46 results about "Seawater pollution" patented technology

The invention discloses a system for desalinating seawater by waste heat from a power plant. The system comprises a condenser circulating seawater taking branch system, a seawater multi-stage fresh evaporation branch system and a boiler smoke waste heat heating seawater circulating branch system which are divided according to the flow direction of seawater to be desalinated, and also comprises a vacuum pumping branch system, and a fresh water and seawater pollution discharge branch system, wherein the vacuum pumping branch system and the fresh water and seawater pollution discharge branch system are used as auxiliary systems connected with the seawater multi-stage fresh evaporation branch system. A multi-stage fresh evaporation method is adopted by the system. Because the waste heat of a condenser and boiler smoke of a power plant is utilized, energy sources needed for desalinating the seawater in a conventional distillation method are omitted, the operating cost in desalinating the seawater in a distillation method is reduced, and simultaneously the prepared fresh water is distilled water which can be partially used as supplementing water for the boiler of the power plant, the treatment cost for softening water in the power plant is saved, energy is saved, and the environment is protected.

The present invention relates to an additive composition for shrimp feed and a method for producing the same, and more particularly to an additive composition for shrimp feed and a method for producing the same which both increases the survival and the growth rate of aquacultural shrimp and prevents seawater pollution. The present invention discloses a method for producing an additive composition for shrimp feed, which includes the steps of: mixing microorganisms such as saccharomyces, bacillus subtilis and lactobacillus, natural products such as red ginseng, tangle, agar, salicornia herbacea L, peucedanum japonicum thunberg, sea lettuce, dandelion, atractylodes chinensis, dropwort and Puerariae Radix, and fermented fruits such as apple, orange, mandarin, pineapple and melon; and extracting the ferment from the mixture, which provides an antiviral effect, increases immunity, improves digestion, promotes growth, decomposes remnant feed, etc.

The invention discloses a seawater pollution area identification method and device based on a high-resolution remote sensing image, and belongs to the field of digital image processing. The method comprises: firstly, performing sea-land automatic classification on remote sensing images through a supervised learning algorithm, a classification result can reach a high precision level through processiterative clustering, and meanwhile, compared with an existing sea-land boundary analysis and classification method, the operand being small; then, using the chlorophyll concentration difference andthe brightness difference of pollutant shadows existing between the marine pollution area and surrounding seawater; combining a normalized vegetation index related to chlorophyll, a normalized water body shadow index related to brightness, a segmentation-based image interpretation thought and a human eye vision-based saliency mechanism in remote sensing interpretation; through threshold segmentation, realizing extraction of a marine pollution area, respectively extracting an area with excellent water quality and a severely polluted area, and further obtaining a pollution transition area. The method provided by the invention provides convenient and accurate reference for marine pollution prevention and treatment.

The invention belongs to the technical field of seawater pollution monitoring and particularly relates to a seawater pollution monitoring device and method. In the prior art, when seawater pollution is detected, seawater with different depths cannot be detected, and a seawater pollution condition cannot be accurately reflected. In order to solve the above problems, the monitoring device comprisesa ship body; a propeller is arranged at a tail part of the ship body; a cabin is arranged at a top of the ship body, and a bracket is fixedly mounted at the top of the ship body; a top plate is fixedly mounted at the top of the bracket; a moving plate is slidably mounted at the bottom of the top plate; and a winding shaft is rotatably mounted on one side of the moving plate, a winding rope is arranged on the winding shaft, and a wireless motor is fixedly mounted at one end of the winding rope. In the invention, the seawater at different depths can be conveniently detected, the seawater pollution condition can be more comprehensively known, meanwhile, an inner portion of a detection box can be conveniently cleaned, and the situation that a detection result is affected by seawater residues is avoided.

Provided is a stereo fishing ground capable of effectively utilizing idle resources along the coast to scientifically and efficiently perform mariculture. A coarse filtering pond, a combined filter pipe, a fine filtering pond, a settling pond, a pipeline, a valve and a fishpond breeding water channel form a seawater filtering and circular breeding system. A heat-conducting oil boiler, a solar heat-conducting oil heating device, a wind driven generator, a solar battery pack, a power distribution device, a heat-conducting oil pipeline, a one-way valve, a fishpond water temperature adjusting section and the like form a water temperature adjusting system, and the two systems and a main body frame building are combined to form the stereo fishing ground. The stereo fishing ground can scientifically and efficiently utilize idle intertidal zone resources along the coast to perform the mariculture, and the problems including severe inshore breeding seawater pollution, large offshore breeding cost, high ocean-going fishing risk and the like are solved.

