The main facilities for industrialized seedlings of bay scallops include nursery ponds, bait ponds, feed preservation rooms, sedimentation tanks, water purification and warming pools, pump rooms, filters, heating equipment, inflatable equipment, water supply and drainage pipes, and power generation equipment. .
(1) Nursery pond: used for pro-shelled shellfish, egg-picking hatching and larvae breeding, better insulation performance, more than 500 cubic meters of water in the nursery room, nursery pond specifications of not less than 30 cubic meters, water depth of 1.5 meters is appropriate, pond Small, numerous, and inconvenient to manage.
(2) Feed pool: used for single cell feed bioculture. The ratio of bait culture water body to nursery water body is 0.5:1, and the bait pool is divided into secondary pool and tertiary pool. The secondary tank size is generally 0.5 cubic meters, and the tertiary pool is 3-5 cubic meters. The effective depth is 0.5-0.6 meters. The water ratio of the secondary pool to the tertiary pool is better than 0.07:1. The temperature and light requirements of the bait culture are relatively strict. Therefore, the bait house not only has better insulation performance, but also has sufficient lighting, and the lighting surface of the roof and walls should be about 2/3. In order to facilitate bait delivery and reduce floor space, the bait chamber is preferably built on top of the cultivating plant.
(3) Bait species protection room: used for bait conservation and first-class culture. For the first-stage cultivation of multi-use conical flasks with a capacity of 5 liters, usually no less than 2 flasks are used per cubic meter of water in the flask.
(4) Sedimentation tank: The precipitation used for straight seawater pumping. The ratio of the sedimentation tank water body to the nursery pond water body should be determined by the turbidity of the water in the sea area. Generally it should be more than 2 times of the water in the nursery pond, which needs to be used interchangeably. The sedimentation tank should be divided into several compartments.
(5) Net pool and warming pool: It is used to store filtered clean seawater and seawater temperature. Net water temperature used. The total water capacity of the net pool should not be less than 1/2 of the total number of nursery ponds, and should be divided into two or more grids for the convenience of alternate use. The net pool should maintain the necessary height difference with the nursery pond so that it can self-flow.
(6) Pump house: Usually divided into a pump and a second pump, a pump pumping seawater to a sedimentation tank; the second pump pressurizes the precipitated seawater into a filter tank and presses it into a net tank.
(7) Filter: It is used to filter precipitated seawater. There are two kinds of filters commonly used. One is a filter tank and the other is a filter tank. The filter materials are all fine sand with a particle size of 0.1-0.2 mm. The pool uses the gravity difference between the sedimentation basin and the net basin to filter by gravity. The filtration speed is relatively slow, the land area is large, and the terrain is also difficult to choose. Therefore, most of the filtration tanks are currently used.
(8) Heating equipment: It is used to warm seawater and nursery rooms, bait rooms, and breeding rooms. In a nursery for 500 cubic meters of water, one boiler with an evaporation capacity of 2 tons/hour is required. Seawater heating methods are closed and open. The sealed type releases heat through a potentiometer coil located at the bottom of the warming tank. The open type directly injects steam into the water, and the open heating is fast, but the fresh water consumption is large and the water quality is not as stable as the closed type.
(9) Inflatable equipment: It is used for pro-tomotherapy, bait, and larvae for oxygenation. The commonly used oxygenation equipment is a Roots blower with an air volume of 5 cubic meters per minute, which can meet the needs of 500 cubic meters of nursery water.
(10) Water Supply and Drainage Pipes: In addition to the use of cast iron pipes or seamless steel pipes in addition to a pump, all other water supply pipes should adopt polyvinyl chloride pipes. Each nursery pond is preferably equipped with one set of heated seawater and one outlet of normal temperature seawater, which is used to allocate water temperature. The bottom of nursery ponds and bait ponds shall be provided with drainage holes. Wastewater shall be discharged through the drainage ditch. The drainage ditch shall be less than 50-60 cm below the bottom of the pool.
