579 results about "Mariculture" patented technology

The invention relates to an artificial culture method for Portunus trituberculatus in mariculture, and belongs to the technical field of agricultural mariculture. The artificial culture method consists of two parts of technology: 1, an integrated culture regulation method is carried out; and 2, anti-slaughter nets are arranged at the bottom of a pond, 300 nets are arranged in each mu and the slaughter on unshelled crabs by shelled crabs is reduced. The integrated culture regulation method comprises steps of: 1, performing pond regulation: dredging, sterilizing, drying sludge, fertilizing the fond, and laying pipelines at the bottom of the pond and sterilizing the water; 2, performing finite amount of water exchange; 3, regulating the water quality of the culture pond by using composite microorganism agents; 4, reasonable configuring and using aeration facilities; and 5, preparing feeds and reasonably feeding the feeds. Due to the application of the technology, the water quality of the culture pond is improved; the slaughter between the unshelled crabs and the shelled crabs is prevented; and the yield and economic benefit of the portunus trituberculatus are improved.

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.

The invention discloses a method for regulating and controlling the water quality of fully enclosed circulation sea-water industrial mariculture, comprising the following steps: (1) purifying water source of seawater through a sedimentation basin, regulating salinity and temperature, then supplying water to a culture pond; (2) letting the culture waste water discharged from the culture pond flow into a water collecting tank through a sewage tank, and putting the culture waste water to a filter unit for mechanical filtering; (3) dynamically lifting water to high position for sand filtration; (4) carrying out biological treatment in a biological filter which is filled with brushes as biological carriers; and (5) carrying out sterilization with vitalight lamp radiation, and then returning to the culture pond for recycling. The results of trial culture with the invention show that: the removal rates of three nitrogens of the processed water are all exceed 70 %, the removal rate of NO3<->-N exceeds 80 %; the bacterial index is reduced by 85.05 %, DO is increased to a certain extent, and the pH value is increased slightly; the indexes of water quality after treatment achieve the water standards of mariculture, simultaneously, culture output is increased, and the hydroenergy and electric energy are saved.

The present invention discloses an industrial mariculture efflux water recycling and utilization system based on constructed wetlands, and a method thereof. With the system and the method, two grades of constructed wetlands are connected in series to treat the mariculture efflux water, the sewage and the sludge are subjected to the harmless treatment, and are recycled and utilized. According to the present invention, the mariculture efflux water is pretreated by a sedimentation tank, and enters a first grade surface flow constructed wetland and a second grade upward vertical flow constructed wetland; the resulting water is subjected to a purification treatment, enters a water reservoir, and is reused; the sludge enters a sludge collecting tank from the sedimentation tank, and is treated by biological composting to be adopted for planting salt-tolerant vegetables; with the backwashing principle, the matrix clogging of the constructed wetlands is aperiodically recovered; compared to the mariculture efflux water treatment method in the prior art, with the method of the present invention, the denitrification and phosphorus removal effect is enhanced, the investment cost and the operating cost are low, the method has characteristics of high performance, ecology, environmental protection and economy, and is applicable for popularization and application.

The invention relates to a cultivation method of spotted maigre in seawater cage culturing industry, which pertains to the technical field of agriculture mariculture. By utilizing different starvation time produced by compensation growth mechanism of spotted maigre with different weight, the invention puts forward different feeding methods for spotted maigre with different weight; the feeding methods include daily feeding amount, feeding frequency and stocking density which is suitable with the feeding frequency. The feed utilization rate of feed by adopting the method of the invention is improved by 13.7 percent; labor cost and feed cost of the cultivation is reduced, the fat content of the cultured spotted maigre is 5 percent to 10 percent lower than that of conventional cultivation, while the protein content is increased by 10 percent to 15 percent, which is conducive to human health, and the output value is increased by 28.3 percent; the cultivation method of the invention has good economic benefit, is an innovative seawater cage culturing method and can be applied for popularization.