The invention provides a hull garbage cleaning and recycling underwater robot for a hull and an operation method. The underwater robot comprises a power distribution cabinet, a control box, a cleaningand washing robot and a recycling assembly; the control box is arranged at the top of the hull and is used for controlling the cleaning and washing robot; the cleaning and washing robot is arranged on the surface of the hull and is used for clearing garbage on the surface of the hull; the control box comprises a first power module, a first control module, a first processing module, a first communication module, a display module and an umbilical cable; the recycling assembly is arranged at the top of the hull and is used for recycling and filtering the garbage generated on the surface of the hull, and the recycling assembly comprises a filter and a crusher, so that workers can directly control the cleaning and washing robot to carry out cleaning and washing work on the hull on the top of the hull, the garbage generated in the cleaning and washing process is recycled while the hull is cleaned and washed, the problem that a ship must be periodically docked for cleaning is solved, and theproblem of seawater pollution caused by the garbage generated by the hull cleaning is avoided.

The invention relates to a preparation method of an absorbent for absorbing and degrading seawater pollutants. The preparation method comprises the following steps: (1) activating a strain for fermentation production of biological cellulose so as to prepare a seed broth for fermentation production; (2) adding the seed broth into a fermentation culture medium with the inoculation scale of 8%-12% in volume, and inoculating the fermentation culture medium with a petroleum degrading strain; (3) fermenting at 25-35 DEG C in a standing state for 8-20 days; and (4) collecting a biological cellulose film generated on the surface of the culture medium, washing the biological cellulose film by an alkali liquor, and drying the washed film until the water content of the film is lower than 50%. The absorbent obtained by the preparation method can fix the petroleum degrading strain in the three-dimensional structure of the biological cellulose to form the film structure, the film structure can be directly laid on the water surface, and thus the contact area of the absorbent and the water surface is increased; simultaneously, the property of the biological cellulose is stable, the petroleum degrading strain in the biological cellulose can be slowly and efficiently released to absorb and degrade the petroleum pollutant in water, so that the absorbent has the features of immobilization, high efficiency, long-term effectiveness and the like.

The invention relates to the technical field of ocean development devices, and particularly relates to a seabed sludge development and salvage device and a using method thereof. The seabed sludge development and salvage device and the using method thereof aim at solving the problem that an existing device cannot well conduct salvage. According to the scheme, the seabed sludge development and salvage device comprises a ship body, wherein a storage cavity is formed in the ship body; the upper side of the storage cavity communicates with a guide groove body; a first filter net is fixedly connected into the guide groove body; a plurality of placing blocks are arranged on the lower side of the first filter net; a second filter net is placed on the upper sides of the placing blocks; and the upper side of the second filter net is fixedly connected with a first sewage pump through bolts. The seabed sludge development and salvage device is simple in structure and convenient to use, suction of sea mud in offshore or far sea can be achieved, the collecting range is enlarged, meanwhile, continuous collecting can be conducted, the time for extending into the seabed is shortened, the working efficiency is improved, meanwhile, in the collecting process, the situation that the sea mud leaks in the midway or makes contact with the shallow sea, and consequently local seawater pollution is causedis avoided, and the stability of the environment is ensured.

The invention relates to a near-shore seawater pollution and seafloor sludge clearing device. The device comprises a platform floated on the sea surface, a storage battery, a photovoltaic conversion unit, a control unit, an electrolysis unit, a fixed unit and a fluid power unit, wherein the storage battery is arranged on the platform; the photovoltaic conversion unit is arranged on the platform and charges the storage battery under the control of the control unit; the electrolysis unit is arranged at the lower part of the platform and enters the seawater, and is connected with the storage battery under the control of the control unit to electrolyze the seawater; the fixed unit is arranged at the bottom of the platform and is used for fixing the pollution clearing device at a specific position when needed; and the fluid power unit is arranged at the bottom of the platform and enters the seawater and moves the platform in the seawater under the control of the control unit. The near-shore seawater pollution and seafloor sludge clearing device has the following beneficial effects of convenience in use and low cost.

The invention relates to a CPS-based offshore oil leakage condition real-time embedded detection device, and belongs to the technical field of oil detection. The device comprises a power supply module, an STM32 single-chip microcomputer module, a position driving module, a petroleum density detection module, a Beidou satellite positioning module, an NB-IoT communication module and an alarm module.The detection device is divided into two parts from top to bottom, a fixing frame is arranged on the upper part of the detection device, and four solar panels facing different directions, a warning lamp and a Beidou satellite receiver are installed on the fixing frame; the lower part is submerged in the seawater, propellers are arranged on the two sides of the device, and a petroleum density detection device is arranged below the device. The device can detect the density of petroleum in seawater in a certain area after petroleum leakage in real time, has a position driving function, can be controlled at a fixed coordinate point, cannot move along with offshore stormy waves, provides real-time and effective data support for offshore oil well leakage or seawater pollution conditions after an offshore oil tanker overturns, And an area with relatively serious petroleum leakage can be warned.

