371 results about "Red tide" patented technology

The present invention provides a method for preparing high-effective algae flocculant from non-toxic, easy-to-bio-degrade, cheap, natural macromolecular polymer modified clay. Said modification can obviously raise flocculation algae-removing capability of different clay, the algae-removing rate of various clays can be 20-95% Said high-effective algae flocculant can be used for controlling and treating large area red tide, fresh water algal bloom, and also can be used for removing harmful algae in river and drinking water plant.

The present invention relates to a method of tackling sea red tides and fresh water bloom using clay as algae flocculant. The effective component of the flocculant is hydrated magnesio-silicate salt in the laminated structure including upper and lower silicon-oxygen tetrahedron layers and sandwiched magnesium-oxygen octahedron layer. The hydrated magnesio-silicate salt is easy to prepare, low in cost and high in algae flocculating elimination effect.

The invention discloses an ocean environment visualization method. Based on the combination of the ocean environment three-dimensional scene and a parallel coordinate method, the method comprises the concrete steps of modeling the three-dimensional scene and the parallel coordinates of ocean environment; secondly establishing a multi-dimensional element integrated rendering and interactive extraction algorithm based on the three-dimensional scene and the parallel coordinates of the ocean environment; thirdly expressing the multi-dimensional ocean environment data linked features and cluster features. The method can be used for knowledge discovery of ocean phenomena such as storm tides, red tides, ENSO circulation and the like, and provides a new idea for understanding, rebuilding and discovering ocean phenomena.

The present invention provides one comprehensive technology of utilizing eutrophic and algalbloom polluted precipitant in in-situ algae killing, ventilation and phosphate fixing. By means of the said technology, bed mud or bankside clay is used in treating algalbloom in low cost. The said technology can eliminate algae effectively, increase dissolved oxygen concentration in water, reduce H2S and NH3-N produced, improve water quality, speed the degradation of organic in water, increase calcium in water, make bottom matter loose and ventilating, minimize and fix water body, bed mud and deposited phosphor in algae cell for no further utilization by living things. The present invention may be used in comprehensive treatment of red tide in sea, water bloom in fresh water, etc.

The invention discloses a water mobile robot network water area monitoring pre-warning system and a realization method thereof; the system comprises a plurality of water robots which are arranged on the seawater, and obtain geographic coordinate information through a GPS module and collect water data on fixed points; each water robot is provided with a sensor; after collecting the detection data information on the water, the water robots wirelessly transmit the collected data information to a shore server which processes the water area detection information collected by all the robots through GPRS; the system also comprises a plurality of client computers which send signals processed by the shore server to clients; and the client computers send the abnormality alarm of the water quality of the processed seawater to a mobile phone of a user through a GPRS wireless transmission technology. The system is specially designed for the actual needs of wireless mobile monitoring and control equipment under no-man environment on the sea, can effectively improve the red-tide pre-warning efficiency so as to improve the coastal water monitoring capability of our country and finally achieve good environmental benefits.

The invention provides a seedling inserting rope-shell combined artificial algal reef, comprising a frame type bottom groove which is formed by welding reinforcing steel bars, wherein the bottom groove comprises a bottom surface and four lateral surfaces. A steel plate is welded on the centre of the bottom surface, a vertical rod is welded on the centre of the steel plate, the other end of the vertical rod is welded with a steel ring, the steel ring is connected with the bottom groove through the seedling inserting rope, and a shell net bag is arranged in the bottom groove. The net bag made of waste shells are put into the frame type bottom groove to form a biological closeness reef and realize the resource utilization of the waste shells, so the algal reef has advantages of economic, simple and convenient. The invention adopts the seedling inserting ropes to insert the seaweeds and adopts the rough surfaces and porous structures of the shells and the spaces among the shells to provide a good habitat for microorganism and food organism or provide a best environment for rooting the seaweeds. When a certain number of the seaweeds are bred, a large number of oxygen can be produced, and carbon dioxide in the water can be reduced, so that the water can be purified, and the red tide can be prevented.

