20 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.

Disclosed in the present invention are a microbiome with a highly-efficient tetrabromobisphenol A degradation function on the basis of cell-surface hydrophobicity, a construction method therefor and the use thereof. According to the present invention, microorganisms with a high cell-surface hydrophobicity are introduced into a tetrabromobisphenol A-degrading microbial community to construct a microbiome, which can effectively improve the degradation and removal efficiency of tetrabromobisphenol A by the microbiome, can provide an engineered microbial preparation for wastewater treatment and contaminated water body remediation or sediment remediation, and can also provide theoretical guidance for the application thereof in wastewater treatment and contaminated water body remediation or sediment remediation.

This application relates to the field of water pollution control technology, specifically to remediation materials that simultaneously treat sediment and water, their preparation methods, and applications. The method for preparing the remediation material includes: adding Al-MOFs and mixed activated carbon powder to an organic solvent, shaking, cooling, filtering, washing, and drying to obtain porous activated carbon material; adding the porous activated carbon material to a calcium lactate solution and stirring, then adding sodium alginate solution for forward spheroidization, followed by filtering, washing, and drying to obtain porous activated carbon material gel spheres; adding the porous activated carbon material gel spheres and a composite bacterial agent to water, shaking and culturing in a shaker, then filtering, washing, and drying to obtain bacteria-containing porous material; adding the bacteria-containing porous material to a sodium alginate solution, stirring, and adding calcium lactate solution dropwise for reverse spheroidization, followed by filtering, washing, and drying to obtain the remediation material. This remediation material possesses excellent water and sediment remediation effects without burdening the aquatic ecosystem.

The utility model discloses an aquatic plant-microorganism combined bottom mud remediation reactor, which belongs to the technical field of sludge treatment and comprises an ecological cylinder, bottom mud is laid at the bottom of the ecological cylinder and used for planting aquatic plants, overlying water is added into the ecological cylinder, and an adding fixing device is inserted into the top of the bottom mud. The bottom of the adding fixing device is communicated with the interior of the bottom mud through an opening, the top of the adding fixing device penetrates through overlying water to be communicated with the outside, and the adding fixing device is used for adding microbial agents; the ecological cylinder is further provided with a water flow simulation device used for simulating water flow. According to the aquatic plant-microorganism combined in-situ remediation system, an aquatic plant-microorganism combined in-situ remediation scheme with the highest cost performance can be obtained through low economic investment, and a better effect is achieved with low operation cost and maintenance cost.

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 application discloses a modified zeolite powder-based sediment repairing agent, which comprises 25-35 parts of zeolite powder, 15-25 parts of yellow sand, 15-20 parts of calcium peroxide powder and 15-25 parts of a microbial agent carrier complex in terms of mass fraction; the zeolite powder contains neodymium elements; and the microbial agent carrier complex contains carbon powder, attapulgite, bacillus spores, EM bacteria, nitrifying bacteria and denitrifying bacteria. The application further discloses a method for preparing the above sediment repairing agent.

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.

The invention belongs to the technical field of river basin bottom mud sediment remediation, and particularly relates to an in-situ remediation material for river basin bottom mud sediment as well as a preparation method and application thereof, the in-situ remediation material comprises a framework material as well as an exogenous functional microbial flora and a local microbial complex flora which are loaded on the framework material; the framework material is prepared from coal gangue waste; the exogenous functional microbial flora is an anaerobic microbial flora; wherein the anaerobic microbial flora has the function of degrading aromatic compounds, and the aromatic compounds comprise polycyclic aromatic hydrocarbon, benzene series or phenolic substances; the native microorganism composite flora is obtained by screening sediment of river basin bottom mud; according to the method, the degradation capacity of the functional microbial flora is remarkably improved, meanwhile, harmonious symbiosis of the introduced exogenous functional microorganisms and the local microbial complex flora is effectively promoted, the continuous stability and high efficiency of the river basin bottom mud sediment remediation process are ensured, and the overall remediation effect of the river basin bottom mud sediment is remarkably improved.

