CN211832439U - Circulation subregion layering purifies breed aquatics pond - Google Patents
Circulation subregion layering purifies breed aquatics pond Download PDFInfo
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- CN211832439U CN211832439U CN202020100276.8U CN202020100276U CN211832439U CN 211832439 U CN211832439 U CN 211832439U CN 202020100276 U CN202020100276 U CN 202020100276U CN 211832439 U CN211832439 U CN 211832439U
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The utility model discloses a circulation subregion layering purifies breed aquatics pond, its technical scheme main points are: the system comprises a dense culture area, a precipitation denitrification reduction area, an aeration circulating purification area, a biological purification area and a water supply area which are sequentially communicated, wherein the water supply area is communicated with the dense culture area; the device is characterized in that a first water passing wall is arranged between the intensive culture area and the precipitation denitrification reduction area, a second water passing wall is arranged between the precipitation denitrification reduction area and the aeration circulating purification area, the second water passing wall is higher than the first water passing wall, biological fillers are arranged on the upper portion of the water area of the precipitation denitrification reduction area, and the lower portion of the water area of the precipitation denitrification reduction area is used for accumulating and treating residual bait excrement. The utility model discloses a circulation subregion layered purification aquaculture pond need not retrieve incomplete bait excrement and urine, adopts intensive breed mode, easily management, and survival output is high.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of aquaculture, and particularly relates to a circulating partitioned layered purification aquaculture pond.
[ background of the invention ]
The discharge of tail water of a pond becomes the development trend of aquaculture industry, the current novel technology for emission reduction cultivation comprises a pond circulating flow water cultivation method, a pond partition cluster cleaning cultivation technology and the like, the main contents are that firstly, cultivated water leaves a cultivation area and is purified through different purification facilities, and secondly, cultivated fish clusters are treated in a small area by sucking residual fish bait and excrement out of the cultivation pond through equipment. The former has the advantages of reducing the consumption of dissolved oxygen in water body, circularly processing by biological purification and other modes, but the biological purification capacity is limited, facing 2-3 tons of bait throwing amount per mu of pond, the degradation requirement of the residual bait dejecta of fish shoal can not be met at all, further leading to the continuous increase of the concentration of ammonia nitrogen, nitrite nitrogen and total nitrogen in water, the continuous deterioration of water quality, and continuous pollution to the water body, thereby influencing the fish shoal cultivation, while the latter adopts other facilities, continuously sucking out the generated residual bait dejecta and then carrying out secondary processing, because there is not enough water area for the residual bait dejecta to settle, the suction removal rate of the residual bait dejecta is generally below 20%, the removal rate is low, the manufacturing cost is high, the energy consumption is large, the operation maintenance is difficult, and simultaneously, the dissolved oxygen rate of the total water body is also influenced, and.
[ summary of the invention ]
The invention discloses a circulating and partitioned layered purification aquaculture pond, which does not need to recover residual bait and excrement, adopts a dense aquaculture mode, is easy to manage and has high survival yield.
The technical scheme adopted by the invention is as follows:
a circulating and partitioned layered purification aquaculture pond comprises a dense aquaculture area, a precipitation denitrification reduction area, an aeration circulating purification area, a biological purification area and a water supply area which are sequentially communicated, wherein the water supply area is communicated with the dense aquaculture area;
the device is characterized in that a first water passing wall is arranged between the intensive culture area and the precipitation denitrification reduction area, a second water passing wall is arranged between the precipitation denitrification reduction area and the aeration circulating purification area, the second water passing wall is higher than the first water passing wall, biological fillers are arranged on the upper portion of the water area of the precipitation denitrification reduction area, and the lower portion of the water area of the precipitation denitrification reduction area is used for accumulating and treating residual bait excrement. Adopt intensive breed cooperation large tracts of land biological purification circulation, can improve breed output efficiency, make things convenient for daily management simultaneously, if concentrate on put in bait, make things convenient for daily examination population disease, conveniently drag for the fish, deal with emergency or bad weather etc. fast, concentrate on simultaneously that the sedimentation denitrification reducing zone subsides the processing of saving to incomplete bait excrement and urine, do not set up other incomplete bait excrement and urine and retrieve the link, first wall and second wall and adjacent subregion are crossed and are distinguished from each other, avoid anaerobic zone diffusion to influence peripheral waters.