The invention relates to an ecological repairing method of sphagna macroalgae to an eutrophic open sea area, which is mainly characterized by comprising the following steps: selecting a cultivating area; fabricating a raft frame and a lace curtain of a cultivating facility; pulling seedlings of conchospores cultivated by a seedling net, conveying the seedling net, hanging the lace curtain and managing the dryness; managing the cultivation of ripe sphagna macroalgae in sea; picking the ripe sphagna macroalgae; and measuring nitrogen and phosphorus in texture. Sphagna can obviously reduce the danger of large-area red tide induced by excessive elements such as nitrogen, phosphorus, and the like in a neritic zone, can be used as a repair tool of water eutrophication in the neritic zone, is cultivated in the eutrophic sea area so that necessary nutrient substances can be provided and nutrient substances in sea can be transformed out of a pollution system through the harvest, therefore, the application of the ecological repairing method can achieve the purposes of inhibiting the growth of red tide microalgae, and releasing and eliminating eutrophication, and also obtains higher economical value.

Using electric power obtained by marine wind force and a tide, sea water is electrolyzed to produce fresh water, sodium, magnesium, calcium, potassium, caustic soda, chlorine, hydrochloric acid, sulfuric acid, hydrogen, oxygen or the like, at the same time, unloaded malts, saw dust and the like are fermented to brew ethanol, carbon dioxide generated here is used for photosynthesis to culture vegetables and oxygen generated here is supplied to a fish preserve and an under reef where fish live to culture fishes and also returned to sea water dropped in the concentration of oxygen to suppress the generation of a red tide.

A method and system for inactivating harmful organisms (e.g., red tide algae and dinoflagellates). The method includes the steps of supplying ambient air to a conditioning unit to generate conditioned air; passing the conditioned air to an ozone generator to generate ozone; mixing the ozone with water, from a water source, that contains the harmful organisms to generate ozonated water; delivering the ozonated water back to the water source to achieve dilution of the harmful organisms; at least partially isolating the water source from external water to prevent quick dilution of the ozonated water; and continually circulating water in the water source through the mixing step. The harmful organisms are inactivated by exposure to the ozone.

An apparatus employs a plurality of transducers distributed along a cable to sample a medium. Some of the transducers may be operated according to various sequences which specific wavelengths and / or magnitudes of emission of electromagnetic energy. Some of the transducers sample, detect or measure responses of the fluid medium to the emissions. Various other transducers may sample or measure temperature, depth or pressure, and flow characteristics of the fluid medium, and optionally flow characteristics above a surface or above a surface of the fluid medium. Such may allow identification and / or characterization of characteristics of the fluid medium and / or substances (e.g., contaminants for instance petroleum, phytoplankton, red tide microorganisms, nutrients, dissolved oxygen or other gasses). The apparatus may communicate with remote facilities, allowing monitoring, remote control, and / or analysis with or with information from other platforms.

The invention discloses a method for distinguishing marine red tide algaes by using MODIS ocean color remote sensing data. The method comprises the following steps: firstly, acquiring the data of a MODIS ocean color remote secondary product to calculate the relative height indexes of a spectrum; secondly, using an inverse absorbing coefficient and a backscattering coefficient of the MODIS ocean color remote secondary product to calculate the spectrum ratio, and then using the index methods of the relative height indexes of the spectrum and the fixed optical quantity to identify the red tide water regions; and finally combining the unit logarithmic pigment proportion, the chlorophyll ratio absorbance coefficient and the back scattering ratio to judge the algaes. According to the method, the information difference between the difference wave bands in the ocean color remote sensing data is utilized to simply and legibly judge and provide the red tide suspected regions and the suspected algaes in the marine region.

