136 results about "Marine culture" patented technology

The invention provides a compound Chinese herbal medicine immunopotentiator for fish, containing by weight of: 40-50% of astragalus, 10-20% of angelica, 15-20% of glycyrrhiza, 5-10% of hawthorn, 5-12% of honeysuckle and 5-12% of isatis. Advantages of the invention is that: (1) the immunopotentiator of the invention has no adverse effect on palatability of feedstuff, (2) body immunity of culture fishes can be substantially enhanced, and immunoprotection rate to fresh water aquiculture fishes and marine culture fishes reaches to 65-71%, and (3) growth of pathogenic bacteria like escherichia coli in intestinal tract of culture fishes can be substantially restrained, growth of fish can be promoted rapidly, and weighting rate and disease resistance of culture fishes can be raised. The immunopotentiator is suitable for various of culture fishes, has a broad future, and is easy for industrialization.

The present invention relates a rope-type sea-water culture net cage which can be conveniently lifted upwards and fallen downwards. It includes the following several portions: net cage frame system consisting of main floats, rope frame, marker float and marker float rope; net bag system composed of net bag, bottom frame and sinker; and gappling system formed from grapnel and rope. Besides, said invention also includes a net cage lifting and falling control system formed from control float, control float rope and control sinker.

The invention discloses a composite bacillus preparation applied to improving the aquatic environment of mariculture, and a making method thereof. The preparation is made by mixing Bacillus subtilis, Bacillus licheniformis, Bacillus cereus and Bafillus natto according to certain ratio, and under room temperature, the active microorganism is in resting state and the preparation is stable and easy to be preserved. After the composite bacillus preparation is put into mariculture water, the dormant bacteria can be back to normal quickly, degrade residual bait, dejection, fertilizer, biological residual bodies and other organic contaminant fast, reduce the content of ammonia nitrogen, nitrite and COD in the culture water and reproduce to be predominant bacteria in the water quickly so as to further restrain the putrefying bacteria from reproduction, improve the environment of the culture water and purify the water. The preparation of the invention is safe, contains no pollution nuisance and residual, can obviously improve the environment of the culture water, and meanwhile, the immunity of aquatic livestock can be improved.

A microfilter for removing the particles suspended in water used for marine culture is composed of a filter drum covered by a screen net and with a rotary shaft, a motor connected to the said rotary shaft for making the filter drum rotate, a back-flushing unit above the said filter drum for removing the particles from the said screen net, and the back-flushing channel for collecting the backflushing water and draining it.

The invention discloses a deep sea culture platform integrating marine leisure traveling fishing tour and sightseeing. The conventional marine fishing mode and the design, building and use mode of a conventional culture net cage are changed; the marine renewable energy source power generation is used and is supplied for a culture net box to be used for production; various kinds of mechanical equipment for marine culture, bait feeding, fish collecting and the like are carried; the net box culture and the marine fishing traveling are ingeniously combined; the multifunctional deep sea culture platform is formed.

The invention provides a method for using artificial wetlands for processing the waste water in circular seaculture, which comprises the following steps: the waste water is first filtered by a microstrainer and then led to an artificial wetland for treatment; the artificial wetland is in the form of a horizontal undercurrent packed bed and is divided into a front anaerobic zone and a back aerobic zone, the surface area ratio of which is 1-2:4-3, no plants are in the filler of the anaerobic zone while salt tolerant plants are planted in the filler of the aerobic zone; the effluent from the microstrainer sequentially flows through the anaerobic zone and the aerobic zone to be discharged, and the water flowing to the anaerobic zone contains the water flowing out of the aerobic zone. The artificial wetland provided by the invention is capable of seawater processing, denitrification, denitrogenation and dephosphorization, and can effectively process the suspended matters, organic matters, nitrogen, phosphorus and the like in the sewage flowing through the artificial wetland in multiple ways and cause the effluent quality to reach the water quality standard requirements of fishery industry of China, thus realizing the aim of recycling the effluent. Compared with the prior art, the invention has the advantages of good treatment effect, low cost and environment protection but no pollution.

The embodiment of the invention provides an extraction method and system for the outer boundary of a marine culture area. The method comprises the following steps: acquiring satellite remote sensing source data; inputting the satellite remote sensing source data into a pre-trained marine culture area extraction model after the satellite remote sensing source data is processed by a preprocessing program, and obtaining a culture area extraction result output by the marine culture area extraction model, wherein the mariculture area extraction model is obtained by training based on satellite remote sensing sample set images and precision grade labels obtained by classification according to a remote sensing precision identification standard. According to the embodiment of the invention, the monitoring advantages of the satellite remote sensing technology are fully utilized, and the currently widely used deep learning model is combined, so that the purpose of real-time, large-range, accurateand automatic monitoring of the maximum outer boundary of the marine culture area can be achieved.

