestication pool for simulating the Yellow River water ecological environment is formed. Moreover, the terrain of the water inlet of the rapid flow area is higher than its water outlet, and the terrain of the water outlet of the rapid flow area is higher than that of the slow flow area. A water purification device, a water regulation device, and a sand regulation device are arranged in the circulating domestication pool. The water regulation device is used to adjust the dissolved oxygen content and temperature of the water in the circulating domestication pool. The water purification device purifies the water in the slow flow area and discharges the purified water to the water inlet of the rapid flow area, so that the water flow rapidly flows along the rapid flow area to the slow flow area under the action of the terrain difference. The sand regulation device is arranged at the water inlet of the rapid flow area for releasing sediment into the water flow, and the sediment flows along the domestication water channel under the scouring of the water flow discharged by the water purification device to adjust the sediment content in the water flow. The water quality in the circulating domestication pool is adjusted by the water purification device, the water regulation device, and the sand regulation device, and the terrain difference between the rapid flow area and the slow flow area is utilized to fully simulate the water flow environment characteristics of the Yellow River, so that the water quality and water flow characteristics in the circulating domestication pool are fully close to the natural water area ecological environment of the Yellow River, improving the adaptability of protected fish to the water environment of the circulating domestication pool and reducing the mortality rate. Moreover, after the protected fish bred by this domestication and cultivation system are released, their adaptability to the natural water area of the Yellow River is better and the survival rate is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the planar structure schematic diagram of the present invention.

[0015] Figure 2 is the axonometric structure schematic diagram of the present invention.

[0016] Figure 3 is Figure 2 the partial enlarged schematic diagram at A in

[0017] In the figure: slow flow area 1, rapid flow area 2, water purification device 3, water regulation device 4, sediment regulation device 5, vertical sedimentation tank 31, first drain pipe 32, first circulation pump 33, floating matter filter 34, second drain pipe 35, second circulation pump 36, bell mouth 37, flow-through ultraviolet sterilizer 38, water inlet pipe 39, aeration pump 41, aeration pipe 42, heating rod 43, cooling coil 44, refrigerator 45, rock 21, shoal 22, aquatic plant 23, sand box 51, sand discharge scraper 52, drive machine 53, supplementary light 6. Specific embodiments

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Please refer to Figure 1 The embodiments of the present invention provide a simulated domestication and cultivation system for the water ecological environment of native Yellow River fish, including a circulating domestication water tank, a water purification device 3, a water regulation device 4, and a sediment regulation device 5 arranged in the circulating domestication water tank. The circulating domestication water tank includes a slow flow area 1 and a rapid flow area 2. The water inlet and outlet of the rapid flow area 2 are connected end to end with the slow flow area 1 to form an annular domestication water channel. Moreover, the terrain of the water inlet of the rapid flow area 2 is higher than its water outlet, and the terrain of the water outlet of the rapid flow area 2 is higher than that of the slow flow area 1. The water purification device 3 and the water regulation device 4 are arranged in the slow flow area 1. The water regulation device 4 is used to adjust the dissolved oxygen content and temperature of the water in the circulating domestication water tank. The water purification device 3 purifies the water in the slow flow area 1 and discharges the purified water to the water inlet of the rapid flow area 2, so that the water flows rapidly along the rapid flow area 2 towards the slow flow area 1 under the action of the terrain difference. The sediment regulation device 5 is arranged at the water inlet of the rapid flow area 2 and is used to release sediment into the water flow, and the sediment is washed by the water flow discharged by the water purification device 3 to flow along the domestication water channel, so as to adjust the sediment content in the water flow and simulate the Yellow River water ecological environment for domesticating and cultivating native Yellow River fish.