The invention relates to a lanthanide water treatment agent as well as a preparation method thereof, which is a novel water treatment agent. The chemical compositions of the agent are: a La2O3, b CeO2, c Pr6O11, d Nd2O3, e SiO2, f Al2O3, g MgO and a small quantity of unavoidable impurities, wherein, numeric areas of coefficients of a, b, c, d, e, f and g are respectively: 0.20<=a<=0.35, 0.32<=b<=0.55, 0<=c<=0.035, 0<=d<=0.035, 0.10<=e<=0.30, 0.03<=f<=0.09, 0.010<=g<=0.014. The water treatment agent can eliminate the organic pollution in water and can also eliminate most of inorganic pollution, and can treat general pollution and eliminate or inhibit the growth and reproduction of blue algae, green algae and red tide. The water treatment agent and the preparation method are favorable for treating the pollution of reservoirs, lakes, ponds and rivers with slow velocity of flow and for restoring the water ecological environment, and can also treat drinking water, culture water, irrigation water, landscape water, industrial wastewater, domestic wastewater, etc.

The invention discloses a method for real-time hydrologic monitoring and transmission based on a wireless sensor network. A system comprises a plurality of water surface nodes and a data terminal, the water surface nodes include general nodes and a hub node with a telecommunication function, the general nodes are used for acquiring underwater sensor data, the underwater sensor data are compressed and sent in a free wireless communication manner, an ad hoc network among the nodes converges information to the hub node, the hub node sends the information to the data terminal by means of charged wireless communication or satellite communication, and the data terminal has the functions of data processing, data storage, warning judgment, warning information sending and the like. The system and the method can be used for long-term observation of underwater physical, chemical and biological parameters in the field of scientific investigation, can be used for environmental monitoring and pollution warning of riverways and coastal waters and forecasting of disasters such as flood, tsunami and red tide, and have the advantages of low equipment cost, low communication cost, capability of achieving long-term continuous use and avoiding data to be tampered, high automation degree, no secondary pollution and the like.

The invention relates to a GIS-based marine disaster area extraction method. The method comprises the following steps: first, performing spatial matching alignment on a plurality of overlapped orthographic remote sensing images taken by an unmanned aerial vehicle by use of an SIFT algorithm to realize image splicing and get a wide-angle remote sensing panorama image; then, establishing the pixel coordinates of the remote sensing images, realizing geometric correction based on the coordinate transformation relationship between the coordinates of the pixels of the remote sensing panorama image in an image coordinate system and the ground coordinates, and superposing the geometrically-corrected remote sensing panorama image on a GIS platform through geographic coordinate location; and finally, implementing a red tide / oil spill identification and detection technology and vector data superposition operation before and after disaster on the remote sensing panorama image to realize red tide disaster and oil spill location and query and area measurement as well as typhoon and storm surge location and query and disaster area measurement. The method provides real-time field data for marine forecasters in rapid alert, and improves the ability of marine dynamic monitoring and disaster prevention and mitigation emergency monitoring.

The invention relates to a red-tide living thing image automatic identifying device and method, provided with a LED, a light source lens, a mobile room, an objective, a depth of focus lens and a camera; the LED is at the focus of the light source lens, the mobile room is between the light source and the objective, and the depth of focus lens is between the objective and the camera. The identifying method: obtaining image, preprocessing, detecting object, separating image, obtaining image feature, classifying and identifying object, and outputting result. It adopts a far-focus objective, adds an operating space between the mobile room and the objective, giving a development space to the mobile room, and increases the application range of the apparatus. It can automatically analyze images, heightening automation degree of the apparatus, and meets the request for field monitoring red-tide living things, hopeful to implement real-time monitoring the generating and disappearing course of the red tide, and on this basis, provides a precaution to the danger degree of the red tide.

The invention discloses a structure and an application of a three-dimensional fluorescence standard spectrum library used for recognizing toxic-to-fish algae. The hemolytic activity and the change of the toxic-to-fish algae in different growing periods and under the control of environmental factors, and a chlorophyll three-dimensional fluorescence spectrum of the toxic-to-fish algae are researched and contrasted with a chlorophyll three-dimensional fluorescence spectrum of large sample nontoxic-to-fish algae, three-dimensional fluorescence spectrum analysis and recognition methods are screened, a fluorescence characteristic spectrum closely related to the toxic-to-fish algae and the hemolytic activity of the toxic-to-fish algae is extracted, and three-dimensional fluorescence standard spectrum libraries of the toxic-to-fish algae and the nontoxic-to-fish algae are screened by a clustering method; based on the three-dimensional fluorescence standard spectrum libraries, a Fisher discrimination function for recognizing the toxic-to-fish algae and a function for discriminating the degree of the hemolytic activity of the toxic-to-fish algae are established respectively. Discrimination results obtained by utilizing the discrimination functions are more stable, accuracy and reliable. The method provided by the invention realizes highly correct diagnosis and recognition functions for the toxic-to-fish algae in an in-place red tide water body and the hemolytic activity of the toxic-to-fish algae.

