10 results about "Seston" patented technology

The invention discloses a bacterial-algae symbiotic integrated culture tail water treatment system and method. The culture tail water treatment system comprises a regulating reservoir, a submersible sewage pump, a multi-stage coupling biochemical treatment unit and a shellfish purification unit, the submersible sewage pump is arranged at an outlet of the adjusting tank; the multi-stage coupling biochemical treatment unit comprises an aeration biochemical pool, a biological filter bed and an aerobic denitrification microalgae biological membrane unit which are sequentially connected in series; the biological filter bed takes a rice husk layer and a pelelith layer as biological carriers; the aerobic denitrification microalgae biological membrane unit comprises microalgae and functional bacteria, the functional bacteria are bacilli weldmanni and escherichia marmoreus, the microalgae fix CO2 and release oxygen through photosynthesis, and the functional bacteria degrade nitrides through heterotrophic nitrification-aerobic denitrification; the shellfish purification unit is arranged at the water outlet end of the multi-stage coupling biochemical treatment unit and is used for filtering residual microalgae and suspended particulate matters in the water body. The invention further provides a tail water treatment method, nitrogen and phosphorus are efficiently removed, energy consumption is reduced, secondary pollution is avoided, and resource utilization can be achieved.

The invention relates to the field of aquaculture, in particular to the field of bottom-sowing shellfish intermediate culture, which comprises a fish and shrimp culture pond, a bottom-sowing shellfish intermediate culture pond, a bait siphon and a water return system, wherein the fish and shrimp culture pond and the bottom-sowing shellfish intermediate culture and culture pond are adjacently arranged and are communicated through a bait siphon, so that water rich in plankton and organic suspended particulate matters on the upper layer in the fish and shrimp culture pond is siphoned to the bottom-sowing shellfish intermediate culture and culture pond; the bottom-sowing shellfish intermediate culture pond enables water to flow back to the fish and shrimp culture pond through a water return system to complete water circulation. The upper water in the fish and shrimp culture pond is siphoned to the bottom-sowing shellfish intermediate culture and culture pond, sufficient bait can be provided for shellfish, meanwhile, the shellfish has a purification effect on water quality in the culture process, the purified water flows back to the fish and shrimp culture pond, part of water treatment facilities can be replaced, and energy consumption and nutrient substance discharge can be reduced.

The present invention provides an industrialized fish-algae recirculating aquaculture system and method, belonging to the technical field of recirculating aquaculture; the industrialized fish-algae recirculating aquaculture system includes a fish-algae aquaculture system, a fiber rotary disk filtration system and a magnetic loading flocculation system; the fish-algae aquaculture system can realize the co-culture of fish and algae in the same space, and the algae can convert nutrients such as CO2 exhaled by fish, nitrogen and phosphorus in the aquaculture water body into its own substances such as proteins, polysaccharides, vitamins and lipids, and release oxygen, rapidly improving the aquaculture water quality; the fiber rotary disk filtration system and the magnetic loading flocculation system can effectively remove suspended particles, oils, algae, bacteria, viruses, etc. in the aquaculture sewage, realizing the deep purification of the aquaculture sewage, and the purified water quality meets the fishery aquaculture standard and can be directly recycled, and there is no sewage discharge in the whole system. The industrialized fish-algae recirculating aquaculture system and method of the present invention can realize high-density, high-stability and low-energy-consumption recirculating aquaculture.

The utility model belongs to environmental monitoring device technical field discloses a kind of surface water body multipoint simultaneous sampling device, including base and the liquid inlet being opened in the base, the base is fixedly connected with multiple mounting plates at equal angle circumferentially, the base is fixedly connected with negative pressure assembly, multiple the mounting plate is fixedly connected with water suction assembly and cleaning assembly on, the utility model is configured by each sampling point, and the cleaning assembly of backflushing can be reversed to water suction unit Reverse flushing, effectively remove the suspended particulate matter, algae, biological membrane and other impurities, such as jam, improve the water absorption efficiency of each point, ensure that sufficient water sample is smoothly extracted in each water suction interval, can also maintain the purity of subsequent sampling water sample, avoid the continuous pollution of subsequent sample due to dirt residual accumulation, ensure the accuracy of single point water sample detection data.

The present invention discloses a method for synergistic inversion of multi-component concentrations of suspended particulate matter in offshore waters, comprising the following steps: collecting measured data sets, including hyperspectral remote sensing reflectance data, total suspended particulate matter concentration TSM, organic suspended particulate matter concentration OSM, and inorganic suspended particulate matter concentration ISM; and performing preprocessing; calculating spectral feature quantities characterizing the concentrations of ISM and OSM according to MODIS band remote sensing reflectance data; inputting the ISM and OSM concentration data and their corresponding spectral feature quantities into the XGBoost algorithm for training to construct a remote sensing inversion model for the concentrations of ISM and OSM; evaluating the model accuracy using an independent validation sample set and a satellite-ground matching data set; the present invention provides an important technical means and data support for the research on marine water quality, ecological environment assessment, and related biogeochemical processes.

