160 results about "Recirculating aquaculture system" patented technology

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.

An aerated recirculated aquaculture system including a culture tank and an aeration and circulation system. The culture tank houses live aquaculture. The culture tank defines a first flow path. The aeration and circulation system includes an aeration device configured to aerate water. The aeration device defines a second flow path. The first flow path and second flow path at least partially defining a substantially closed flow path sequentially passing through the culture tank and the aeration device. The aeration and circulation system is configured to circulate the water around the substantially closed flow path.

A photoelectrocatalytic oxidizing device having a photoanode being constructed from an anatase or rutile polymorph of Ti as the support electrode. Alternatively, the photoanode is a composite electrode comprising an anatase or rutile polymorph of Ti as the support electrode coated with a thin film of sintered nanoporous TiO2 derived from a stable, dispersed suspension of nanoparticulate TiO2. The device being useful for removing ammonia, protein and other contaminants from water in aquariums and aquacultures thereof. The device being cylindrical in shape and having a flow-through configuration. The method being directed at reducing the amount and concentration of ammonia in an aquarium or aquaculture system comprising providing an aqueous solution comprising water, NH3, NH4+ and 1 ppb to 200 g / L NaCl, and, photoelectrocatalytically oxidizing the NH3 and NH4+ to produce N2 gas, NO2− and NO3−, wherein the NH3 and NH4+ are oxidized on the surface of a photoanode constructed from an anatase polymorph of Ti, a rutile polymorph of Ti, or a nanoporous film of TiO2.

The present invention relates to a two-stage biofilter reactor system for removing nitrogenous compounds from a recirculating aquaculture system. The system includes a aerobic nitrification unit and a downstream anaerobic denitrification unit, wherein both units have a mobile bed of suspended media whereon bacteria can grow and reduce nitrate and / or ammonia levels in the recirculating aquaculture system. Use of the two-stage system has the advantage of reducing the water exchange rates and consumption of salt when maintaining a saline effluent.

The invention relates to a water and sewage drainage facility for an industrial recirculating aquaculture system, which is suitable for respectively draining the circulating water and sewage containing large particles such as residual lure, feces and the like in a closed recirculating water system which is used for culturing fish and shrimps. A central culture pond water drainage pipe of the facility is arranged in the center of the culture pond; sewage drainage holes are arranged at the bottom of the center of the culture pond; the central culture pond water drainage pipe is fixed above the sewage drainage holes, and the pipe wall of the water drainage pipe is provided with small drainage holes; the upper end of the central culture pond water drainage pipe is connected with a filter cap, and the lower end thereof is a spigot-and-socket joint pipe that extends into a sewage drainage groove; the culture water flows into a water treatment pipe network outside the pond through the water drainage pipe; a sewage drainage clearance control panel is installed at the bottom of the central culture pond water drainage pipe, and the clearance between the panel and the bottom of the pond can be adjusted by rotating the sewage drainage clearance control panel; the sewage at the bottom of the culture pond flows into the sewage drainage groove through a clearance between the sewage drainage clearance control panel and the pond bottom and then flows out of the system. The facility has the characteristics of no energy consumption, automatic drainage of culture water, independent water and sewage drainage, practicality, convenience and the like.

The invention discloses a seawater recirculating aquaculture system which comprises a fish pond, an oxygen dissolving tank, an aeration aerator, a first microorganism purifying pond, a second microorganism purifying pond, a rapid filter, a full automatic microstrainer, a protein separator, a temperature adjusting pond, an ultraviolet sterilizer, a water quality monitoring system and a circulation pump. The water quality monitoring system comprises a single chip microcomputer and a sensor. The factory-like seawater fish aquaculture system can greatly reduce investment cost of seawater factory-like recirculating aquaculture and energy consumption in the aquaculture process, improves seawater resource utilization rate, saves energy, protects environment, recycles aquaculture waste and has the advantages of being simple in process and fewer in required water treatment devices and the like.

The invention provides an ecological cycling freshwater aquaculture method. The method comprises: preparing a culture water source, supplying water to culture ponds, filtering water, and treating sewage. The plurality of culture ponds are arranged from left to right in sequence to form a culture pond group. The culture ponds in the culture pond group are connected in parallel, and form a recirculating aquaculture system with a filter tank, a treating pond, a settling pond, a biological package, an aeration tank, and a sterilization pond. Using the ecological cycling freshwater aquaculture method, water of the whole system forms virtuous cycle, and is suitable for growth of freshwater fishes and shrimps, and zero discharge of aquaculture wastewater is realized, and water resource is saved. The ecological cycling freshwater aquaculture method has obvious ecological environment benefits, and meets the sustainable development strategy of the country.