The invention discloses a method for purifying mariculture wastewater by utilizing a compound microbial inoculant. The method comprises the following steps: (1) screening the compound microbial inoculant which consists of photosynthetic bacteria, nitrobacteria, denitrifying bacteria, candida utilis, lactobacillus acidophilus and bacillus; (2) activating the compound microbial inoculant by utilizing a culture medium: directly adding the strain into the culture medium based on 1% of inoculation amount (w / v), and activating the strain by a shaker at the temperature of 37 DEG C with the speed of 150rpm (revolution per minute) for 24 hours so that the total content of microbes is 7*10<8>-9*10<8>CFUs (colony forming units) / mL; and (3) adding the activated compound inoculant into the treated aquaculture wastewater, wherein the compound inoculant accounts for 0.06%-0.12% of the total weight of the aquaculture wastewater. The method has the advantages of no toxicity and harm on aquaculture animals, simple process, fast organic matter degradation speed, obvious effect, no drug residues and no secondary pollution. Therefore, the method has economic feasibility and is applicable to popularization and application to coastal aquaculture industry.

The invention provides a preparation method and application of a sea bdellovibrio bacteriovorus ecological preparation, and relates to a sea microbial ecological preparation and a preparation method of a bdellovibrio bacteriovorus preparation for mariculture. The preparation method comprises the following steps of: preparing a host bacteria suspension; separating and purifying bdellovibrio bacteriovorus; and propagating and culturing bdellovibrio bacteriovorus. The preparation method is characterized in that after pseudomonas stutzeri is connected with an incline and is activated, adding physiological saline in a test tube to prepare the bacterial suspension; then propagating and culturing with nutrient bouillon; adding a flocculating agent in the obtained bacterial suspension; standing and precipitating after uniformly shaking; adding the physiological saline to obtain 1012 cfu / mL of host bacteria suspension; separating and purifying the bdellovibrio bacteriovorus of collected sea and bottom sediment samples with a double agar plate method; pouring culture media containing the host bacteria suspension and the collected samples into sea agar in the lower layer for culture after uniformly mixing; and adding the host bacteria and the bdellovibrio bacteriovorus obtained by separation into sterilized natural sea, and culturing until the concentration of the bdellovibrio bacteriovorus is 108 to 109 pfu / mL for future use.

This invention relates to a micro-ecological agent and the preparation method thereof, belonging to the micro-ecological agent technological field. The preparation of the active bacteria agent of this invention comprises: using L-calcii lactas and four useful micro-organisms of clostridium bytyricum, Lactobacillus casei, bacillus subtilis and saccharomycete as characteristic elements, cultured purely or mixedly by means of universal fermentator, producing active bacteria powder by freeze-drying, and acquiring the finished products by double crossing of the powder at a specific proportion. By using the anaerobic and aerobic characteristics of related bacterial strains, this agent has the following merits: playing the synergy effect in enhancing the disease resistance of marine animals and the water purification of aquaculture, substituting antibiotics fully or partly for the disease prevention and cure in fresh water aquiculture and mariculture, and improving the economic benefits of aquaculture. The L-calcii lactase component can accelerate the husking growth and prevent the disease of soft husk of shellfish marine animals like shrimp and crab. This agent is characterized of being nontoxic, free from side effects, nonpersistent, without secondary pollution and no drug tolerance, and will have a wide commercial application in the fresh water aquiculture mariculture.

The invention discloses a novel nanometer reinforced, non-transition-layer, organosilicone and low-surface-energy type antifouling paint which can be directly coated to a base material and an epoxy primer without an intermediate transition layer. The antifouling paint comprises the following components in parts by weight: 10 to 20 parts of A, 2 to 10 parts of B, and 0.1 to 2 parts of C, wherein the component A comprises the following materials in parts by weight: 25.0 to 50.0 parts of nanometer pre-dispersed slurry, and 0.5 to 5.0 parts of silicone oil; the component B comprises the following materials in parts by weight: 3.0 to 50.0 parts of crosslinking curing agent, and 1.0 to 10.0 parts of silane coupling agent; the component C comprises the following materials in parts by weight: 0.1 to 3.0 parts of catalyst. The coating has the advantages of being high in intensity, high in attaching force, easy to be constructed, and high in recoatability, and can be applied to various ships, offshore oil platforms, ocean structures and facilities, and mariculture nets and the like.