The invention discloses a preparation method and application of a KGA adsorbent, and the preparation method of the KGA adsorbent comprises the following steps: carrying out primary ultrasonic uniform stirring on kaolinite and water, standing, and carrying out secondary ultrasonic uniform stirring to obtain a suspension; adding a FeCl3 solution into the suspension, and stirring to obtain a goethite mixed solution; adding a regulator into the goethite mixed solution to regulate the pH to weak acidity, adding a reducing agent to regulate the pH to weak acidity, aging at constant temperature, centrifuging, washing with water, drying and grinding to obtain the KGA adsorbent. The method is low in material cost, environmentally friendly, free of secondary pollution and easy and convenient to operate, and an efficient new way is provided for in-situ remediation of organic pollutants such as glyphosate in soil and sediments. The adsorbent KGA is prepared from goethite and kaolinite, so that efficient, low-consumption and environment-friendly adsorption and degradation of glyphosate are realized. KGA is used as a glyphosate adsorbent. The adsorption capacity is improved to 2.67 times through the synergistic effect of KGA, and the KGA has catalytic activity and provides a better solution for sediment repair.

The present application relates to the technical field of water area sediment remediation, and particularly relates to an in-situ sediment remediation device, which comprises: a carrier for floating on a water area; a feeding mechanism installed on the carrier and used for supplying remediation materials; a feeding mechanism connected with the output of the feeding mechanism and used for delivering the remediation materials into the sediment, wherein the feeding mechanism comprises a feeding rod and a feeding sleeve, and the feeding rod extends into the feeding sleeve to form a delivery channel for the remediation materials; and a driving mechanism installed on the carrier, wherein the output end of the driving mechanism is connected with the feeding mechanism and used for driving the feeding mechanism to extend into the sediment to deliver the remediation materials. In the present application, the carrier is arranged so that the in-situ sediment remediation device can float on the water area. The feeding mechanism is arranged to store the remediation materials and supply the remediation materials to the feeding mechanism. After the remediation materials are supplied to the feeding mechanism, the driving mechanism drives the feeding mechanism to act so as to deliver the remediation materials into the sediment to remediate the sediment.

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 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 present teachings describe photocatalytic composites useful in the remediation of bodies of water, such as lakes, ponds, wetlands and paddy fields, as well as in the remediation of underwater deposits.

The utility model relates to a floating device for treating underwater bottom mud, and belongs to the technical field of water treatment equipment. The solar power generation panel is installed on the surface of an annular cylinder of the floating body, an aeration fan of the aeration system is fixedly connected into a cavity of the floating body, the upper end of an air pipe of the aeration system is connected with an air pipe outlet in the bottom of the floating body, the lower end of the air pipe of the aeration system is connected with the micropore aeration pipe, and the micropore aeration pipe is wound on the surface of an outer cylinder of the microbial agent sowing system. The upper end of the fixing rope device is connected with the floating body, the lower end is connected with the microbial agent sowing system, and the bottom of the microbial agent sowing system is connected with the supporting base. The device has the advantages that the structure is novel, a microbial agent is spread downwards through the shaking effect generated by inflow water dissolution, dilution and water flow impact of the microbial agent spreading system, centralized treatment of bottom mud is facilitated, economical use and long-acting large-area spreading are facilitated, it can be ensured that the microbial agent is spread at the bottom under water in a centralized mode, and the construction efficiency is improved. Wide spreading range and wide space of the microbial agent are ensured.

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.

The application discloses an aluminum-based composite material for bottom sediment repair, which is used for covering bottom sediment, fixing phosphorus and organic matters released in the bottom sediment, and is prepared by mixing and ball-milling Al powder and acid-treated activated carbon under inert gas conditions, and the weight percentage of the acid-treated activated carbon and the Al powder is 4-6:1; the aluminum-based composite material put into the bottom sediment forms a local alkaline environment, continuously fixes the released phosphorus in the bottom sediment through active zero-valent aluminum which is continuously dissolved and does not passivate, and adsorbs and decomposes organic matters in the bottom sediment through activated carbon with a large specific surface area. + The dense oxide film formed after the aluminum powder meets water is dissolved to expose the zero-valent aluminum inside the oxide film, then a local alkaline environment formed around the aluminum-based composite material through the galvanic cathode effect continuously promotes the activation of the zero-valent aluminum in the inner layer of the aluminum powder, and the activated zero-valent aluminum forms flocculation and precipitation with the endogenous phosphorus released in the bottom sediment.