The present invention relates to a novel approach for nitrate removal from a marine recirculating system (10) wherein high concentrations of sulfate found in seawater is used in combination with sludge (20) collected from fish growing tanks (12) to promote dissimilatory sulfate reduction to hydrogen sulfide. The sulfide is used as an electron source to promote autotrophic denitrification in an up-flow fix bed bioreactor (16), followed by nitrification in a nitrification unit (14). By utilizing the symbiotic relationship between the sulfate-reducing and sulfide-oxidizing bacterial community, nitrate accumulation is controlled in the recirculating water of the system thereby reducing water exchange in the marine recirculating system.

An aerated recirculated aquaculture system including a culture tank and an aeration and circulation system. The culture tank houses live aquaculture. The culture tank defines a first flow path. The aeration and circulation system includes an aeration device configured to aerate water. The aeration device defines a second flow path. The first flow path and second flow path at least partially defining a substantially closed flow path sequentially passing through the culture tank and the aeration device. The aeration and circulation system is configured to circulate the water around the substantially closed flow path.

The present invention relates to a novel arrangement of denitrification reactors for removal of nitrate compounds in a recirculating aquaculture system. The novel arrangement of an aquaculture system of the present invention includes positioning one or more anaerobic denitrification reactors upstream of aerobic nitrification and degassing processes. One aspect of the present invention includes a flow of aqueous medium from aquatic species rearing tanks towards one or more denitrification reactors. Another aspect of the present invention includes flow of aqueous medium from aquatic species rearing tanks to a solids removing filter or mechanical filtration means for removal of solid waste matter or biomass prior to flow of aqueous medium towards one or more denitrification reactors. In a sequence of components comprising a system of the present invention, treated and denitrified aqueous medium exiting one or more denitrification reactors is directed towards a solids removing filter wherein treated and denitrified aqueous medium combines with untreated aqueous medium. Combined untreated aqueous medium and denitrified aqueous medium exits a solids removing filter and is directed towards an aerobic nitrification unit. Aqueous medium exiting the aerobic nitrification unit is degassed and oxygenated and returned to aquatic species rearing tanks. A system of the present invention which utilizes denitrification reactors positioned upstream of aerobic nitrification has advantages over existing aquaculture systems which use denitrification in reduction of nitrate concentrations. This results in greater mitigation of water chemistries and compounds which are harmful to aquatic species and more efficient use and conservation of water resources.

A method for shrimp aquaculture, in which, all growth phases and essential operations are modularized and integrated to form a multi-phasic synchronous super-intensive shrimp production system controlled by a custom designed cyber-physical platform. Modular components include: post-larvae nursery module(s), grow-out production module(s), recirculating aquaculture system (RAS) module(s), feed distribution module(s) and regulatory elements comprised of Program Logic Controllers (PLCs) integrated with Human Interface Modules (HIMs).

The invention relates to a seawater recirculating aquaculture system and belongs to the field of seawater aquaculture. The seawater recirculating aquaculture system can treat and reuse aquaculture water for solving the problem that seawater aquaculture and land breeding contaminate surrounding water environments. The system comprises an automatically controlled microfiltration unit, a low level pool, an integrated biological filtration tank, a protein skimmer, a channel type ultraviolet sterilizer, a cold and heat exchanger and an oxygen dissolution device which are connected sequentially. The automatically controlled microfiltration unit and a pipe oxygen dissolution device are respectively connected to a fish pond. The low level pool is provided with a circulating pump for pumping the water to the integrated biological filtration tank. The protein skimmer is matched with an ozone generator. The seawater recirculating aquaculture system can circulate and reuse water in an offshore land-based breeding pool to achieve the effect of water-saving, energy-saving, environment-friendly and pollution-free healthy breeding.

The present invention provides processes for removing nitrogen species from fresh water or high salinity water recirculated aquaculture systems. The processes are based on physico-chemical treatments which are performed at ambient temperatures and at low p H values thus keeping the total ammonia nitrogen concentrations below a value which is considered detrimental for the growth or survival rate of cultured fish / shrimp.