The invention is a bioremediation method of eutrophication in semi-tropical marine fish cage culture region, relating to the cultivation of a kind of edible seaweed, especially the water cultivation nearby or in the fish cage for the bioremediation of the eutrophication. Its steps: selecting algae seeds and breeding them in seawater, where the initially-bred biomass density is less than 800 kg/mu; collecting as the biomass density greater than 1000 kg/mu and then the biomass density is less than 600 kg/mu. The bioremediation hanging culture raft is provided with at least two parallel-arranged poles, the end parts of these poles are connected by ropes or brackets into a frame boby, there are stakeropes between poles, and the frame body are provided with at least 1 supended body and fixed by at least four fixing ropes. It combines algae cultivation with fish cage culture for mixed culture, used for bioremediation of eutrophication of marine culture.

The invention relates to an artificial mixed breeding method for spotted maigre and large yellow croaker in marine aquaculture industry, and belongs to the technical field of marine culture. The breeding method includes the following steps, firstly pond-separated breeding maturation accelerating and parturition hastening of parent fish; secondly, same-pond breeding of spotted maigre and large yellow croaker fry; and thirdly, fry separating that's carried out through siphonage after the fry grows to be 2 to 3 cm in length. The pond-separated breeding maturation accelerating and parturition hastening of parent fish includes the maturation accelerating of the spotted maigre and the maturation accelerating of the large yellow croaker, and both the maturation accelerating of the spotted maigreand the maturation accelerating of the large yellow croaker include parent fish breeding and gonad maturation accelerating and parturition hastening. The same-pond breeding of spotted maigre and large yellow croaker fry includes same-pond hatching of the fertilized eggs of the spotted maigre and the large yellow croaker, prelarva prior period growing management, prelarva later perior growing management, postlarva period growing management and water quality regulation and control. 1.5 kg of fertilized eggs of the spotted maigre and the large yellow croaker are thrown into a mud pond of 32m<2>,and 696, 7000 juvenile fishes of 2 to 3 mm are bred at last, and the breeding rate per unit area is 2300/m<2>, as a result, the utilization rate of the breeding pond is greatly improved and the breeding cost is reduced.

The invention relates to the field of marine culture, and particularly relates to a microecological preparation suitable for the marine culture and application thereof. The microecological preparation is a compound microecological preparation which is compounded of bacillus subtilis, bifidobacterium, lactobacillus acidophilus and photosynthetic bacteria according to viable bacterium biomass. According to the invention, by optimally compounding multiple probiotics, a microbial inoculum compounding mode capable of effectively inhibiting the growth of aquatic harmful bacteria and reducing the influence of wastes such as residual baits and excrements of cultured species on a culture environment in a culture process can be screened out under the precondition that the growth properties of cultured species are not reduced, thus providing the scientific basis for reducing the occurrence rate of aquatic diseases by utilizing the probiotics and reducing the environmental pollution brought by a culture process. An experiment result shows that the compound microecological preparation can be used for inhibiting the common aquatic pathogenic bacteria and effectively reducing the content of ammonia nitrogen, nitrite nitrogen and total phosphorus which are contained in the culture wastes.

The invention discloses a marine culture device equipped with a feed recovery drum. The marine culture device comprises a cylindrical culture box used for culturing, wherein the bottom part of the interior of the culture box is separated into the feed recovery drum through a partition plate; the marine culture device also comprises a feed distribution mechanism used for feeding a feed; a stirringbox is connected with and arranged above the feed distribution mechanism through a conveying pipe; the upper part of the stirring box is connected with a feeding hopper; one side of the interior of the feed recovery drum is connected with a water conveying pump; and the other side of the interior of the feed recovery drum is connected with a collection pipe which is connected with a liquid suctionpump. The marine culture device provided by the invention can effectively solve the death of a cultured animal due to turbidity of a culture water body, effectively improves the survival rate of thecultured animal, and can realize controllable feeding and recycling of the feed.