The method can keep the circulating water body to maintain the normal culture requirement within 3-5 years, residual bait excrement is designed to be intensively settled at the bottom of a precipitation denitrification reduction zone to form an anaerobic zone, the anaerobic zone forms a continuously increased carbon source based on a denitrification mechanism, the continuously increased residual bait excrement can be subjected to denitrification and denitrification, nitrogen-containing substances in the water body are obviously reduced, other small particles in the water body can be removed, the water body is purified, the residual bait excrement recovery equipment investment and procedures are reduced, the zero emission of the culture water body is realized, and the continuous circulation stability of the purification of the intensive culture water body is maintained.
Preferably, the intensive culture area is provided with a layered circulation device, the layered circulation device comprises a first thrust mechanism arranged at the water inlet end of the intensive culture area, the first thrust mechanism comprises a first water pump arranged at the upper part of the water body and a first guide pipe communicated with the water outlet of the first water pump, the water outlet of the first guide pipe is positioned at the lower part of the water body, and the water outlet direction faces the precipitation denitrification reduction area. The activation purifies the water and sends into intensive breed district through aeration purification in the water-feeding zone, design layering circulating device in intensive breed district, carry out the layering control to the water in intensive breed district and flow, first thrust mechanism locates the front end in intensive breed district, water upper portion is located to its first water pump, with the proportion be greater than 5 activation purification water that become, carry to intensive breed district water lower part through first guide pipe, the water flows along the direction towards precipitation denitrification reduction district, form the layering with upper activation purification water flow and flow, avoid causing the upper and lower layer water oxygen-containing difference of intensive breed district too big, help carrying out the residual bait excrement and urine of water bottom simultaneously.
Preferably, the layered circulation device further comprises a second thrust mechanism arranged at the water outlet end of the intensive culture area, the second thrust mechanism comprises a second water pump arranged at the lower part of the water body and a second guide pipe communicated with the water outlet of the second water pump, the position of the water outlet of the second guide pipe is higher than the first water passing wall, and the water outlet direction faces the precipitation denitrification reduction area. The second thrust mechanism is arranged at the rear end of the intensive culture area, the second water pump is arranged at a position close to the bottom of the first water passing wall, the water body at the bottom can be conveyed to the precipitation denitrification reduction area in a circulating mode by the aid of the assisting force, particularly, residual bait and excrement at the bottom are avoided from forming a water circulation dead angle at the bottom of the water passing wall, a local anaerobic area is caused, the water outlet of the second guide pipe is over the first water passing wall, the water outlet faces the precipitation denitrification reduction area, the water carrying the residual bait and excrement at the bottom of the water body can be directly conveyed to the precipitation denitrification reduction area, and the layered flow of the water body at the upper part of the intensive culture area can be matched.
Preferably, a counter-flow blocking device for preventing water from flowing backwards is arranged between the intensive culture area and the precipitation denitrification reduction area, the counter-flow blocking device comprises a hinge shaft and a counter-flow baffle hinged along the hinge shaft, the hinge shaft is parallel to the water surface and vertical to the water flow direction, the counter-flow baffle floats in the water flow direction, when water flows backwards due to typhoon, the counter-flow baffle rotates to be vertical to the water surface along the hinge shaft, and the height of the counter-flow baffle is not less than the depth of the water area on the upper portion of the first water passing wall. The reverse flow blocking device is arranged to prevent water flow in the pond from going backwards in severe weather such as typhoon and the like, the sedimentation denitrification reduction zone influences the intensive culture zone, when strong wind pushes the water flow to flow reversely, the reverse flow baffle is overturned to be perpendicular to the water surface along the hinged part and forms separation with the water retaining wall, water is prevented from flowing backwards into the intensive culture zone, population safety is protected, the overturning of the reverse flow baffle can be set to be automatic, when water circulation flows backwards, the reverse flow baffle is horizontally overturned along the water flow direction without blocking the water flow, when the water circulation flows backwards due to external force, the reverse flow baffle vertically falls down along the water flow direction to block the water flow, a discharge port is particularly arranged on the reverse flow baffle, a circulating water outlet of the layering circulating device is guaranteed to be unblocked in severe weather, active water circulation of the intensive culture zone and the sedimentation denitrification reduction zone is continuously maintained.
