CN205213849U - Cold water fishes fish egg hatching and seed rearing system - Google Patents

Abstract

The utility model provides a cold water fishes fish egg hatching and seed rearing system, include perhaps a plurality of fish ponds, hatching disc, water processing system, an oxygenating device, the fish pond in install detachable hatching disc, the delivery port in fish pond connects gradually water processing system and oxygenating device through the pipeline, and the oxygenating device passes through the pipeline and is connected with the water inlet in fish pond. This system can be used to cold water fishes's fish egg hatching and seed rearing, improves fish egg hatching and seed rearing's success rate by a wide margin. The controllable hatching quality of water condition of overall process, effective solution perplex the frequent problem that takes place of disease of cold water fishes fish egg hatching and seed rearing in -process for a long time.

Description

A cold-water fish egg hatching and seedling cultivation system

technical field

The utility model relates to the aquaculture industry, in particular to a cold-water fish egg hatching and seed breeding system.

Background technique

Seed breeding is a key link in the upstream of the aquaculture industry chain, and circulating water breeding is the main development direction of current seedling technology. Both domestic and foreign are vigorously developing and promoting circulating water breeding technology and equipment. Fish breeding in circulating water is an advanced production mode in the world. It integrates modern technologies such as civil engineering, machinery, electronics, instrumentation, chemistry, biology, bioengineering and automatic control. Under closed conditions, it monitors the water quality, water flow, water temperature, Semi-automatic or fully automatic management is implemented in feeding, sewage collection, sewage discharge and circulating water treatment; at the same time, comprehensive monitoring is carried out on the germplasm, nutrition, growth and disease prevention of seedlings, so that they can be grown under suitable breeding density conditions. It is an efficient fish seed breeding mode that maintains the best ecological environment and physiological state from beginning to end, so as to achieve healthy and rapid growth, maintain the output and quality of unit water body, and not produce internal and external environmental pollution.

Cold-water fish such as salmon and trout are traditional farming objects in Nordic and North American countries represented by Norway, Denmark and the United States. In 1850, artificial hatching of trout had already appeared in Norway. Since the 1970s, industrially developed countries such as Northern Europe and North America, relying on their strong industrial technology foundation, have increased the research and production of modern aquaculture seed breeding. Capital and technology have been invested in an unprecedented scale and speed, ushering in cold water. The development period of sexual fish seed breeding. In industrially developed countries represented by the United States, Canada, Norway, Denmark, Finland, Japan and Chile, their aquatic breeding technology has reached an advanced stage, and their seedling water recycling and production automation control. In recent years, European and American economic powers have made remarkable achievements in aquaculture, especially in the breeding of cold-water fish fry.

However, at present, the level of aquatic breeding technology and equipment in my country is still in the initial stage of development as a whole. Fish fry farms in some developed areas have adopted industrial nursery technology and equipment, but most areas still mainly adopt indoor breeding methods under flowing water. Since the water quality of production water cannot always be in the best state for running water breeding, the production status is unstable and the breeding results are not ideal. Obviously, it is of great significance to develop a new cold-water fish breeding system.

201220359379.1, a utility model patent titled "A Circulating Water Fish Breeding Device", which includes a fish pond, a water pump, and a pipeline, and is characterized in that it also includes a liquid oxygen tank, a curved screen, a protein separator, a biological pool, and an ultraviolet lamp. The liquid oxygen tank is connected to the fish pond through pipelines, and the fish pond, curved screen, water pump, protein separator, biological pool, and ultraviolet lamp are connected in sequence through pipelines, and the ultraviolet lamp is connected to the fish pond through pipelines. It is arranged in the pipeline connecting the fish pond and the water pump, the protein skimmer is arranged in the pipeline connecting the water pump and the biological pond, the ultraviolet lamp is arranged in the pipeline connecting the biological pond and the fish pond, and an equal-volume The biological filler, the plane where the biological pond is located is higher than the plane where the fish pond is located. The patent does not clarify how the liquid oxygen in the liquid oxygen tank is added to the fish pond or system. If it is directly added to the water through an aeration pan or an air stone, the utilization efficiency of oxygen is very low. The filtration accuracy of the curved sieve is very low (millimeter level). Such filtration accuracy is usually used in adult fish farming. If it is used in the seed cultivation system, it will be difficult to filter out the particulate matter in the seed cultivation system, and the current aquaculture The curved screens used above are not equipped with backwashing devices, the degree of automation is low, and manual backwashing is labor-intensive. On the other hand, protein skimmers are almost ineffective in freshwater aquaculture systems, and only have certain effects in freshwater fish farming on individual special occasions. Therefore the breeding device of this patent is not suitable for seed cultivation.