The invention discloses a method for artificially breeding the seed of the spotted maigre, belonging to the field of mariculture in agriculture. In the method an indoor high-density seed breeding method is combined with a prelarva outdoor pond ecological breeding method. The method comprises the steps of: indoor spotted maigre prelarva high-density breeding, outdoor pond prelarva breeding, and fishing after the length of the prelarva is more than 5cm. The indoor spotted maigre prelarva high-density breeding comprises the steps of: 1. hatching, 2. breeding the prelarva, and 3. fishing and transporting. The outdoor pond prelarva breeding comprises the steps of: i. soil pond facility finishing and early preparing; and ii. soil pond breeding and managing. The soil pond facility finishing and early preparing comprises the steps of: 1. disinfecting the pond and the water body; 2. installing an oxygenating system; and 3. breeding biological bait. The soil pond breeding and managing comprisesthe steps of: 1. putting the prelarva; 2. changing the water; 3. putting the bait; and 4. regulating the water quality. The method combines with the advantages such as the high controllability of theindoor high-density seed breeding with the ecology imitation of the outdoor pond and the like, so that the seed breeding cost and risk are reduced, and the seed quality of the spotted maigre is improved, therefore, the method can be popularized and applied.

The invention relates to a shipborne mariculture system, which comprises a ship hull, wherein a water chamber is arranged in the ship bull; a first horizontal pipeline is arranged on the broad side of the water chamber close to a bilge part in position; a water pump and a gate valve used for charging water are arranged in the first horizontal pipeline; a second horizontal pipeline is arranged on the broad side of the water chamber close to a water line in position; a gate valve used for discharging water is arranged in the middle of the second horizontal pipeline; a liftable steel mesh platform and a liftable hierarchical grid are arranged in the water chamber; and a water purifying system and an aerating oxygenation system are arranged in the water chamber. The shipborne mariculture system avoids water treatment of which the cost is higher and higher, and the offshore distance is long enough, so that seawater for mariculture can not be affected by external severe environment and pollution, and the safety and the quality of aquatic products are guaranteed. Owing to the moving capability of the shipborne mariculture system, the system can not only perform mariculture in sea areas with suitable water temperature and good water quality, but also avoid typhoon when meeting emergencies, and reduces the risk of mariculture.

The invention discloses feed additive which improves the immunity of seawater fish. The feed additive consists of three or more than three types in clostridium butyricum, mannan oligosaccharide, xylo-oligosaccharide and fructooligosaccharide by proportion. 0.1 percent to 1 percent of seawater fish immunity intensifier of the invention is added into seawater fish feed, which can obviously improve the level of the muramidase in serum and skin mucus, obviously improve the level of IgM in the serum and the skin mucus, improve the fish immunity response capability, thereby improving the disease resistance of the cultivated fish. 1 percent of the immunity intensifier of the invention is added into the seawater fish feed, which can obviously improve the daily weight gain of the fish and reduce the food coefficient. The feed additive which improves the immunity of the seawater cultivating fish of the invention can obviously improve the immunity response level of the seawater cultivating fish, improve the disease resistance, and is safe without public harm and residue; the seawater fish cultivated by the additive meet the green food sanitation requirements.

The invention provides an ultraviolet radiation damage resistant complex of marine oligosaccharides and collagen peptides, which is prepared from marine oligosaccharides with antioxidant activity and tilapia mossambica fishskin collagen peptides with molecular weight of between 2,800 and 3,000 Da through compatibility. Chemical and pharmacological experiments prove that: compared with single components subjected to compatibility, the complex can inhibit the generation of oxygen radicals caused by ultraviolet radiation obviously and can enter skin cell mitochondria in a targeting mode to a greater degree to inhibit light aging, and has the obvious protective effect on skin injury caused by the ultraviolet radiation. The complex provides theoretic support for the development of natural oligosaccharide-peptide complex uvioresistant and mitochondrion targeting medicaments and the high-value utilization of mariculture industry.