[0020] Specifically, the circular domestication pool is of a circular structure. One end of the circular domestication pool is wider and deeper, causing the water flow to be slower and forming a slow-flow area 1. The rapid-flow area 2 is an elongated water channel with a U-shaped structure, which is narrower and shallower compared to the slow-flow area 1. The two ends of the rapid-flow area 2 are respectively an inlet and an outlet. The inlet and outlet of the rapid-flow area 2 are connected end to end with the slow-flow area 1 to form a circular domestication water channel. The water purification device 3 and the water regulation device 4 are arranged in the slow-flow area 1. The water purification device 3 is used to filter and purify the water in the slow-flow area 1 and discharge the purified water to the inlet of the rapid-flow area 2. The terrain of the inlet of the rapid-flow area 2 is higher than that of its outlet, and the terrain of the outlet of the rapid-flow area 2 is higher than that of the slow-flow area 1. After the water in the slow-flow area 1 is introduced into the rapid-flow area 2 by the water purification device 3, the water rapidly flows along the elongated water channel of the rapid-flow area 2 under the action of the terrain difference and flows back into the slow-flow area 1 from the outlet of the rapid-flow area 2. The terrain difference is used to make the water flow in the rapid-flow area 2 relatively fast, so as to simulate the characteristics of the rapid-flow river channel of the Yellow River. The water regulation device 4 can adjust the dissolved oxygen and temperature of the water in the circular domestication pool according to the temperature and dissolved oxygen of the Yellow River water, so as to simulate the Yellow River water environment. The sand regulation device 5 is arranged at the inlet of the rapid-flow area 2 and is used to release sediment into the water flow, and the sediment is washed by the water flow discharged by the water purification device 3 to flow along the domestication water channel, so as to adjust the sediment content in the water flow and simulate the sediment water environment of the Yellow River.

[0021] Please refer to Figure 1 or Figure 2 , the water purification device 3 includes a vertical sedimentation tank 31, a first drain pipe 32 and a first circulation pump 33. The vertical sedimentation tank 31 is arranged on one side or above the circular domestication pool. One end of the first drain pipe 32 is connected to the inlet of the vertical sedimentation tank 31, and the other end is arranged at the center of the bottom of the water in the slow-flow area 1. The first circulation pump 33 is arranged on the first drain pipe 32 to pump the water and sediment in the slow-flow area 1 into the vertical sedimentation tank 31 for purification. A water diversion pipe 39 is arranged at the water purification outlet of the vertical sedimentation tank 31, and the drainage end of the water diversion pipe 39 is arranged at the inlet of the rapid-flow area 2. The water in the slow-flow area 1 is diverted to the rapid-flow area 2 by the water diversion pipe 39 after being sedimented and purified by the vertical sedimentation tank 31. The sediment at the bottom of the water in the slow-flow area 1 can be cleaned through the first drain pipe 32. In order to make the sediment in the water in the slow-flow area 1 gather towards the center of the bottom of the water, so as to be sucked into the vertical sedimentation tank 31 by the first drain pipe 32 for separation and purification, the shape of the slow-flow area 1 is circular or quasi-circular. The outlet of the rapid-flow area 2 is tangentially connected to the inlet of the slow-flow area 1, so that the water flowing into the slow-flow area 1 forms a swirl after entering the slow-flow area 1, which can make the sediment in the water gradually gather towards the center of the bottom of the water in the slow-flow area 1.

[0022] Further, the water purification device 3 further includes a floating matter filter 34, a second drain pipe 35, and a second circulation pump 36. The floating matter filter 34 is disposed below the water surface at the center of the slow flow area 1. The floating matter filter 34 is a channel with a filter net. An upwardly flared bell mouth 37 is provided at the water inlet of the floating matter filter 34. The bell mouth 37 is close to the water surface. One end of the second drain pipe 35 is connected to the water outlet of the floating matter filter 34, and the other end is disposed at the water inlet of the rapid flow area 2. The second circulation pump 36 is disposed on the second drain pipe 35. Floating matters floating on the water surface will gather towards the center of the slow flow area 1 under the action of the swirl, and enter the bell mouth 37 along with the water flow. The floating matters are filtered by the filter net, and the filtered water flow is drawn towards the rapid flow area 2 along the second drain pipe 35 under the suction of the second circulation pump 36.

[0023] Further, the water purification device 3 further includes a flow-through ultraviolet sterilizer 38. The flow-through ultraviolet sterilizer 38 is disposed on the water inlet pipe 39 or the second drain pipe 35 to sterilize the water introduced into the rapid flow area 2.

