CN205455395U - Spiral white penaeus cultivation system in zero release south america - Google Patents

Abstract

This patent discloses a spiral zero-discharge Penaeus vannamei culture system, which consists of pond I (1), partition net I (2), pond II (3), partition net II (4), pond III (5), The retaining weir (7), the sedimentation tank (8), the overflow weir (9), the purification tank (10), the purification plant (11), the permeable weir (12) and the air lift return device (13), wherein, the air lift The backflow device (13) is composed of a backflow pipe (14), an ultraviolet lamp (16), an aeration pan (17), a mud collection tank (18), a mud discharge valve (19) and an upflow pipe (20). Pool I (1), Pool II (3), and Pool III (5) are an integral structure, the bottom of which is inclined from the beginning of Pool I (1) to the end of Pool III (5), with a slope of 4%. The main advantages of this patent are as follows: (1) It realizes high-density sub-pond culture of Penaeus vannamei in different culture stages, which is beneficial to culture management; (2) It has strong water purification ability; (3) It has a compact structure and saves land.

Description

A spiral zero-discharge Penaeus vannamei culture system

technical field

The patent of the invention belongs to the technical field of aquaculture and water environment protection, and specifically relates to industrialized circulating aquaculture of Penaeus vannamei, and is especially suitable for industrialized aquaculture of Penaeus vannamei in high-density circulating water in inland areas.

Background technique

Penaeus vannamei has delicious meat, high processed meat, and wide temperature range. It can grow at 18-32°C and at a salinity of 1-40‰. It is an excellent desalinated cultured species. Penaeus vannamei grows fast and has strong disease resistance. It has gradually become the main cultured shrimp species in my country.

However, with the expansion of Penaeus vannamei aquaculture scale and the improvement of aquaculture density, problems such as environmental pollution and economic constraints are becoming more and more serious, which greatly restricts the development of aquaculture industry. Especially in the intensive aquaculture process, a large amount of residual bait and feces are discharged into the aquaculture water body, causing the rapid accumulation of ammonia nitrogen and other toxic substances, resulting in the deterioration of the aquaculture water quality and potential environmental pollution. For a long time, the most effective way to solve the deterioration of water quality is to timely drain and change water. However, only small or medium-sized aquaculture systems consume hundreds of cubic meters of water per day. For every 1kg of Penaeus vannamei, at least A water change of 20 t is required. Therefore, it has become an urgent technical problem to solve the culture of Penaeus vannamei by using recirculating aquaculture systems based on different biological treatment modes to eliminate pollutants in the aquaculture water, develop high-density industrialized aquaculture, and achieve simultaneous economic benefits and environmental protection.

Contents of the invention

According to the growth habit of Penaeus vannamei, the production cycle of industrial culture of Penaeus vannamei, and the characteristics of sewage production and discharge at different stages in the production process of Penaeus vannamei, the invention proposes a spiral zero-discharge Penaeus vannamei culture system. The aquaculture system is designed with the technology of three ponds in series, which realizes the three-stage separated cultivation of Penaeus vannamei industrialized aquaculture, as well as the series circulating water system, which is easy to manage and can realize zero discharge of waste water.

The technical scheme of the patent of the present invention is as follows:

A spiral zero-discharge Penaeus vannamei farming system is characterized in that: the system consists of pool I (1), screen I (2), pool II (3), screen II (4), pool III (5 ), retaining weir (7), sedimentation tank (8), overflow weir (9), purification tank (10), purification plant (11), permeable weir (12) and airlift reflux device (13).

A spiral type zero-discharge Penaeus vannamei culture system according to claim 1, characterized in that: the air lift reflux device (13) consists of a reflux pipe (14), an ultraviolet lamp (16), an aeration pan (17), The mud collection tank (18), the mud discharge valve (19) and the riser pipe (20) are composed; the return pipe (14) is composed of DN200mm PVC pipe, and the elevation is 0.1-0.3 meters higher than the top elevation of the pool I (1), and Set a water receiving tray with a vertical upward inclination of 45° at the starting end, and the ultraviolet lamp (16) is located 50 mm above the water receiving tray; the mud collecting tank (18) is located at the top of the riser tube (20), with an inclination of 45°, and the collected sewage The mud is discharged by the mud discharge valve (19); the upflow pipe (20) is composed of DN110mm PVC pipe, the height is 2.6 meters, and the aeration disc (17) is installed at a distance of 0.3-0.5 meters from the lower end; the diameter of the aeration disc (17) 60-90mm, copper gas nozzles are evenly distributed along the surface area of the aeration disk (17).