A system for analysing red tide algae image consists of optical source for lighting microscopic imaging device, CCD digital camera, image collecting card, computer and image analysis software. It is featured as setting the first filter at incoming optical source of microscopic imaging device to generate exciting light, and setting the second filter on receiving mouth for filtering the microscopic image.

The invention relates to an algae setting material, which comprises 5 to 70 percent of natural fiber material and 30 to 95 percent of natural high polymer material, wherein, the natural fiber material is selected from plant fiber and / or animal fiber, and the natural high polymer material is selected from crab derivatives and / or shrimp derivatives and plant viscous juice with a proportion no less than 5 percent. The algae setting material is the natural substance without any harm to human bodies, livestock, environment as well as aquatic animals and plants, and has coagulation, adsorption, tangling and enmeshing function for the algae. When the use amount of the algae material is 0.1 to 10mg / L, the removal efficiency of the algae is over 95 percent. The obtained algae setting body of the flocculation has strong holding power, good performance of floating and drainability, little algae mug and convenient post-process, so the invention is applicable to urgent treatment of burst red tide in ease water and water bloom in fresh water.

The invention relates to a laser water quality detecting method and relative detector, which can via the on-line detection on each layer of water to attain the water quality in one dimension and different layers as the backward disperse water intrinsic curve; and via extracting information from said curve, attain the adsorb parameter, disperse parameter, and turbidity of water. Wherein, said intrinsic curve can be used in underwater depth measure and the detection and prediction of red tide. The invention comprises a control unit, a false random signal generate synchronous processing unit, a D / AC unit, a signal modulate unit, an A / DC unit, an optical emitter and an optical receiver. The invention has large information processing amount, high detecting efficiency, while it can reduce detecting time and cost when detecting large-scale water.

The invention provides a sea environment quality monitoring system based on Phidgets sensing control. The system comprises a Phidgets sensor network terminal node, a gathering node, a gate node, a background monitoring system and a client. The Phidgets sensor network terminal node collects data through a sensor adapter, and transmits the data to the gate node through an adaptive router and a multi-hop relay. The gate node packing the data after gathering the data by the gathering node, and forwards the data to a background database of the background monitoring system, and outputting a result by the client in a mode of latitude and longitude coordinates by utilizing Gmap technology. According to the invention, the Phidgets sensing control is employed, and through the sensor adapter, sea environment information is displayed through latitude and longitude coordinates. The invention has the following main innovations: (1) simulating a real sea geographical environment; (2) simplifying traditional sea environment monitoring and evaluation business working modes and methods; (3) constructing a sea environment monitoring database, issuing sea natural environment and calamity analysis forecasts and alarms timely, and automatically analyzing a sea red tide monitoring index.

The invention provides an efficient blue algae salvaging ship for improving salvaging and treatment efficiency of the blue algae salvaging ship. The efficient blue algae salvaging ship mainly comprises a ship body, a water decanter, a water pump, a filtration pipeline, a chemical feeding tank, an algae-mud dehydrating machine, a rear drainage pipe and a side drainage pipe. Algae-laden water on thesurface layer in a nose direction is collected into an algae water bin by the water decanter, is pressurized by virtue of the water pump, the pressurized algae-laden water enters the filtration pipeline to be dehydrated and then is conveyed into the chemical feeding tank and the algae-mud dehydrating machine, produced algae cake is loaded into an algae cake bin, tail water discharged by the filtration pipeline and the algae-mud dehydrating machine is discharged out from the stern direction by virtue of the rear drainage pipe and the side drainage pipe. The filtration pipeline is regularly back-washed by lifting the water decanter, switching a valve and utilizing the tail water of the algae-mud dehydrating machine. After blue algae salvaging is finished, water in the algae water bin, a pipeline bin and the chemical feeding tank is discharged outside the ship body by virtue of the water pump and a backwashing pipe, and the algae cake is transported to a shore to be treated. By implementing the efficient blue algae salvaging ship provided by the invention, a significant role is played for controlling blue algal bloom, water bloom and red tide, improving lake water quality, removing phosphorus and nitrogen in water and alleviating water eutrophication.