[0024] Please refer to Figure 2 or Figure 3 , the water regulation device 4 includes an aeration pump 41, an aeration pipe 42, a heating rod 43, a cooling coil 44, and a refrigerating machine 45. The aeration pump 41 is disposed outside the circulating aquaculture pond. The aeration pipe 42 is disposed at the bottom of the water in the slow flow area 1. The aeration pump 41 is connected to the aeration pipe 42 to aerate the circulating aquaculture pond and adjust the dissolved oxygen content of the water. The heating rod 43 is a heating rod 43 with a thermistor for detecting temperature or a bimetallic strip mechanical temperature control heating rod 43, and is disposed in the slow flow area 1 or the rapid flow area for heating the water. The refrigerating machine 45 is a compression refrigerating machine 45 and is disposed outside the circulating aquaculture pond. The cooling coil 44 is wound around the outer side wall of the second drain pipe 35 and is close to the drain outlet. Both ends of the cooling coil 44 are communicated with the refrigerating end of the refrigerating machine 45. The refrigerating machine 45 refrigerates the cooling coil 44, and the second drain pipe 35 is a metal pipe. The cooling coil 44 conducts refrigeration to the second drain pipe 35 to cool the water in the second drain pipe 35 to adjust the temperature of the water. In this embodiment, the water regulation device 4 further includes a dissolved oxygen monitoring device and a water temperature monitoring device to monitor the dissolved oxygen content and temperature of the water in the circulating aquaculture pond, and adjust the dissolved oxygen content and temperature of the water in the circulating aquaculture pond according to the Yellow River water ecological environment.

[0025] Furthermore, the sediment regulation device 5 includes a sand box 51 for containing sediment, a sediment discharge scraper 52, and a driving machine 53. The sand box 51 is erected above the water inlet of the rapid flow area 2. A sediment discharge hole is opened at the bottom of the sand box 51. The sediment discharge scraper 52 is arranged on the sediment discharge hole. The driving machine 53 is axially connected to the sediment discharge scraper 52 and drives the sediment discharge scraper 52 to rotate, scraping the sediment in the sand box 51 out of the sediment discharge hole and releasing the sediment into the water flow to adjust the sediment content in the water flow and simulate the sediment water environment of the Yellow River.

[0026] Furthermore, supplementary light lamps 6 are also arranged around the slow flow area 1 and the rapid flow area 2 for supplementing light to the circulating domestication pool.

[0027] Please refer to Figure 1 , in the above embodiment, in order to fully simulate the water flow and water ecological environment characteristics of the Yellow River, the side walls of the water channels in the slow flow area 1 and the rapid flow area 2 are both made of rammed loess structure, and river sand is laid at the bottom. The side walls on both sides of the water channel in the rapid flow area 2 extend in an irregular concave-convex shape and are tortuous, so that multiple backwater bays are formed during the water flow process. According to the habits of fish in the natural waters of the Yellow River, irregularly sized protruding rocks 21 are arranged at intervals at the bottom of the rapid flow area 2 to simulate the submerged reefs of the Yellow River bed. Shoals 22 and aquatic plants 23 are arranged at the backwater bays in the rapid flow area 2 to further improve the adaptability of protecting fish. After the protected fish are released after breeding, they have better adaptability and higher survival rate to the natural waters of the Yellow River.

[0028] When the proposed domestication and cultivation system is specifically used, high-quality Yellow River water is selected as the breeding water and poured into the circulating domestication pool. High-quality Yellow River sediment is selected and added into the sediment regulation device 5. The sediment content is detected by a sediment content detection device arranged in the water in the rapid flow area 2, and the sediment discharge of the sediment regulation device 5 is controlled according to the sediment content in the water to simulate the sediment water environment of the Yellow River. The dissolved oxygen content and temperature of the water in the circulating domestication pool are monitored by a dissolved oxygen monitoring device and a water temperature monitoring device, and the dissolved oxygen content and temperature of the water in the circulating domestication pool are adjusted according to the indicators of the Yellow River water ecological environment. The adaptability of the protected fish to the water environment of the circulating domestication pool is improved, and the mortality rate is reduced. After the protected fish bred by this domestication and cultivation system are released, they have better adaptability and higher survival rate to the natural waters of the Yellow River.

