111 results about "Marine pollution" patented technology

Herein we describe a method for the reduction of pollution in aquatic systems by incorporating polyhydroxyalkanoate microbeads into personal care formulations such as exfoliants, cosmetics, and toothpaste. Suitable polyhydroxyalkanoate microbeads are biodegradable, have an average size of less than 400 microns, and sink rapidly in aquatic environments.

The invention provides a portable airborne marine oil spill remote sensing monitoring system, and relates to the marine pollution monitoring field. The system comprises an infrared / ultraviolet / multispectral digital camera, a central control and display system as well as a data management and image processing operation software system. The central control and display system records image information acquired by the infrared / ultraviolet / multispectral digital camera, and superposes the information with an electronic chart for on-line or off-line track playback; and the data management and image processing operation software system which is arranged in a portable industrial control computer of the central control and display system reads the image information, identifies oil spill on line, computes contaminated area on line and identifies thick oil film. The system has the advantages that the portable airborne marine oil spill remote sensing monitoring system can be expediently equipped on various ocean patrol planes without power supply from the planes; when a marine oil spill accident happens, the system can track the marine oil spill in real time, estimate oil spillage and the contaminated area, and evaluate the oil spill elimination effect.

The invention relates to paint, particularly to a novel environment-friendly anti-fouling coating paint for ocean and aims at solving the problem that the current anti-fouling pint for the ocean has great hazard for the ocean. The novel environment-friendly anti-fouling coating paint for ocean consists of the following components in parts by weight: 10-20 parts of organosilicon-modified acroid resin, 10-20 parts of water-borne acrylic-modified epoxide resin, 5-9 parts of hydroxy-terminated polydimethylsiloxane, 0.5-3 parts of a silane coupling agent, 17-24 parts of an organic solvent, 22-30 parts of an environment-friendly anti-fouling agent, 6-10 parts of zinc oxide, 2-5 parts of talcum powder, 1-3 parts of bentonite, 3-5 parts of ferric oxide, 2-5 parts of nanosilicon dioxide and 1-3 parts of polyfluortetraethylene. The novel environment-friendly anti-fouling coating paint disclosed by the invention has no harmful substances such as organic tin and cuprous oxide which seriously hazarding an ocean ecological environment, so that the pollution and the damage to the environment are avoided; and the high-efficiency anti-fouling performance is achieved by reducing surface energy of the paint and matching with an environment-friendly anti-fouling agent.

The invention relates to an atmospheric corrosion simulator capable of adjusting temperature, humidity, ultraviolet light and pollution gas. The atmospheric corrosion simulator consists of an air compressor, a purifying and drying system, a humidifying system, a pollution gas generating and controlling system, a mixing box, a relative humidity detector, a constant-temperature water bath and an atmospheric corrosion simulation test box, wherein the purifying and drying system consists of a needle valve, a rotor flow meter and four organic glass tubes which are filled with purification components; through the humidifying system, wet air is formed by dry air through a water tank which is filled with medium-temperature bubbling distilled water; a tail gas absorbing device consists of different washing bottles which are filled with diluted hydrochloric acid and diluted sodium hydroxide solutions; an ultraviolet light system is used for adjusting and controlling the type and the strength of the ultraviolet light in the atmospheric corrosion simulation test box; the purifying and drying system, the humidifying system and all pipelines are fixed on a frame. Through using the atmospheric corrosion simulator, the efficiency of durability research on materials in a marine pollution atmosphere can be greatly improved; meanwhile, the pollution conditions can be controlled precisely; compared with a conventional method, the atmospheric corrosion simulator is more approximate to the accrual engineering application condition.

The invention belongs to the field of photocatalysis and specifically relates to a Bi2WO6 / Ag3PO4 heterojunction composite photocatalyst and its preparation method and application. The Bi2WO6 / Ag3PO4 heterojunction composite photocatalyst is composed of Bi2WO6 and Ag3PO4, wherein Ag3PO4 nanoparticles are deposited on the Bi2WO6 surface of a three-dimensional layered rod-like structure; and the molar ratio of Bi2WO6 to Ag3PO4 is 1:0.1-10. The preparation method of the invention has a simple process, is easy to control and is low-cost. A Bi2WO6 / Ag3PO4 heterojunction structure with visible light response is constructed, photon-generated carrier separation is accelerated, and recombination probability of photogenerated electron-hole pairs is minimized. The Bi2WO6 / Ag3PO4 heterojunction composite photocatalyst has high-efficiency photocatalytic activity and stability in visible light, has highly-efficient killing and degradation effects on harmful microbes and dye pollutants in a water body and has good practical value and potential application prospect in fields of water body purification, marine pollution prevention and the like.