This invention discloses a paralysis shellfish poison surface plasm resonance rapid measurement, which belongs to environment chemistry and biology molecule detecting field. The method is the following: to add quantitative PSP anti-body to the PSP sample solvent; then to flow on the gold sputtered plate with PSP solidified; to measure the over PSP anti-body in the solvent by use of plasm resonance sensor SPR detector to indirectly measure the concentration of the PSP solvent. This method is especially applied in quantitative study and regular or emergency monitor of PSP in freshwater algae or sea red tide.

A main frame of a valveless lifting deep water net cage comprises a float pipe and a connecting frame, wherein the float pipe comprises an inner round float pipe and an outer round float pipe which are arranged at concentricity and are fixed on the same level surface through the connecting frame; and both the inner round float pipe and the outer round float pipe are provided with water inlet / outlet ports and air inlets. When the air inlets and the water inlet / outlet ports are opened at the same time, and water is fed in the float pipe from the water inlet / outlet ports, the net cage can be controlled to submerge to a predetermined depth; when compressed air is fed in from the air inlets, the water in the float pipe is discharged from the water inlet / outlet ports so as to ensure that the net cage rises to water surface. The main frame of the valveless lifting deep water net cage can be used to carry out safety aquatic breeding in an open sea area at a depth of between 20 and 60 meters; before a typhoon or a red tide, the net cage can be settled to a predetermined depth within 15 to 20 minutes when submerged at a depth of 8 m, thereby avoiding damages on the net cage caused by typhoon and ocean wave, or damages on the fishes bred in the net cage caused by the red tide.

The invention aims at providing a device and a process for monitoring oceanic planktonic microorganism content in real time and early warning red tide based on total organic carbon (TOC) automatic analysis. By increasing the size of a sample injection tube and improving oxidation capacity of an oxidation reactor, the TOC including planktonic microorganism in seawater can be automatically and continuously determined on line. According to the corresponding relation of oceanic planktonic microorganism indexes (including number, chlorophyll content, biological turbidity and the like) and the TOC,the oceanic planktonic microorganism content is monitored in real time. According to the variation trend of the oceanic planktonic microorganism content, early warning of red tide disasters is provided. Compared with other analytical methods, the device and the process for monitoring the oceanic planktonic microorganism content in real time and early warning the red tide is simple, convenient andaccurate.

The invention relates to the technical field of water quality monitoring, in particular to a water environment monitoring method based on multi-source remote sensing and machine learning, which comprises the following steps: preprocessing data of a monitoring station for researching historical water quality of a water body; processing, analyzing and fusing the multi-source historical remote sensing image of the research area to obtain multi-source historical remote sensing data; carrying out space-time fusion on the actual water quality parameters of the monitored water body and the corresponding multi-source historical remote sensing data to form a water quality inversion data set, and preprocessing the water quality inversion data set; inverting water quality parameters by using a machine learning algorithm, and preferentially selecting a water quality inversion model through performance evaluation; according to the method, compared with the prior art, real-time monitoring and early warning of water environment pollution events such as red tide in a wide area range of an offshore area are achieved, the space-time precision of remote sensing data monitoring is effectively improved, and the method has the advantages that the real-time monitoring and early warning of the water environment pollution events such as the red tide in the wide area range of the offshore area are achieved. Environmental adaptability and practicability of the model are enhanced, and offshore water environment pollution control is supported.