Preferably, the water flow exchange amount of the upper part of the water area of the precipitation denitrification reduction area is 2 times of the water flow exchange amount of the intensive culture area, the water flow of the lower part of the water area of the precipitation denitrification reduction area is relatively static, the water flow area length of the precipitation denitrification reduction area is at least 4 times of that of the intensive culture area, the depth of the intensive culture area is 1.2-2 m, and the depth of the precipitation denitrification reduction area is not less than 2-3 m. The depth of the intensive culture area is preferably 1.6m, the lower part of the precipitation denitrification reduction area is provided with a precipitation reduction area, water flow is relatively static, residual bait excrement can be deposited and accumulated for a long time, an anaerobic denitrification area is formed, the depth of the precipitation denitrification reduction area is preferably 2.5m, the culture water circulation requirement of 3-5 years can be guaranteed, sediment does not need to be cleared, the culture area can be deeper, the water flow exchange quantity of the upper part of a water area of the precipitation denitrification reduction area is designed to be 2 times of the water flow exchange quantity of the intensive culture area, the design length of the water flow area of the precipitation denitrification reduction area is preferably not less than 30m, and the residual bait excrement can be guaranteed to be completely deposited in the area.
Preferably, the biological filler is a polymer of brush ceramsite fibers, and the volume of the biological filler is not less than 1/5 of that of the water body in the precipitation denitrification reduction zone.
Preferably, the lower parts of the first water passing wall and the second water passing wall are both water-stop baffles, the height of the water-stop baffle at the lower part of the first water passing wall is 1/2 of the depth of the water body, and the height of the water stop baffle at the lower part of the second water passing wall is 2/3 of the depth of the water body. In order to ensure that the residual bait excrement is completely settled in the precipitation denitrification reduction zone, the height of the second water retaining wall is higher than that of the first water retaining wall, a third water passing wall is arranged between the water supply zone and the intensive culture zone, a fourth water passing wall is arranged between the aeration circulating purification zone and the biological purification zone, and the heights of the third water passing wall and the fourth water passing wall are equal to that of the first water passing wall.
Preferably, the intensive culture area comprises at least 2 culture subareas which are arranged in parallel, and the intensive culture area accounts for 3-5% of the total area of the culture pond. Intensive breed district centralized management can breed the quality according to the difference and dispose in different cultivation subareas, can also take into account different growth cycle, and the time of seedling and fishing down is rationally arranged, and management work can concentrate on intensive breed district, greatly reduces the cost of labor, can effectively reduce simultaneously and breed the outer row of sewage.
A construction method of a circulating partitioned layered purification aquaculture pond comprises the following steps:
1) dividing a culture pond into a dense culture area, a precipitation denitrification reduction area, an aeration circular purification area, a biological purification area and a water supply area, wherein the dense culture area → the precipitation denitrification reduction area → the aeration circular purification area → the biological purification area → the water supply area → the dense culture area are adjacent in sequence and form a circulation loop;
2) arranging a blocking net or a water tank around the intensive culture area to be spaced from other areas;
3) water walls are arranged among the dense culture area, the sedimentation denitrification reduction area and the aeration circulating purification area;
4) arranging a water pushing device at a pond corner of the biological purification area and the water feeding area, arranging a layered circulating device in the intensive culture area, circularly pushing half of fresh active water in the water feeding area through the bottom of the intensive culture area, arranging biological fillers in the sedimentation denitrification reduction area, arranging aeration devices at the bottoms of the water feeding area and the aeration circulating purification area, and culturing green plants in the biological purification area;
5) a countercurrent blocking device is arranged between the intensive culture area and the precipitation denitrification reduction area, so that adverse tidal surge influence of severe weather such as typhoon and the like on the intensive culture area is prevented.
