258 results about "Marine aquaculture" patented technology

A high efficiency recirculating marine aquaculture process for producing fish at variable yield densities of up to 60 kg/meter3 of the aquaculture tank, including fish that spawn under short photoperiods such as gilthead seabream (Sparus aurata) as well as fish that spawn under long photoperiods such as striped bass (Morone saxatilis). The process involves broodstock conditioning, spawning/reproduction, larval growth, nursery, and adult grow-out operations. The process is characterized by high-rate growth at optimal process conditions requiring less than 10% daily water exchange, thereby enabling effluent waste from the system to be discharged to a municipal sewer after disinfection treatment, which in turn permits siting of the aquaculture process facility in urban/suburban locations where aquaculture processes have been previously infeasible.

The present invention relates to a recirculating marine aquaculture process for production of a crab species, including (i) a broodstock conditioning, (ii) spawning, (iii) egg incubation, (iv) larval growth, (v) nursery post-larval growth, and (vi) grow-out of the crab to a final product weight, in which each stage (i)-(vi) of the process involves operation in an aqueous medium that is coupled in liquid recirculation relationship with means for removing waste components from the aqueous medium and returning purified aqueous medium to the external environment. The process involves operation in a closed, recirculating aquaculture system in which photoperiod, water temperature, water chemistry, and diet are optimized and then continuously monitored and controlled to obtain optimal production at each of the six phases (i)-(vi) of the life cycle.

The invention discloses a multi-ecological niche bioremediation method of seawater aquiculture environment, which comprises the steps of draining aquiculture wastewater into an aquiculture trench, adding beneficial bacteria to remove nitrogen and phosphorous and convert organic matters on the first stage, culturing filter-feeding fishes and large-scale seaweed to form a multi-ecological niche biosphere coexisting microalgae, filter-feeding fishes and large-scale seaweed in the second stage, and allowing bioremediation of seawater aquiculture environment by utilizing different ecological niches of beneficial bacteria, microalgae, filter-feeding fishes and large-scale seaweed through synergic action of organisms. The inventive method can clean aquiculture wastewater to meet discharge standards, remediate aquiculture environment, and obtain fishes and large-scale seaweed, thereby bringing environmental, economic and ecological benefits.

The invention relates to a rising and falling marine aquaculture net cage and belongs to the technical field of marine aquaculture equipment, and aims at solving the unreasonable structural design ofthe existing marine aquaculture net cage, and poor ability to resist strong winds, sea waves and typhoons. The rising and falling marine aquaculture net cage adopts an internal and external floating pipe connecting frame is one-piece internal and external floating pipe plastic cladding steel connecting frame, the transverse end of the one-piece internal and external floating pipe plastic claddingsteel connecting frame is connected with an inner floating tube, the other end of the one-piece internal and external floating pipe plastic cladding steel connecting frame is connected with the outerfloating tube, the upper part of the longitudinal end is connected with a mast, a floating device is connected to the rope of the anchor rope by a connecting rope attached thereto, a buffer is attached to the rope body in the middle of the anchor rope, and the connecting ropes of a cage counterweight are all connected to the bottom of the net cage, and the outer floating tube is provided with 2-12pipe joints, the pipe joint is connected with a transfer nozzle, a water pump and an electric control valve, the water pump and the electric control valve are connected to a remote control by electrical signal line, the remote control and water pump are installed on a control platform. The rising and falling marine aquaculture net cage has the advantages that the structure is new and practical, and the rising and falling marine aquaculture net cage is suitable for marine and aquaculture such as lakes and rivers.