CN201220213124.4, a utility model patent titled "High-efficiency, energy-saving and environment-friendly recirculating aquaculture system", said recirculating aquaculture system includes: aquaculture pond; water inlet pipe and return pipe; oxygen supplement system; water treatment system; ultraviolet sterilizer; One side of the ultraviolet sterilizer is connected to the return pipe, and the other side of the ultraviolet sterilizer is connected to the water outlet of the water treatment system; the water treatment system is connected in sequence according to the direction of water flow: drum microfilter, sump, sedimentation tank, oxygenation filter The pool and two moving bed biofilm reaction tanks; the sedimentation tank, the aeration filter tank and the two moving bed biofilm reaction tanks are connected to each other through the overflow port on the upper part. The water treatment link of this patent is mainly in the form of a "pool", which inevitably occupies a large area, has a simple structure, is difficult to manage manually, and has high labor intensity. Under normal circumstances, the efficiency of water collection tanks, sedimentation tanks, and aeration filter tanks is very low, and they have been abandoned in conventional recirculating aquaculture systems, and they are not suitable for cold water under the conditions of low pressure and low saturated dissolved oxygen concentration in plateau areas. Fish seed breeding work.

Utility model content

In order to solve the problems of low membrane rupture rate, high deformity rate of larvae and low survival rate of seedlings brought about by the commonly used running water hatching and seedling cultivation, the utility model provides a cold-water fish egg hatching and seedling breeding method. breeding system. This system can be used for egg hatching and seedling cultivation of cold-water fish such as rainbow trout, Yadong salmon, Lhasa Schizothorax, Heterodon Schizothorax, Lhasa schizothorax, Lhasa schizothorax, and sharp cyprinus. Improve the success rate of fish egg hatching and seedling cultivation. The controllable hatching water quality conditions in the whole process can effectively solve the problem of frequent occurrence of diseases in the process of egg hatching and seed cultivation of cold-water fish that has long plagued them.

In order to realize the foregoing invention object, the technical scheme that the utility model adopts is as follows:

A cold-water fish egg hatching and seed cultivation system is characterized in that it includes one or more fish ponds, hatching trays, water treatment systems, and oxygen replenishing devices; detachable hatching trays are installed in the fish ponds, The water outlet of the fish pond is sequentially connected to the water treatment system and the oxygen supply device through the pipeline, and the oxygen supply device is connected to the water inlet of the fish pond through the pipeline.

The utility model puts the hatching tray in the fish pond, which can realize such a process: when the system is used for hatching fish eggs, the fish eggs are put into the hatching tray for hatching fish eggs; , the fry can continue to be placed in the hatching tray for fish eggs until the yolk sac is absorbed and enter the stage of feeding and swimming; when the fry enter the stage of swimming, remove the hatching tray inside the fish pond and put the fry directly into the Breeding in fish ponds. This process can ensure that fish eggs and fry are all cultured in the same system, and the specific operation process can also ensure that fish eggs and fry will not have any chance of leaving the water body, and can avoid damage to fish eggs and fry caused by pouring the pond as much as possible and stress.

The fish pond described in the utility model is a distance-shaped fish pond, which is 2.0-2.5 meters long and 0.5-0.6 meters wide.

The gap between the side wall of the hatching tray described in the utility model and the side wall of the fish pond is 2-6cm. The smaller the gap, the better, and at the same time it is easy to remove the hatching tray.

The hatching tray described in the utility model includes a frame body and a water retaining plate, and the water retaining plate is arranged below a side elevation of the frame body, and the water retaining plate is in seamless contact with the bottom of the fish pond; The bottom surface of the frame body is a mesh structure. The water does not pass through the gap between the hatching tray and the fish pond, but must pass through the mesh at the bottom of the hatching tray, flow through the fish eggs, and then flow out from the mesh on the side of the hatching tray to ensure the direction of water flow.