The invention provides a method and a device for killing algae and bacteria in the pipeline transportation of marine ballast water. A millipore filter and a tubular high-voltage discharge reaction unit are connected on a transportation pipeline of the marine ballast water in series, the marine ballast water passes through the millipore filter, the diameter of filtration pores is 20 to 50 microns, and larger suspended matters and aquatic organisms entering a pipeline system of the marine ballast water are removed; and the filtered water enters the tubular high-voltage discharge reaction unit, pulse high voltage of 10 to 60 kilovolts is applied between a high-voltage electrode and a ground electrode of the tubular high-voltage discharge reaction unit, high-voltage pulse discharge is generated, the detention time of the ballast water in the tubular high-voltage discharge reaction unit is 0.1 to 2 hours, and the ballast water passing through the tubular high-voltage discharge reaction unit enters a ballast tank. The invention can kill or inactivate foreign pathogens and pests in the ballast water in a pipeline transportation system and lowers or eliminates the marine pollution caused after the ballast water is discharged.

The invention belongs to the field of marine pollution risk assessment and monitoring, and particularly relates to a marine oil spill risk assessment method. The marine oil spill risk assessment method comprises the following steps of (1) risk source assessment; (2) risk diffusion calculation; (3) sensitivity analysis; and (4) oil spill risk division. The concrete operation of the step (2) is that a climate state marine oil spill risk diffusion model is established based on the marine environment, the hydrodynamic characteristics and the wind field variations of different seasons of the research marine area by using an oil particle drift diffusion simulation method, each oil spill risk source risk diffusion field is monthly calculated and the level of the oil spill risk is determined through superposition calculation. The climate state marine oil spill risk diffusion model is established so that the requirement of high-resolution calculation of the oil spill risk diffusion precision can be met, the calculation burden can also be saved and integrated oil spill risk calculation of the marine area level is enabled to be feasible.

The invention discloses a method for preparing a marine pollution prevention paint. The paint comprises the resin solution, the elasticizer, the filler and the copper-protoxide. The method comprises the following steps: adding carboxymethyl cellulose, copper acetate, potassium bromide, water in the three-hole flask; mixing and heating; dissolving potasium carbonate and hydrazine hydrate in the water; mixing; dropping in the copper acetate solution; dropping caustic soda solution in three-hole flask; adjusting pH value of the system; keeping the temperature; mixing; stewing; producing a good deal of yellow particles; filtering; cleaning; drying; getting cuprous oxide; vibrating the mixture of 40% elastic acrylic aqueous emulsion, chlorcosane, iron oxide red, gas phase silica dioxide and cuprous oxide in the oil paint oscillator; filtering with filter. The invention is provided with the simple production technology, the high oxidation resistance and the high pollution resistibility.

The invention discloses a salvage treatment device for dead fish. The hull is provided with a pulverizer, and the pulverizer is provided with a feed port and a discharge port. There is a collection box, a joystick is set on the control box, a motor is set on one side of the control box, the motor is connected with a universal converter, and the universal converter is connected with one end of the telescopic folding link, and the telescopic folding link is The other end is connected to the net hoop, one end of the telescopic folding connecting rod is equipped with a water quality detector, the net hoop is equipped with a fishing net, the bottom of the hull is embedded with a disinfectant electromagnetic spray head, and one end of the disinfectant electromagnetic spray head is connected to a disinfectant. Agent box, this kind of device can salvage the dead fish on the ocean, avoid the dead fish from polluting the ocean or causing other fish to be affected by diseases, and then crush them, which can be used as fish feed, and can also be used as fish feed. An area with a lot of dead fish will be detected and then dealt with in time.