The invention discloses a device and method for removing ammonia nitrogen, nitrite nitrogen and COD in marine culture wastewater. A water inlet is formed in the top end of an impounding reservoir of the device and communicated with a water outlet in the upper end of an electrochemical reactor, and a water outlet is formed in the lower end of the impounding reservoir and connected with a water inlet in the lower end of the electrochemical reactor. An anode, a bipolar electrode and a cathode are sequentially arranged in the electrochemical reactor through a peristaltic pump, the anode is connected with a positive electrode of a direct-current stabilized power supply, and the cathode is connected with a negative electrode of the direct-current stabilized power supply. A chemical agent does not need to be added, and thus treatment cost can be greatly reduced; free chlorine is constantly generated in situ at the anode, and thus safety performance is improved; the treatment process is clean and quick, and sludge and secondary pollution are avoided; the ammonia nitrogen, nitrite nitrogen and COD removing speed is high, and efficiency is high; only the current size needs to be controlled, and thus control is easy; the device is simple and convenient to operate and maintain.

The invention discloses a lifting net cage suitable for marine culture. The net cage comprises a plate body. The periphery borders are arranged at the edge of the inner side surface of the plate body. A guide hole is arranged in the center of the plate body. A button rod is arranged in the guide hole in a sliding mode. The end protruding out of the plate body, of the button rod is provided with a reset button. An annular press strip is arranged at the end surface of the periphery borders. An annular sealing groove is formed in the end surface of the annular press strip. Several positioning blind holes are formed in the length direction of the bottom surface in intervals, the positioning blind holes are in the forms of an inverse frustum, an elastic sealing gasket is arranged in the annular sealing groove. A gap exists between the sealing gasket and the side surface of the annular sealing groove. The positions corresponding to the blind holes, of the bottom surface of the sealing gasket are provided with positioning nails which are matched with the positioning blind holes. The positions corresponding to the positioning nails, of the front surface of the sealing gasket are provided with installation blind holes which extend into the positioning nails. The invention brings convenience to the installation of a control panel, guarantees the correct positioning of the sealing gaskets, at the same time, the reset button can flexibly function, and the service life of sealing parts can be prolonged.

The invention discloses a double-body movable culture work ship. The ship is characterized by comprising a first ship body, a second ship body and a plurality of lifting net cages, wherein the first ship body and the second ship body are oppositely arranged at the side faces of the ship and used for providing main buoyancy, and the lifting net cages are arranged between the first ship body and thesecond ship body and connected with the two ship bodies; and closed circulating water industrial aquaculture of small-size fishes is carried out in the two ship bodies, and wild aquaculture of large-size adult fishes is carried out in the lifting type net cages in a relaying manner. According to the ship, the advantages of a closed culture mode and an open culture mode are organically integrated,and offshore wild culture from the small fries to the adult fishes is achieved. Compared with open type net cage culture, marine culture can be started from the small-specification fish fries, the pressure of land or near-shore net cage culture on the environment is reduced, and meanwhile the marine transportation cost of large-specification fishes is reduced; and compared with full-closed type culture, the ship has the advantages that low-density open type wild culture is adopted in later-stage culture, and the quality and selling price of bred fishes are higher.

Disclosed are cross-flow membrane filtration methods for the removal or separation of algal cells from an aqueous environment. The methods of the invention may be used for the simultaneous algal harvesting/dewatering and water/wastewater purification and recycling.

The invention relates to an experimental technology of marine animal ecology, in particular to an on-site measurement method and a device for biological sedimentation of buried double-shell shellfishes. The on-site measurement method for biological sedimentation of buried double-shell shellfishes is that: 1) the buried double-shell shellfish organisms are buried in a container containing the sand, one end of a water inlet and outlet pipe of the animals is upward buried in the sand as an animal experiment group; at the same time, the invention is provided with a control group which only arranges the sand in the container and does not arrange the experimental animals; 2) the container with the organisms is fixed in the marine culture environment to be cultured for 4 to 5 days; 3) all the devices are taken out, the sediments are collected, the invention adopts a siphon method to absorb the marine water which is covered on the sediments, and then the desalination and drying are carried out; 4) the biological sedimentation rate (BDR is equal to (Ds - Dc) divided by (N multiplied by t))o is calculated; by adopting the invention, the ecological habits of the buried double-shell shellfish organisms are given full consideration and the biological sedimentation of the buried double-shell shellfishes can be accurately measured on-site.

