9 results about "Waste site" patented technology

A process for removing oil and other organics especially lipids from process steams comprising lipids, brown grease, and water is disclosed and a process to remove metals and organics from leachate from landfills and other waste sites that generate contaminated water streams. The process involves adjusting pH and using electrical fields generated by a device comprising electrodes to induce gas bubbles. The gas bubbles facilitate the movement of lipids toward the surface of the solution where they may be skimmed off and recovered.

This invention relates to the field of soil pollution control technology, specifically to a microbial-phytoremediation method for heavy metal contaminated soil in mining waste sites. It includes a supporting base layer, on which a leachate collection layer, a heavy metal passivation and isolation layer, a microbial reinforcement layer, and a plant growth layer are sequentially arranged. This invention organically integrates multi-layered structural units to form a spatially ordered structure of leachate drainage—heavy metal passivation—microbial loading—plant growth. It employs immobilized functional microbial agents and embeds multi-parameter sensing devices to establish a monitoring-feedback-control closed-loop system. Simultaneously, hyperaccumulating plants are planted and inoculated with arbuscular mycorrhizal fungi, achieving a shift from an open-loop passive mode to a closed-loop active collaborative mode, avoiding problems such as delayed remediation response, poor synergy, and insufficient long-term stability.

Processes for removing oil and other organics especially lipids from process steams comprising lipids, brown grease, and water is disclosed and a process to remove metals and organics from leachate from landfills and other waste sites that generate contaminated water streams. The processes may involve adjusting pH and using electrical fields generated by a device comprising electrodes to induce gas bubbles. The gas bubbles facilitate movement toward the surface of the solution where they may be skimmed off and recovered. Processes are also described that upgrade brown grease to usable precursors for make beneficial products such as jet fuel. Other processes described herein include removal of carbon char from pyrolysis products like tires, plastics, rubbers, municipal solid waste, and oil or sewage sludge.

The invention provides a remote sensing image solid waste site extraction method and device, equipment and a storage medium, and relates to the technical field of remote sensing image processing. The method comprises the steps of obtaining a solid waste site extraction network based on remote sensing image pre-training, wherein the solid waste site extraction network comprises an initial feature extraction network, a dynamic adaptive receptive field hybrid expert module, a nested hybrid expert module and a task network; inputting a to-be-detected remote sensing image into the initial feature extraction network, and outputting initial features; inputting the initial feature into a dynamic adaptive receptive field hybrid expert module, and outputting a first expert feature; inputting the first expert feature into a nested hybrid expert module, and outputting a second expert feature; and inputting the second expert feature into the task network, and outputting an extraction result. By adopting the technical scheme provided by the invention, progressive fine modeling can be carried out on the solid waste site, and efficient identification of the remote sensing image solid waste site is realized while relatively low calculation complexity is kept.

This invention discloses a method for selecting Rhododendron and a soil remediation method for remediating low-concentration cadmium-contaminated soil in phosphate mine waste sites, belonging to the field of contaminated soil remediation technology. It aims to solve the problems of low biomass and low cadmium accumulation rates of herbaceous plants in the high-phosphorus and alkaline environment of phosphate mining areas. This invention selects Rhododendron as the core remediation plant, and seedlings are planted after soil evaluation; soil moisture is maintained through quantitative irrigation, and nitrogen and potassium fertilizers are supplemented to optimize nutrients; the above-ground parts are mechanized and the underground roots are regularly cleaned 8-10 months after planting, followed by harmless disposal. By adopting the above technical solution, this invention utilizes the high biomass and strong stress resistance of Rhododendron to achieve efficient extraction and stripping of low-concentration cadmium, reducing cadmium pollution in the soil while increasing vegetation coverage in the mining area, demonstrating excellent ecological benefits.

Provided are a waste discrimination system and a waste discrimination method capable of improving a discrimination technique for waste. A waste discrimination system includes: a waste site extraction model (221) that extracts a waste site present in a central portion included in a camera image based on the camera image, with reference to a window portion (107) set in advance within the image; a waste discrimination model (222) that screens a grade of waste and a ratio of each grade from a waste image extracted by the waste site extraction model (221), and is generated by including teacher data of a learning image; and an output portion (24) that outputs information of the grade of waste and the ratio of each grade discriminated using the waste discrimination model (222) and based on the waste image.

The invention relates to the technical field of combined pollution regulation and control, in particular to a mining wasteland heavy metal stabilization and vegetation reconstruction synergistic method which comprises the steps that a composite passivator is evenly laid on the surface layer of a mining wasteland, the composite passivator comprises modified biochar and a mineral binder, and an initial passivation layer is formed; planting halophytic tolerance vegetation on the surface of the initial passivation layer, and enabling the root system of the vegetation to penetrate through the passivation layer and extend to the polluted substrate; inducing the pore structure of the passivator to recombine by using organic acid secreted by the root system of the halophytic vegetation, and synchronously complexing heavy metal ions and salt ions to form a stabilized rhizosphere microdomain; introducing salt-tolerant mycorrhizal fungi into the stabilized rhizosphere microdomain, wherein the salt-tolerant mycorrhizal fungi and halophytic vegetation are symbiotic to form a heavy metal barrier. According to the method, the space matching precision of the mycorrhiza inoculation area is improved, the cooperative symbiosis capability of the root system in the heterogeneous salt-hypochondrium environment is enhanced, the method has the advantages of being accurate in modeling, quick in response, high in operability and the like, and good engineering popularization potential and ecological reconstruction value are embodied.

This utility model discloses an adjustable grid positioning frame for a coal gangue wasteland revegetation experimental area, including a frame support and connecting crossbars. The frame support has a U-shaped structure, and the connecting crossbars are located at the opening of the frame support. Connecting plates are symmetrically located at the bottom of the connecting crossbars and the bottom of the frame support, and fixing teeth are installed at the bottom of the connecting plates. Symmetrically installed inclined plates are provided on the inner side of the frame support, with the joint between the two inclined plates located in the middle of the connecting crossbars. Planting grooves are provided on the surface of the inclined plates, and springs are installed between the two inclined plates. This utility model, through the specially structured inclined baffles and raised discs, can act as an interception structure for mist or soil particles on flat ground, achieving a soil covering effect in the planting area. In sloping areas, the installation method of the inclined baffles is changed, allowing the raised discs to act as a soil attachment structure, and the frame support to form a more horizontal structure.

This invention discloses a method for remediating acidic mines using humus extracted from municipal solid waste landfills, relating to the technical field of ecological restoration of acidic mine waste sites. The method includes the following steps: excavating municipal solid waste landfills to obtain aged waste, crushing and screening it to obtain screened humus; analyzing the composition of organic matter, nutrients, and heavy metals in the screened humus; harmless screening; nutrient adjustment; soil improvement; vegetation restoration; and monitoring and evaluation of the remediation effect. This method not only reduces the cost and improves the efficiency of acidic mine remediation but also promotes the restoration of the ecological function of the mine waste site through vegetation restoration, while effectively improving the resource reuse efficiency of the screened humus. This invention is applicable to the remediation of different types of acidic mine waste sites, such as pyrite, sulfur-containing metal ores, and ion-adsorption rare earth ores, contributing to the achievement of sustainable development goals.