The invention relates to the technical field of ocean water sampling detection equipment, and discloses a pressure type water sampler for ocean detection, which comprises a water sampling cylinder body, one side of the top end of the water sampling cylinder body is provided with a one-way gas injection valve communicated with the inside of the water sampling cylinder body, and one side of the top of the inner cavity of the water sampling cylinder body is provided with an exhaust pipeline communicated with the outside of the water sampling cylinder body. A pressure-bearing ball I is fixedly mounted at the top end of the exhaust pipeline, and a water inlet pipeline communicated with the outside is arranged on one side of the bottom of the inner cavity of the water sampling barrel. According to the pressure type water sampler for ocean detection, a plugging piston is limited, and the plugging piston is driven to overcome the elastic force of a reset spring to move upwards through the buoyancy of a buoyancy piston and the pulling force of a traction rope; and according to the water sampler, the water inlet pipeline can be effectively blocked, so that the phenomenon that seawater collected in the water sampler leaks or the problem that the seawater is polluted by seawater at other depths is avoided, and the stability and the reliability of the water sampler in the using process are effectively improved.

The invention discloses an oil gas pipeline automatic maintenance robot. The oil gas pipeline automatic maintenance robot comprises pipelines correspondingly connected side by side and further comprises a floating machine body, wherein the top of the floating machine body is provided with a solar cell panel, the floating machine body is further provided with inflatable air bags, internally provided with a storage battery and further provided with a pulling machine body, the pulling machine body is internally provided with a rotating digging rope rotating wheel, the digging rope rotating wheelis provided with a digging rope, the digging rope is internally provided with a cable connected to the storage battery, and the end portion of the digging rope is connected with a maintenance machinebody. According to the oil gas pipeline automatic maintenance robot, sliding in seawater up and down of the maintenance machine body can be further driven through the sliding of the cable, so that maintenance can be further performed on the pipelines through the maintenance machine body, and seawater pollution caused by pipeline leakage can be further avoided.

The invention discloses a sampling device for radiation leakage sea area environment detection. Underwater robot comprising an underwater robot body, wherein a sampling cavity is formed in the underwater robot main body; a seawater sampling device is arranged in the sampling cavity; the seawater sampling device can automatically sample seawater at different depths for four times; therefore, the seawater pollution degree is detected; a marine organism capturing device positioned on the lower side of the seawater sampling device is arranged in the sampling cavity and is used for capturing smallmarine organisms; therefore, the influence of radiation on marine organisms is conveniently researched; a seabed sampling device is arranged in the sampling cavity and located at the lower side of themarine organism capturing device; a power switching apparatus is arranged in the sampling cavity and located at the left side of the marine organism capturing device. According to the present invention, with the marine organism sampling apparatus, the seawater, the marine organisms and the seabed can be sampled during the single submergence sampling process so as to reduce the radiation quantityon the personnel.

The invention discloses a pseudomarine bacterium strain with a remarkable malathion degradation effect and application of the pseudomarine bacterium strain. The malathion degrading bacterium disclosed by the invention is pseudomarine bacterium (Pseudomarine sp.) derived from deep sea hydrothermal liquid, the strain number of the pseudomarine bacterium is R2059-CB1-ML, and the registration number of the pseudomarine bacterium in the China General Microbiological Culture Collection Center is CGMCC (China General Microbiological Culture Collection Center) No. 23970. The strain can degrade malathion, can treat seawater pollution, and can be used for marine environment improvement.

The invention relates to the field of offshore oil and gas engineering, in particular to a deepwater pipe cable connection protection device for offshore oil drilling and an application method. According to the technical scheme, a self-breaking protection connector is connected between a deepwater production facility and a deepwater pipe cable, the self-breaking protection connector comprises an inner connector and an outer connector, the tail end of the deepwater pipe cable is connected with the outer connector, the upper end of the deepwater production facility is connected with the inner connector, and a weak protection block is arranged at the tail end of the inner connector; the inner joint is matched with a trapezoidal limiting hole formed in the inner end of the outer joint, and an inner conveying pipe is arranged in the outer joint and the inner joint; and an inner pipe self-breaking joint is arranged on the inner conveying pipe. The device has the advantages that after deepwater operation is completed, the self-breaking protection connector and the inner pipe self-breaking connector are disconnected through mechanical traction, the deepwater pipe cable and a deepwater production facility can be disconnected, the deepwater pipe cable can be recycled, the deepwater production facility is left on the seabed, manual participation is little, safety and reliability are achieved, the inner pipe self-breaking connector and the inner pipe self-breaking connector can achieve self-sealing, and the service life of the deepwater pipe cable is prolonged. The seawater pollution is avoided.