The invention discloses a recirculating aquaculture system in an intensive pond. The system comprises the pond, wherein the pond is sequentially divided into a high-density aquiculture area, a solid particle purification area and a water quality purification area along the clockwise direction of the pond; the water surface area of the high-density aquiculture area accounts for 5% of the water surface area of the whole pond; the water surface area of the solid particle purification area accounts for 20% of the water surface area of the whole pond; the water surface area of the water quality purification area accounts for 75% of the water surface area of the whole pond; and the water quality purification area is mainly used for deeply purifying a relatively clean water body at the upper partof the aquaculture pond and a water body purified by the solid particle purification area. According to the system, sewage collection efficiency is high, fishes are not easily scratched, excrement and residual bait can be effectively consumed, the water purification efficiency is high; and as no need of arranging an excrement tank at a ridge side of the pond, energy saving and environment-friendliness are achieved, economic output is high, the effect of the nutrition level of an aquatic animal food chain is achieved.

The invention relates to a recirculating aquaculture system with a large annular aquaculture pond as a core and belongs to the field of fish aquaculture ponds. The recirculating aquaculture system comprises an aquaculture pond A and an aquaculture pond B which are connected in an internally-externally sleeved mode, wherein a physical filtering pond is arranged on the outer side of the aquaculture pond A, water draining ports are formed in the side faces and the bottoms of the aquaculture pond A and the aquaculture pond B and are connected to the physical filtering pond, a biological filtering pond is arranged in the aquaculture pond B, the physical filtering pond is connected to the biological filtering pond, an anaerobic denitrification reaction pond is connected in the biological filtering pond and is connected to an ultraviolet light sterilization device on the outer side of the aquaculture pond A, the water outlet end of the ultraviolet light sterilization device is connected to an aeration tank, the water outlet end of the aeration tank is connected to a water-mixing pond, water in the water-mixing pond is oxygenated, and the water outlet end of the water-mixing pond is connected to an impeller pump pond. The floor area can be effectively decreased, the space utilization rate can be improved, and the number and sizes of independent spaces in the pond can be flexibly adjusted.

The invention relates to a novel factory type recirculating aquaculture system. The system comprises a fishpond (1) which is equipped with a water outlet; the water outlet is communicated with a vertical flowing precipitating device (3); the vertical flowing precipitating device (3) is communicated with a protein separator (4) which is communicated with a regulation pond (5); a first water outlet of the regulation pond (5) is communicated with a water inlet in the upper end of the fishpond (1) through a circulating pump (10). The system further comprises a fermenting tank (7); fungus beneficial for the growth of fish is cultured in the fermenting tank (7); a liquid outlet in the upper part of the fermenting tank is communicated with the regulation pond (5) through a metering pump (9); a second water outlet of the regulation pond (5) is communicated with a liquid inlet in the lower part of the fermenting tank through an ultraviolet sterilizing device (6) and a water supplementing pump (8); a liquid level sensor is arranged in the fermenting tank (7) and used for feeding back a liquid level signal to control the starting / stopping of the water supplementing pump (8); nutritional materials suitable for the growth of fungus can be supplemented regularly into the fermenting tank (7).

The invention discloses a high efficiency dirt collection and intelligent feeding system for fishpond recirculating aquaculture which includes a breeding pond, a sump, a dirt auxiliary device, a feeding device and the like. The system mainly utilizes the sump and the dirt auxiliary device to separate the feces in the breeding pond with the fluid characteristic, and uses the computer vision technology to estimate and control the feeding quantity and feeding range of the breeding pond. The high efficiency dirt collection and intelligent feeding system for fishpond recirculating aquaculture has the advantages of novel structure and simple principle. The high efficiency dirt collection and intelligent feeding system is suitable for the fishpond recirculating aquaculture mode, which is capable of effectively solving the problems of low efficiency in debris separating, easy in breaking and difficult in feeding of the existing fishpond recirculating aquaculture system.

Provided is a factory-like recirculating aquaculture system for Hucho taimen, pertaining to the technical field of aquaculture. The key points of the system are described in that outlet ends of aquaculture ponds communicate with a sedimentation pond through pipelines; the sedimentation pond is located on the side of the aquaculture ponds; a microfiltration machine pond is arranged on the side of the aquaculture pond; additionally, an outlet end of the sedimentation pond communicates with an inlet end of the microfiltration machine pond; the side of the microfiltration machine pond is equippedwith a water return pond; aquaculture water at an outlet end of the microfiltration machine pond and an inlet end of the water return pond as well as in the water return pond enter a floating ball-type biological filter through a pipeline and a water pump; an outlet of the floating ball-type biological filter communicates with a trickling filter through a pipeline and a water pump; the trickling filter is located above an oxygenating tank; the oxygenating tank is disposed on the side of the water return pond; the interior of the oxygenating tank is equipped with an ultraviolet radiation disinfection device; the ultraviolet radiation disinfection device communicates with the oxygenating tank; water in the oxygenating tank communicates with the aquaculture ponds through pipelines. The factory-like recirculating aquaculture system for Hucho taimen is used for factory-like aquaculture of Hucho taimen.