A spiral zero-discharge Penaeus vannamei culture system according to claim 1, characterized in that pool I (1), pool II (3), and pool III (5) are connected in series to form an overall structure, with a width of 2.0 meters, the top elevation is the same, both are 2.6 meters, the bottom is inclined from the beginning of pool I (1) to the end of pool III (5), with a slope of 4%, the bottom elevation of pool I (1) is 0.6 meters, and pool III (5) The bottom elevation of the end is 0.0m; pool I (1) and pool II (3) are separated by screen I (2), and pool II (3) and pool III (5) are separated by screen II (4). Open, and the length ratio of pool I (1), pool II (3), and pool III (5) is 1:3:6; the partition I (2) and partition II (4) are all stainless steel with a pore diameter of 5-10mm Hole network, 2.0 meters wide and 2.0 meters high.

A spiral zero-discharge Penaeus vannamei culture system according to claim 1, characterized in that: the bottom of the retaining weir (7) is opened at a height of 200 mm to form a mesh structure (15) with a mesh diameter of 10 mm; the sedimentation tank (8 ) is provided with a mud collection well at the bottom, and the bottom elevation of the mud collection well is -0.5 meters; the top elevation of the overflow weir (9) is 2.0 meters; the purification tank (10) is 2.0 meters deep, 6.0-15.0 meters long, and filled with gravel with a particle size of 50-100mm , the filling depth is 1.8 meters, and aquatic purification plants (11) are planted on the upper part of the filling layer; the permeable weir (12) has a height of 1.8 meters, an arc structure, and the radius of the arc is 1.0 meters.

In order to ensure that the daily reflux water volume of the air stripping reflux device (13) reaches 20% of the total volume of pool I (1), pool II (3), and pool III (5), the copper gas nozzles on the aeration disc (17) are vertically Install upwards, the gas injection speed is 0.5-3.0m/s, and the number of air nozzles is 5-10.

In order to achieve high-density culture of Penaeus vannamei in separate ponds, the average seedling rate in pond I (1), pond II (3), and pond III (5) is 500-1000 fish/square meter; It is the desalinated and thickened shrimp seedlings, which are transferred to pond II (3) after being cultured in the forebay (1) for 1 month, and transferred to pond III (5) after being cultured in pond II (3) for 1 month. After one month of breeding in pond III (5), they will be sold.

In order to realize smooth sludge discharge of the system, the settled sediment moves to the bottom of the retaining weir (7) along the slope of the tank bottom under the joint action of aeration disturbance and water flow, and finally collects in the sedimentation tank (8) and passes through the sedimentation tank. The sludge discharge pipe at the bottom of the pool (8) is discharged.

In order to ensure sufficient oxygen supply of the system, aeration heads (6) are installed in pool I (1), pool II (3), and pool III (5), and the installation density of aeration heads is 1/m.

In order to realize the replacement of different culture stages of Penaeus vannamei in pond I (1), pond II (3), and pond III (5), when the vannamei in pond III (5) is sold, remove the partition net II (4) , and slowly push the separation net I (2) downstream to the original position of the separation net II (4), drive the vannamei in the pond II (3) to the pond III (5); then, from the pond I (1 ) from the beginning, slowly push the separation net II (4) downstream, move the separation net II (4) to the original position of the separation net I (2), and transfer the vannamei in the pond I (1) to the pond II (3); finally, put the desalinated and thickened shrimp seedlings in the pool I (1), and repeat the cycle like this.

In order to ensure the safety of the return water quality, the air lift method is used to return the return water, which avoids the lack of dissolved oxygen in the return flow water. At the same time, the installation of the ultraviolet lamp (16) also realizes the disinfection of the return flow water body.

In order to effectively purify water quality, the biofilm covered on the surface of the filler in the purification pool (10) and the purification plant (11) can effectively remove ammonia nitrogen, nitrite nitrogen and total nitrogen in the water body.

The main advantages of the patent of the present invention are as follows: (1) Realized high-density sub-pond culture of Penaeus vannamei in different culture stages, which is beneficial to culture management; (2) It is beneficial to the construction of biofloc system, with strong water purification ability and drainage (3) Compact structure, saving land.

Description of drawings

Fig. 1 is a schematic plan view of the system, Fig. 2 is a schematic sectional view of an air lift reflux device (13), and Fig. 3 is a schematic sectional view of A-A, in the figure:

1-pool Ⅰ; 2-network Ⅰ; 3-pool Ⅱ; 4-network Ⅱ; 5-pool Ⅲ; 6-aeration head; 7-retaining weir; 8-sedimentation tank; 10-purification pool; 11-purification plant; 12-permeable weir; 13-air lift return device; 14-reflux pipe; 15-mesh structure; 16-ultraviolet lamp; 17-aeration plate; 19-sludge discharge valve; 20-liter flow pipe.

detailed description

Fig. 1 is a schematic plan view of the system, Fig. 2 is a schematic sectional view of the air stripping reflux device (13), and Fig. 3 is a schematic sectional view of A-A. The present invention is specifically described below by specific examples, point out that following examples are only used to further illustrate the present invention, can not be interpreted as the restriction to protection scope of the present invention, those skilled in the art can make the present invention according to above-mentioned content of the invention Some non-essential improvements and tweaks.