The invention relates to a movable sea geography information geohydrologic environment detecting method and relative system, especially providing system that combines data communication technique to detect the marine pollution source, wherein the carried GPS will calculate out the position and time of pollution source, and uses variable digit detectors to combine the single-chip technique to feedback the data via wireless transmission system; the obtained data is processed to be environment space detecting information, to be analyzed by MGIS system.

A process for inhibiting the fouling of a substrate in a marine fouling environment, which comprises forming on the substrate, before exposure to the said environment, a coating comprising a curable fluorinated resin of the general formula: W-L-YFC—O—Rf—CFY-L-W wherein: W is a group of the general formula —Si(R1)α(OR2)3-α, wherein α=0, 1, or 2, preferably α=0, R1 and R2 independently have the meaning of linear of branched C1-C6 alkyl groups, optionally containing one or more ether groups, or C7-C12 aryl or alkyl groups, and preferably R1 and R2 are C1-C4 alkyl groups; L is an organic linking group; Y is F or CF3; and Rf is a group having an average molecular weight by number between 350 and 8000, preferably between 500 and 3000, and comprising repeating units having at least one of the following structures randomly distributed along the chain: —CFXO—, CF2CF2O—, CF2CF2CF2O—, CF2CF2CF2CF2O—, CR4R5CF2CF2O—, —(CF(CF3)CF2O)—, —CF2CF(CF3)O—, wherein X is F or CF3, R4 and R5 independently have the meaning of H, Cl, or C1-C4 perfluoroalkyl.

The invention discloses a ship oily sewage discharge ship shore monitoring system and method based on a Beidou short message, relates to the technical field of ship oily sewage discharge monitoring, solves the problem that shipmen directly discharge oily bilge water to cause control and supervision failure of ship sewage treatment. the technical scheme includes that the ship oily sewage monitoringsystem comprises an oil-water separation monitoring system, a Beidou satellite navigation system and a shore-based data processing system. The oil-water separation monitoring system comprises a PLC controller, a man-machine interaction module, a flow sensor and a data acquisition module; The Beidou satellite navigation system comprises a Beidou terminal, a Beidou satellite, a Beidou satellite ground station and a Beidou operation service station. The shore-based data processing system comprises a ship information checking sub-menu, a real-time monitoring sub-menu, a running time checking sub-menu, a dirty oil processing amount checking sub-menu, a real-time monitoring data checking sub-menu, an alarm control sub-menu and a shore-based data processing sub-menu, and has the effects of monitoring ship emission conditions in real time and reducing marine pollution caused by ships.

A collecting and switching device for oil and gas of an underwater wellhead comprises an oil control cover, a quick crossover coupling, an anti-settling baffle and a sinking structure, wherein the quick crossover coupling is arranged on the top of the oil control cover; the anti-settling baffle is arranged on the bottom of the oil control cover; the sinking structure is arranged on the bottom of the anti-settling baffle; the quick crossover coupling comprises a gate valve, a stand pipe, a plurality of bevel gear sealing devices, a funnel-shaped structure and a hose coupling; the stand pipe is arranged on a port of the upper portion of the gate valve; the bevel gear sealing devices surround the stand pipe; the funnel-shaped structure is connected to the stand pipe; the hose coupling penetrates in the funnel-shaped structure and is connected with the quick crossover coupling; and the hose coupling is provided with a gripping handle which is matched with a manipulator of an underwater robot. When a leaking accident occurs, a leaking point can be fastened by the collecting and switching device rapidly and effectively; after a pipe of the leaking point is switched, leaked oil or gas can be delivered to an offshore engineering ship through an oil or gas delivery pipe; the problem that loss and marine pollution which are caused by oil or gas leakage is solved; and safety of marine petroleum exploitation engineering is guaranteed.