The invention relates to a feed additive, in particular to a feed promoting agent for seawater cultured fishes, which comprises the raw materials in weight ratio in the terms of addition per ton of feed: 300-1200g of crystal taurine, 300-1000g of L-glycine, 500-1000g of L-alanine, 500-1200g of L-glutamic acid, 800-1500g of L-aspartate, 500-3000g of betaine hydrochloride, 1000-2000g of dimethyl-beta-propiothetin (DMPT) crude powder and 1100-8000g of degreased condensed fish soluble protein powder. Proved by multiple culture tests in seawater fish feeds, such as Japanese sea bass, sciaenops ocellatus, trachinotus ovatus, garrupa and the like, the feed promoting agent for seawater cultured fishes is capable of remarkably enhancing the food intake of the seawater fishes to the composite feed by above 10 percent and quickening the intake speed as well as remarkably improving the stress-resisting capability of the cultured objects; and the cultured the seawater fishes have the advantages of high survival rate, bright color and strong stress resistance.

High sea surface temperatures (SST) are a major factor in the formation and maintenance of tropical cyclones. Global warming has contributed to a rise in SSTs causing an increase in tropical cyclone formation. This increase in SSTs in the Atlantic basin is attributed to failing of the ThemoHaline Currents (THC) that provides warm ocean waters to Europe. Should the THC fail, it is estimated that Europe would be plunged into a 200-400 year ice age. The invention described herein uses OTEC or similar technology to pump cold ocean water to the surface, reducing SSTs limiting the formation and growth of tropical cyclones. Additional benefits would include strengthening of the THC as well as providing a stop-gap solution for global warming while more responsible manufacturing and industrial methods are designed and implemented. With limited additions to the OTEC platform other benefits can be derived including but not limited to mariculture, algaeculture, biodiesel and ethanol production, and carbon sequestration.

Disclosed is a Chinese herbal composite prescription for controlling sea fish paralembus digitiformis, wherein the medicinal constituents include (by weight ratio) European verbena 40%, Kulian 30%, baikal skullcap root 30%, the preparing process consists of disintegrating, passing through 100 mesh sieve, and mixing homogeneously.

The invention discloses a deepwater net cage with a single-point mooring system. The deepwater net cage comprises a floating pipe frame (1), netting (2) and the mooring system; the floating pipe frame (1) floats on the sea level (SL), the top of the netting (2) is connected with the floating pipe frame (1), and a netting weight (3) is tied and hung at the bottom of the netting (2) so as to form space for mariculture; the mooring system comprises an anchor (4), an anchor rope (5) and an anchor rope weight (6); the floating pipe frame (1) is provided with a box tying point (1a), the anchor (4) is sunk into the sea floor (SF), the lower end of the anchor rope (5) is connected with the anchor (4), the upper end of the anchor rope (5) is connected with the box tying point (1a), the anchor rope weight (6) is tied and hung on the anchor rope (5), and the length of the part, located between a tying and hanging point of the anchor rope weight (6) and the upper end of the anchor rope (5), of the anchor rope (5) approximates the lowest water level water depth of the position of the anchor (4). The deepwater net cage is high in anti-typhoon capacity and risk prevention capacity.

A diamond-shaped wave-resistant and storm-resistant deep-water culture net cage is characterized by comprising a net cage frame system which is composed of an outer floating frame, an inner floating frame, a reinforcement pipe, a 60-degree elbow, 60-120-degree lateral tees, 120-degree elbows and floating frame connecting pieces, a mooring system which is composed of a mooring rope, an anchor chain, an anchorage, a front-end buffer floating ball, middle floating balls, a buffer counter weight and a rear-end buffer floating ball, a net cage flow reduction stable structure which is composed of wave stabilizing plates and front-end flow reduction nettings, and a net bag system which is composed of nettings, ground ropes and a bottom frame. The floating frames are of a diamond-shaped structure, and a multi-section buffer single-point mooring system is adopted by the mooring system, through the diamond-shaped frame structure and the multi-section buffer single point mooring system of a net cage, the top of the net cage directly faces wave currents under the action of the wave currents, and a wave breaking effect is achieved, so that the acting force of the waves to the net cage is reduced, and the Chinese Blue granary strategy implementation and the mariculture development tendency from inshore to deep sea are promoted.