The invention discloses a seawater net cage aquaculture method for stichopus japonicus. The seawater net cage aquaculture method comprises the steps of selection of an aquaculture sea area, net cage arrangement, stichopus japonicus fry feeding and aquaculture management. In the selection of the aquaculture sea area, the sea area is required to be 1,000-2,000m off the shore, is high in water quality, does not have a red tide and is rich in natural organic baits; in the net cage arrangement, a net cage rack consists of wood boards and floaters, and 4-8 rows of net cage racks are arranged in the sea in the tide direction; 20-50 net cages are connected in each row; in the stichopus japonicus fry feeding, the specification of selected fries is 60-80 pieces per kilogram, and the density of the fed fries is 4.5-5.0 kilograms per cage; healthy stichopus japonicus fries are selected; the aquaculture management comprises four steps of feeding baits, preventing harmful organisms, cleaning impurities and setting a warning device. The seawater net cage aquaculture method is convenient to use; by net cage aquaculture, the possibility that the stichopus japonicus is injured can be reduced, the survival rate of the stichopus japonicus is increased, the yield of the stichopus japonicus is improved, and the demand of the market can be met.

The invention discloses a shipborne view field adjustable sea level observation device and method. By the design of a shipborne positioning device, a high-definition camera and a fixing mechanism, the shipborne view field adjustable sea level observation device and method are established, and are realized by the steps of time synchronization, device installation, view field adjustment, observation, information processing and the like. Based on the high-definition camera shooting technique and the high-precision positioning technique, and the view field adjustable fixing mechanism is designed, the information processing method is disclosed, and the sea level observation and area estimation are realized. The shipborne view field adjustable sea level observation device and method, which are disclosed by the invention, can develop extremely great practical value on field positioning observation and area estimation of the ocean phenomenon and process of sea level red tide, oil spilling, frontal surface, underwater rocks and the like.

The invention belongs to disaster prevention and mitigation strategies in the field of water ecological safety, and further relates to the fields of control and treatment of red tide in offshore water areas, and specifically to modified clay capable of eliminating the red tide with high efficiency. The modified clay is a compound material prepared from inorganic aluminum salt, clay mineral and an oxidant in a ratio of 500: 0-1: 1-50 by weight. When in use, the modified clay is uniformly mixed with seawater into a uniform suspension which is sprayed on the surface of the red tide water according to a certain concentration, so the effect of rapid elimination of a large number of red tide organisms in water is achieved. The modified clay can solve the problems of harsh application conditions and difficult highly-efficient large-scale application of common PAC modified clay in treatment of the red tide.

The invention discloses a direct sprouting process in a nori spatfall screen seedling-culturing chamber. The nori seedling which is cultured by using the direct sprouting process in the nori spatfall screen seedling-culturing chamber has the advantages that the cells are steady and strong, the delayed effect of algal filament layers is sufficient, the nori is cultured in a seedling-culturing pool so the nori is free from being influenced by the red tide and small tide, the survival rate of nori seedling is high, and the output of nori is greatly increased.

The invention relates to an optimal distinguishing method for a red tide water body and a main algae thereof, which comprises the following steps: (1) acquisition of spectroscopic data, which comprises the processes of laboratory culture of a red tide algae, measurement of the remote sensing reflectance and the post treatment of the spectroscopic data; and (2) analysis of the spectroscopic data, i.e. Carrying out comparison of spectral absorption characteristic parameters by a spectral absorption characteristic parameter extraction method through utilizing ENVI (The Environment for Visualizing Images) software, extracting wavelengths of a reflection peak and an absorption peak by a spectral differential method and carrying out comparison analysis on the water bodies before and after the red tide main algae is inoculated. According to the invention, by the spectroscopic data of different red tide main algae, which is obtained in a laboratory and the spectroscopic data flow processing, an abnormal value is removed to obtain a remote sensing spectral curve of Karenia mikimotoi, alexandrium tamarense and AmPhidinium; and the foundation is laid for the extraction of the absorption characteristic parameters and the spectral differential method.