5 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.

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 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.