Example 1 Construction of a spiral zero-discharge Penaeus vannamei culture system

(1) The construction of a spiral zero-discharge Penaeus vannamei culture system can be done on a site with a natural slope or a flat site.

(2) Determine the construction site of a spiral zero-discharge Penaeus vannamei culture system, and determine the elevation of each structure in the system. The width of pool I (1), pool II (3) and pool III (5) is 2.0 meters, and the top elevation is the same, all of which are 2.6 meters; the bottom is inclined from the beginning of pool I (1) to the end of pool III (5). The slope is 4%, the bottom elevation of the beginning of pool I (1) is 0.6 meters, and the bottom elevation of pool III (5) is 0.0 meters;

(3) Determine the elevation of the retaining weir (7), sedimentation tank (8), overflow weir (9), purification tank (10) and permeable weir (12). The retaining weir (7) is 2.0 meters wide, and the bottom is 200mm high to open a mesh structure (15), the mesh aperture is 10mm; the sedimentation tank (8) is 2.0 meters wide, and the bottom is equipped with a mud collection well, and the bottom elevation of the mud collection well is -0.5 meters The overflow weir (9) is 2.0 meters wide, and the top elevation is 2.0 meters; the purification tank (10) is 2.0 meters wide, 2.0 meters deep, and 6.0-15.0 meters long, filled with gravel with a particle size of 50-100mm, and the filling depth is 1.8 meters, and Aquatic purification plants (11) are planted on the upper part of the filling layer; the permeable weir (12) has a height of 1.8 meters and an arc structure with a radius of 1.0 meters.

(4) Install screen I (2) and screen II (4). Pool I (1) and pool II (3) are separated by screen I (2), pool II (3) and pool III (5) are separated by screen II (4), and pool I ( 1), the length ratio of pool II (3) and pool III (5) is 1:3:6; the partition I (2) and partition II (4) are all stainless steel meshes with an aperture of 5-10mm and a width of 2.0 meters , 2.0 meters high.

(5) Build a gas stripping reflux device (13). The airlift backflow device (13) is composed of a backflow pipe (14), an ultraviolet lamp (16), an aeration pan (17), a mud collection tank (18), a mud discharge valve (19) and an upflow pipe (20); the backflow The pipe (14) is composed of DN200mm PVC pipe, the elevation is 0.1-0.3m higher than the top elevation of the pool I (1), and a water receiving tray with a vertical upward inclination of 45° is set at the beginning, and the ultraviolet lamp (16) is located in the water receiving 50mm above the plate; the mud collecting tank (18) is located at the top of the riser pipe (20), with an inclination angle of 45°, and the collected sludge is discharged by the sludge discharge valve (19); the riser pipe (20) is composed of DN110mm PVC pipe, The height is 2.6 meters, and the aeration disk (17) is installed at a distance of 0.3-0.5 meters from the lower end; the diameter of the aeration disk (17) is 60-90 mm, and copper gas nozzles are evenly distributed along the surface area of the aeration disk (17).

(6) In order to ensure that the daily reflux water volume of the airlift reflux device (13) reaches 20% of the total volume of pool I (1), pool II (3), and pool III (5), the copper gas on the aeration plate (17) The nozzles are installed vertically upwards, the gas injection speed is 0.5-3.0m/s, and the number of gas nozzles is 5-10.

(7) In order to achieve high-density culture of Penaeus vannamei in separate ponds, the average seedling rate of pond I (1), pond II (3), and pond III (5) is 500-1000 fish/square meter; pond I (1 ) are put into the desalinated and thickened shrimp seedlings, which are transferred to the pond II (3) after one month in the forebay (1), and then transferred to the pond III (5 ), and sold after one month of cultivation in pond III (5).

(8) In order to realize the unobstructed mud discharge of the system, the settled sediment moves to the bottom of the retaining weir (7) along the slope of the bottom of the tank under the joint action of aeration disturbance and water flow, and finally collects in the sedimentation tank (8). And discharge through the mud discharge pipe at the bottom of the sedimentation tank (8).

(9) In order to ensure sufficient oxygen supply of the system, aeration heads (6) are installed in pool I (1), pool II (3), and pool III (5), and the installation density of aeration heads is 1/m.