The invention discloses a method for monitoring polycyclic aromatic hydrocarbons (PAHs) in surface seawater by means of remote sensing. According to the method, the large-area distribution of the remote sensing inversion concentration of the dissolved PAHs in the surface water of estuaries and bays is obtained by establishing a content algorithm model for quantitatively expressing the dissolved PAHs of the ocean by using water color parameters such as chromophoric dissolved organic matter (CDOM) concentration of the estuaries and the bays, and applying the content algorithm model to images of a geostationary ocean color imager (GOCI) of a first geostationary meteorological satellite sensor on the world. After the method is adopted, the contamination status of the PAHs in offshore waters can be monitored by means of remote sensing; the method is mainly used for monitoring the distribution characteristics of marine pollutants in ways of large area and high frequency. The remote sensing-based monitoring model for monitoring the distribution situation of the PAHs in the surface water of estuaries and the bay is proposed based on analysis of measured data and is applied to satellite data of the GOCI, and remote sensing monitoring of the PAHs concentration is realized in virtue of the remote component CDOM in the seawater.

The invention discloses an in-situ bioremediation method of a marine pollutant sedimentary environment. The method comprises steps that: a long dam is constructed at a remediation area which is a tidal flat with heavy-metal pollution or with a high eutrophication degree; mechanical plowing is carried out upon the tidal flat; suaeda heteroptera artificial sowing and colonization are carried out atthe remediation area in spring; fermented, dried and crushed livestock and poultry organic fertilizer is applied to the remediation area before lobworm seedlings are transplanted; and lobworm seedlings of above 10 setigers are transplanted into the remediation area. According to the invention, with lobworm and suaeda heteroptera, a lobworm-suaeda heteroptera in-situ combined bioremediation systemis constructed. Through the reformation upon the tidal flat, appropriate conditions are provided for the growth of lobworm and suaeda heteroptera. Lobworm has an advantage that in a sedimentary environment, pollutants such as heavy metals can be biologically utilized by lobworm. With the method provided by the invention, the advantage is reinforced, such that the bioavailability and the biological enrichment processes of the pollutants are promoted in suaeda heteroptera. Therefore, mutual ecological and metabolic pathway complementation of lobworm and suaeda heteroptera in the sedimentary environment is realized, such that the efficiency of the in-situ combined bioremediation process is improved.

The invention provides a biochar restorer for heavy-metal polluted marine deposits and preparation and restoration methods for the biochar restorer and relates to the field of marine pollution treatment. The preparation method provided by the invention comprises the following steps: 1) treatment of raw materials: drying plant raw materials, and carrying out crushing and sieving; drying sewage treatment flocculant wastes in the air, and carrying out crushing and sieving; and adding water into flocculating wastes to prepare turbid fluid, uniformly mixing the plant raw materials and the flocculant wastes according to a mass ratio of 1: 1, and carrying out baking and crushing, so as to obtain a raw-material mixture; and 2) preparation of restorer: pyrolyzing the raw-material mixture in a hermetic electric furnace in a nitrogen gas atmosphere, and carrying out cooling in the nitrogen gas atmosphere after pyrolyzing ends up, thereby obtaining the biochar restorer. After the restorer providedby the invention is used, the bioavailability level of heavy metals in the marine deposits can be obviously reduced, and the toxic action on marine benthos caused by the heavy metals is alleviated.

The invention relates to antibacterial capsaicin modified acrylic resin and a preparation method thereof. The antibacterial capsaicin modified acrylic resin is used for preventing and treating the biological pollution of a marine underwater device. The antibacterial capsaicin modified acrylic resin is prepared from a solvent, a monomer and an initiator through solution polymerization, wherein themonomer is a mixture of capsaicin acrylate, acrylic acid, butyl acrylate, methyl methacrylate and styrene. According to the preparation method, the average molecular weight of a polymer is influencedthrough controlling the changes of the factors of a polymerization temperature, an initiator concentration, a monomer concentration, a reaction time, and the like. The number-average molecular weightof the synthesized polymer is between 20,000 and 50,000, and the acrylic resin synthesized by the preparation method has quite good capacity of inhibiting a bacterium and a fungus, further, can be used for effectively preventing an animal, a plant and a microbe in water from adhering to the acrylic resin, and has a wide application prospect in the aspect of marine pollution prevention.