The invention discloses a nano-antibacterial low-surface energy organosilicon luminescence anti-fouling paint, which comprises the following components by weight: 25-35 parts of component A, 2-5 parts of component B and 1 part of component C; the component A comprises 25.0-50.0 parts of nano fluorescence pre-dispersion, 5-25.0 parts of organosilicon quaternary ammonium salt and 0.5-5.0 parts of silicone oil; the component B comprises 3.0-50.0 parts of crosslinking curing agent and 1.0-10.0 parts of silane coupling agent; The component C comprises 0.1-3.0 parts of catalyst; and the catalyst is at least one of stannous octoate, dibutyl tin diacetate and dibutyltin dilaurate. The paint has long persistence luminescent performance, has can prevent pollution by depending on fluorescence and enables contact sterilization, and has advantages of excellent antifouling performance, high strength and high adhesive force, can be used for various ships, sea petroleum platforms, marine structure and facility, marine aquaculture nets.

The invention relates to an indoor high-density cultivation method of artemia. Filtered seawater is injected into a culture pond to form artificial rich water; in the morning, artemia eggs are treated and then are rapidly placed in the culture pond for hatch, and the illumination intensity is kept at 30-60 mu mol/m<2>/s; artemia artificial food is put in the morning when artemia larvae are hatched; in the culturing process, the dissolved oxygen of a water body is kept at above 0.7mg/L; a biology control method is used for regulating and controlling water quality and adjusting the body color of the artemia; after 10-15 days of cultivation, the artemia is harvested according to the need of market. An indoor cultivation mode is adopted, outdoor severe weather is effectively avoided, better cultivation water environment can be kept, the rapid growth of the artemia is effectively improved by the regulation and control on the water quality and the water color and the preparation and treatment of the artificial food, the quality and output of the artemia are very obviously improved and increased, the food calling property is enhanced, and guarantee is provided for the development of marine aquaculture industry.

A submersible offshore marine aquaculture apparatus comprises a lower frame configured to suspend plumb bobs therefrom and to form a lower shape of the apparatus; and an upper frame configured to form an upper shape of the apparatus, and to support nets together with the lower frame. The upper frame includes a rim structure having an inner space to accommodate seawater or air therein, a fixed buoyant body disposed at the inner space of the rim structure so as to maintain a constant buoyancy (B0), and one or more valves configured to open and close the inner space of the rim structure so as to vary a buoyancy (B1) of the rim structure.

The invention discloses a Bacillus subtilis N2 with an ammonia nitrogen degradation function and application thereof. The Bacillus subtilis N2 is isolated from a shrimp culture water body. Studies confirm that the Bacillus subtilis N2 can quickly and effectively reduce the ammonia nitrogen content in the water body, and do not convert ammonia nitrogen into nitrite to cause stress or damage to a cultured object again. In addition, the Bacillus subtilis N2 and artemia gnotobiote tests show that at higher concentrations, a strain does not produce toxic effects on farmed animals, and has certain probiotic effects; the strain is more tolerant, a salinity and the environmental pH have little effect on bacterial growth, and regardless of being isolated from the freshwater or the seawater and theacid or the alkali environment, the strain N2 can grow well and function efficiently; it is of great significance in the marine aquaculture industry. The Bacillus subtilis N2 is inoculated into the aquaculture water body, the water quality is stable, the cultured object grows healthily, the adaptability is strong, and the safety is high. The strain can be used as a good strain of a novel microecological preparation and have a good application prospect.

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.

A recirculated marine aquaculture system for growing crustaceans within a body of water includes a wholly submerged chamber situated in the body of water having a filtering wall connecting the chamber floor and ceiling permitting water to flow from the water body into the first chamber while excluding particulate materials. A second chamber is situated above the first chamber having a plurality of water outlets below the body of water upper surface, and a top having an air inlet above the body of water upper surface. A stand pipe has an open lower end opening into the first chamber and a plurality of laterally directed openings into the top of the second chamber. An impeller coupled to the stand pipe moves filtered water from the first chamber through the laterally directed openings into the second chamber adjacent to the air inlet, the water exiting the second chamber into the body of water through the plurality of water outlets after mixing with air drawn in through the air inlet.