The hatching of cold water fish eggs requires good water exchange around the eggs, and in most stages the eggs cannot move violently, so the eggs are placed on the mesh at the bottom of the hatching tray, and the water flows upwards from the bottom. It is discharged from the side of the hatching tray, and then enters from the bottom of the next hatching tray, and so on until the last hatching tray.

Further preferably, the apertures of the mesh structure on the side facade and the bottom surface of the frame body are 1-2mm. It is determined by the particle size of hatched fish eggs and the size of newly hatched fry.

Further preferably, a plurality of hatching trays are arranged side by side along the direction of the water inlet to the water outlet in the fish pond, and the water baffle is arranged in the direction of the water outlet. The water flow enters from the bottom of the hatching tray, flows out from the side elevation, until it is discharged from the side elevation of the last hatching tray.

The method of using the cold-water fish egg hatching and seed cultivation system described in the utility model is as follows: when the system is used for fish egg hatching, the water depth in the fish pond is 0.25-0.35m, and the fish eggs are placed in the hatching tray to hatch; After the fish eggs hatch, in the yolk sac absorption stage, the fry are placed in the hatching tray for cultivation. When the fry enters the horizontal swimming stage, the hatching tray in the fish pond is removed, and the fry are put into the fish pond for cultivation. The water depth of the fish pond is adjusted to 0.4-0.5m.

Increase the water volume in the fish pond, and the body length and weight of the fry will increase significantly in the short term after hatching. At the same time, the fry will swim after entering the parallel swimming period, which requires a relatively large space for activities. At the same time, increasing the water volume in the fish pond is also conducive to slowing down the drastic fluctuation of water quality (such as dissolved oxygen concentration, etc.) caused by various unexpected factors.

A water pump is arranged in front of the oxygen supplement device described in the utility model. The water pump is installed here so that the pressurized water can enter the fish pond directly after coming out of the oxygen supply device, and spray into one end of the rectangular fish pond through the perforated pipe above one end of the fish pond, which is conducive to promoting the circulation of the water flow in the fish pond and optimizing the water flow exchange inside the fish pond, which is beneficial Improve the success rate of fish egg hatching.

The oxygen supplement device described in the utility model is an oxygen cone, which has a high oxygen utilization rate; the oxygen cone itself is a closed container, and it is a pressure water intake and a pressure air intake, which is beneficial to the dissolution of oxygen in the water body, and is suitable for avoiding low air pressure in plateau areas The resulting problem of low dissolved oxygen efficiency.

The water treatment system described in the utility model is composed of a filtering device, an ultraviolet sterilizing device and a heat exchange coil. Remove suspended particles in the water body through physical interception, remove ammonia nitrogen and nitrite nitrogen in the water body through biological filtration, prevent the large growth of harmful bacteria in the water body through ultraviolet sterilization, and realize water temperature adjustment through heat exchange of heat exchange coils.

Preferably, the filter device is composed of one of the three-dimensional mesh filler or the biochemical cotton filler and the moving bed biological filter material. The three-dimensional mesh filler and the biochemical cotton filler are mainly considered to be used to retain fine particles, such as frying fish Egg membrane fragments are produced when the egg comes out and the membrane is broken. At the same time, these two fillers also have a certain biological filtration function. The moving bed biological filter material mainly considers the biological filtration of harmful substances such as ammonia nitrogen produced in the fish fry cultivation stage, and the biological treatment efficiency of the moving bed biological filter material is relatively high.

The fish pond described in the utility model is provided with an aeration and oxygenation device, which delays the occurrence of dead eggs or dead fish caused by the rapid consumption of dissolved oxygen after the water circulation stops due to system failure.

The fish pond and the water treatment system described in the utility model are provided with sewage outlets.

Preferably, the sewage is discharged 1-2 times a day, and 10%-11% of the water is added.

The beneficial effects of the utility model are:

1. It has been proved by many tests that the fish egg hatching and seed breeding system of the present utility model can be used for whole female rainbow trout, Yadong salmon, Lhasa schizothorax, heterotodon schizothorax, giant schizothorax, and Lhasa schizothorax. The hatching rate of fish eggs and the survival rate of seedlings in the egg hatching and seedling cultivation of jiri and naked carps are over 90%. The hatching of fish eggs is normal, the feeding and growth of seedlings are normal; the water quality is good, ammonia nitrogen <0.05mg/L, no detectable value of nitrite, dissolved oxygen>6mg/L, no water mold during egg hatching and seedling cultivation And other diseases occur, the system has an excellent effect, which effectively solves the problem of lack of equipment in the artificial hatching system of the above-mentioned varieties.

