111 results about "Marine pollution" patented technology

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 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 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 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 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.