The invention has the beneficial effects that:
according to the circulating and partitioned layered purification aquaculture pond, cultured fishes and the like are cultured in a dense aquaculture area, water circulates to drive residual bait excrement to enter a precipitation denitrification reduction area for sedimentation and collection, the residual bait excrement is subjected to denitrification nearby and is subjected to reduction reaction, a device is not required to be additionally arranged for sucking out secondary treatment, a first water retaining wall and a second water retaining wall are arranged on the front side and the rear side of the precipitation denitrification reduction area, accumulated precipitates in the precipitation denitrification reduction area cannot influence a circulating water body, the water body sequentially enters an aeration circulating purification area for aeration, oxygen consumed by the water body in the nitrification process is supplemented, the water body is subjected to purification treatment through the technologies such as microbial technology, carrier adsorption and aquatic animal and plant treatment and is recycled again, and the outward discharge treatment of aquaculture sewage is reduced;
the layered circulation device is arranged in the intensive culture area, fresh active water in the water supply area is driven to circulate from the bottom of the intensive culture area, the three-dimensional culture capacity of the intensive culture area is enhanced, movable fish schools in a lower water area can grow normally, the sedimentation denitrification reduction area is provided with the biological purification mechanism, substances such as ammonia nitrogen and the like are absorbed and fixed and oxidized through biological fillers, and the aeration devices are arranged at the bottoms of the water supply area and the aeration circulation purification area, so that the effect of treating residual bait and excrement is not needed to be sucked out.
[ description of the drawings ]
FIG. 1 is a layout of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention.
[ detailed description ] embodiments
The aquaculture pond of the application, as shown in the attached figures 1-2, is constructed by referring to the following method:
a construction method of a circulating partitioned layered purification aquaculture pond comprises the following steps:
1) dividing a culture pond into a dense culture area, a precipitation denitrification reduction area, an aeration circular purification area, a biological purification area and a water supply area, wherein the dense culture area → the precipitation denitrification reduction area → the aeration circular purification area → the biological purification area → the water supply area → the dense culture area are adjacent in sequence and form a circulation loop;
2) arranging a blocking net or a water tank around the intensive culture area to be spaced from other areas;
3) water walls are arranged among the dense culture area, the sedimentation denitrification reduction area and the aeration circulating purification area;
4) arranging a water pushing device at a pond corner of the biological purification area and the water feeding area, arranging a layered circulating device in the intensive culture area, circularly pushing half of fresh active water in the water feeding area through the bottom of the intensive culture area, arranging biological fillers in the sedimentation denitrification reduction area, arranging aeration devices at the bottoms of the water feeding area and the aeration circulating purification area, and culturing green plants in the biological purification area;
5) a countercurrent blocking device is arranged between the intensive culture area and the precipitation denitrification reduction area, so that adverse tidal surge influence of severe weather such as typhoon and the like on the intensive culture area is prevented.
As shown in the attached figure 1, the designed circulating and partitioned layered purification aquaculture pond comprises a dense aquaculture area 1, a precipitation denitrification reduction area 2, an aeration circulating purification area 3, a biological purification area 4 and a water supply area 5 which are sequentially communicated, wherein the water supply area 5 is communicated with the dense aquaculture area 1; a first water passing wall 21 is arranged between the intensive culture area 1 and the precipitation denitrification reducing area 2, a second water passing wall 22 is arranged between the precipitation denitrification reducing area 2 and the aeration circulating purification area 3, the second water passing wall 22 is higher than the first water passing wall 21, a biological filler 23 is arranged at the upper part of a water area of the precipitation denitrification reducing area 2, and the lower part of the water area of the precipitation denitrification reducing area 2 is used for accumulating and treating residual bait excrement. Intensive culture is adopted to be matched with large-area biological purification circulation, the culture output efficiency can be improved, meanwhile, daily management is facilitated, such as concentrated bait throwing, daily screening of population diseases, fish fishing and rapid response to emergency or severe weather, and the like, meanwhile, the sedimentation and accumulation treatment of residual bait excrement is carried out in a sedimentation denitrification reduction area, other residual bait excrement recovery links are not arranged, and the first water passing wall and the second water passing wall are separated from adjacent subareas, so that the influence of the diffusion of an anaerobic area on peripheral water areas is avoided; the method can keep the circulating water body to maintain the normal culture requirement within 3-5 years, residual bait excrement is designed to be intensively settled at the bottom of a precipitation denitrification reduction zone to form an anaerobic zone, the anaerobic zone forms a continuously increased carbon source based on a denitrification mechanism, the continuously increased residual bait excrement can be subjected to denitrification and denitrification, nitrogen-containing substances in the water body are obviously reduced, other small particles in the water body can be removed, the water body is purified, the residual bait excrement recovery equipment investment and procedures are reduced, the zero emission of the culture water body is realized, and the continuous circulation stability of the purification of the intensive culture water body is maintained.