[0029] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An aquaculture system for simulating the water ecological environment of native fish in the Yellow River, characterized in that: It includes a circulating domestication pool, a water purification device, a water regulation device and a sand regulation device arranged in the circulating domestication pool. The circulating domestication pool includes a slow-flow area and a rapid-flow area. The water inlet and outlet of the rapid-flow area are connected end to end with the slow-flow area to form an annular domestication water channel. And the terrain of the water inlet of the rapid-flow area is higher than its water outlet, and the terrain of the water outlet of the rapid-flow area is higher than that of the slow-flow area. The water purification device and the water regulation device are arranged in the slow-flow area. The water regulation device is used to regulate the dissolved oxygen content and temperature of the water in the circulating domestication pool. The water purification device purifies the water in the slow-flow area and discharges the purified water to the water inlet of the rapid-flow area, so that the water flows rapidly along the rapid-flow area to the slow-flow area under the action of the terrain difference. The sand regulation device is arranged at the water inlet of the rapid-flow area and is used to release sediment into the water flow, and the sediment flows along the domestication water channel under the scouring of the water flow discharged by the water purification device, so as to regulate the sediment content in the water flow and simulate the Yellow River water ecological environment for domesticating and cultivating native fish in the Yellow River; The side walls on both sides of the rapid-flow area extend tortuously in an irregular concave-convex shape, so that multiple backwater bays are formed during the water flow process to simulate the characteristics of the rapid-flow river channel of the Yellow River; The side walls of the slow-flow area and the rapid-flow area are both of loess rammed structure, and irregularly sized raised rocks are arranged at intervals at the bottom of the rapid-flow area to simulate the submerged reefs of the Yellow River bed; The sand regulation device includes a sand box for holding sediment, a sand discharge scraper and a driving machine. The sand box is erected above the water inlet of the rapid-flow area, and a sand discharge hole is opened at the bottom of the sand box. The sand discharge scraper is arranged on the sand discharge hole. The driving machine is shaft-connected with the sand discharge scraper and drives the sand discharge scraper to rotate to scrape the sediment in the sand box out of the sand discharge hole and release sediment into the water flow to regulate the sediment content in the water flow.

2. The simulated domestication and cultivation system for the aquatic ecological environment of the native fish in the Yellow River according to claim 1, characterized in that: The water purification device includes a vertical flow sedimentation tank, a first drain pipe and a first circulation pump. The vertical flow sedimentation tank is arranged on one side or above the circulating domestication pool. One end of the first drain pipe is connected to the water inlet of the vertical flow sedimentation tank, and the other end is arranged at the center of the bottom of the water in the slow-flow area. The first circulation pump is arranged on the first drain pipe to pump the water and sediment in the slow-flow area into the vertical flow sedimentation tank for purification. A water diversion pipe is arranged at the water purification outlet of the vertical flow sedimentation tank, and the drainage end of the water diversion pipe is arranged at the water inlet of the rapid-flow area to divert the purified water to the rapid-flow area.

3. The Yellow River native fish water ecological environment simulation domestication and cultivation system according to claim 2, characterized in that: The water purification device further includes a floating matter filter, a second drain pipe and a second circulation pump. The floating matter filter is arranged under the water surface at the center of the slow-flow area, and the water inlet of the floating matter filter is close to the water surface in the slow-flow area to collect and filter the floating matter on the water surface. One end of the second drain pipe is connected to the water outlet of the floating matter filter, and the other end is arranged at the water inlet of the rapid-flow area. The second circulation pump is arranged on the second drain pipe to divert the filtered water to the rapid-flow area.

4. The simulated domestication and cultivation system for the water ecological environment of the native fish in the Yellow River according to claim 3, characterized in that: The water purification device further includes a flow-through ultraviolet sterilizer, and the flow-through ultraviolet sterilizer is arranged on the water diversion pipe or the second drain pipe to sterilize the water introduced into the rapid-flow area.

5. The simulated domestication and cultivation system for the water ecological environment of the native fish in the Yellow River according to claim 4, characterized in that: The water regulation device includes an aeration pump, an aeration pipe, a heating rod, a cooling coil and a refrigerator. The aeration pump is arranged outside the circulating domestication pool. The aeration pipe is arranged at the bottom of the water in the slow flow area. The aeration pump is connected to the aeration pipe to aerate the circulating domestication pool and adjust the dissolved oxygen content of the water. The heating rod is arranged in the slow flow area for heating the water. The refrigerator is arranged outside the circulating domestication pool. The cooling coil is coiled around the outer wall of the second drain pipe and is close to the drain outlet. Both ends of the cooling coil are communicated with the refrigerating end of the refrigerator, and the cold source is conducted through the cooling coil to cool the water discharged from the second drain pipe so as to adjust the temperature of the water.

6. The simulated domestication and cultivation system for the aquatic ecological environment of native fish in the Yellow River according to claim 1, characterized in that: Supplementary lights are also arranged around the slow flow area and the rapid flow area for supplementing light to the circulating domestication pool.

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