2. The utility model puts the hatching tray in the fish pond, which can ensure that the fish eggs and fry are all cultured in the same system, and the specific operation process can also ensure that the fish eggs and fry will not have any chance of leaving the water body, which can be avoided as much as possible. The damage and stress caused by pouring ponds to fish eggs and fry.

3. The egg hatching of cold-water fish requires good water exchange around the eggs, and in most stages, the eggs cannot be violently moved. The utility model is provided with a water retaining plate on the hatching tray, so that the water does not pass through the gap between the hatching tray and the fish pond, but must pass through the mesh at the bottom of the hatching tray, and the fish eggs are placed in the mesh at the bottom of the hatching tray. On the object, the water flows upward from the bottom, flows through the fish eggs, and then flows out from the mesh on the side of the hatching tray to ensure the direction of the water flow.

Description of drawings

Fig. 1 is the structural representation of the utility model cold-water fish roe hatching and seed cultivation system.

Fig. 2 is a schematic structural view of the hatching tray of the present invention.

The marks in the figure are: 1. Fish pond, 2. Water treatment system, 3. Water pump, 4. Oxygenation device, 5. Incubation tray, 6. Aeration and oxygenation device, 7. Three-dimensional mesh filler or biochemical cotton filler, 8 . Moving bed biological filter material, 9. Ultraviolet sterilizing device, 10. Heat exchange coil, 11. Side elevation, 12. Sewage pipe, 13. Frame, 14. Water retaining plate.

detailed description

The substantive content of the present utility model will be further described in detail below in conjunction with specific embodiments.

Example 1

A cold-water fish egg hatching and seed cultivation system, comprising a fish pond 1, a hatching tray 5, a water treatment system 2, and an oxygen supply device 4; a detachable hatching tray 5 is installed in the fish pond 1, and the The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Example 2

A cold-water fish egg hatching and seed cultivation system, comprising a fish pond 1, a hatching tray 5, a water treatment system 2, and an oxygen supply device 4; a detachable hatching tray 5 is installed in the fish pond 1, and the The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, long 2.0 meters, wide 0.5 meter.

Example 3

A cold-water fish egg hatching and seed cultivation system, comprising a fish pond 1, a hatching tray 5, a water treatment system 2, and an oxygen supply device 4; a detachable hatching tray 5 is installed in the fish pond 1, and the The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, long 2.5 meters, wide 0.6 meter.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 2 cm.

Example 4

A cold-water fish egg hatching and seed cultivation system, comprising a fish pond 1, a hatching tray 5, a water treatment system 2, and an oxygen supply device 4; a detachable hatching tray 5 is installed in the fish pond 1, and the The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, is long 2.1 meters, and is wide 0.55 meters.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 6 cm.

The hatching tray 5 includes a frame body 13 and a water retaining plate 14, the water retaining plate 14 is arranged under a side elevation 11 of the frame body 13, and the water retaining plate 14 is in seamless contact with the bottom of the fish pond 1; Both the side facade 11 and the bottom surface of the frame body 13 are of mesh structure.

Example 5

A cold-water fish egg hatching and seed cultivation system, comprising a fish pond 1, a hatching tray 5, a water treatment system 2, and an oxygen supply device 4; a detachable hatching tray 5 is installed in the fish pond 1, and the The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, is long 2.2 meters, and is wide 0.52 meters.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 3 cm.

The hatching tray 5 includes a frame body 13 and a water retaining plate 14, the water retaining plate 14 is arranged under a side elevation 11 of the frame body 13, and the water retaining plate 14 is in seamless contact with the bottom of the fish pond 1; Both the side facade 11 and the bottom surface of the frame body 13 are of mesh structure.

The pore diameter of the mesh structure of the side facade 11 and the bottom surface of the frame body 13 is 1mm.