As shown in fig. 2, the intensive culture area 1 is provided with a layered circulation device 6, the layered circulation device 6 comprises a first thrust mechanism 61 arranged at the water inlet end of the intensive culture area 1, and further comprises a second thrust mechanism 62 arranged at the water outlet end of the intensive culture area 1, the first thrust mechanism comprises a first water pump 611 arranged at the upper part of the water body, and a first guide pipe 612 communicated with the water outlet of the first water pump 611, the water outlet of the first guide pipe 612 is positioned at the lower part of the water body, and the water outlet direction faces the precipitation denitrification reduction area 2, the second thrust mechanism 62 comprises a second water pump 621 arranged at the lower part of the water body, and a second guide pipe 622 communicated with the water outlet of the second water pump 621, the water outlet of the second guide pipe 622 is positioned higher than the first water passing wall 21, and the water outlet direction faces the precipitation denitrification reduction. The activation purification water body is delivered into the intensive culture area through aeration purification in the water supply area, a layered circulation device is designed in the intensive culture area to carry out layered control flow on the water body in the intensive culture area, a first thrust mechanism is arranged at the front end of the intensive culture area, a first water pump is arranged at the upper part of the water body, the activation purification water body with the proportion of more than 5 is delivered to the lower part of the water body in the intensive culture area through a first guide pipe, the water body flows along the direction towards the precipitation denitrification reduction area and forms layered flow with the flow of the upper activation purification water body, the phenomenon that the oxygen content difference of the upper layer water body and the lower layer water body in the intensive culture area is overlarge is avoided, meanwhile, the residual bait and excrement at the bottom of the water body is favorably carried out, a second thrust mechanism of the layered circulation device is arranged at the rear end of the intensive culture area, the second water pump is arranged at the position close to, especially, residual bait and excrement at the bottom can avoid forming a water circulation dead angle at the bottom of the water passing wall to cause a local anaerobic zone, the water outlet of the second guide pipe is positioned over the first water passing wall, the water outlet faces the precipitation denitrification reduction zone, the water carrying the residual bait and excrement at the bottom of the water body can be directly conveyed to the precipitation denitrification reduction zone, and the water can form layered flow by matching with the water body flow at the upper part of the intensive culture zone.
As shown in fig. 2, a counter-flow blocking device 7 for preventing water from flowing backwards is arranged between the intensive culture area 1 and the precipitation denitrification reduction area 1, the counter-flow blocking device 7 comprises a hinge shaft 71 and a counter-flow baffle plate 72 hinged along the hinge shaft 71, the hinge shaft 71 is parallel to the water surface and vertical to the water flow direction, the counter-flow baffle plate 72 floats along the water flow direction, when the counter-flow baffle plate 72 generates water to flow backwards due to typhoon, the counter-flow baffle plate 72 rotates along the hinge shaft 71 to be vertical to the water surface, and the height of the counter-flow baffle plate 72 is not less than the depth of the water area above the first. The reverse flow blocking device is arranged to prevent water flow in the pond from going backwards in severe weather such as typhoon and the like, the sedimentation denitrification reduction zone influences the intensive culture zone, when strong wind pushes the water flow to flow reversely, the reverse flow baffle is overturned to be perpendicular to the water surface along the hinged part and forms separation with the water retaining wall, water is prevented from flowing backwards into the intensive culture zone, population safety is protected, the overturning of the reverse flow baffle can be set to be automatic, when water circulation flows backwards, the reverse flow baffle is horizontally overturned along the water flow direction without blocking the water flow, when the water circulation flows backwards due to external force, the reverse flow baffle vertically falls down along the water flow direction to block the water flow, a discharge port is particularly arranged on the reverse flow baffle, a circulating water outlet of the layering circulating device is guaranteed to be unblocked in severe weather, active water circulation of the intensive culture zone and the sedimentation denitrification reduction zone is continuously maintained.