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 comprehensive multi-trophic-level marine cage aquaculture system device and an aquaculture method. An annular peripheral float floats on the sea surface, and a fish aquaculture cage is fixedly arranged at the lower inner edge of the annular peripheral float. A loading plate is horizontally suspended below the fish aquaculture cage and provided with pulling rope through holes. A sea cucumber aquaculture tank is put on the loading plate, and a plurality of independent sea cucumber aquaculture cages are arranged in the sea cucumber aquaculture tank. Upper ends of the pulling ropes are fixed to the peripheral float, middles of the pulling ropes are tied to the sea cucumber aquaculture tank, and lower ends of the pulling ropes movably penetrate the pulling rope through holes to be fixed to a first sinker. A plurality of anchor ropes for fixing the peripheral float at a set position are arranged on the peripheral float and provided with floaters, and partition plates are movably inserted in abalone aquaculture cages which are suspended on the anchor ropes. By reasonable matching and cyclic mutualism of co-cultured organisms in different trophic levels, negative effects caused by pollution problems of traditional marine aquaculture industry are alleviated, and the problem of pollution caused by a single mode in cage aquaculture is solved.

The invention discloses a marine surfactant-producing bacterial strain. The bacterial strain belongs to Salinicolasp., and is preserved on October 29th,2012 with the preservation name of Salinicolasp.LHOD-1 and the preservation serial number of CGMCC No.6715 in China General Microbiological Culture Collection Center (CGMCC). The bacterial strain has the ability of producing surfactant, has stronger emulsion effect to petroleum hydrocarbon contamination in seas, can help to remove the petroleum hydrocarbon contamination in sea water, and has no positioning and pathogenic action to mariculture organisms.

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 an arthrobacter with aerobic denitrification capability and application thereof and belongs to the technical field of microorganism application. The arthrobacter DYS3-4 with aerobic denitrification ability is preserved in the China Center for Type Culture Collection, the preservation date is 29th, April, 2015 and the preservation number is CCTCC M 2015 264. The arthrobacter DYS3-4 can be applied to nitrogenous effluent biological denitrification, mariculture nitrite removal, freshwater aquaculture nitrite removal and low temperature denitrification microorganism preparation. Under an aerobiotic condition, the nitrate and the nitrite in the water environment can be rapidly and effectively removed. The arthrobacter growth temperature scope is wide, the denitrification effect at the temperature of 10-35 DEG C is good, and the arthrobacter has good application prospect in the nitrogenous effluent biological denitrification and the freshwater aquaculture nitrite removal.

The invention discloses a bacterial inhibition type water purifier for marine aquaculture and a preparation method thereof. The bacterial inhibition type water purifier is prepared from filtering and drying a fermentation solution containing bacillus subtilis YB-01 CGMCC-No.9756 and brevibacillus laterosporus YB-02 CGMCC-No.9757. The strain of the water purifier is bacillus separated from a seawater source and has an excellent water purification effect and bacterial inhibition effect; the water purifier is a mixture containing bacteria and spores; the water purifier is long in preservation period and can quickly grow after entering the water; especially, the water purifier is regularly sprayed in seedling periods and developing periods of stichopus japonicas, turbot and fugu rubripes; the harmful materials such as ammonia nitrogen, nitrite and hydrogen sulfide in the marine aquaculture water can be quickly degraded; the heavy metal ions in bottom mud can be efficiently adsorbed; deterioration, acidification and smelly bottom mud of the water can be avoided; the growth of pathogenic bacteria in the marine aquaculture can be inhibited; diseases can be effectively prevented.