Example 6

A cold-water fish egg hatching and seed cultivation system, comprising a fish pond 1, a hatching tray 5, a water treatment system 2, and an oxygen supply device 4; a detachable hatching tray 5 is installed in the fish pond 1, and the The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, long 2.3 meters, wide 0.56 meters.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 4cm.

The hatching tray 5 includes a frame body 13 and a water retaining plate 14, the water retaining plate 14 is arranged under a side elevation 11 of the frame body 13, and the water retaining plate 14 is in seamless contact with the bottom of the fish pond 1; Both the side facade 11 and the bottom surface of the frame body 13 are of mesh structure.

The pore diameter of the mesh structure of the side facade 11 and the bottom surface of the frame body 13 is 2mm.

A plurality of hatching trays 5 are arranged side by side along the water inlet to the water outlet direction in the fish pond 1, and the water retaining plate 14 is arranged on the water outlet direction.

Example 7

A cold-water fish egg hatching and seed cultivation system, comprising a fish pond 1, a hatching tray 5, a water treatment system 2, and an oxygen supply device 4; a detachable hatching tray 5 is installed in the fish pond 1, and the The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, is long 2.4 meters, and is wide 0.55 meters.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 5 cm.

The hatching tray 5 includes a frame body 13 and a water retaining plate 14, the water retaining plate 14 is arranged under a side elevation 11 of the frame body 13, and the water retaining plate 14 is in seamless contact with the bottom of the fish pond 1; Both the side facade 11 and the bottom surface of the frame body 13 are of mesh structure.

The pore diameter of the mesh structure of the side facade 11 and the bottom surface of the frame body 13 is 1.5mm.

A plurality of hatching trays 5 are arranged side by side along the water inlet to the water outlet direction in the fish pond 1, and the water retaining plate 14 is arranged on the water outlet direction.

The oxygen supply device 4 is an oxygen cone, and a water pump 3 is arranged in front of the oxygen cone.

Example 8

A cold-water fish egg hatching and seed cultivation system, comprising a plurality of fish ponds 1, hatching trays 5, water treatment systems 2, and oxygen supplementing devices 4; detachable hatching trays 5 are installed in the fish ponds 1, The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, and long 2.2 meters, wide 0.5 meter.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 5 cm.

The hatching tray 5 includes a frame body 13 and a water retaining plate 14, the water retaining plate 14 is arranged under a side elevation 11 of the frame body 13, and the water retaining plate 14 is in seamless contact with the bottom of the fish pond 1; Both the side facade 11 and the bottom surface of the frame body 13 are of mesh structure.

The pore diameter of the mesh structure of the side facade 11 and the bottom surface of the frame body 13 is 1.6mm.

A plurality of hatching trays 5 are arranged side by side along the water inlet to the water outlet direction in the fish pond 1, and the water retaining plate 14 is arranged on the water outlet direction.

The oxygen supply device 4 is an oxygen cone, and a water pump 3 is arranged in front of the oxygen cone.

The water treatment system 2 is composed of a filtering device, an ultraviolet sterilizing device 9 and a heat exchange coil 10 .

The filter device is composed of a three-dimensional mesh filler and a moving bed biological filter material.

Example 9

A cold-water fish egg hatching and seed cultivation system, comprising a plurality of fish ponds 1, hatching trays 5, water treatment systems 2, and oxygen supplementing devices 4; detachable hatching trays 5 are installed in the fish ponds 1, The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, long 2.5 meters, wide 0.6 meter.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 3 cm.

The hatching tray 5 includes a frame body 13 and a water retaining plate 14, the water retaining plate 14 is arranged under a side elevation 11 of the frame body 13, and the water retaining plate 14 is in seamless contact with the bottom of the fish pond 1; Both the side facade 11 and the bottom surface of the frame body 13 have a mesh structure.

The pore diameter of the mesh structure of the side facade 11 and the bottom surface of the frame body 13 is 1.6 mm.

A plurality of hatching trays 5 are arranged side by side along the water inlet to the water outlet direction in the fish pond 1, and the water retaining plate 14 is arranged on the water outlet direction.

The oxygen supply device 4 is an oxygen cone, and a water pump 3 is arranged in front of the oxygen cone.

The water treatment system 2 is composed of a filtering device, an ultraviolet sterilizing device 9 and a heat exchange coil 10 .

An aeration and oxygenation device 6 is arranged in the fish pond 1 .