As shown in the attached figure 1-2, the water flow exchange amount of the upper part of the water area of the precipitation denitrification reduction area 2 is 2 times of the water flow exchange amount of the intensive culture area 1, the water flow of the lower part of the water area of the precipitation denitrification reduction area 2 is relatively static, the water flow area length of the precipitation denitrification reduction area 2 is at least 4 times of that of the intensive culture area 1, the depth of the intensive culture area 1 is 1.2-2 m, and the depth of the precipitation denitrification reduction area 2 is not less than 2-3 m. The depth of the intensive culture area is preferably 1.6m, the lower part of the precipitation denitrification reduction area is provided with a precipitation reduction area, water flow is relatively static, residual bait excrement can be deposited and accumulated for a long time, an anaerobic denitrification area is formed, the depth of the precipitation denitrification reduction area is preferably 2.5m, the culture water circulation requirement of 3-5 years can be guaranteed, sediment does not need to be cleared, the culture area can be deeper, the water flow exchange quantity of the upper part of a water area of the precipitation denitrification reduction area is designed to be 2 times of the water flow exchange quantity of the intensive culture area, the design length of the water flow area of the precipitation denitrification reduction area is preferably not less than 30m, and the residual bait excrement can be guaranteed to be completely deposited in the area.
As shown in the attached figures 1-2, the biological filler 23 is a polymer of brush ceramsite fibers, and the volume of the biological filler 23 is not less than 1/5 of the water body in the precipitation denitrification reduction zone 2; the lower parts of the first water passing wall 21 and the second water passing wall 22 are water-stop baffles, the height of the water-stop baffle at the lower part 21 of the first water passing wall is 1/2 of the depth of the water body, and the height of the water-stop baffle at the lower part of the second water passing wall 22 is 2/3 of the depth of the water body; in order to make the residual bait and excrement fully settle in the sedimentation denitrification reduction zone, the height of a second water retaining wall 22 is designed to be higher than that of a first water retaining wall 21, a third water passing wall 24 is also arranged between the water supply zone 5 and the intensive culture zone 1, a fourth water passing wall 25 is also arranged between the aeration circulating purification zone 3 and the biological purification zone 4, the heights of the third water passing wall 24 and the fourth water passing wall 25 are equivalent to that of the second water passing wall 22, and aeration devices 31 are arranged at the bottoms of the water supply zone 5 and the aeration circulating purification zone 3; the intensive culture area 1 comprises at least 2 culture subareas which are arranged in parallel, and the intensive culture area 1 accounts for 3-5% of the total area of the culture pond.
The aquaculture pond is designed according to the planning, and indexes in the continuous aquaculture period of the actual test pond are shown in table 1:
table 1: various water body indexes in continuous culture period of culture pond
Note: the above table is continuously counted for 3 months per cultivation period.
According to the circulating and partitioned layered purification aquaculture pond, cultured fishes and the like are cultured in a dense aquaculture area, water circulates to drive residual bait excrement to enter a precipitation denitrification reduction area for sedimentation and collection, the residual bait excrement is subjected to denitrification nearby and is subjected to reduction reaction, a device is not required to be additionally arranged for sucking out secondary treatment, a first water retaining wall and a second water retaining wall are arranged on the front side and the rear side of the precipitation denitrification reduction area, accumulated precipitates in the precipitation denitrification reduction area cannot influence a circulating water body, the water body sequentially enters an aeration circulating purification area for aeration, oxygen consumed by the water body in the nitrification process is supplemented, the water body is subjected to purification treatment through the technologies such as microbial technology, carrier adsorption and aquatic animal and plant treatment and is recycled again, and the outward discharge treatment of aquaculture sewage is reduced; the layered circulation device is arranged in the intensive culture area and drives fresh active water in the water supply area to circulate from the bottom of the intensive culture area, so that the three-dimensional culture capacity of the intensive culture area is enhanced, movable fish schools in a lower water area can normally grow, a biological purification mechanism is arranged in the sedimentation denitrification reduction area, substances such as fixed substances, ammonia nitrogen oxides and the like are absorbed and fixed by biological fillers, and aeration devices are arranged at the bottoms of the water supply area and the aeration circulation purification area, so that the effect of treating residual bait and excrement without sucking is achieved; a construction method of a circulating partitioned layered purification aquaculture pond is designed for centralized management of intensive aquaculture areas, can be configured in different aquaculture branch management works according to different aquaculture qualities and can be centralized in the intensive aquaculture areas, and a precipitation denitrification reduction area is arranged for settling and accumulating residual bait and excrement, so that labor cost is greatly reduced.