The utility model provides a riverway water body remediation device, relates to the technical field of water treatment, and solves the technical problems that a traditional riverway water body treatment method in the prior art is high in cost, easily causes secondary pollution and lacks sustainability. The riverway water body remediation device comprises a base used for being installed and placed in a riverway needing to be remedied; the advection frame is fixedly mounted on one side of the upstream face of the base and used for guiding water flow to flow horizontally, so that suspended particles are separated from water through gravity; the filtering device is fixedly mounted on the upstream face and is used for filtering river channel water body restoration in the water body in the river channel; and the floating bed device is mounted on the top surface of the base so as to absorb nitrogen and phosphorus elements in the water body by placing strong pollution-resistant aquatic plants. Through the ingenious combination of the base, the advection frame, the filtering device and the floating bed device, the technical problems that an existing traditional river channel water body treatment method is high in cost, secondary pollution is easily caused, and sustainability is lacked are effectively solved.

This invention relates to the field of intelligent formulation optimization technology for aquatic feed based on computer vision, and particularly to a method and system for optimizing aquatic feed formulation based on artificial intelligence. The method includes controlling an underwater vortex light source to emit a spiral phase light field into the water body, and acquiring a topological phase interference holographic image obtained from the backscattering of suspended particulate matter. By extracting the phase distortion matrix and combining it with the initial spiral phase matrix, the optical topological charge splitting step value is calculated, thereby separating the degraded background pixels caused by suspended bait and extracting the charge splitting visual tensor induced by the feeding of target organisms. The neural network transforms the charge splitting step frequency into dynamic penalty weights of hydrodynamic partial differential conditions, calculates and outputs mechanical kinetic energy intensity parameters, and adjusts the output aquatic feed formulation execution data. This solves the technical problem of artificial intelligence misjudging feeding behavior and outputting redundant attractant formulations due to underwater light curtain scattering.

The invention discloses a gradient removal method for suspended solids in a water body for three-dimensional polyculture of fishes with different feeding habituals, which belongs to the technical field of aquaculture and comprises the following steps: respectively mounting different floating nets on a water surface layer and a middle layer of an aquaculture water area; putting filter-feeding fishes in the water surface layer of the culture water area, putting scraping-feeding fishes in the middle layer of the culture water area, and putting benthic organisms in the bottom layer of the culture water area; floating feed is put 2-3 times every day on the water surface layer of the aquaculture water area, a 40% fermented material and 60% sinking material mixed feeding mode is adopted on the bottom layer of the aquaculture water area, feeding is conducted at night, and residual feed is cleaned and recycled once every day; the concentration of the suspended particulate matters and the turbidity of the water body are monitored in real time, when the concentration of the suspended particulate matters is larger than a threshold value, the proportion of scraping-feeding fishes is increased, the proportion of benthic organisms is reduced, and when the concentration of the suspended particulate matters is smaller than the threshold value, the proportion of filter-feeding fishes is increased. Meanwhile, the stability problem of the polyculture system is solved through a dynamic proportion regulation mechanism.

The application provides an improved semi-analytical algorithm for inverting seawater inherent optical parameters. The method generates an inclusive synthetic dataset containing 200,000 data sets based on IOCCG report 5, and constructs an improved semi-analytical algorithm model (DQAA model) based on the QAA semi-analytical algorithm and a three-level deep learning model. The first-level deep learning model is fused to invert the particle backscattering coefficient b bp (λ), the second-level deep learning model introduces the ultraviolet band R rs (360)+ R rs (visible) to invert the key parameters ζ and ε, and the third-level deep learning model inverts the non-algal particle absorption coefficient a d (443) technology, and outputs the colored dissolved organic matter absorption coefficient a g (443) inversion result, and further obtains the phytoplankton absorption coefficient a ph (443). After being verified by the IOCCG simulation dataset and the NOMAD measured dataset, the method realizes low error (RMSD<0.13 m ‑1 , MARD<0.51) inversion, fully utilizes the UV band, and can effectively separate the water body phytoplankton, colored dissolved organic matter and inorganic suspended particle absorption coefficients in water color remote sensing, and has strong universality and robustness.

The utility model relates to the technical field of tail water filtration, in particular to a large-flow aquaculture tail water suspended particulate matter removal device which comprises a first-stage filtration device, a transition groove and a second-stage filtration device, the first-stage filtration device comprises a first-stage filtration shell, a central pipe, a water inlet pipe, a partition plate, water seepage holes, a baffle and a water outlet pipe, the outer end of the water outlet pipe of the first-stage filtering shell is communicated with the bottom of an inner cavity of the transition groove, and the second-stage filtering device is communicated with the inner cavity of the transition groove through a water pump. According to the utility model, most of large-mass particulate matters are precipitated and filtered through the primary filtering device, tail water precipitated and filtered by the primary filtering device flows to the transition tank, the tail water in the transition tank is pumped to the secondary filtering device through the water pump for further fine filtering, and small-mass suspended particulate matters are filtered; therefore, the tail water is filtered.