The invention relates to a method for controlling lichen in a marine culture pond, which is characterized in that: more than two fixed boom cables are arranged horizontally in the culture pond along the flow direction of the water in the culture pond; two ends of each of the two fixed boom cables are fixed with the bottom of the pond through fixtures; a plurality of buoys are fixed on the bodies of the fixed boom cables between two fixed ends; a plurality of strands of seedling rope are tied between the two adjacent fixed boom cables; and alga seedlings which are gracilaria seedlings or sargasso seedlings are clamped between the strands of the seedling ropes. The marine large algae cultured in a hanging manner can shade sunlight, improve the physical and chemical indexes of the pond, provide a comfort water temperature and good growth environment for cultured varieties, effectively suppress the growth of the lichen and reduce culture cost. The method is reasonable, low in cost, simple and feasible in operation, allows the aquatic products to growth quickly, and achieves a high survival rate of the aquatic products.

The invention discloses a seaculture wastewater denitrification purifying method for purifying discharged wastewater of a seaculture system by utilization of home-grown sludge of the seaculture system, which is simple to operation, has low cost, and does not cause secondary pollution. The method comprises: taking sludge at the bottom of a settling tank in a seawater circulating water fish-farming system and preparing hydrolytic sludge through anaerobic cultivation and acclimation; mixing the hydrolytic sludge and a culture solution, and preparing denitrified active sludge through anaerobic cultivation and acclimation; mixing the hydrolytic sludge and seaculture wastewater according to the volume ratio of 1 to 8-10, and preparing an anaerobic solution of the seaculture wastewater, wherein the hydrolysis temperature is between 18 and 22 DEG C, the pH value is between 6 and 7, and the hydrolysis time is between 8 and 10 hours; and mixing the denitrified active sludge and the anaerobic solution of the seaculture wastewater according to the volume ratio of 1 to 3-5, and performing denitrification reaction under the conditions that the temperature is between 18 and 22 DEG C and the pH value is between 7 and 8.

The invention discloses a multi-pile cushion cap offshore wind power foundation based marine culture net cage structure. The structure includes a cushion cap, a pile foundation structure for supporting the cushion cap, a middle net cage surrounding the pile foundation structure, an inner net cage arranged in the middle net cage and an outer net cage externally hooked on the pile foundation structure. Through the provided structure, the supporting effects of offshore wind power foundation can be fully utilized, so that the structure can be more stable and firmer, and the building and maintenance costs of sea ranches can be greatly saved.

A process for preparing plant fertilizer through mariculture comprises the steps of, air-drying mariculture sludge and the pond sludge in cane sugar factories, subjecting the cultivation sludge to eluting desalinization, mixing the eluted sludge with the air-dried pond sludge by the mass ratio of 2:5, controlling humidity between 50%-60% (mass ratio), agitating and ventilating 5-15 minutes each day, fermenting 20 days at 35 deg. C-45 deg. C, air-drying to obtain the halophytic vegetation fertilizer.

The invention relates to an amphioxus endonuclear protein, and an expression gene and application thereof. The nucleotide sequence of the expression gene of the amphioxus endonuclear protein AmphiAkirin is disclosed as SEQ ID NO.1; and the amino acid sequence of the amphioxus endonuclear AmphiAkirin is disclosed as SEQ ID NO.2. The expression gene provided by the invention is beneficial to theoretically enhancing the recognition on immune system composition and immune response mechanism, and lays the foundation for producing and developing new marine culture anti-parasite vaccines on the gene level.

The invention discloses an attapulgite water purifying agent for quickly purifying a marine culture water body. The technical scheme is characterized in that the quick marine culture water purifying agent is mainly composed of attapulgite clay and rice hull. The water purifying agent is prepared through the following steps: performing PICT (pressure-shear induced chemical transitions) pulverization, soaking, stirring, extruding, drying, screening, and packaging to obtain the finished product. In the adsorptive water purifying process, the specific surface area of attapulgite is increased through a PICT technology, thus removing granular and colloid pollutants through adsorption, and effectively removing harmful substances such as key pollutants phosphorus, ammonia nitrogen, COD (chemical oxygen demand) and the like causing eutrophication of a water body. Big electrostatic attraction power and stress fields are formed outside the attapulgite modified through the PICT technology, so that the ion-exchange property is enhanced, thereby being more beneficial to adsorptive purification of harmful substances such as Hg<2+>, Pb<2+>, Cr<6+>, Cd<2+>, Cu<2+>, other heavy metal ions and the like in the water. Thus, the attapulgite water purifying agent is applicable to purification and filtration such as quick ammonium reduction, nitrogen, phosphorus and COD removal, heavy metal adsorption and the like in the marine culture process, and is also applicable to purification of a marine aquarium fish water body.