Claims (8)
1. The utility model provides a circulation subregion layering purifies breed aquatics pond which characterized in that includes: the system comprises a dense culture area, a precipitation denitrification reduction area, an aeration circulating purification area, a biological purification area and a water supply area which are sequentially communicated, wherein the water supply area is communicated with the dense culture area;
the device is characterized in that a first water passing wall is arranged between the intensive culture area and the precipitation denitrification reduction area, a second water passing wall is arranged between the precipitation denitrification reduction area and the aeration circulating purification area, the second water passing wall is higher than the first water passing wall, biological fillers are arranged on the upper portion of the water area of the precipitation denitrification reduction area, and the lower portion of the water area of the precipitation denitrification reduction area is used for accumulating and treating residual bait excrement.
2. The circulating zoned layered purification aquaculture pond of claim 1, wherein: the layered circulation device comprises a first thrust mechanism arranged at the water inlet end of the intensive culture area, the first thrust mechanism comprises a first water pump arranged at the upper part of a water body and a first guide pipe communicated with the water outlet of the first water pump, the water outlet of the first guide pipe is positioned at the lower part of the water body, and the water outlet direction faces to the precipitation denitrification reduction area.
3. The circulating zoned layered purification aquaculture pond of claim 2, wherein: the layered circulation device further comprises a second thrust mechanism arranged at the water outlet end of the intensive culture area, the second thrust mechanism comprises a second water pump arranged at the lower part of the water body and a second guide pipe communicated with the water outlet of the second water pump, the position of the water outlet of the second guide pipe is higher than the first water passing wall, and the water outlet direction faces the precipitation denitrification reduction area.
4. The circulating zoned layered purification aquaculture pond of claim 1, wherein: the counter-flow blocking device is used for preventing water from flowing backwards and comprises a hinge shaft and a counter-flow baffle hinged along the hinge shaft, the hinge shaft is parallel to the water surface and perpendicular to the water flow direction, the counter-flow baffle floats along the water flow direction, when the counter-flow baffle generates water to flow backwards due to typhoon, the counter-flow baffle rotates along the hinge shaft to be perpendicular to the water surface, and the height of the counter-flow baffle is not less than the depth of the water area at the upper part of the first water passing wall.
5. The circulating zoned layered purification aquaculture pond of claim 1, wherein: the water flow exchange amount of the upper part of the water area of the precipitation denitrification reduction area is 2 times of the water flow exchange amount of the intensive culture area, the water flow of the lower part of the water area of the precipitation denitrification reduction area is relatively static, the water flow area length of the precipitation denitrification reduction area is at least 4 times of that of the intensive culture area, the depth of the intensive culture area is 1.2-2 m, and the depth of the precipitation denitrification reduction area is not less than 2-3 m.
6. The circulating zoned layered purification aquaculture pond of claim 1, wherein: the biological filler is a polymer of hairbrush ceramsite fibers, and the volume of the biological filler is not less than 1/5 of that of the water body in the precipitation denitrification reduction zone.
7. The circulating zoned layered purification aquaculture pond of claim 1, wherein: the lower parts of the first water passing wall and the second water passing wall are water-proof baffles, the height of the water-proof baffle at the lower part of the first water passing wall is 1/2 of the depth of a water body, and the height of the water-proof baffle at the lower part of the second water passing wall is 2/3 of the depth of the water body.
8. The circulating zoned layered purification aquaculture pond of claim 1, wherein: the intensive culture area comprises at least 2 culture subareas which are arranged in parallel, and the intensive culture area accounts for 3-5% of the total area of the culture pond.
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