The invention relates to an ecological treatment circulatory system for discharge water of a sea farming pond. The ecological treatment circulatory system is characterized by comprising an ecological water diversion ditch, wherein the beginning end of the ecological water diversion ditch is communicated with water in an offshore sea area; seawater is introduced through ebb and flow; a gate is also arranged, and the tail end of the gate is communicated with the beginning end of an ecological gravel bed through an overflow pipe; the tail end of the ecological gravel bed is communicated with the beginning end of a pre-positioned reservoir through an overflow pipe, and the tail end of the pre-positioned reservoir is communicated with the beginning end of a sea farming pond through an overflow pipe; the lower part of the tail end of the sea farming pond is communicated with the upper part of the beginning end of the ecological water diversion ditch through a water drainage pipe, and a water pump is arranged to provide drainage power; gravels with different particle sizes are arranged from the bottom up from the big to the small on the ecological gravel bed, and water plants are planted at the top; the pre-positioned reservoir is divided into a deep water area, an ecological floating bed area and a water source area from the beginning end to the tail end, of which the water depths are gradually reduced, sunken plants are planted in the deep water area, and an ecological floating bed is arranged in the ecological floating bed area.

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 mixed packed bed biological aerated filter sewage treatment device and a mixed packed bed biological aerated filter sewage treatment method, and relates to sewage treatment. The device is provided with a water inlet tank, a lifting pump, an air blower, a biological filter column and an aerator, wherein a water outlet of the water inlet tank is connected with an inlet of the lifting pump; the biological filter column is provided with a column body, a support plate, a water inlet and a water outlet; the outlet of the lifting pump is connected with the water inlet; the water inlet is formed in the bottom of the column body; the support plate is arranged above the water inlet; one ore more through holes for water distribution are formed in the support plate; a mixed filler is filled on the support plate in the column body; the water outlet is formed in the top of the column body; sampling ports are formed in the column body; an air outlet of the air blower is connected to the aerator at the bottom of the column body. Marine culture wastewater in the water inlet tank flows into the bottom of the biological filter column under the action of the lifting pump, and flows out of the water outlet in the top of the biological filter column after passing through the mixed packing. The growth of microorganisms is facilitated, and certain calcium carbonate can be released by seashell biological ceramsite in a running process to buffer the pH and ensure an environment required by the nitrification of the microorganisms.

Disclosed is a perinereis aibuhitensis totally-artificial breeding technology. The technical processes of the perinereis aibuhitensis totally-artificial breeding technology include the steps of parent perinereis aibuhitensis selection, indoor cement pit culturing, daily management, sexual maturity, artificial regulation for breeding, centralized hatching, young perinereis aibuhitensis breeding, soil pool breeding, culturing management and harvesting. Through research on perinereis aibuhitensis domestication breeding, artificial parent perinereis aibuhitensis cultivation, the artificial insemination method, young perinereis aibuhitensis production and large-scale cultivation, the perinereis aibuhitensis artificial cultivation and artificial breeding technologies and the perinereis aibuhitensis production processes are formed, the problems that young perinereis aibuhitensis supply is not enough and limited by seasons are solved, perinereis aibuhitensis fertilization rates, hatchability which is about 60% and young perinereis aibuhitensis survival rates are improved, and guarantees in quality and quantity are provided for artificial breeding in the future; furthermore, the perinereis aibuhitensis totally-artificial breeding technology has significance in conducting large-scale perinereis aibuhitensis cultivation, improving cultivation structure adjustment, increasing income of fishermen and guaranteeing the sustainable development of the marine aquaculture industry.

The invention discloses a vibrio alginolyticus bacteriophage preparation and a preparation method and application thereof. Auxiliary agents such as vibrio alginolyticus bacteriophage Vp670 and trehalose are adopted for developing the corresponding bacteriophage preparation. After application, the bacteriophage preparation continuously exists in a water environment for a long time to keep quantitybalance of pathogenic host bacteria and bacteriophage, so that effect durability and low consumption are achieved as compared with those of antibiotics. The bacteriophage Vp670 preparation is free oftoxic and side effects, is a novel green biological sterilization preparation and can be used for prevention and control of vibrio alginolyticus infection of animals in marine aquaculture to promote healthy development of the aquaculture industry.