The invention relates to a water purification and aeration method and equipment for a closed recirculating aquaculture system, in particular to a method and equipment for realizing double-effect functions of water purification and aeration with an organic hollow fiber microporous membrane material as a core component. Filtration of suspended solids and organic macromolecular impurities is combined on the basis of water aeration by use of a membrane technology. Multiple steps of operation in recirculating aquaculture is integrated in a single system, the equipment occupied space is effectively reduced, and the pipeline connection is simplified; management of the whole recirculating aquaculture system is facilitated, and the operation efficiency is improved.

The invention belongs to the technical field of crab breeding, and discloses a method for improving crab recirculating aquaculture efficiency by controlling water quality and water temperature. A crabrecirculating aquaculture system is composed of a water treatment system and a breeding system; the water treatment system is composed of a microfiltration machine, a protein separator, an ozonizer,a biological filter, an oxygen generator, an oxygen dissolving cone and a constant-temperature mechanism; the breeding system is a box crab recirculating aquaculture system. The crab factorization recirculating aquaculture system can provide an independent a breeding box for each crab, each breeding box is provided with an independent water feeding system, an independent water discharge system andan independent water feeding oxygenation system, and feces and residual baits can be subjected to semi-automatic discharge, so that high-quality water and a comfortable spatial environment are maintained to be completely consistent in all the breeding boxes; meanwhile, various efficient water treatment systems are arranged to conduct control adjustment on the water quality and water temperature,and an efficient new indoor stereoscopic crab recirculating aquaculture mode is achieved.

A flounder and flatfish engineering pond recirculating aquaculture system belongs to the technical field of marine aquaculture. The system comprises a water storage pond, a back water treatment pond, a coarse filtration pond, a conjoined combination aquaculture pond, a water feeding and drainage system, an oxygen supply device and a water quality monitoring system. On the one hand, the system still uses a traditional earthen pond aquaculture mode for culturing flounder and flatfish to grow in an environment similar to the wild so as to improve the quality of farmed flounder and flatfish. Meanwhile, engineering and systematic arrangement and layout are performed on the outdoor culture earthen pond to achieve factory and information management of flounder and flatfish pond culture, the output of farmed flounder and flatfish such as bastard halibut can reach to 1000-2000kg / mu (one mu equals about 1.667square meters), increasing 5-10 times of the output of traditional large single pond culture, and the culture efficiency and economic and ecological benefits are greatly improved.

The invention relates to an open pond recirculating aquaculture system. The open pond recirculating aquaculture system comprises an aquaculture pond, a water treatment unit and a water pump, wherein the water outlet of the aquaculture pond is connected with the water inlet of the water treatment unit, the water outlet of the water treatment unit is connected with the water inlet of the water pump, and the water outlet of the water pump is connected with the water inlet of the aquaculture pond; the water treatment unit comprises a wastewater pretreatment tank, an adsorption sedimentation tank, a biological tank and a water recycling tank which are sequentially connected; the water inlet of the water pump is connected with the water recycling tank; the aquaculture pond comprises an aquaculture room, an aeration water pushing device, a fence baffle A and a dirt collecting device A are arranged in the aquaculture room, the fence baffle A is arranged between the aeration water pushing device and the dirt collecting device A, the aeration water pushing device is arranged at the upper stream in the aquaculture room, and the fence baffle A is arranged at the down stream of the aquaculture room. The open pond recirculating aquaculture system occupies small area, effective aquaculture area is large, and aquaculture water can be effectively treated and recycled; and the aeration water pushing device in the aquaculture pond can realize aeration and oxygenation effects and also can promote flow of the aquaculture water and effective collection of feed residue and excrement.

