9 results about "Sediment remediation" patented technology

The application discloses a kind of based on multimodal machine learning's bottom mud repair method and system, it is related to environmental remediation technical field, wherein method includes: obtaining satellite remote sensing data of target area, in-situ sensor data and laboratory data are composed of multimodal data;Based on multimodal data, pre-processing and feature selection are sequentially carried out, to obtain key feature set;Based on key feature set, historical pollution data and ecological sensitive area location information are combined to generate risk-cost trade-off suggestion;Based on risk-cost trade-off suggestion and multi-objective optimization algorithm, to generate optimized repair scheme;Based on optimized repair scheme, repair task is executed in target area, and the state data of target area in execution process is obtained;Based on state data, to adjust optimized repair scheme.Pollution dynamic diagnosis, real-time optimization and automated accurate execution of repair scheme are realized, and then the efficiency of complex water bottom mud treatment is improved.

The application belongs to the field of environmental governance, and provides a water sodium manganese ore-oxygen releasing agent composite type sediment repair material and a preparation and application method thereof, which comprises modified oxygen releasing agent, water sodium manganese ore, microbial flora and embedding matrix, the embedding matrix comprises calcium alginate, polyvinyl alcohol and water cross-linked formed hydrogel, wherein the microbial flora comprises domesticated aerobic denitrification and phosphorus removal mixed flora.The water sodium manganese ore-oxygen releasing agent composite type sediment repair material utilizes the photoelectric catalytic activity of water sodium manganese ore and the oxygen releasing ability of oxygen releasing compound, improves the oxidation-reduction potential of sediment, enhances the sustained degradation ability of organic pollutants, cooperatively removes nitrogen pollutants in water environment, enhances the in-situ repair effect of sediment, is applied to sediment repair, and is more efficient, environment-friendly and has long-term effect.

This invention discloses a method for algae-bacteria coupled denitrification and phosphorus removal in water bodies and sediment remediation, belonging to the field of aquatic ecological restoration technology. The invention employs a method of immobilizing degummed silk fiber-pure cotton canvas-sodium alginate, forming a dual-algae system with *Chlorella vulgaris* in its logarithmic growth phase and suspended *Chlorella sorokinica* in its logarithmic growth phase. This system is combined with suspended denitrification and phosphorus removal bacteria to achieve a three-phase synergistic purification system under natural light and without aeration. A 60-day pilot-scale operation of this method showed a TN removal rate of 87.0%, a TP removal rate of 80.7%, and a sediment organic matter degradation rate of 55.2%. This invention is energy-free, low-carbon, ecologically safe, and has low operation and maintenance costs, making it suitable for in-situ remediation of eutrophic rivers, lakes, landscape water bodies, and aquaculture wastewater in still or slow-flowing water bodies.

The present teachings describe photocatalytic composite materials that are useful for remediation of bodies of water such as lakes, ponds, wetlands and rice fields, as well as remediation of sediment under the water.

This invention relates to the field of sediment remediation, and more particularly to a device for treating river and lake sediment. Existing devices are inconvenient for judging the thickness of river and lake sediment during use, making it difficult to inject liquid bacteria into sediment of varying thicknesses, resulting in uneven distribution of the liquid bacteria. This invention includes a hull, with a mounting base fixedly connected to the bottom of the hull. A feed hopper is fixedly connected to the mounting base, and a hollow tube is rotatably connected to the lower part of the feed hopper. This invention uses a disc positioned on top of the river and lake sediment, allowing a guide pipe, threaded rod, and agitator to enter the sediment. An appropriate amount of liquid bacteria is then added to the feed hopper. This allows for the injection of liquid bacteria into sediment of varying thicknesses while minimizing dilution by the water, thus improving the treatment effect of river and lake sediment.

The utility model belongs to the technical field of river and lake bottom mud repair, and discloses a river and lake bottom mud in-situ repair device which comprises an insulation protection cover, a bottom plate, a bottom plate and a bottom plate, an overflow pipe; the insulating protective cover penetrates through the top of the insulating protective cover and comprises an inner pipe and an outer pipe which are detachably connected, and the inner pipe is filled with a material capable of adsorbing or degrading pollutants; the repairing material box is fixed on the inner side surface of the insulating protective cover and is used for containing a repairing material for adsorbing or degrading pollutants; the two electrode protection sleeves are fixed in the insulating protection cover and are respectively connected with an electrolyte supply device; the anode electrode stem is arranged in one electrode protection sleeve; the cathode electrode stem is arranged in the other electrode protection sleeve; and the anode electrode stem and the cathode electrode stem are respectively connected with a power supply through wires. The river and lake bottom mud in-situ remediation device can efficiently complete river and lake bottom mud remediation treatment, and is simple in structure and convenient to operate.

This invention discloses a method for treating blackened and odorous water bodies using a combination of sulfur autotrophic denitrification and anaerobic ammonium oxidation. The method includes: collecting overlying water and sediment samples from the blackened and odorous water body; sealing and allowing the overlying water and sediment samples to stand to obtain a treatment sample; determining the content of volatile organic sulfur compounds in the sediment sample and calculating the theoretical dosage of calcium nitrate; adding 1.0 times the theoretical dosage of calcium nitrate to the sediment of the treatment sample, and adding SAD sludge and Anammox sludge to the surface layer of the sediment; continuously operating until any day between days 20 and 30, then adding 0.3 to 0.8 times the theoretical dosage of calcium nitrate; continuing operation until days 45 to 55 to complete the water body treatment. This invention not only effectively solves the problem of water quality deterioration caused by seasonal changes but also synergistically removes NH4 from the sediment. + It contains AVS and organic matter, thereby reducing the emission of greenhouse gases such as N2O during sediment remediation.

This invention belongs to the field of river and lake sediment remediation technology, and discloses an in-situ electric remediation system for river and lake sediments. The system includes an insulated remediation support frame with multiple openings on the walls of its upper and lower horizontal pipe groups; a pair of anode electrode rods inserted into a pair of opposite pipes in the lower horizontal pipe group; a pair of cathode electrode rods inserted into a pair of opposite pipes in the upper horizontal pipe group; the anode and cathode electrode rods are respectively connected to the positive and negative terminals of a power supply via wires; a remediation material package fixed to the upper horizontal pipe group of the insulated remediation support frame; an insulated positioning rod inserted into a vertical pipe for insertion into the remediated sediment; a rigid force transmission sleeve fitted onto the upper section of the insulated positioning rod; and a traction rope assembly, with one end of each traction rope fixed to the upper horizontal pipe group and the other end wound around a pulley and fixed to a rope shaft. The above system has a simple structure and can effectively remediate river and lake sediments contaminated with heavy metals.

The application provides a hood type bottom sediment in-situ repair robot based on digital twinning and a working method, and relates to the technical field of environmental repair.The robot comprises a walking repair main bin, which internally comprises a main control module, a power module, a medicament storage module and a pumping system, the bottom of the main bin is provided with a spiral roller walking mechanism driven by the power module, and the front end of the main bin is provided with an environment sensing module;the main control module is in bidirectional communication with the environment sensing module and the power module; a flexible ecological hood is connected to the tail of the main bin, used for dragging and moving with the main bin and covering the surface of the bottom sediment; a digital twinning control unit is electrically connected with the main control unit, used for receiving main control module data, constructing an underwater environment model, planning a path and monitoring a repair state.The application realizes precise obstacle avoidance, efficient pesticide application and real-time monitoring of bottom sediment in-situ repair, and greatly improves the intelligentization, efficiency and ecological safety of repair work.