(11) Power generation equipment: It is used for temporary power supply during power outages.
(1) Nursery pond: used for pro-shelled shellfish, egg-picking hatching and larvae breeding, better insulation performance, more than 500 cubic meters of water in the nursery room, nursery pond specifications of not less than 30 cubic meters, water depth of 1.5 meters is appropriate, pond Small, numerous, and inconvenient to manage.
(2) Feed pool: used for single cell feed bioculture. The ratio of bait culture water body to nursery water body is 0.5:1, and the bait pool is divided into secondary pool and tertiary pool. The secondary tank size is generally 0.5 cubic meters, and the tertiary pool is 3-5 cubic meters. The effective depth is 0.5-0.6 meters. The water ratio of the secondary pool to the tertiary pool is better than 0.07:1. The temperature and light requirements of the bait culture are relatively strict. Therefore, the bait house not only has better insulation performance, but also has sufficient lighting, and the lighting surface of the roof and walls should be about 2/3. In order to facilitate bait delivery and reduce floor space, the bait chamber is preferably built on top of the cultivating plant.
(3) Bait species protection room: used for bait conservation and first-class culture. For the first-stage cultivation of multi-use conical flasks with a capacity of 5 liters, usually no less than 2 flasks are used per cubic meter of water in the flask.
(4) Sedimentation tank: The precipitation used for straight seawater pumping. The ratio of the sedimentation tank water body to the nursery pond water body should be determined by the turbidity of the water in the sea area. Generally it should be more than 2 times of the water in the nursery pond, which needs to be used interchangeably. The sedimentation tank should be divided into several compartments.
(5) Net pool and warming pool: It is used to store filtered clean seawater and seawater temperature. Net water temperature used. The total water capacity of the net pool should not be less than 1/2 of the total number of nursery ponds, and should be divided into two or more grids for the convenience of alternate use. The net pool should maintain the necessary height difference with the nursery pond so that it can self-flow.
(6) Pump house: Usually divided into a pump and a second pump, a pump pumping seawater to a sedimentation tank; the second pump pressurizes the precipitated seawater into a filter tank and presses it into a net tank.
(7) Filter: It is used to filter precipitated seawater. There are two kinds of filters commonly used. One is a filter tank and the other is a filter tank. The filter materials are all fine sand with a particle size of 0.1-0.2 mm. The pool uses the gravity difference between the sedimentation basin and the net basin to filter by gravity. The filtration speed is relatively slow, the land area is large, and the terrain is also difficult to choose. Therefore, most of the filtration tanks are currently used.
(8) Heating equipment: It is used to warm seawater and nursery rooms, bait rooms, and breeding rooms. In a nursery for 500 cubic meters of water, one boiler with an evaporation capacity of 2 tons/hour is required. Seawater heating methods are closed and open. The sealed type releases heat through a potentiometer coil located at the bottom of the warming tank. The open type directly injects steam into the water, and the open heating is fast, but the fresh water consumption is large and the water quality is not as stable as the closed type.
(9) Inflatable equipment: It is used for pro-tomotherapy, bait, and larvae for oxygenation. The commonly used oxygenation equipment is a Roots blower with an air volume of 5 cubic meters per minute, which can meet the needs of 500 cubic meters of nursery water.
(10) Water Supply and Drainage Pipes: In addition to the use of cast iron pipes or seamless steel pipes in addition to a pump, all other water supply pipes should adopt polyvinyl chloride pipes. Each nursery pond is preferably equipped with one set of heated seawater and one outlet of normal temperature seawater, which is used to allocate water temperature. The bottom of nursery ponds and bait ponds shall be provided with drainage holes. Wastewater shall be discharged through the drainage ditch. The drainage ditch shall be less than 50-60 cm below the bottom of the pool.
(11) Power generation equipment: It is used for temporary power supply during power outages.