(10) In order to realize the replacement of different cultivation stages of Penaeus vannamei in Pond I (1), Pond II (3), and Pond III (5), when the Penaeus vannamei in Pond III (5) is sold, remove the partition II (4), and slowly push the separation net I (2) downstream to the original position of the separation net II (4), drive the vannamei in the pool II (3) to the pool III (5); then, from the pool Start from the beginning of Ⅰ (1), slowly push the separation net Ⅱ (4) downstream, move the separation net Ⅱ (4) to the original position of the separation net Ⅰ (2), and transfer the vannamei in the pond Ⅰ (1) to pool II (3); finally, put the desalinated and thickened shrimp seedlings in pool I (1), and repeat the cycle.

(11) In order to ensure the safety of the return water quality, the air lift method is used to return the flow, which avoids the lack of dissolved oxygen in the return water. At the same time, the installation of the ultraviolet lamp (16) also realizes the disinfection of the return water.

(12) In order to effectively purify water quality, the biofilm covered on the surface of the filler in the purification pond (10) and the purification plant (11) can effectively remove ammonia nitrogen, nitrite nitrogen and total nitrogen in the water body.

(13) In order to improve the water quality purification ability of the system and increase the habitat area of Penaeus vannamei, combined fillers can be installed along the direction of water flow in ponds I (1), II (3) and III (5). The packing density is 2-4 per square meter.

(14) In order to further ensure the water purification ability of the system, the ratio of carbon, nitrogen and phosphorus in the water body can be maintained at 100:5:1 by adding slow-release carbon sources (rice husk, bamboo chips, wood chips, etc.)/brown sugar/honey and other high-carbon substances , build a stable biofloc micro-ecosystem, improve the decomposition and utilization efficiency of residual bait and feces, and the system's ability to purify ammonia nitrogen and nitrite nitrogen.

Claims (4)

1. A spiral zero-discharge Penaeus vannamei farming system, characterized in that: the system consists of pool I (1), partition I (2), pool II (3), partition II (4), pool III (5), retaining weir (7), sedimentation tank (8), overflow weir (9), purification tank (10), purification plant (11), permeable weir (12) and airlift backflow device (13). 2. A spiral type zero-discharge Penaeus vannamei culture system according to claim 1, characterized in that: the air lift reflux device (13) consists of a reflux pipe (14), an ultraviolet lamp (16), an aeration tray (17 ), mud collection tank (18), mud discharge valve (19) and riser pipe (20); the return pipe (14) is composed of DN200mm PVC pipe, and its elevation is 0.1-0.3 meters higher than the top elevation of pool I (1) , and a water receiving tray with a vertical upward inclination angle of 45° is installed at the beginning, and the ultraviolet lamp (16) is located 50mm above the water receiving tray; the mud collecting tank (18) is located at the top of the riser tube (20) The sludge is discharged by the sludge discharge valve (19); the upflow pipe (20) is made of DN110mm PVC pipe, the height is 2.6 meters, and the aeration pan (17) is installed at a distance of 0.3-0.5 meters from the lower end; the aeration pan (17 ) with a diameter of 60-90 mm, copper gas nozzles are evenly distributed along the surface area of the aeration disc (17). 3. A spiral type zero-discharge Penaeus vannamei culture system according to claim 1, characterized in that: Pond I (1), Pond II (3), and Pond III (5) are connected in series to form an integral structure with a width of Both are 2.0 meters, the top elevation is the same, both are 2.6 meters, the bottom is inclined from the beginning of Pool I (1) to the end of Pool III (5), the slope is 4%, the bottom elevation of Pool I (1) is 0.6 meters, and Pool III ( 5) The bottom elevation of the end is 0.0 meters; pool I (1) and pool II (3) are separated by screen I (2), and pool II (3) and pool III (5) are separated by screen II (4 ) separated, and the length ratio of pool I (1), pool II (3), and pool III (5) is 1:3:6; both grid I (2) and grid II (4) have an aperture of 5-10mm The stainless steel mesh is 2.0 meters wide and 2.0 meters high. 4. A spiral type zero-discharge Penaeus vannamei culture system according to claim 1, characterized in that: the bottom of the retaining weir (7) has a height of 200 mm and is opened into a mesh structure (15) with a mesh diameter of 10 mm; the sedimentation tank (8) There is a mud collection well at the bottom, and the bottom elevation of the mud collection well is -0.5 meters; the top elevation of the overflow weir (9) is 2.0 meters; the purification tank (10) is 2.0 meters deep, 6.0-15.0 meters long, and the filling particle size is 50-100mm gravel, the filling depth is 1.8 meters, and aquatic purification plants (11) are planted on the upper part of the filling layer; the permeable weir (12) has a height of 1.8 meters, an arc structure, and an arc radius of 1.0 meters.