The invention belongs to the field of edible oil products and preparation method of edible oil and particularly relates to DHA (docosahexaenoic acid)-containing grain blend oil and a preparation method thereof. The DHA-containing grain blend oil is characterized by comprising the following components: DHA, soybean oil and corn oil. According to the invention, since the grain blend oil contains DHA, people can acquire enough DHA from daily diet, rather than acquiring DHA from marine products or aquatic products; in addition, as used DHA is from schizochytrium aggregatum which does not contain EPA (eiscosapentaenoic acid), thus avoiding marine pollution and having small fishy smell. The corn oil contains more than 65 percent of linoleic acid, 80-120mg / 100g VE and more than 500mg / 100g phytosterol, and the soyabean oil also is rich in vitamins. The DHA-containing grain blend oil can provide enough nutrition and DHA for all people.

The invention belongs to the technical field of marine environmental monitoring, and discloses a marine pollution early warning method based on marine biological behavior response, and the method is as follows: selecting marine environment parameters, determining biological indicators, setting an early warning threshold value; establishing an early warning model; collecting marine environment parameter values and biological behavior response data; receiving the parameter values and the data by a computer; comparing the parameter values and the set threshold value; if the parameter value exceeds the threshold value range, feeding back and outputting ''pollution'' by the computer, and determining the degree of the pollution; if the computer feeds back and outputs ''normal seawater environment'', comparing the data and the set early warning threshold value, if the data is in the threshold value range, feeding back and outputting '' normal biological indicators'' by the computer, if the data is not in the threshold value range, feeding back and outputting ''pollution'' by the computer, and determining the degree of the pollution. A three-grade early-warning structure of two types of exceeding-standard marine environmental parameter and abnormal biological behavior response is established in the method, and the method has the advantages of clear arrangement, high efficiency, comprehensiveness, high accuracy and good operability.

The invention provides a marine spill oil recovery device capable of recovering oil, belongs to the technical field of marine pollution prevention and discloses the marine spill oil recovery device combining a marine spill oil containment unit and an oil collection unit together. The marine spill oil recovery device comprises an oil containment boom and rotating disc type oil collection machines. Each independent floating body is provided with one rotating disc type oil collection machine. Rotating disc shafts of the rotating disc type oil collection machines on all the floating bodies are mutually connected through universal joints, and one end of a shaft which is formed by connecting the rotating disc shafts into a whole by the universal joints is connected with a rotating driving unit. The bottom ends of oil scraping sheets on the two sides of each rotating disc are communicated with an oil collection tube which is connected with an oil suction pump. The oil collection tubes float on the water surface and surround the outside of the oil containment boom. Each oil scraping sheet is provided with a shaft capable of rotating around the corresponding floating body. The marine spill oil recovery device is simple in structure and low in cost, has the dual characteristics of oil containment and collection and is capable of both containing oil and collecting oil.

The invention provides environment friendly cleaning agent for breeding and a preparation method thereof, belonging to the technical field of environment friendly breeding supplies for sterilizing and cleaning. The cleaning agent is prepared from concentrated sulfuric acid, citric acid, hydrogen peroxide, surfactant and water. The cleaning agent is non-poisonous, tasteless, powerful in sterilization and disinfection and capable of thoroughly cleaning black and odor bottoms at a high rate, achieving no residue but lasting effect; when in use, the cleaning agent can prevent the residual chlorine from being generated and cause no phosphorus pollution or marine pollution but seawater eutrophication; moreover, the cleaning agent can reduce the content of ammonia nitrogen and nitrite in the seawater and eliminate the harmful organic substances to purify the seawater; the cleaning agent mainly based on concentrated sulfuric acid, citric acid and hydrogen peroxide and diluted by the ratio of 1:(20-50) when in use is non-corrosive and non-irritant to skin, and the cleaning agent is safe, effective and free from the hazard to aquatic animals; for the cleaning agent contains no corrosive caustic soda and phosphorus residue from washing powder, the cleaning agent is friendly to the breeding environment; and the invention has the advantages of simple preparation process and low cost.

The invention relates to a floating garbage automatic collection system for a coastal gentle slope. With the increasingly serious marine pollution, the public pays more and more attention to marine pollution. However, due to complexity of marine pollution control, treatment method and effect do not achieve satisfactory results. The floating garbage automatic collection system for the coastal gentle slope is characterized in that a water pool built above the average tide level is included, a water tank is formed in one offshore end of the water pool, the water tank can swing up and down relative to the water pool, fixed protrusions are arranged at the bottom of the water tank, auxiliary buoys are arranged on two sides of the water tank, the bottom of the water pool communicates with the lower part of the coast through a discharging pipe, and a filter screen and a flap valve are separately arranged at two ends of the discharging pipe. The floating garbage automatic collection system forthe coastal gentle slope has a simple structure, can automatically collect floating garbage in seawater by utilizing the rising and falling of tides, saves energy and protects the environment, and isbeneficial to the protection of the marine environment.