The invention relates to a full-life-stage recirculating aquaculture system of jellyfish and a breeding method therefor. The full-life-stage recirculating aquaculture system of the jellyfish comprisesa dismountable breeding cylinder, a bottom cylinder, a filtering system, a water pump, an upper water pipe, a lower water pipe or the like. The upper water pipe is used for supply water to the breeding cylinder, and the lower water pipe is used for leading the water in the breeding cylinder out and into the filtering system in the bottom cylinder, so that the breeding water can be recycled between the breeding cylinder and the filtering system. The breeding cylinder provides power for motion and predation of the jellyfish and realizes an oxygenation effect by air holes and / or a porous water spraying pipe, and a porous inclined plate blocks the jellyfish so as to keep the jellyfish in the breeding cylinder, so that mechanical damage caused by jellyfish salvage can be avoided. The full-life-stage recirculating aquaculture system of the jellyfish, and the breeding method therefor solve breeding problems in different stages of a life cycle of the jellyfish, can also greatly save manpowerand time consumed in jellyfish breeding, increase breeding efficiency and are of good application prospect.

Systems and methods for intensive recirculating aquaculture are provided herein. An example system includes water sourced from a first segment of a saline aquifer, a recirculating aquaculture system receiving the sourced water and producing discharge water, and a water discharge point located within second segment of the saline aquifer disposed below the first segment of the saline aquifer.

The invention relates to the technical field of aquaculture and provides an indoor recirculating aquaculture system, aiming at solving the problems of an existing culture system for culturing seawater fishes that the structure is complicated and the cost is relatively high. The system comprises a culture pond and a water treatment system, wherein the pond bottom of the culture pond has a gradient; a water discharging hole is formed in the lowest position of the pond bottom; the water treatment system is arranged under the culture pond; and the water treatment system comprises a micro-filtration machine, an air pump, a primary biological filter tank, a secondary biological filter tank, an ultraviolet disinfection device, a water pump and a water inlet pipe. The technical scheme provided by the invention is simple in structure, relatively low in cost and suitable for being used in direct-sale stores.

The present invention relates to a novel arrangement of denitrification reactors for removal of nitrate compounds in a recirculating aquaculture system. The novel arrangement of an aquaculture system of the present invention includes positioning one or more anaerobic denitrification reactors upstream of aerobic nitrification and degassing processes. One aspect of the present invention includes a flow of aqueous medium from aquatic species rearing tanks towards one or more denitrification reactors. Another aspect of the present invention includes flow of aqueous medium from aquatic species rearing tanks to a solids removing filter or mechanical filtration means for removal of solid waste matter or biomass prior to flow of aqueous medium towards one or more denitrification reactors. In a sequence of components comprising a system of the present invention, treated and denitrified aqueous medium exiting one or more denitrification reactors is directed towards a solids removing filter wherein treated and denitrified aqueous medium combines with untreated aqueous medium. Combined untreated aqueous medium and denitrified aqueous medium exits a solids removing filter and is directed towards an aerobic nitrification unit. Aqueous medium exiting the aerobic nitrification unit is degassed and oxygenated and returned to aquatic species rearing tanks. A system of the present invention which utilizes denitrification reactors positioned upstream of aerobic nitrification has advantages over existing aquaculture systems which use denitrification in reduction of nitrate concentrations. This results in greater mitigation of water chemistries and compounds which are harmful to aquatic species and more efficient use and conservation of water resources.

The invention discloses a variable-flow intelligent control system based on fish school behaviors and bottom pollution discharge characteristics. The system comprises a circulating water culture pond, a circulating water treatment system, a feeder, a high-definition camera, a variable-frequency water pump, a computer, a PLC and the like. The system mainly utilizes a machine vision technology and a computational fluid mechanics simulation technology to analyze and evaluate sludge discharge at the bottom of the culture pond, so as to formulate a variable-speed flow strategy. The variable-flow intelligent control system is simple in structure, the method is accurate, simple and convenient, the intelligent variable-flow system is suitable for a recirculating aquaculture mode, and the problems that in an existing recirculating aquaculture system, bottom sludge is difficult to discharge, water flow dead zones exist, water quality becomes poor, and growth welfare of fishes is affected can be effectively solved.

The invention relates to the technical field of aquaculture, in particular to a litopenaeus vannamei recirculating aquaculture system based on a biological floccule water treatment technology. The system comprises a culture area and an external treatment area, wherein the culture area comprises a culture pond and a water mixing pond, and the external treatment area comprises a biological flocculation pond and a physical filtering pond. According to the litopenaeus vannamei recirculating aquaculture system based on the biological floccule water treatment technology, the biological floccule water treatment process is independent from a culture water body, meanwhile, the biological flocculent water treatment technology and a circulating water treatment method are combined in technology and facility engineering, so that the daily maintenance management of the biological floccules is facilitated, and the whole system has the advantages of being convenient to manage, capable of saving energy, reducing the culture risk and improving the culture efficiency.