The filter device is composed of a three-dimensional mesh filler and a moving bed biological filter material.

Example 10

A cold-water fish egg hatching and seed cultivation system, comprising a plurality of fish ponds 1, hatching trays 5, water treatment systems 2, and oxygen supplementing devices 4; detachable hatching trays 5 are installed in the fish ponds 1, The water outlet of the fish pond 1 is sequentially connected to the water treatment system 2 and the oxygen supply device 4 through a pipeline, and the oxygen supply device 4 is connected to the water inlet of the fish pond 1 through a pipeline.

Described fish pond 1 is distance shape fish pond, is long 2.2 meters, and is wide 0.55 meters.

The gap between the side wall of the hatching tray 5 and the side wall of the fish pond 1 is 4cm.

The hatching tray 5 includes a frame body 13 and a water retaining plate 14, the water retaining plate 14 is arranged under a side elevation 11 of the frame body 13, and the water retaining plate 14 is in seamless contact with the bottom of the fish pond 1; Both the side facade 11 and the bottom surface of the frame body 13 are of mesh structure.

The pore diameter of the mesh structure of the side facade 11 and the bottom surface of the frame body 13 is 1.8 mm.

A plurality of hatching trays 5 are arranged side by side along the water inlet to the water outlet direction in the fish pond 1, and the water retaining plate 14 is arranged on the water outlet direction.

The oxygen supply device 4 is an oxygen cone, and a water pump 3 is arranged in front of the oxygen cone.

The water treatment system 2 is composed of a filtering device, an ultraviolet sterilizing device 9 and a heat exchange coil 10 .

An aeration and oxygenation device 6 is arranged in the fish pond 1 .

Both the fish pond 1 and the water treatment system 2 are provided with sewage outlets.

The filter device is composed of biochemical cotton filler and moving bed biological filter material.

Claims (10)

1. cold water fishes hatch fish roe and a seed rearing system, is characterized in that: comprise one or more fishpond (1), incubation plate (5), water treatment system (2), oxygen supplementing device (4); Be provided with dismountable incubation plate (5) in described fishpond (1), the delivery port of described fishpond (1) connects water treatment system (2) and oxygen supplementing device (4) successively by pipeline, and oxygen supplementing device (4) is connected by the water inlet of pipeline with fishpond (1).

2. a kind of cold water fishes hatch fish roe according to claim 1 and seed rearing system, is characterized in that: the sidewall of described incubation plate (5) and the gap of fishpond (1) sidewall are 2-6cm.

3. a kind of cold water fishes hatch fish roe according to claim 1 and seed rearing system, it is characterized in that: described incubation plate (5) comprises framework (13) and water fender (14), described water fender (14) is arranged at the below of a side elevation (11) of framework (13), and water fender (14) contacts for seamless with fishpond (1) bottom; This side elevation (11) is network structure with the bottom surface of framework (13).

4. a kind of cold water fishes hatch fish roe according to claim 3 and seed rearing system, is characterized in that: the network structure aperture of described side elevation (11) and framework (13) bottom surface is 1-2mm.

5. a kind of cold water fishes hatch fish roe according to claim 3 and seed rearing system, is characterized in that: have multiple incubation plate (5) along water inlet side by side to delivery port direction in fishpond (1), water fender (14) is arranged on delivery port direction.

6. a kind of cold water fishes hatch fish roe according to claim 1 and seed rearing system, is characterized in that: described oxygen supplementing device (4) is oxygen cone, is provided with water pump (3) before oxygen cone.

7. a kind of cold water fishes hatch fish roe according to claim 1 and seed rearing system, is characterized in that: described water treatment system (2) is made up of filter, ultraviolet sterilization apparatus (9) and heat exchange coil (10).

8. a kind of cold water fishes hatch fish roe according to claim 7 and seed rearing system, is characterized in that: described filter is made up of the one in three-dimension web-like media or biochemical cotton packing and moving bed biological filtrate.

9. a kind of cold water fishes hatch fish roe according to claim 1 and seed rearing system, is characterized in that: be provided with aeration oxygen replenishing device (6) in described fishpond (1).

10. a kind of cold water fishes hatch fish roe according to claim 1 and seed rearing system, is characterized in that: described fishpond (1) and water treatment system (2) are provided with sewage draining exit.