The invention relates to a marine pollutant micro-plastic dyeing method, comprising the steps of mixing Coomassie brilliant blue and methylene blue in an organic solvent to form a dye solution; selecting from marine pollutants, a mixture containing micro=plastic; dyeing the mixture with the dye solution, and keeping vibrating for dyeing for a predetermined period of time. The marine pollution micro-plastic dyeing method has the advantages that Coomassie brilliant blue and methylene blue are mixed in an organic solvent to obtain the dye solution, marine pollutants are dyed via the dye solution,dyeing time is short, dyeing acts fast, and dyeing is convenient and fast and is simple to perform. Compared with traditional high-cost Nile red, Coomassie brilliant blue and methylene blue are lowerin cost and are applicable to wide researches on marine pollutant micro-plastics.

The invention belongs to the field of marine pollution treatment and particularly relates to a segmentation method of a sea surface oil spillage image. Particularly, a high-order Boolean energy function is established, wherein the high-order Boolean energy function comprises a first-order judging item and a high-order coupling item, the first-order judging item is obtained according to a single pixel energy function and an edge-preserving filter function through convolution so that a good effect of protecting the edge of an oil spillage zone can be achieved; and the high-order coupling item can be used for calculating the coupling performance of similar paired neighboring pixels in a pixel subset so that a long-strip-shaped oil spillage zone can be segmented precisely. The minimum value is obtained according to the established Boolean energy function by adopting a maximum flow / minimum segmentation algorithm, and each Boolean variable value corresponds to the optimum segmentation method of the oil spillage zone in the sea surface oil spillage image when the minimum energy value is adopted. By adopting the segmentation method, the influence of the edge diffusion phenomenon in the process of segmenting the long-strip shaped oil spillage zone can be overcome to a certain extent, and the segmentation accuracy can be improved.

The invention relates to a preparation method of a magnetic response dynamic coating, and belongs to the field of surface protection. The coating is applied to the fields including surface lubricationand marine pollution prevention. The coating comprises the following features that 1, an organic silicon film layer mixed with magnetic response particles is included; 2, the interior of the film layer is a porous structure, and the exterior of the film layer is a micro-nano rough surface; and 3, lubricating oil containing a bactericide and a corrosion inhibitor is stored in the film layer and the porous structure. By applying an external magnetic field, the internal magnetic particles vibrate so as to squeeze the coating to secrete the lubricating oil, so that the surface has long-acting lubrication effects; meanwhile, the magnetic particles vibrate to form a dynamic unstable surface, so that effective protection is realized through the synergistic effect between a super-lubricating surface and the dynamic surface; and finally, the service life of the super-lubricating surface is greatly prolonged, and anti-corrosion and anti-fouling functions are enhanced.

The invention relates to the technical field of collecting and sampling devices, and discloses a collecting and sampling device for a marine pollution ship. The collecting and sampling device comprises a connecting rod, the bottom of the connecting rod is fixedly provided with a circular tray, positioning holes are formed in the front surface of the circular tray, the middle part of the circular tray is movably connected with a supporting rod in a sleeving manner through a rotating shaft, the top of the supporting rod is fixedly provided with a collecting bottle, the right side of the collecting bottle is fixedly connected with an L-shaped pipe, the bottom of the L-shaped pipe is fixedly connected with a collecting pipe, the top of the inner wall of the collecting pipe is fixedly connectedwith a vertical bar, and both the left and right sides of the vertical bar are connected with circular columns. According to the collecting and sampling device for the marine pollution ship, throughthe cooperation of the circular tray, the rotating shaft, the supporting rod, a plug-pin and the positing holes, a user can conveniently regulate the included angle between the collecting bottle and the connecting rod, and further conveniently extract sea water in different horizontal positions, a proper length can be regulated to by pulling a telescopic rod, so as to sample the sea water in different depths.