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.

A waterless activation method of the see fishes. Keep the sea fishes in the pure oxygen condition on the waterless state by domesticating without food and episodic gradiently cooling process, the sea fishes can be alive for a long time and reactivated in the fresh seawater. The invention can make some sea fishes be alive for about 60 hours, and the weight of the fish is only lost of 2.4 percent, so the active effect is good, it improves the fresh activity and accumulating of the sea fishes oberviously, and has the great acceleration significance to the development of mariculture.

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 provides a breeding net cage, and relates to the technical field of mariculture. The breeding net cage comprises a flexible floating frame device, a net device and drooping weight devices; the flexible floating frame device can float on the sea surface, and multiple sets of anchoring devices are connected with the surrounding portion of the flexible floating frame device; the top ofthe net device is connected with the flexible floating frame device, the net device is strutted under the sea surface to form a space used for breeding marine organisms, and multiple sets of droopingweight devices are connected to the bottom of the net device. The problems that an existing net cage is complex in structure and high in cost and can be easily damaged by sea wave impacting are effectively solved.

The invention relates to the propagation of Sargassum thunbergii, in particular to a method for quickly propagating the Sargassum thunbergii by a method of main branch fragment tillering, which comprises the following steps: 1) alcohol with a volume concentration of 75 percent used by the main branch of the Sargassum thunbergii is adopted for dipping the main branch for 25 to 23 seconds; and then a plurality of disinfected seawater is adopted for quickly washing the main branch for 3 to 4 times; 2) the main branch of the Sargassum thunbergii strain is sheared into fragments with a length of 2 to 3cm; the fragments are arranged in a container to culture; universal ES seawater culture liquid is adopted as a medium for ventilation culturing; and when the tillers of the fragments can achieve 1.5 to 3.5cm, the fragments are taken out from the container and the tillers are cut off by a disinfected bistoury; and 3) the cut off tillers are continuously propagated and cultured by adopting the conditions in the step 2) or directly used for the large-scale gripping mariculture. The method is simple to be operated and low in cost; regenerated seedlings can be produced in a circularly; moreover, the method plays the remarkable role of protection on the natural environment.

The invention discloses a rocker arm type ocean wave driven seawater pump arranged at the position which is in 2 to 5 meters of water depth close to the seacoast and is not frozen in winter. The pump is mainly characterized in that: a working buoy is driven by using the energy formed by wave peak valley fall on the surface of the sea, so that the working buoy moves up and down together with the height change of the sea level; and a lever rocker arm connected to the working buoy applies work together with the ascending and descending movement of the buoy to drive a piston rod of a piston pump on the lever rocker arm to move. The piston compresses the seawater in the pump body to apply work. The pump is used for converting wave energy into mechanical energy, converting the mechanical energyinto hydraulic energy, sucking seawater through a filter check valve, extruding the seawater through a drainage pipeline check valve and supplying seawater energy of certain pressure to the seacoast,wherein the seawater energy is used for seawater culture, seawater extraction, seawater power generation and the like on the seacoast.

The invention relates to a bottom sowing-type mariculture facility which is suitable for the sea area with silt bottom, in particular to a bottom sowing-type raft frame and a net cage for marine bivalve mollusks, sea cucumbers or mixotrophic culture of marine bivalve mollusks and sea cucumbers. The facility is provided with a PVC pipe, a polyethylene rope for fixing the PVC pipe, a webbing, a stake or an anchor for fixing the facilities, a rope fixed on the stake or the anchor, and a fixable floating ball which is connected to the rope and floats on the surface of water; the PVC pipe is fixed on the polyethylene rope in parallel, the polyethylene rope is arranged in parallel, is perpendicular to the PVC pipe, is positioned at the upper side and the lower side of the two terminals of the PVC pipe and forms the structure similar to a 'soft ladder'; the 'soft ladder' is externally covered by the webbing, and a plurality of independent net cages are formed by combining the PVC pipe, the polyethylene rope and the webbing; the two ends of the undrawn 'soft ladder' are fixed at the bottom of the sea by the stake or the anchor respectively, and the floating ball is fixed at the two ends of the 'soft ladder' by the rope. The facility can effectively prevent the enemies and reduce the influence of storm and ocean current, thus being convenient for management and harvest and favorable to the comprehensive utilization of mariculture area.

The invention discloses a Brevibacillus laterosporu with function in quickly decomposing nitrite nitrogen and bacteriostasis function and an application thereof. The screening strain is Brevibacillus laterosporu YB-02, the strain collection number is CGMCC-No. 9757. The strain provided by the invention has a capacity of effectively decomposing nitrite nitrogen in water, has cholate resistance and trypsin resistance, and further has higher inhibiting effects to mariculture pathogenic bacteria like vibrio splendidus, shewanella smarisflavi and edwardsiella tarda. Therefore, the strain provided by the invention can be used for developing probiotics products for mariculture water purification and bacterial inhibition, the antibiotics abuse is avoided, the fishing disease is prevented and treated effectively, the quality and yield of marine food products are improved; the strain has effective, fast and safe water purification effect to acute water pollution, and therefore, the strain is wide in application prospect.

The invention discloses a detection method for the biological community structures of an ocean brown tide. According to the detection method, miniature organism 18S rDNA in a water area environment is detected by virtue of a metagenomics high-throughput sequencing technology, the obtained OUTs and species annotations are combined, and then diversity, uniformity, abundance and dominance index analysis is carried out on the OUTs, thus judging the dominance degrees of organisms in the ocean brown tide; statistics and judgment for the dominance evolvement rules of dominant species in brown tide outbreaks are promoted. The embodiment of the invention designs and verifies primer sequences designed with regard to the organisms in the brown tide, and a verification for the actual brown tide outbreak cases proves that the method disclosed by the invention is capable of authenticating the biological community structures of the ocean brown tide in ocean water, providing a technical support for brown tide monitoring operation, and providing a technical support for avoiding environment risks for healthy mariculture.

The disclosed synthesized bait for jellyfish cultivation is prepared from the conventional raw materials, premixed additive, biological bait through the steps of edulcoration, disintegrating, mixing, curing, initiative granulating, swelling, vacuum spraying, pelletization screening, cooling down and packaging.

The invention discloses an ecosystem for purifying mariculture water by composite constructed wetland in a subtropical area, wherein the circulation system comprises a water utilization system and a purification system, the purification system comprises surface flow wetland, a seawater pond, subsurface flow wetland and a water delivery facility; the surface flow wetland is a pretreatment system which uses a water pump to lift water or is introduced with seawater by a natural tide storage mode, and salt-tolerant and low-temperature resistant mangrove plants are planted on a main body of the surface flow wetland; the seawater pond is a planktonic and bacterial micro-ecological regulation region for accumulating seawater treated by the surface flow wetland; the subsurface flow wetland is a strong degradation adsorption functional zone, middle and upper layers of seawater is introduced to the seawater pond through laying a water supply pipe, and a main body of the subsurface flow wetland is formed by connecting a biological sedimentation bed, an aerated packed bed and a gravel bed in series. The system is large in scale of water treatment, short in hydraulic retention time, comprehensive in removal of culture water-quality pollution indexes and good in ecological landscape, and further can produce aquatic by-products with higher economic values.

The invention discloses an ocean tidal energy telescoping cylinder water pump. The ocean tidal energy telescoping cylinder water pump comprises a floater assembly, a telescoping cylinder and a lower base cylinder, wherein the floater assembly is arranged above the telescoping cylinder, the lower base cylinder is arranged below the telescoping cylinder and provided with a drainage outlet, the telescoping cylinder is composed of two flanges and a telescoping cylinder body, the telescoping cylinder body is arranged between the two flanges, the floater assembly is provided with a plurality of hollow upper floating barrels, and sea water can enter cavities of the upper floating barrels to support the weight of the floating barrels during tide falling. The ocean tidal energy telescoping cylinder water pump adopting the above structure can improve utilization rate of ocean tidal energy, is low in using cost and maintenance cost and widely applicable to ocean tidal water storage generation, sea water desalination, mariculture, seawater baysalt and the like.