The invention relates to the technical field of marine pollution treatment, in particular to an integrated clay spraying device for red tide treatment. The integrated clay spraying device for red tide treatment is divided into a ship body, a storage / feeding system, a material mixing system and a spraying system. A normal design is adopted in the ship body, free carrying is achieved in the treating area, the storage / feeding system is installed on a deck of the ship body and is contained with a material storing bin, a motor, a stirrer, a conveyor, a water bin and the like, continuous feeding is achieved, continuous type mixing of the modified clay and the seawater is achieved, the spraying system and the material mixing system are connected at a water outlet of the material mixing bin, and turbid solution of the modified clay in the material mixing bin is sprayed into a polluted sea area; the massive structure of the integrated clay spraying device for red tide treatment, the design principle is reliable, the production technology is ripe, the using operation is convenient, the practical value is high, and the applied environment is friendly.

The invention belongs to the field of photocatalysis, and particularly relates to a Z type MoS2 / Bi2WO6 heterojunction composite photocatalyst as well as a preparation method and application thereof. The MoS2 / Bi2WO6 heterojunction composite photocatalyst is composed of MoS2 and Bi2WO6, and the mass ratio of the MoS2 to the Bi2WO6 is (0.08: 1)-(0.12: 1). The MoS2 / Bi2WO6 heterojunction composite photocatalyst is obtained by two steps of operation, the preparation method comprises the following steps: preparing flower-like MoS2 by a hydrothermal synthesis method; then performing dispersing and stripping under an ultrasonic condition; adding Bi (NO3) 3.5 H2O and Na2WO4. 2H2O; and finally obtaining the MoS2 / Bi2WO6 heterojunction composite photocatalyst under a hydrothermal condition. The preparation method is simple in process, low in cost and easy to implement; a Z type MoS2 / Bi2WO6 heterojunction structure with a visible light response function is constructed; the photocatalyst prepared bythe method is uniform in particle size distribution to accelerate separation of photon-generated carriers, the photocatalyst has efficient photocatalytic activity and stability under visible light, has efficient killing and degrading effects on harmful microorganisms and dye pollutants in a water body, and has good practical value and potential application prospect in the fields of water body purification, marine pollution prevention and the like.

The invention relates to a method for estimating an excretion amount of nitrogen, phosphorus and organic carbon in marine shellfish aquaculture. The method comprises the following steps: (1) acquiring a test sample and treating the sample; (2) grouping and measuring total excretion amount of total nitrogen YN, total phosphorus YP and total organic carbon YC in each group of samples; (3) calculating average length Li and average excretion amount Yi of the ith group of experimental shellfishes; (4) establishing a regression model; and (5) predicting the overall breeding group by utilizing the established regression model. The method accurately calculates the excretion amount of the nitrogen, phosphorus and organic carbon of shellfishes in an aquiculture area, provides effective data for ecological monitoring, provides a scientific basis for large-scale aquiculture management of shellfishes and provides a guarantee for reasonably utilizing marine resources, controlling marine pollution and continuously producing marine shellfishes.

The invention provides a path planning method for cooperatively monitoring atmospheric pollution of a port ship by a shipborne unmanned aerial vehicle, and belongs to the technical field of the shipping industry and the environmental protection industry, and the method comprises the steps of making an assumption based on the monitoring complexity of the unmanned aerial vehicle on a running ship; based on the made hypothesis, defining a cooperative monitoring problem of the unmanned aerial vehicle and the loading ship; constructing a path planning model for cooperatively monitoring the atmospheric pollution of the port ship by the shipborne unmanned aerial vehicle; based on an improved artificial bee colony algorithm, expanding the search range of a food source neighborhood, and obtaining a global optimal path. According to the invention, a loading ship is used for carrying a plurality of unmanned aerial vehicles to cooperatively monitor the atmospheric pollution condition of a to-be-monitored ship in a port area, and a specific scheme for cooperative monitoring of the ship and the unmanned aerial vehicles is provided. According to the invention, execution of related emission regulations can be assisted, pollution of a ship to a port environment is reduced, comprehensive cruise cost is reduced, marine pollution disposal efficiency is improved, and maritime cruise monitoring and comprehensive law enforcement capabilities are improved.